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-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/SkypeExport/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/baresip/default.nix52
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-discord/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix30
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-mastodon/default.nix29
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-steam/default.nix30
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/default.nix69
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/plugins.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/blink/default.nix68
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/blink/pythonpath.patch49
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/default.nix135
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/localtime64_stub.c12
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/update.sh12
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/centerim/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/chatterino2/default.nix36
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/chatty/default.nix79
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/cordless/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/coyim/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-cursed/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/default.nix110
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/package.json58
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/update.sh42
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/dino/default.nix88
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/discord/base.nix93
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/discord/default.nix36
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-package.json134
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-yarndeps.nix5517
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop.nix113
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/element-web.nix41
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/default.nix46
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/update.sh19
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.lock2531
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.nix2869
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/default.nix46
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/update.sh16
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/yarn.nix4557
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/element/update-element-desktop.sh17
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ferdi/default.nix34
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/fractal/default.nix93
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/franz/default.nix19
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/franz/generic.nix94
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/freetalk/default.nix33
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/gajim/default.nix80
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/gitter/default.nix102
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/go-neb/default.nix29
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/default.nix62
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/hardcoded_path.patch13
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/gtmess/default.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/hipchat/default.nix88
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/jackline/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix58
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/default.nix72
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/jitsi.patch27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/kaidan/default.nix62
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/kdeltachat/default.nix54
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/linphone/default.nix186
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/linphone/do-not-build-linphone-sdk.patch118
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/linphone/remove-bc_compute_full_version-usage.patch74
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-commander/default.nix42
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-dl/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/composition.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-env.nix540
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-packages.nix1426
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/package.json27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/matrixcli/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mattermost-desktop/default.nix104
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mcabber/default.nix35
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/default.nix160
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile39
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile.lock101
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/gemset.nix410
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/gtk/Gemfile4
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/image_file_cache/Gemfile1
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/photo_support/Gemfile4
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/uitranslator/Gemfile5
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/test_plugin.rb10
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/mikutter/update.sh51
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mirage/default.nix58
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/mm/default.nix21
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/neochat/default.nix67
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/nheko/default.nix91
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/oysttyer/default.nix41
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix72
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/carbons/default.nix26
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/msn-pecan/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/otr/default.nix22
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-indicator/default.nix33
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/default.nix33
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-mra/default.nix35
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-opensteamworks/default.nix37
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-osd/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-skypeweb/default.nix31
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-xmpp-receipts/default.nix31
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-discord/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-facebook/default.nix66
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-hangouts/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-lurch/default.nix31
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix38
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-mm-sms/default.nix30
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-plugin-pack/default.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-slack/default.nix28
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-vk-plugin/default.nix31
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-xmpp-http-upload/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/sipe/default.nix38
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/telegram-purple/default.nix43
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/tox-prpl/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/window-merge/default.nix21
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/add-search-path.patch20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/default.nix107
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/pidgin-makefile.patch64
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/wrapper.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/poezio/default.nix59
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pond/default.nix36
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pond/deps.nix47
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/profanity/default.nix83
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/profanity/patches/packages-osx.patch13
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/psi-plus/default.nix104
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/psi/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/psi/fix-cmake-hunspell-1.7.patch12
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/pybitmessage/default.nix40
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/qtox/default.nix78
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/quaternion/default.nix46
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/rambox/default.nix28
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/rambox/pro.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/rambox/rambox.nix33
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ratox/default.nix37
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ricochet/default.nix59
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/default.nix150
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/notestsapps.patch106
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/restbed.nix38
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/ripcord/default.nix68
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/default.nix60
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/requirements.nix67
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/scudcloud/default.nix21
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/seren/default.nix37
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/signal-cli/default.nix54
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix155
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/signald/default.nix95
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/signald/git-describe-always.patch9
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/signald/gradle-plugin.patch26
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/silc-client/default.nix38
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix128
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/slack-term/default.nix23
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix196
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/slack/update.sh41
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ssh-chat/default.nix22
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/stride/default.nix68
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/default.nix44
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/qt-5.11.patch10
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/scons.patch53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/tangram/default.nix56
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/teams/default.nix122
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/client.nix148
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/server.nix100
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix74
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix36
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix177
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/tg_owt.nix46
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py73
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telegram/telegram-cli/default.nix49
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/gabble/default.nix29
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/haze/default.nix29
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/idle/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix36
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/salut/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/tensor/default.nix62
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/torchat/default.nix40
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/toxic/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/turses/default.nix54
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/twinkle/default.nix84
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/utox/default.nix43
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/vacuum/default.nix41
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/viber/default.nix109
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/vk-cli/default.nix54
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix73
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/wavebox/default.nix68
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/whatsapp-for-linux/default.nix47
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix175
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/default.nix25
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/deps.nix20
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/ytalk/default.nix21
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/default.nix130
-rwxr-xr-xnixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/update.sh10
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/pytest-executable-name.patch13
-rw-r--r--nixpkgs/pkgs/applications/networking/instant-messengers/zulip/default.nix40
188 files changed, 27438 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/SkypeExport/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/SkypeExport/default.nix
new file mode 100644
index 000000000000..bab9d12123df
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/SkypeExport/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, cmake, boost166 }:
+
+stdenv.mkDerivation rec {
+  pname = "SkypeExport";
+  version = "1.4.0";
+
+  src = fetchFromGitHub {
+    owner = "Temptin";
+    repo = "SkypeExport";
+    rev = "v${version}";
+    sha256 = "1ilkh0s3dz5cp83wwgmscnfmnyck5qcwqg1yxp9zv6s356dxnbak";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ boost166 ];
+
+  preConfigure = "cd src/SkypeExport/_gccbuild/linux";
+  installPhase = "install -Dt $out/bin SkypeExport";
+
+  meta = with lib; {
+    description = "Export Skype history to HTML";
+    homepage = "https://github.com/Temptin/SkypeExport";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ yegortimoshenko ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/baresip/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/baresip/default.nix
new file mode 100644
index 000000000000..122433d197aa
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/baresip/default.nix
@@ -0,0 +1,52 @@
+{ lib, stdenv, fetchurl, zlib, openssl, libre, librem, pkg-config, gst_all_1
+, cairo, mpg123, alsa-lib, SDL, libv4l, celt, libsndfile, srtp, ffmpeg
+, gsm, speex, portaudio, spandsp, libuuid, libvpx
+}:
+stdenv.mkDerivation rec {
+  version = "0.6.5";
+  pname = "baresip";
+  src=fetchurl {
+    url = "http://www.creytiv.com/pub/baresip-${version}.tar.gz";
+    sha256 = "13di0ycdcr2q2a20mjvyaqfmvk5xldwqaxklqsz7470jnbc5n0rb";
+  };
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [zlib openssl libre librem cairo mpg123
+    alsa-lib SDL libv4l celt libsndfile srtp ffmpeg gsm speex portaudio spandsp libuuid
+    libvpx
+  ] ++ (with gst_all_1; [ gstreamer gst-libav gst-plugins-base gst-plugins-bad gst-plugins-good ]);
+  makeFlags = [
+    "LIBRE_MK=${libre}/share/re/re.mk"
+    "LIBRE_INC=${libre}/include/re"
+    "LIBRE_SO=${libre}/lib"
+    "LIBREM_PATH=${librem}"
+    "PREFIX=$(out)"
+    "USE_VIDEO=1"
+    "CCACHE_DISABLE=1"
+
+    "USE_ALSA=1" "USE_AMR=1" "USE_CAIRO=1" "USE_CELT=1"
+    "USE_CONS=1" "USE_EVDEV=1" "USE_FFMPEG=1"  "USE_GSM=1" "USE_GST1=1"
+    "USE_L16=1" "USE_MPG123=1" "USE_OSS=1" "USE_PLC=1" "USE_VPX=1"
+    "USE_PORTAUDIO=1" "USE_SDL=1" "USE_SNDFILE=1" "USE_SPEEX=1"
+    "USE_SPEEX_AEC=1" "USE_SPEEX_PP=1" "USE_SPEEX_RESAMP=1" "USE_SRTP=1"
+    "USE_STDIO=1" "USE_SYSLOG=1" "USE_UUID=1" "USE_V4L2=1" "USE_X11=1"
+
+    "USE_BV32=" "USE_COREAUDIO=" "USE_G711=1" "USE_G722=1" "USE_G722_1="
+    "USE_ILBC=" "USE_OPUS=" "USE_SILK="
+  ]
+  ++ lib.optional (stdenv.cc.cc != null) "SYSROOT_ALT=${stdenv.cc.cc}"
+  ++ lib.optional (stdenv.cc.libc != null) "SYSROOT=${stdenv.cc.libc}"
+  ;
+
+  NIX_CFLAGS_COMPILE='' -I${librem}/include/rem -I${gsm}/include/gsm
+    -DHAVE_INTTYPES_H -D__GLIBC__
+    -D__need_timeval -D__need_timespec -D__need_time_t '';
+  meta = {
+    homepage = "http://www.creytiv.com/baresip.html";
+    platforms = with lib.platforms; linux;
+    maintainers = with lib.maintainers; [raskin];
+    license = lib.licenses.bsd3;
+    downloadPage = "http://www.creytiv.com/pub/";
+    updateWalker = true;
+    downloadURLRegexp = "/baresip-.*[.]tar[.].*";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-discord/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-discord/default.nix
new file mode 100644
index 000000000000..543a5f52c979
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-discord/default.nix
@@ -0,0 +1,32 @@
+{ lib, fetchFromGitHub, stdenv, bitlbee, autoreconfHook, pkg-config, glib }:
+
+with lib;
+stdenv.mkDerivation rec {
+  pname = "bitlbee-discord";
+  version = "0.4.3";
+
+  src = fetchFromGitHub {
+    rev = version;
+    owner = "sm00th";
+    repo = "bitlbee-discord";
+    sha256 = "00qgdvrp7hv02n0ns685igp810zxmv3adsama8601122al6x041n";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ bitlbee ];
+
+  preConfigure = ''
+    export BITLBEE_PLUGINDIR=$out/lib/bitlbee
+    export BITLBEE_DATADIR=$out/share/bitlbee
+    ./autogen.sh
+  '';
+
+  meta = {
+    description = "Bitlbee plugin for Discord";
+
+    homepage = "https://github.com/sm00th/bitlbee-discord";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ lassulus jb55 ];
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix
new file mode 100644
index 000000000000..e5a45a1e9f52
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix
@@ -0,0 +1,30 @@
+{ lib, fetchFromGitHub, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, json-glib }:
+
+stdenv.mkDerivation rec {
+  pname = "bitlbee-facebook";
+  version = "1.2.2";
+
+  src = fetchFromGitHub {
+    rev = "v${version}";
+    owner = "bitlbee";
+    repo = "bitlbee-facebook";
+    sha256 = "1qiiiq17ybylbhwgbwsvmshb517589r8yy5rsh1rfaylmlcxyy7z";
+  };
+
+  nativeBuildInputs = [ autoconf automake libtool pkg-config ];
+
+  buildInputs = [ bitlbee json-glib ];
+
+  preConfigure = ''
+    export BITLBEE_PLUGINDIR=$out/lib/bitlbee
+    ./autogen.sh
+  '';
+
+  meta = with lib; {
+    description = "The Facebook protocol plugin for bitlbee";
+    homepage = "https://github.com/bitlbee/bitlbee-facebook";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ toonn ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-mastodon/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-mastodon/default.nix
new file mode 100644
index 000000000000..f1b2df658a6b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-mastodon/default.nix
@@ -0,0 +1,29 @@
+{ lib, fetchgit, stdenv, bitlbee, autoreconfHook, pkg-config, glib }:
+
+with lib;
+stdenv.mkDerivation rec {
+  pname = "bitlbee-mastodon";
+  version = "1.4.4";
+
+  src = fetchgit {
+    url = "https://alexschroeder.ch/cgit/bitlbee-mastodon";
+    rev = "v${version}";
+    sha256 = "0a8196pyr6bjnqg82zn7jdhiv7xsg4npbpzalla1i2h99j30q8pk";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ bitlbee ];
+
+  preConfigure = ''
+    export BITLBEE_PLUGINDIR=$out/lib/bitlbee
+    export BITLBEE_DATADIR=$out/share/bitlbee
+  '';
+
+  meta = {
+    description = "Bitlbee plugin for Mastodon";
+    homepage = "https://alexschroeder.ch/cgit/bitlbee-mastodon/about";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ jpotier ];
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-steam/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-steam/default.nix
new file mode 100644
index 000000000000..14464247659c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee-steam/default.nix
@@ -0,0 +1,30 @@
+{ lib, fetchFromGitHub, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, glib, libgcrypt }:
+
+with lib;
+stdenv.mkDerivation rec {
+  version = "1.4.2";
+  pname = "bitlbee-steam";
+
+  src = fetchFromGitHub {
+    rev = "v${version}";
+    owner = "bitlbee";
+    repo = "bitlbee-steam";
+    sha256 = "121r92mgwv445wwxzh35n19fs5k81ihr0j19k256ia5502b1xxaq";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ bitlbee autoconf automake libtool libgcrypt ];
+
+  preConfigure = ''
+    export BITLBEE_PLUGINDIR=$out/lib/bitlbee
+    ./autogen.sh
+  '';
+
+  meta = {
+    description = "Steam protocol plugin for BitlBee";
+
+    homepage = "https://github.com/jgeboski/bitlbee-steam";
+    license = licenses.gpl2Plus;
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/default.nix
new file mode 100644
index 000000000000..4ecc449fe85a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/default.nix
@@ -0,0 +1,69 @@
+{ lib, fetchurl, fetchpatch, stdenv, gnutls, glib, pkg-config, check, libotr, python2
+, enableLibPurple ? false, pidgin ? null
+, enablePam ? false, pam ? null
+}:
+
+with lib;
+stdenv.mkDerivation rec {
+  pname = "bitlbee";
+  version = "3.6";
+
+  src = fetchurl {
+    url = "mirror://bitlbee/src/bitlbee-${version}.tar.gz";
+    sha256 = "0zhhcbcr59sx9h4maf8zamzv2waya7sbsl7w74gbyilvy93dw5cz";
+  };
+
+  nativeBuildInputs = [ pkg-config ] ++ optional doCheck check;
+
+  buildInputs = [ gnutls libotr python2 ]
+    ++ optional enableLibPurple pidgin
+    ++ optional enablePam pam;
+
+  propagatedBuildInputs = [ glib ];
+
+  configureFlags = [
+    "--otr=1"
+    "--ssl=gnutls"
+    "--pidfile=/var/lib/bitlbee/bitlbee.pid"
+  ] ++ optional enableLibPurple "--purple=1"
+    ++ optional enablePam "--pam=1";
+
+  patches = [
+    # This should be dropped once the issue is fixed upstream.
+    (fetchpatch {
+      url = "https://github.com/bitlbee/bitlbee/commit/6ff651b3ec93e5fd74f80766d5e9714d963137bc.diff";
+      sha256 = "144dpm4kq7c268fpww1q3n88ayg068n73fbabr5arh1zryw48qfv";
+    })
+  ];
+
+  installTargets = [ "install" "install-dev" ];
+
+  doCheck = !enableLibPurple; # Checks fail with libpurple for some reason
+  checkPhase = ''
+    # check flags set VERBOSE=y which breaks the build due overriding a command
+    make check
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = {
+    description = "IRC instant messaging gateway";
+
+    longDescription = ''
+      BitlBee brings IM (instant messaging) to IRC clients.  It's a
+      great solution for people who have an IRC client running all the
+      time and don't want to run an additional MSN/AIM/whatever
+      client.
+
+      BitlBee currently supports the following IM networks/protocols:
+      XMPP/Jabber (including Google Talk), MSN Messenger, Yahoo!
+      Messenger, AIM and ICQ.
+    '';
+
+    homepage = "https://www.bitlbee.org/";
+    license = licenses.gpl2Plus;
+
+    maintainers = with maintainers; [ pSub ];
+    platforms = platforms.gnu ++ platforms.linux;  # arbitrary choice
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/plugins.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/plugins.nix
new file mode 100644
index 000000000000..ad68fcb4b79d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bitlbee/plugins.nix
@@ -0,0 +1,20 @@
+{ lib, stdenv, bitlbee }:
+
+with lib;
+
+plugins:
+
+stdenv.mkDerivation {
+  inherit bitlbee plugins;
+  name = "bitlbee-plugins";
+  buildInputs = [ bitlbee plugins ];
+  phases = [ "installPhase" ];
+  installPhase = ''
+    mkdir -p $out/lib/bitlbee
+    for plugin in $plugins; do
+      for thing in $(ls $plugin/lib/bitlbee); do
+        ln -s $plugin/lib/bitlbee/$thing $out/lib/bitlbee/
+      done
+    done
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/blink/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/blink/default.nix
new file mode 100644
index 000000000000..805278b4e456
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/blink/default.nix
@@ -0,0 +1,68 @@
+{ lib, fetchdarcs, python2Packages, libvncserver, zlib
+, gnutls, libvpx, makeDesktopItem, mkDerivationWith }:
+
+mkDerivationWith python2Packages.buildPythonApplication rec {
+
+  pname = "blink";
+  version = "3.2.0";
+
+  src = fetchdarcs {
+    url = "http://devel.ag-projects.com/repositories/blink-qt";
+    rev = "release-${version}";
+    sha256 = "19rcwr5scw48qnj79q1pysw95fz9h98nyc3161qy2kph5g7dwkc3";
+  };
+
+  patches = [ ./pythonpath.patch ];
+  postPatch = ''
+    sed -i 's|@out@|'"''${out}"'|g' blink/resources.py
+  '';
+
+  propagatedBuildInputs = with python2Packages; [
+    pyqt5_with_qtwebkit
+    cjson
+    sipsimple
+    twisted
+    google-api-python-client
+  ];
+
+  buildInputs = [
+    python2Packages.cython
+    zlib
+    libvncserver
+    libvpx
+  ];
+
+  desktopItem = makeDesktopItem {
+    name = "Blink";
+    exec = "blink";
+    comment = meta.description;
+    desktopName = "Blink";
+    icon = "blink";
+    genericName = "Instant Messaging";
+    categories = "Internet;";
+  };
+
+  dontWrapQtApps = true;
+
+  postInstall = ''
+    mkdir -p "$out/share/applications"
+    mkdir -p "$out/share/pixmaps"
+    cp "$desktopItem"/share/applications/* "$out/share/applications"
+    cp "$out"/share/blink/icons/blink.* "$out/share/pixmaps"
+  '';
+
+  preFixup = ''
+    makeWrapperArgs+=(
+      --prefix "LD_LIBRARY_PATH" ":" "${gnutls.out}/lib"
+      "''${qtWrapperArgs[@]}"
+    )
+  '';
+
+  meta = with lib; {
+    homepage = "http://icanblink.com/";
+    description = "A state of the art, easy to use SIP client for Voice, Video and IM";
+    platforms = platforms.linux;
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ pSub ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/blink/pythonpath.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/blink/pythonpath.patch
new file mode 100644
index 000000000000..0df8bc84ff30
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/blink/pythonpath.patch
@@ -0,0 +1,49 @@
+--- blink-2.0.0/blink/resources.py	2016-03-09 14:39:07.000000000 +0100
++++ blink-2.0.0/blink/resources-patched.py	2016-03-12 21:34:14.965476623 +0100
+@@ -1,7 +1,10 @@
++# Copyright (C) 2010-2013 AG Projects. See LICENSE for details.
++#
+ 
+ """Provide access to Blink's resources"""
+ 
+-import __main__
++__all__ = ['ApplicationData', 'Resources', 'IconManager']
++
+ import imghdr
+ import os
+ import platform
+@@ -19,14 +22,10 @@
+ from blink.util import run_in_gui_thread
+ 
+ 
+-__all__ = ['ApplicationData', 'Resources', 'IconManager']
+-
+-
+ class DirectoryContextManager(unicode):
+     def __enter__(self):
+         self.directory = os.getcwdu()
+         os.chdir(self)
+-
+     def __exit__(self, type, value, traceback):
+         os.chdir(self.directory)
+ 
+@@ -61,18 +60,7 @@
+     @classproperty
+     def directory(cls):
+         if cls._cached_directory is None:
+-            try:
+-                binary_directory = os.path.dirname(os.path.realpath(__main__.__file__))
+-            except AttributeError:
+-                if hasattr(sys, 'frozen'):
+-                    application_directory = os.path.dirname(os.path.realpath(sys.executable))
+-                else:
+-                    application_directory = os.path.realpath('')  # executed in interactive interpreter
+-            else:
+-                if os.path.basename(binary_directory) == 'bin':
+-                    application_directory = os.path.dirname(binary_directory)
+-                else:
+-                    application_directory = binary_directory
++            application_directory = '@out@'
+             if os.path.exists(os.path.join(application_directory, 'resources', 'blink.ui')):
+                 cls._cached_directory = os.path.join(application_directory, 'resources').decode(sys.getfilesystemencoding())
+             else:
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/default.nix
new file mode 100644
index 000000000000..bca1a1affc0d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/default.nix
@@ -0,0 +1,135 @@
+{ stdenv
+, lib
+, fetchurl
+, rpmextract
+, libnotify
+, libuuid
+, cairo
+, cups
+, pango
+, fontconfig
+, udev
+, dbus
+, gtk3
+, atk
+, at-spi2-atk
+, expat
+, gdk-pixbuf
+, freetype
+, nspr
+, glib
+, nss
+, libX11
+, libXrandr
+, libXrender
+, libXtst
+, libXdamage
+, libxcb
+, libXcursor
+, libXi
+, libXext
+, libXfixes
+, libXft
+, libXcomposite
+, libXScrnSaver
+, alsa-lib
+, pulseaudio
+, makeWrapper
+, xdg-utils
+}:
+
+let
+  getFirst = n: v: builtins.concatStringsSep "." (lib.take n (lib.splitString "." v));
+in
+
+stdenv.mkDerivation rec {
+  pname = "bluejeans";
+  version = "2.23.0.39";
+
+  src = fetchurl {
+    url = "https://swdl.bluejeans.com/desktop-app/linux/${getFirst 3 version}/BlueJeans_${version}.rpm";
+    sha256 = "sha256-LGg14KJ/hEnSaSrdTltY9YXv7Nekkfo66uLkxjMx8AI=";
+  };
+
+  nativeBuildInputs = [ rpmextract makeWrapper ];
+
+  libPath =
+    lib.makeLibraryPath
+      [
+        libnotify
+        libuuid
+        cairo
+        cups
+        pango
+        fontconfig
+        gtk3
+        atk
+        at-spi2-atk
+        expat
+        gdk-pixbuf
+        dbus
+        (lib.getLib udev)
+        freetype
+        nspr
+        glib
+        stdenv.cc.cc.lib
+        nss
+        libX11
+        libXrandr
+        libXrender
+        libXtst
+        libXdamage
+        libxcb
+        libXcursor
+        libXi
+        libXext
+        libXfixes
+        libXft
+        libXcomposite
+        libXScrnSaver
+        alsa-lib
+        pulseaudio
+      ];
+
+  localtime64_stub = ./localtime64_stub.c;
+
+  buildCommand = ''
+    mkdir -p $out/bin/
+    cd $out
+    rpmextract $src
+    mv usr/share share
+    rmdir usr
+
+    patchelf \
+      --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
+      --replace-needed libudev.so.0 libudev.so.1 \
+      opt/BlueJeans/bluejeans-v2
+
+    patchelf \
+      --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
+      opt/BlueJeans/resources/BluejeansHelper
+
+    cc $localtime64_stub -shared -o "${placeholder "out"}"/opt/BlueJeans/liblocaltime64_stub.so
+
+    makeWrapper $out/opt/BlueJeans/bluejeans-v2 $out/bin/bluejeans \
+      --set LD_LIBRARY_PATH "${libPath}":"${placeholder "out"}"/opt/BlueJeans \
+      --set LD_PRELOAD "$out"/opt/BlueJeans/liblocaltime64_stub.so \
+      --prefix PATH : ${lib.makeBinPath [ xdg-utils ]}
+
+    substituteInPlace "$out"/share/applications/bluejeans-v2.desktop \
+      --replace "/opt/BlueJeans/bluejeans-v2" "$out/bin/bluejeans"
+
+    patchShebangs "$out"
+  '';
+
+  passthru.updateScript = ./update.sh;
+
+  meta = with lib; {
+    description = "Video, audio, and web conferencing that works together with the collaboration tools you use every day";
+    homepage = "https://www.bluejeans.com";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/localtime64_stub.c b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/localtime64_stub.c
new file mode 100644
index 000000000000..87c2fa11714c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/localtime64_stub.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void *localtime64() {
+  fprintf(stderr, "nixpkgs: call into localtime64_r\n");
+  abort();
+}
+
+void *localtime64_r() {
+  fprintf(stderr, "nixpkgs: call into localtime64_r\n");
+  abort();
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/update.sh
new file mode 100755
index 000000000000..2c527462003e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/bluejeans/update.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl pup common-updater-scripts
+
+set -eu -o pipefail
+
+version="$(curl -Ls https://www.bluejeans.com/download | \
+    pup 'a[aria-label~="Linux"] attr{href}' | \
+    #output contains *.deb and *.rpm
+    grep "\.rpm" | \
+    awk -F'[ ._ ]' '{printf $6"."$7"."$8"."$9"\n"}')"
+
+update-source-version bluejeans-gui "$version"
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/centerim/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/centerim/default.nix
new file mode 100644
index 000000000000..78178f0021e2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/centerim/default.nix
@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchurl, gnused, openssl, curl, ncurses, libjpeg
+, withGpg ? true, gpgme ? null}:
+
+stdenv.mkDerivation rec {
+  version = "5.0.1";
+  pname = "centerim5";
+
+  src = fetchurl {
+    url = "http://centerim.org/download/cim5/${pname}-${version}.tar.gz";
+    sha256 = "0viz86jflp684vfginhl6aaw4gh2qvalc25anlwljjl3kkmibklk";
+  };
+
+  CXXFLAGS = "-std=gnu++98";
+
+  buildInputs = [ openssl curl ncurses libjpeg ]
+    ++ lib.optional withGpg gpgme;
+
+  preConfigure = ''
+    ${gnused}/bin/sed -i '1,1i#include <stdio.h>' libicq2000/libicq2000/sigslot.h
+  '';
+
+  configureFlags = [
+    "--with-openssl=${openssl.dev}"
+  ];
+
+  meta = {
+    homepage = "http://www.centerim.org/";
+    description = "Fork of CenterICQ, a curses instant messaging program";
+    license = lib.licenses.gpl2Plus;
+    platforms = with lib.platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/chatterino2/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
new file mode 100644
index 000000000000..075fd5b3a20a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
@@ -0,0 +1,36 @@
+{ mkDerivation, stdenv, lib, pkg-config, fetchFromGitHub, qtbase, qtsvg, qtmultimedia, qmake, boost, openssl, wrapQtAppsHook }:
+
+mkDerivation rec {
+  pname = "chatterino2";
+  version = "2.3.0";
+  src = fetchFromGitHub {
+    owner = "Chatterino";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0x12zcrbkxn2nn0hqkj1amrxv4q032id282cajzsx7by970r1shd";
+    fetchSubmodules = true;
+  };
+  nativeBuildInputs = [ qmake pkg-config wrapQtAppsHook ];
+  buildInputs = [ qtbase qtsvg qtmultimedia boost openssl ];
+  postInstall = lib.optionalString stdenv.isDarwin ''
+    mkdir -p "$out/Applications"
+    mv bin/chatterino.app "$out/Applications/"
+  '';
+  postFixup = lib.optionalString stdenv.isDarwin ''
+    wrapQtApp "$out/Applications/chatterino.app/Contents/MacOS/chatterino"
+  '';
+  meta = with lib; {
+    description = "A chat client for Twitch chat";
+    longDescription = ''
+      Chatterino is a chat client for Twitch chat. It aims to be an
+      improved/extended version of the Twitch web chat. Chatterino 2 is
+      the second installment of the Twitch chat client series
+      "Chatterino".
+    '';
+    homepage = "https://github.com/Chatterino/chatterino2";
+    changelog = "https://github.com/Chatterino/chatterino2/blob/master/CHANGELOG.md";
+    license = licenses.mit;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ rexim ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/chatty/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/chatty/default.nix
new file mode 100644
index 000000000000..8266434eb086
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/chatty/default.nix
@@ -0,0 +1,79 @@
+{ lib
+, stdenv
+, fetchFromGitLab
+, appstream-glib
+, desktop-file-utils
+, meson
+, ninja
+, pkg-config
+, python3
+, wrapGAppsHook
+, evolution-data-server
+, feedbackd
+, gtk3
+, json-glib
+, libgcrypt
+, libhandy
+, libphonenumber
+, olm
+, pidgin
+, protobuf
+, sqlite
+, plugins ? [ ]
+}:
+
+stdenv.mkDerivation rec {
+  pname = "chatty";
+  version = "0.3.4";
+
+  src = fetchFromGitLab {
+    domain = "source.puri.sm";
+    owner = "Librem5";
+    repo = "chatty";
+    rev = "v${version}";
+    sha256 = "0910f5bw75ph576gxbsd6ysdwnlk4ysdp0pml2i3mjqpcbkqfs3w";
+  };
+
+  postPatch = ''
+    patchShebangs build-aux/meson
+  '';
+
+  nativeBuildInputs = [
+    appstream-glib
+    desktop-file-utils
+    meson
+    ninja
+    pkg-config
+    python3
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    evolution-data-server
+    feedbackd
+    gtk3
+    json-glib
+    libgcrypt
+    libhandy
+    libphonenumber
+    olm
+    pidgin
+    protobuf
+    sqlite
+  ];
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --prefix PURPLE_PLUGIN_PATH : ${pidgin.makePluginPath plugins}
+      ${lib.concatMapStringsSep " " (p: p.wrapArgs or "") plugins}
+    )
+  '';
+
+  meta = with lib; {
+    description = "XMPP and SMS messaging via libpurple and ModemManager";
+    homepage = "https://source.puri.sm/Librem5/chatty";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ dotlambda tomfitzhenry ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/cordless/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/cordless/default.nix
new file mode 100644
index 000000000000..a906c46c4aef
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/cordless/default.nix
@@ -0,0 +1,25 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "cordless";
+  version = "2020-11-22";
+
+  src = fetchFromGitHub {
+    owner = "Bios-Marcel";
+    repo = pname;
+    rev = version;
+    sha256 = "0avf09b73fs3wpb4fzmm6ka595aanfvp95m6xj1ccxvq8ciwpqcw";
+  };
+
+  subPackages = [ "." ];
+
+  vendorSha256 = "01anbhwgwam70dymcmvkia1xpw48658rq7wv4m7fiavxvnli6z2y";
+
+  meta = with lib; {
+    homepage = "https://github.com/Bios-Marcel/cordless";
+    description = "Discord terminal client";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ colemickens ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/coyim/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/coyim/default.nix
new file mode 100644
index 000000000000..abcdf617352b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/coyim/default.nix
@@ -0,0 +1,27 @@
+{ lib, buildGoPackage, fetchFromGitHub, pkg-config,
+  cairo, gdk-pixbuf, glib, gnome, wrapGAppsHook, gtk3 }:
+
+buildGoPackage rec {
+  pname = "coyim";
+  version = "0.3.11";
+
+  goPackagePath = "github.com/coyim/coyim";
+
+  src = fetchFromGitHub {
+    owner = "coyim";
+    repo = "coyim";
+    rev = "v${version}";
+    sha256 = "1g8nf56j17rdhhj7pv3ha1rb2mfc0mdvyzl35pgcki08w7iw08j3";
+  };
+
+  nativeBuildInputs = [ pkg-config wrapGAppsHook ];
+
+  buildInputs = [ glib cairo gdk-pixbuf gtk3 gnome.adwaita-icon-theme ];
+
+  meta = with lib; {
+    description = "a safe and secure chat client";
+    homepage = "https://coy.im/";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-cursed/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-cursed/default.nix
new file mode 100644
index 000000000000..8a04d75f5a63
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-cursed/default.nix
@@ -0,0 +1,53 @@
+{ lib
+, python3
+, fetchFromGitHub
+, wrapGAppsHook
+, gobject-introspection
+, libnotify
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "deltachat-cursed";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "adbenitez";
+    repo = "deltachat-cursed";
+    rev = "v${version}";
+    sha256 = "0zzzrzc8yxw6ffwfirbrr5ahbidbvlwdvgdg82zjsdjjbarxph8c";
+  };
+
+  nativeBuildInputs = [
+    python3.pkgs.setuptools-scm
+    wrapGAppsHook
+  ];
+
+  SETUPTOOLS_SCM_PRETEND_VERSION = version;
+
+  buildInputs = [
+    gobject-introspection
+    libnotify
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    deltachat
+    notify-py
+    pygobject3
+    urwid-readline
+  ];
+
+  dontWrapGApps = true;
+
+  preFixup = ''
+    makeWrapperArgs+=("''${gappsWrapperArgs[@]}")
+  '';
+
+  doCheck = false; # no tests implemented
+
+  meta = with lib; {
+    description = "Lightweight Delta Chat client";
+    homepage = "https://github.com/adbenitez/deltachat-cursed";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/default.nix
new file mode 100644
index 000000000000..41c7470a26d9
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/default.nix
@@ -0,0 +1,110 @@
+{ lib
+, copyDesktopItems
+, electron
+, esbuild
+, fetchFromGitHub
+, libdeltachat
+, makeDesktopItem
+, makeWrapper
+, nodePackages
+, pkg-config
+, rustPlatform
+, stdenv
+, CoreServices
+}:
+
+let
+  libdeltachat' = libdeltachat.overrideAttrs (old: rec {
+    version = "1.56.0";
+    src = fetchFromGitHub {
+      owner = "deltachat";
+      repo = "deltachat-core-rust";
+      rev = version;
+      sha256 = "07vcwbvpzcnvpls0hmpapi7v1npca8ydbx2i235k26xym8il89b7";
+    };
+    cargoDeps = rustPlatform.fetchCargoTarball {
+      inherit src;
+      name = "${old.pname}-${version}";
+      sha256 = "0pb1rcv45xa95ziqap94yy52fy02vh401iqsgi18nm1j6iyyngc8";
+    };
+  });
+  electronExec = if stdenv.isDarwin then
+    "${electron}/Applications/Electron.app/Contents/MacOS/Electron"
+  else
+    "${electron}/bin/electron";
+in nodePackages.deltachat-desktop.override rec {
+  pname = "deltachat-desktop";
+  version = "unstable-2021-08-04";
+
+  src = fetchFromGitHub {
+    owner = "deltachat";
+    repo = "deltachat-desktop";
+    rev = "2c47d6b7e46f4f68c7eb45508ab9e145af489ea1";
+    sha256 = "03b6j3cj2yanvsargh6q57bf1llg17yrqgmd14lp0wkam767kkfa";
+  };
+
+  nativeBuildInputs = [
+    esbuild
+    makeWrapper
+    pkg-config
+  ] ++ lib.optionals stdenv.isLinux [
+    copyDesktopItems
+  ];
+
+  buildInputs = [
+    libdeltachat'
+  ] ++ lib.optionals stdenv.isDarwin [
+    CoreServices
+  ];
+
+  ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
+  USE_SYSTEM_LIBDELTACHAT = "true";
+  VERSION_INFO_GIT_REF = src.rev;
+
+  postInstall = let
+    keep = lib.concatMapStringsSep " " (file: "! -name ${file}") [
+      "_locales" "build" "html-dist" "images" "index.js"
+      "node_modules" "themes" "tsc-dist"
+    ];
+  in ''
+    rm -r node_modules/deltachat-node/{deltachat-core-rust,prebuilds,src}
+
+    patchShebangs node_modules/sass/sass.js
+
+    npm run build
+
+    npm prune --production
+
+    find . -mindepth 1 -maxdepth 1 ${keep} -print0 | xargs -0 rm -r
+
+    mkdir -p $out/share/icons/hicolor/scalable/apps
+    ln -s $out/lib/node_modules/deltachat-desktop/build/icon.png \
+      $out/share/icons/hicolor/scalable/apps/deltachat.png
+
+    makeWrapper ${electronExec} $out/bin/deltachat \
+      --add-flags $out/lib/node_modules/deltachat-desktop
+  '';
+
+  desktopItems = lib.singleton (makeDesktopItem {
+    name = "deltachat";
+    exec = "deltachat %u";
+    icon = "deltachat";
+    desktopName = "Delta Chat";
+    genericName = "Delta Chat";
+    comment = meta.description;
+    categories = "Network;InstantMessaging;Chat;";
+    extraEntries = ''
+      StartupWMClass=DeltaChat
+      MimeType=x-scheme-handler/openpgp4fpr;x-scheme-handler/mailto;
+    '';
+  });
+
+  passthru.updateScript = ./update.sh;
+
+  meta = with lib; {
+    description = "Email-based instant messaging for Desktop";
+    homepage = "https://github.com/deltachat/deltachat-desktop";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/package.json b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/package.json
new file mode 100644
index 000000000000..f332352e4b61
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/package.json
@@ -0,0 +1,58 @@
+{
+  "name": "deltachat-desktop",
+  "version": "1.20.3",
+  "dependencies": {
+    "@blueprintjs/core": "^3.22.3",
+    "@mapbox/geojson-extent": "^1.0.0",
+    "application-config": "^1.0.1",
+    "array-differ": "^3.0.0",
+    "classnames": "^2.3.1",
+    "debounce": "^1.2.0",
+    "deltachat-node": "1.56.2",
+    "emoji-js-clean": "^4.0.0",
+    "emoji-mart": "^3.0.0",
+    "emoji-regex": "^9.2.2",
+    "error-stack-parser": "^2.0.6",
+    "filesize": "^6.1.0",
+    "fs-extra": "^8.1.0",
+    "mapbox-gl": "^1.12.0",
+    "mime-types": "^2.1.31",
+    "moment": "^2.27.0",
+    "node-fetch": "^2.6.1",
+    "path-browserify": "^1.0.1",
+    "punycode": "^2.1.1",
+    "rc": "^1.2.8",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "react-qr-reader": "^2.2.1",
+    "react-qr-svg": "^2.1.0",
+    "react-string-replace": "^0.4.4",
+    "react-virtualized": "^9.21.2",
+    "simple-markdown": "^0.7.1",
+    "source-map-support": "^0.5.19",
+    "tempy": "^0.3.0",
+    "url-parse": "^1.4.7",
+    "use-debounce": "^3.3.0",
+    "@babel/core": "^7.7.7",
+    "@types/debounce": "^1.2.0",
+    "@babel/preset-env": "^7.7.7",
+    "@babel/preset-react": "^7.7.4",
+    "@types/emoji-mart": "^3.0.2",
+    "@types/fs-extra": "^8.0.1",
+    "@types/mapbox-gl": "^0.54.5",
+    "@types/mime-types": "^2.1.0",
+    "@types/node": "^14.14.20",
+    "@types/node-fetch": "^2.5.7",
+    "@types/prop-types": "^15.7.3",
+    "@types/rc": "^1.1.0",
+    "@types/react": "^16.9.17",
+    "@types/react-dom": "^16.9.4",
+    "@types/react-virtualized": "^9.21.10",
+    "@types/url-parse": "^1.4.3",
+    "electron": "^13.1.6",
+    "glob-watcher": "^5.0.5",
+    "sass": "^1.26.5",
+    "typescript": "^3.9.7",
+    "xml-js": "^1.6.8"
+  }
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/update.sh
new file mode 100755
index 000000000000..162de501e617
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/deltachat-desktop/update.sh
@@ -0,0 +1,42 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p curl jq nix-prefetch
+
+set -euo pipefail
+cd "$(dirname "$0")"
+
+owner=deltachat
+repo=deltachat-desktop
+nixpkgs=../../../../..
+
+rev=$(
+    curl -s "https://api.github.com/repos/$owner/$repo/releases" |
+    jq 'map(select(.prerelease | not)) | .[0].tag_name' --raw-output
+)
+ver=$(echo "$rev" | sed 's/^v//')
+old_ver=$(sed -n 's/.*\bversion = "\(.*\)".*/\1/p' default.nix)
+if [ "$ver" = "$old_ver" ]; then
+    echo "Up to date: $ver"
+    exit
+fi
+echo "$old_ver -> $ver"
+
+sha256=$(nix-prefetch -f "$nixpkgs" deltachat-desktop --rev "$rev")
+sed -e "s#\\bversion = \".*\"#version = \"$ver\"#" \
+    -e "s#\\bsha256 = \".*\"#sha256 = \"$sha256\"#" \
+    -i default.nix
+src=$(nix-build "$nixpkgs" -A deltachat-desktop.src --no-out-link)
+
+jq '{ name, version, dependencies: (.dependencies + (.devDependencies | del(.["@typescript-eslint/eslint-plugin","@typescript-eslint/parser","esbuild","electron-builder","electron-devtools-installer","electron-notarize","esbuild","eslint","eslint-config-prettier","eslint-plugin-react-hooks","hallmark","prettier","tape","testcafe","testcafe-browser-provider-electron","testcafe-react-selectors","walk"]))) }' \
+    "$src/package.json" > package.json.new
+
+if cmp --quiet package.json{.new,}; then
+    echo "package.json not changed, skip updating nodePackages"
+    rm package.json.new
+else
+    echo "package.json changed, updating nodePackages"
+    mv package.json{.new,}
+
+    pushd ../../../../development/node-packages
+    ./generate.sh
+    popd
+fi
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/dino/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/dino/default.nix
new file mode 100644
index 000000000000..7f0127c28fd8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/dino/default.nix
@@ -0,0 +1,88 @@
+{ lib, stdenv, fetchFromGitHub
+, vala, cmake, ninja, wrapGAppsHook, pkg-config, gettext
+, gobject-introspection, gnome, glib, gdk-pixbuf, gtk3, glib-networking
+, xorg, libXdmcp, libxkbcommon
+, libnotify, libsoup, libgee
+, librsvg, libsignal-protocol-c
+, libgcrypt
+, epoxy
+, at-spi2-core
+, sqlite
+, dbus
+, gpgme
+, pcre
+, qrencode
+, icu
+ }:
+
+stdenv.mkDerivation rec {
+  pname = "dino";
+  version = "0.2.1";
+
+  src = fetchFromGitHub {
+    owner = "dino";
+    repo = "dino";
+    rev = "v${version}";
+    sha256 = "11m38syqzb1z92wmdaf45gryl6gjxwbcnk32j4p984ipqj2vdzd8";
+  };
+
+  nativeBuildInputs = [
+    vala
+    cmake
+    ninja
+    pkg-config
+    wrapGAppsHook
+    gettext
+  ];
+
+  buildInputs = [
+    qrencode
+    gobject-introspection
+    glib-networking
+    glib
+    libgee
+    gnome.adwaita-icon-theme
+    sqlite
+    gdk-pixbuf
+    gtk3
+    libnotify
+    gpgme
+    libgcrypt
+    libsoup
+    pcre
+    epoxy
+    at-spi2-core
+    dbus
+    icu
+    libsignal-protocol-c
+    librsvg
+  ] ++ lib.optionals (!stdenv.isDarwin) [
+    xorg.libxcb
+    xorg.libpthreadstubs
+    libXdmcp
+    libxkbcommon
+  ];
+
+  # Dino looks for plugins with a .so filename extension, even on macOS where
+  # .dylib is appropriate, and despite the fact that it builds said plugins with
+  # that as their filename extension
+  #
+  # Therefore, on macOS rename all of the plugins to use correct names that Dino
+  # will load
+  #
+  # See https://github.com/dino/dino/wiki/macOS
+  postFixup = lib.optionalString (stdenv.isDarwin) ''
+    cd "$out/lib/dino/plugins/"
+    for f in *.dylib; do
+      mv "$f" "$(basename "$f" .dylib).so"
+    done
+  '';
+
+  meta = with lib; {
+    description = "Modern Jabber/XMPP Client using GTK/Vala";
+    homepage = "https://github.com/dino/dino";
+    license = licenses.gpl3;
+    platforms = platforms.linux ++ platforms.darwin;
+    maintainers = with maintainers; [ mic92 qyliss ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/discord/base.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/discord/base.nix
new file mode 100644
index 000000000000..2d67236c90eb
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/discord/base.nix
@@ -0,0 +1,93 @@
+{ pname, version, src, binaryName, desktopName
+, autoPatchelfHook, makeDesktopItem, lib, stdenv, wrapGAppsHook
+, alsa-lib, at-spi2-atk, at-spi2-core, atk, cairo, cups, dbus, expat, fontconfig
+, freetype, gdk-pixbuf, glib, gtk3, libcxx, libdrm, libnotify, libpulseaudio, libuuid
+, libX11, libXScrnSaver, libXcomposite, libXcursor, libXdamage, libXext
+, libXfixes, libXi, libXrandr, libXrender, libXtst, libxcb, libxshmfence
+, mesa, nspr, nss, pango, systemd, libappindicator-gtk3, libdbusmenu
+, writeScript, common-updater-scripts
+}:
+
+let
+  inherit binaryName;
+in stdenv.mkDerivation rec {
+  inherit pname version src;
+
+  nativeBuildInputs = [
+    alsa-lib
+    autoPatchelfHook
+    cups
+    libdrm
+    libuuid
+    libXdamage
+    libX11
+    libXScrnSaver
+    libXtst
+    libxcb
+    libxshmfence
+    mesa
+    nss
+    wrapGAppsHook
+  ];
+
+  dontWrapGApps = true;
+
+  libPath = lib.makeLibraryPath [
+    libcxx systemd libpulseaudio libdrm mesa
+    stdenv.cc.cc alsa-lib atk at-spi2-atk at-spi2-core cairo cups dbus expat fontconfig freetype
+    gdk-pixbuf glib gtk3 libnotify libX11 libXcomposite libuuid
+    libXcursor libXdamage libXext libXfixes libXi libXrandr libXrender
+    libXtst nspr nss libxcb pango systemd libXScrnSaver
+    libappindicator-gtk3 libdbusmenu
+   ];
+
+  installPhase = ''
+    mkdir -p $out/{bin,opt/${binaryName},share/pixmaps}
+    mv * $out/opt/${binaryName}
+
+    chmod +x $out/opt/${binaryName}/${binaryName}
+    patchelf --set-interpreter ${stdenv.cc.bintools.dynamicLinker} \
+        $out/opt/${binaryName}/${binaryName}
+
+    wrapProgram $out/opt/${binaryName}/${binaryName} \
+        "''${gappsWrapperArgs[@]}" \
+        --prefix XDG_DATA_DIRS : "${gtk3}/share/gsettings-schemas/${gtk3.name}/" \
+        --prefix LD_LIBRARY_PATH : ${libPath}:$out/opt/${binaryName}
+
+    ln -s $out/opt/${binaryName}/${binaryName} $out/bin/
+    # Without || true the install would fail on case-insensitive filesystems
+    ln -s $out/opt/${binaryName}/${binaryName} $out/bin/${lib.strings.toLower binaryName} || true
+    ln -s $out/opt/${binaryName}/discord.png $out/share/pixmaps/${pname}.png
+
+    ln -s "${desktopItem}/share/applications" $out/share/
+  '';
+
+  desktopItem = makeDesktopItem {
+    name = pname;
+    exec = binaryName;
+    icon = pname;
+    inherit desktopName;
+    genericName = meta.description;
+    categories = "Network;InstantMessaging;";
+    mimeType = "x-scheme-handler/discord";
+  };
+
+  passthru.updateScript = writeScript "discord-update-script" ''
+    #!/usr/bin/env nix-shell
+    #!nix-shell -i bash -p curl gnugrep common-updater-scripts
+    set -eou pipefail;
+    url=$(curl -sI "https://discordapp.com/api/download/${builtins.replaceStrings ["discord-" "discord"] ["" "stable"] pname}?platform=linux&format=tar.gz" | grep -oP 'location: \K\S+')
+    version=''${url##https://dl*.discordapp.net/apps/linux/}
+    version=''${version%%/*.tar.gz}
+    update-source-version ${pname} "$version" --file=./pkgs/applications/networking/instant-messengers/discord/default.nix
+  '';
+
+  meta = with lib; {
+    description = "All-in-one cross-platform voice and text chat for gamers";
+    homepage = "https://discordapp.com/";
+    downloadPage = "https://discordapp.com/download";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ ldesgoui MP2E ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/discord/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/discord/default.nix
new file mode 100644
index 000000000000..058e20da0ce5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/discord/default.nix
@@ -0,0 +1,36 @@
+{ branch ? "stable", pkgs }:
+# Generated by ./update-discord.sh
+let
+  inherit (pkgs) callPackage fetchurl;
+in {
+  stable = callPackage ./base.nix rec {
+    pname = "discord";
+    binaryName = "Discord";
+    desktopName = "Discord";
+    version = "0.0.15";
+    src = fetchurl {
+      url = "https://dl.discordapp.net/apps/linux/${version}/discord-${version}.tar.gz";
+      sha256 = "0pn2qczim79hqk2limgh88fsn93sa8wvana74mpdk5n6x5afkvdd";
+    };
+  };
+  ptb = callPackage ./base.nix rec {
+    pname = "discord-ptb";
+    binaryName = "DiscordPTB";
+    desktopName = "Discord PTB";
+    version = "0.0.25";
+    src = fetchurl {
+      url = "https://dl-ptb.discordapp.net/apps/linux/${version}/discord-ptb-${version}.tar.gz";
+      sha256 = "082ygmsycicddpkv5s03vw3rjkrk4lgprq29z8b1hdjifvw93b21";
+    };
+  };
+  canary = callPackage ./base.nix rec {
+    pname = "discord-canary";
+    binaryName = "DiscordCanary";
+    desktopName = "Discord Canary";
+    version = "0.0.129";
+    src = fetchurl {
+      url = "https://dl-canary.discordapp.net/apps/linux/${version}/discord-canary-${version}.tar.gz";
+      sha256 = "sha256:1x49vvd363w9xyrzjgmynj2b320hzpz388fh5vpp0q0qk8q3gwkk";
+    };
+  };
+}.${branch}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-package.json b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-package.json
new file mode 100644
index 000000000000..5251b07d8d9f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-package.json
@@ -0,0 +1,134 @@
+{
+  "name": "element-desktop",
+  "productName": "Element",
+  "main": "lib/electron-main.js",
+  "version": "1.8.2",
+  "description": "A feature-rich client for Matrix.org",
+  "author": "Element",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/vector-im/element-desktop"
+  },
+  "license": "Apache-2.0",
+  "files": [],
+  "scripts": {
+    "i18n": "matrix-gen-i18n",
+    "prunei18n": "matrix-prune-i18n",
+    "diff-i18n": "cp src/i18n/strings/en_EN.json src/i18n/strings/en_EN_orig.json && matrix-gen-i18n && matrix-compare-i18n-files src/i18n/strings/en_EN_orig.json src/i18n/strings/en_EN.json",
+    "mkdirs": "mkdirp packages deploys",
+    "fetch": "yarn run mkdirs && node scripts/fetch-package.js",
+    "asar-webapp": "asar p webapp webapp.asar",
+    "start": "yarn run build:ts && yarn run build:res && electron .",
+    "lint": "yarn lint:types && yarn lint:js",
+    "lint:js": "eslint --max-warnings 0 src scripts hak",
+    "lint:js-fix": "eslint --fix src scripts hak",
+    "lint:types": "tsc --noEmit",
+    "build:native": "yarn run hak",
+    "build:native:universal": "yarn run hak --target x86_64-apple-darwin fetchandbuild && yarn run hak --target aarch64-apple-darwin fetchandbuild && yarn run hak --target x86_64-apple-darwin --target aarch64-apple-darwin copyandlink",
+    "build:32": "yarn run build:ts && yarn run build:res && electron-builder --ia32",
+    "build:64": "yarn run build:ts && yarn run build:res && electron-builder --x64",
+    "build:universal": "yarn run build:ts && yarn run build:res && electron-builder --universal",
+    "build": "yarn run build:ts && yarn run build:res && electron-builder",
+    "build:ts": "tsc",
+    "build:res": "node scripts/copy-res.js",
+    "docker:setup": "docker build -t element-desktop-dockerbuild dockerbuild",
+    "docker:build:native": "scripts/in-docker.sh yarn run hak",
+    "docker:build": "scripts/in-docker.sh yarn run build",
+    "docker:install": "scripts/in-docker.sh yarn install",
+    "debrepo": "scripts/mkrepo.sh",
+    "clean": "rimraf webapp.asar dist packages deploys lib",
+    "hak": "node scripts/hak/index.js"
+  },
+  "dependencies": {
+    "auto-launch": "^5.0.5",
+    "counterpart": "^0.18.6",
+    "electron-store": "^6.0.1",
+    "electron-window-state": "^5.0.3",
+    "minimist": "^1.2.3",
+    "png-to-ico": "^2.1.1",
+    "request": "^2.88.2"
+  },
+  "devDependencies": {
+    "@types/auto-launch": "^5.0.1",
+    "@types/counterpart": "^0.18.1",
+    "@types/minimist": "^1.2.1",
+    "@typescript-eslint/eslint-plugin": "^4.17.0",
+    "@typescript-eslint/parser": "^4.17.0",
+    "allchange": "^1.0.0",
+    "asar": "^2.0.1",
+    "chokidar": "^3.5.2",
+    "electron": "^13.1.9",
+    "electron-builder": "22.11.4",
+    "electron-builder-squirrel-windows": "22.11.4",
+    "electron-devtools-installer": "^3.1.1",
+    "electron-notarize": "^1.0.0",
+    "eslint": "7.18.0",
+    "eslint-config-google": "^0.14.0",
+    "eslint-plugin-matrix-org": "github:matrix-org/eslint-plugin-matrix-org#2306b3d4da4eba908b256014b979f1d3d43d2945",
+    "find-npm-prefix": "^1.0.2",
+    "fs-extra": "^8.1.0",
+    "glob": "^7.1.6",
+    "matrix-web-i18n": "github:matrix-org/matrix-web-i18n",
+    "mkdirp": "^1.0.3",
+    "needle": "^2.5.0",
+    "node-pre-gyp": "^0.15.0",
+    "pacote": "^11.3.5",
+    "rimraf": "^3.0.2",
+    "tar": "^6.1.2",
+    "typescript": "^4.1.3"
+  },
+  "hakDependencies": {
+    "matrix-seshat": "^2.3.0",
+    "keytar": "^5.6.0"
+  },
+  "build": {
+    "appId": "im.riot.app",
+    "electronVersion": "13.1.9",
+    "files": [
+      "package.json",
+      {
+        "from": ".hak/hakModules",
+        "to": "node_modules"
+      },
+      "lib/**"
+    ],
+    "extraResources": [
+      {
+        "from": "res/img",
+        "to": "img"
+      },
+      "webapp.asar"
+    ],
+    "linux": {
+      "target": "deb",
+      "category": "Network;InstantMessaging;Chat",
+      "maintainer": "support@element.io",
+      "desktop": {
+        "StartupWMClass": "element"
+      }
+    },
+    "mac": {
+      "category": "public.app-category.social-networking",
+      "darkModeSupport": true
+    },
+    "win": {
+      "target": {
+        "target": "squirrel"
+      },
+      "sign": "scripts/electron_winSign"
+    },
+    "directories": {
+      "output": "dist"
+    },
+    "afterPack": "scripts/electron_afterPack",
+    "afterSign": "scripts/electron_afterSign",
+    "protocols": [
+      {
+        "name": "element",
+        "schemes": [
+          "element"
+        ]
+      }
+    ]
+  }
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-yarndeps.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-yarndeps.nix
new file mode 100644
index 000000000000..12ec78a6af1c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop-yarndeps.nix
@@ -0,0 +1,5517 @@
+{ fetchurl, fetchgit, linkFarm, runCommand, gnutar }: rec {
+  offline_cache = linkFarm "offline" packages;
+  packages = [
+    {
+      name = "7zip_bin___7zip_bin_5.1.1.tgz";
+      path = fetchurl {
+        name = "7zip_bin___7zip_bin_5.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/7zip-bin/-/7zip-bin-5.1.1.tgz";
+        sha1 = "9274ec7460652f9c632c59addf24efb1684ef876";
+      };
+    }
+    {
+      name = "_actions_core___core_1.4.0.tgz";
+      path = fetchurl {
+        name = "_actions_core___core_1.4.0.tgz";
+        url  = "https://registry.yarnpkg.com/@actions/core/-/core-1.4.0.tgz";
+        sha1 = "cf2e6ee317e314b03886adfeb20e448d50d6e524";
+      };
+    }
+    {
+      name = "_actions_github___github_5.0.0.tgz";
+      path = fetchurl {
+        name = "_actions_github___github_5.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/@actions/github/-/github-5.0.0.tgz";
+        sha1 = "1754127976c50bd88b2e905f10d204d76d1472f8";
+      };
+    }
+    {
+      name = "_actions_http_client___http_client_1.0.11.tgz";
+      path = fetchurl {
+        name = "_actions_http_client___http_client_1.0.11.tgz";
+        url  = "https://registry.yarnpkg.com/@actions/http-client/-/http-client-1.0.11.tgz";
+        sha1 = "c58b12e9aa8b159ee39e7dd6cbd0e91d905633c0";
+      };
+    }
+    {
+      name = "_babel_code_frame___code_frame_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_code_frame___code_frame_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.14.5.tgz";
+        sha1 = "23b08d740e83f49c5e59945fbf1b43e80bbf4edb";
+      };
+    }
+    {
+      name = "_babel_generator___generator_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_generator___generator_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/generator/-/generator-7.14.8.tgz";
+        sha1 = "bf86fd6af96cf3b74395a8ca409515f89423e070";
+      };
+    }
+    {
+      name = "_babel_helper_function_name___helper_function_name_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_function_name___helper_function_name_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.14.5.tgz";
+        sha1 = "89e2c474972f15d8e233b52ee8c480e2cfcd50c4";
+      };
+    }
+    {
+      name = "_babel_helper_get_function_arity___helper_get_function_arity_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_get_function_arity___helper_get_function_arity_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.14.5.tgz";
+        sha1 = "25fbfa579b0937eee1f3b805ece4ce398c431815";
+      };
+    }
+    {
+      name = "_babel_helper_hoist_variables___helper_hoist_variables_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_hoist_variables___helper_hoist_variables_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-hoist-variables/-/helper-hoist-variables-7.14.5.tgz";
+        sha1 = "e0dd27c33a78e577d7c8884916a3e7ef1f7c7f8d";
+      };
+    }
+    {
+      name = "_babel_helper_split_export_declaration___helper_split_export_declaration_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_split_export_declaration___helper_split_export_declaration_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.14.5.tgz";
+        sha1 = "22b23a54ef51c2b7605d851930c1976dd0bc693a";
+      };
+    }
+    {
+      name = "_babel_helper_validator_identifier___helper_validator_identifier_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_helper_validator_identifier___helper_validator_identifier_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.8.tgz";
+        sha1 = "32be33a756f29e278a0d644fa08a2c9e0f88a34c";
+      };
+    }
+    {
+      name = "_babel_highlight___highlight_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_highlight___highlight_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.14.5.tgz";
+        sha1 = "6861a52f03966405001f6aa534a01a24d99e8cd9";
+      };
+    }
+    {
+      name = "_babel_parser___parser_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_parser___parser_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.8.tgz";
+        sha1 = "66fd41666b2d7b840bd5ace7f7416d5ac60208d4";
+      };
+    }
+    {
+      name = "_babel_runtime___runtime_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_runtime___runtime_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.14.8.tgz";
+        sha1 = "7119a56f421018852694290b9f9148097391b446";
+      };
+    }
+    {
+      name = "_babel_template___template_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_template___template_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/template/-/template-7.14.5.tgz";
+        sha1 = "a9bc9d8b33354ff6e55a9c60d1109200a68974f4";
+      };
+    }
+    {
+      name = "_babel_traverse___traverse_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_traverse___traverse_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.14.8.tgz";
+        sha1 = "c0253f02677c5de1a8ff9df6b0aacbec7da1a8ce";
+      };
+    }
+    {
+      name = "_babel_types___types_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_types___types_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/types/-/types-7.14.8.tgz";
+        sha1 = "38109de8fcadc06415fbd9b74df0065d4d41c728";
+      };
+    }
+    {
+      name = "_develar_schema_utils___schema_utils_2.6.5.tgz";
+      path = fetchurl {
+        name = "_develar_schema_utils___schema_utils_2.6.5.tgz";
+        url  = "https://registry.yarnpkg.com/@develar/schema-utils/-/schema-utils-2.6.5.tgz";
+        sha1 = "3ece22c5838402419a6e0425f85742b961d9b6c6";
+      };
+    }
+    {
+      name = "_electron_get___get_1.12.4.tgz";
+      path = fetchurl {
+        name = "_electron_get___get_1.12.4.tgz";
+        url  = "https://registry.yarnpkg.com/@electron/get/-/get-1.12.4.tgz";
+        sha1 = "a5971113fc1bf8fa12a8789dc20152a7359f06ab";
+      };
+    }
+    {
+      name = "_electron_universal___universal_1.0.5.tgz";
+      path = fetchurl {
+        name = "_electron_universal___universal_1.0.5.tgz";
+        url  = "https://registry.yarnpkg.com/@electron/universal/-/universal-1.0.5.tgz";
+        sha1 = "b812340e4ef21da2b3ee77b2b4d35c9b86defe37";
+      };
+    }
+    {
+      name = "_eslint_eslintrc___eslintrc_0.3.0.tgz";
+      path = fetchurl {
+        name = "_eslint_eslintrc___eslintrc_0.3.0.tgz";
+        url  = "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-0.3.0.tgz";
+        sha1 = "d736d6963d7003b6514e6324bec9c602ac340318";
+      };
+    }
+    {
+      name = "_jimp_bmp___bmp_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_bmp___bmp_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/bmp/-/bmp-0.16.1.tgz";
+        sha1 = "6e2da655b2ba22e721df0795423f34e92ef13768";
+      };
+    }
+    {
+      name = "_jimp_core___core_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_core___core_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/core/-/core-0.16.1.tgz";
+        sha1 = "68c4288f6ef7f31a0f6b859ba3fb28dae930d39d";
+      };
+    }
+    {
+      name = "_jimp_custom___custom_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_custom___custom_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/custom/-/custom-0.16.1.tgz";
+        sha1 = "28b659c59e20a1d75a0c46067bd3f4bd302cf9c5";
+      };
+    }
+    {
+      name = "_jimp_gif___gif_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_gif___gif_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/gif/-/gif-0.16.1.tgz";
+        sha1 = "d1f7c3a58f4666482750933af8b8f4666414f3ca";
+      };
+    }
+    {
+      name = "_jimp_jpeg___jpeg_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_jpeg___jpeg_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/jpeg/-/jpeg-0.16.1.tgz";
+        sha1 = "3b7bb08a4173f2f6d81f3049b251df3ee2ac8175";
+      };
+    }
+    {
+      name = "_jimp_plugin_blit___plugin_blit_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_blit___plugin_blit_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-blit/-/plugin-blit-0.16.1.tgz";
+        sha1 = "09ea919f9d326de3b9c2826fe4155da37dde8edb";
+      };
+    }
+    {
+      name = "_jimp_plugin_blur___plugin_blur_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_blur___plugin_blur_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-blur/-/plugin-blur-0.16.1.tgz";
+        sha1 = "e614fa002797dcd662e705d4cea376e7db968bf5";
+      };
+    }
+    {
+      name = "_jimp_plugin_circle___plugin_circle_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_circle___plugin_circle_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-circle/-/plugin-circle-0.16.1.tgz";
+        sha1 = "20e3194a67ca29740aba2630fd4d0a89afa27491";
+      };
+    }
+    {
+      name = "_jimp_plugin_color___plugin_color_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_color___plugin_color_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-color/-/plugin-color-0.16.1.tgz";
+        sha1 = "0f298ba74dee818b663834cd80d53e56f3755233";
+      };
+    }
+    {
+      name = "_jimp_plugin_contain___plugin_contain_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_contain___plugin_contain_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-contain/-/plugin-contain-0.16.1.tgz";
+        sha1 = "3c5f5c495fd9bb08a970739d83694934f58123f2";
+      };
+    }
+    {
+      name = "_jimp_plugin_cover___plugin_cover_0.16.1.tgz";
+      path = fetchurl {
+        name = "_jimp_plugin_cover___plugin_cover_0.16.1.tgz";
+        url  = "https://registry.yarnpkg.com/@jimp/plugin-cover/-/plugin-cover-0.16.1.tgz";
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+    }
+    {
+      name = "wrap_ansi___wrap_ansi_7.0.0.tgz";
+      path = fetchurl {
+        name = "wrap_ansi___wrap_ansi_7.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz";
+        sha1 = "67e145cff510a6a6984bdf1152911d69d2eb9e43";
+      };
+    }
+    {
+      name = "wrappy___wrappy_1.0.2.tgz";
+      path = fetchurl {
+        name = "wrappy___wrappy_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz";
+        sha1 = "b5243d8f3ec1aa35f1364605bc0d1036e30ab69f";
+      };
+    }
+    {
+      name = "write_file_atomic___write_file_atomic_3.0.3.tgz";
+      path = fetchurl {
+        name = "write_file_atomic___write_file_atomic_3.0.3.tgz";
+        url  = "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-3.0.3.tgz";
+        sha1 = "56bd5c5a5c70481cd19c571bd39ab965a5de56e8";
+      };
+    }
+    {
+      name = "xdg_basedir___xdg_basedir_4.0.0.tgz";
+      path = fetchurl {
+        name = "xdg_basedir___xdg_basedir_4.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-4.0.0.tgz";
+        sha1 = "4bc8d9984403696225ef83a1573cbbcb4e79db13";
+      };
+    }
+    {
+      name = "xhr___xhr_2.6.0.tgz";
+      path = fetchurl {
+        name = "xhr___xhr_2.6.0.tgz";
+        url  = "https://registry.yarnpkg.com/xhr/-/xhr-2.6.0.tgz";
+        sha1 = "b69d4395e792b4173d6b7df077f0fc5e4e2b249d";
+      };
+    }
+    {
+      name = "xml_parse_from_string___xml_parse_from_string_1.0.1.tgz";
+      path = fetchurl {
+        name = "xml_parse_from_string___xml_parse_from_string_1.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/xml-parse-from-string/-/xml-parse-from-string-1.0.1.tgz";
+        sha1 = "a9029e929d3dbcded169f3c6e28238d95a5d5a28";
+      };
+    }
+    {
+      name = "xml2js___xml2js_0.4.23.tgz";
+      path = fetchurl {
+        name = "xml2js___xml2js_0.4.23.tgz";
+        url  = "https://registry.yarnpkg.com/xml2js/-/xml2js-0.4.23.tgz";
+        sha1 = "a0c69516752421eb2ac758ee4d4ccf58843eac66";
+      };
+    }
+    {
+      name = "xmlbuilder___xmlbuilder_15.1.1.tgz";
+      path = fetchurl {
+        name = "xmlbuilder___xmlbuilder_15.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-15.1.1.tgz";
+        sha1 = "9dcdce49eea66d8d10b42cae94a79c3c8d0c2ec5";
+      };
+    }
+    {
+      name = "xmlbuilder___xmlbuilder_9.0.7.tgz";
+      path = fetchurl {
+        name = "xmlbuilder___xmlbuilder_9.0.7.tgz";
+        url  = "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-9.0.7.tgz";
+        sha1 = "132ee63d2ec5565c557e20f4c22df9aca686b10d";
+      };
+    }
+    {
+      name = "xmlbuilder___xmlbuilder_11.0.1.tgz";
+      path = fetchurl {
+        name = "xmlbuilder___xmlbuilder_11.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-11.0.1.tgz";
+        sha1 = "be9bae1c8a046e76b31127726347d0ad7002beb3";
+      };
+    }
+    {
+      name = "xmldom___xmldom_0.5.0.tgz";
+      path = fetchurl {
+        name = "xmldom___xmldom_0.5.0.tgz";
+        url  = "https://registry.yarnpkg.com/xmldom/-/xmldom-0.5.0.tgz";
+        sha1 = "193cb96b84aa3486127ea6272c4596354cb4962e";
+      };
+    }
+    {
+      name = "xtend___xtend_4.0.2.tgz";
+      path = fetchurl {
+        name = "xtend___xtend_4.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz";
+        sha1 = "bb72779f5fa465186b1f438f674fa347fdb5db54";
+      };
+    }
+    {
+      name = "y18n___y18n_5.0.8.tgz";
+      path = fetchurl {
+        name = "y18n___y18n_5.0.8.tgz";
+        url  = "https://registry.yarnpkg.com/y18n/-/y18n-5.0.8.tgz";
+        sha1 = "7f4934d0f7ca8c56f95314939ddcd2dd91ce1d55";
+      };
+    }
+    {
+      name = "yaku___yaku_0.16.7.tgz";
+      path = fetchurl {
+        name = "yaku___yaku_0.16.7.tgz";
+        url  = "https://registry.yarnpkg.com/yaku/-/yaku-0.16.7.tgz";
+        sha1 = "1d195c78aa9b5bf8479c895b9504fd4f0847984e";
+      };
+    }
+    {
+      name = "yallist___yallist_3.1.1.tgz";
+      path = fetchurl {
+        name = "yallist___yallist_3.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz";
+        sha1 = "dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd";
+      };
+    }
+    {
+      name = "yallist___yallist_4.0.0.tgz";
+      path = fetchurl {
+        name = "yallist___yallist_4.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz";
+        sha1 = "9bb92790d9c0effec63be73519e11a35019a3a72";
+      };
+    }
+    {
+      name = "yargs_parser___yargs_parser_20.2.9.tgz";
+      path = fetchurl {
+        name = "yargs_parser___yargs_parser_20.2.9.tgz";
+        url  = "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.9.tgz";
+        sha1 = "2eb7dc3b0289718fc295f362753845c41a0c94ee";
+      };
+    }
+    {
+      name = "yargs___yargs_17.0.1.tgz";
+      path = fetchurl {
+        name = "yargs___yargs_17.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/yargs/-/yargs-17.0.1.tgz";
+        sha1 = "6a1ced4ed5ee0b388010ba9fd67af83b9362e0bb";
+      };
+    }
+    {
+      name = "yauzl___yauzl_2.10.0.tgz";
+      path = fetchurl {
+        name = "yauzl___yauzl_2.10.0.tgz";
+        url  = "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz";
+        sha1 = "c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9";
+      };
+    }
+    {
+      name = "zip_stream___zip_stream_4.1.0.tgz";
+      path = fetchurl {
+        name = "zip_stream___zip_stream_4.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/zip-stream/-/zip-stream-4.1.0.tgz";
+        sha1 = "51dd326571544e36aa3f756430b313576dc8fc79";
+      };
+    }
+  ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop.nix
new file mode 100644
index 000000000000..1cd7921cb9bd
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-desktop.nix
@@ -0,0 +1,113 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, makeWrapper
+, makeDesktopItem
+, mkYarnPackage
+, electron
+, element-web
+, callPackage
+, Security
+, AppKit
+, CoreServices
+
+, useWayland ? false
+}:
+# Notes for maintainers:
+# * versions of `element-web` and `element-desktop` should be kept in sync.
+# * the Yarn dependency expression must be updated with `./update-element-desktop.sh <git release tag>`
+
+let
+  executableName = "element-desktop";
+  version = "1.8.2";
+  src = fetchFromGitHub {
+    owner = "vector-im";
+    repo = "element-desktop";
+    rev = "v${version}";
+    sha256 = "sha256-6DPMfx3LF45YWn2do02zDMLYZGBgBrOMJx3XBAO0ZyM=";
+  };
+  electron_exec = if stdenv.isDarwin then "${electron}/Applications/Electron.app/Contents/MacOS/Electron" else "${electron}/bin/electron";
+in
+mkYarnPackage rec {
+  name = "element-desktop-${version}";
+  inherit version src;
+
+  packageJSON = ./element-desktop-package.json;
+  yarnNix = ./element-desktop-yarndeps.nix;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  seshat = callPackage ./seshat { inherit CoreServices; };
+  keytar = callPackage ./keytar { inherit Security AppKit; };
+
+  buildPhase = ''
+    runHook preBuild
+    export HOME=$(mktemp -d)
+    pushd deps/element-desktop/
+    npx tsc
+    yarn run i18n
+    node ./scripts/copy-res.js
+    popd
+    rm -rf node_modules/matrix-seshat node_modules/keytar
+    ln -s $keytar node_modules/keytar
+    ln -s $seshat node_modules/matrix-seshat
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    # resources
+    mkdir -p "$out/share/element"
+    ln -s '${element-web}' "$out/share/element/webapp"
+    cp -r './deps/element-desktop' "$out/share/element/electron"
+    cp -r './deps/element-desktop/res/img' "$out/share/element"
+    rm "$out/share/element/electron/node_modules"
+    cp -r './node_modules' "$out/share/element/electron"
+    cp $out/share/element/electron/lib/i18n/strings/en_EN.json $out/share/element/electron/lib/i18n/strings/en-us.json
+    ln -s $out/share/element/electron/lib/i18n/strings/en{-us,}.json
+
+    # icons
+    for icon in $out/share/element/electron/build/icons/*.png; do
+      mkdir -p "$out/share/icons/hicolor/$(basename $icon .png)/apps"
+      ln -s "$icon" "$out/share/icons/hicolor/$(basename $icon .png)/apps/element.png"
+    done
+
+    # desktop item
+    mkdir -p "$out/share"
+    ln -s "${desktopItem}/share/applications" "$out/share/applications"
+
+    # executable wrapper
+    makeWrapper '${electron_exec}' "$out/bin/${executableName}" \
+      --add-flags "$out/share/element/electron${lib.optionalString useWayland " --enable-features=UseOzonePlatform --ozone-platform=wayland"}"
+  '';
+
+  # Do not attempt generating a tarball for element-web again.
+  # note: `doDist = false;` does not work.
+  distPhase = ''
+    true
+  '';
+
+  # The desktop item properties should be kept in sync with data from upstream:
+  # https://github.com/vector-im/element-desktop/blob/develop/package.json
+  desktopItem = makeDesktopItem {
+    name = "element-desktop";
+    exec = "${executableName} %u";
+    icon = "element";
+    desktopName = "Element (Riot)";
+    genericName = "Matrix Client";
+    comment = meta.description;
+    categories = "Network;InstantMessaging;Chat;";
+    extraEntries = ''
+      StartupWMClass=element
+      MimeType=x-scheme-handler/element;
+    '';
+  };
+
+  meta = with lib; {
+    description = "A feature-rich client for Matrix.org";
+    homepage = "https://element.io/";
+    changelog = "https://github.com/vector-im/element-desktop/blob/v${version}/CHANGELOG.md";
+    license = licenses.asl20;
+    maintainers = teams.matrix.members;
+    inherit (electron.meta) platforms;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-web.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-web.nix
new file mode 100644
index 000000000000..fdea75c78af7
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/element-web.nix
@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchurl, writeText, jq, conf ? {} }:
+
+# Note for maintainers:
+# Versions of `element-web` and `element-desktop` should be kept in sync.
+
+let
+  noPhoningHome = {
+    disable_guests = true; # disable automatic guest account registration at matrix.org
+    piwik = false; # disable analytics
+  };
+  configOverrides = writeText "element-config-overrides.json" (builtins.toJSON (noPhoningHome // conf));
+
+in stdenv.mkDerivation rec {
+  pname = "element-web";
+  version = "1.8.2";
+
+  src = fetchurl {
+    url = "https://github.com/vector-im/element-web/releases/download/v${version}/element-v${version}.tar.gz";
+    sha256 = "sha256-SgVxYPmdgFn6Nll1a6b1Sn2H5I0Vkjorn3gA9d5FamQ=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/
+    cp -R . $out/
+    ${jq}/bin/jq -s '.[0] * .[1]' "config.sample.json" "${configOverrides}" > "$out/config.json"
+
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "A glossy Matrix collaboration client for the web";
+    homepage = "https://element.io/";
+    changelog = "https://github.com/vector-im/element-web/blob/v${version}/CHANGELOG.md";
+    maintainers = lib.teams.matrix.members;
+    license = lib.licenses.asl20;
+    platforms = lib.platforms.all;
+    hydraPlatforms = [];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
new file mode 100644
index 000000000000..f848601874a4
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
@@ -0,0 +1,46 @@
+{ lib, stdenv, fetchFromGitHub, nodejs-14_x, python3, callPackage
+, fixup_yarn_lock, yarn, pkg-config, libsecret, xcbuild, Security, AppKit }:
+
+stdenv.mkDerivation rec {
+  pname = "keytar";
+  version = "7.7.0";
+
+  src = fetchFromGitHub {
+    owner = "atom";
+    repo = "node-keytar";
+    rev = "v${version}";
+    sha256 = "0ajvr4kjbyw2shb1y14c0dsghdlnq30f19hk2sbzj6n9y3xa3pmi";
+  };
+
+  nativeBuildInputs = [ nodejs-14_x python3 yarn pkg-config ]
+    ++ lib.optional  stdenv.isDarwin xcbuild;
+  buildInputs = lib.optionals (!stdenv.isDarwin) [ libsecret ]
+    ++ lib.optionals stdenv.isDarwin [ Security AppKit ];
+
+  npm_config_nodedir = nodejs-14_x;
+
+  yarnOfflineCache = (callPackage ./yarn.nix {}).offline_cache;
+
+  buildPhase = ''
+    cp ${./yarn.lock} ./yarn.lock
+    chmod u+w . ./yarn.lock
+    export HOME=$PWD/tmp
+    mkdir -p $HOME
+    yarn config --offline set yarn-offline-mirror ${yarnOfflineCache}
+    ${fixup_yarn_lock}/bin/fixup_yarn_lock yarn.lock
+    yarn install --offline --frozen-lockfile --ignore-platform --ignore-scripts --no-progress --non-interactive
+    patchShebangs node_modules/
+    node_modules/.bin/node-gyp rebuild
+  '';
+
+  doCheck = false;
+
+  installPhase = ''
+    shopt -s extglob
+    rm -rf node_modules
+    rm -rf $HOME
+    mkdir -p $out
+    cp -r ./!(build) $out
+    install -D -t $out/build/Release build/Release/keytar.node
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/update.sh
new file mode 100755
index 000000000000..11d986f4fdac
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/update.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=../ -i bash -p wget yarn2nix yarn
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates the Yarn dependency lock files."
+  echo "Usage: $0 <git release tag>"
+  exit 1
+fi
+
+SRC="https://raw.githubusercontent.com/atom/node-keytar/$1"
+
+wget "$SRC/package-lock.json"
+wget "$SRC/package.json"
+rm -f yarn.lock
+yarn import
+yarn2nix > yarn.nix
+rm -rf node_modules package.json package-lock.json
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.lock b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.lock
new file mode 100644
index 000000000000..5a3abec6ded8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.lock
@@ -0,0 +1,2531 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@ungap/promise-all-settled@1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@ungap/promise-all-settled/-/promise-all-settled-1.1.2.tgz#aa58042711d6e3275dd37dc597e5d31e8c290a44"
+  integrity sha512-sL/cEvJWAnClXw0wHk85/2L0G6Sj8UB0Ctc1TEMbKSsmpRosqhwj9gWgFRZSrBr2f9tiXISwNhCPmlfqUqyb9Q==
+
+abbrev@1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.0.tgz#d0554c2256636e2f56e7c2e5ad183f859428d81f"
+  integrity sha1-0FVMIlZjbi9W58LlrRg/hZQo2B8=
+
+after@~0.8.1:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
+  integrity sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=
+
+ajv@^6.12.3:
+  version "6.12.4"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.4.tgz#0614facc4522127fa713445c6bfd3ebd376e2234"
+  integrity sha512-eienB2c9qVQs2KWexhkrdMLVDoIQCz5KSeLxwg9Lzk4DOfBtIK9PQwwufcsn1jjGuf9WZmqPMbGxOzfcuphJCQ==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+amdefine@>=0.0.4:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
+  integrity sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=
+
+ansi-colors@4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-4.1.1.tgz#cbb9ae256bf750af1eab344f229aa27fe94ba348"
+  integrity sha512-JoX0apGbHaUJBNl6yF+p6JAFYZ666/hhCGKN5t9QFjbJQKUU/g8MNbFDbvfrgKXvI1QpZplPOnwIo99lX/AAmA==
+
+ansi-regex@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
+  integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
+
+ansi-regex@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
+  integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
+
+ansi-styles@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
+  integrity sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
+
+ansi-styles@^4.0.0, ansi-styles@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz#edd803628ae71c04c85ae7a0906edad34b648937"
+  integrity sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==
+  dependencies:
+    color-convert "^2.0.1"
+
+ansi@^0.3.0, ansi@~0.3.0, ansi@~0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/ansi/-/ansi-0.3.1.tgz#0c42d4fb17160d5a9af1e484bace1c66922c1b21"
+  integrity sha1-DELU+xcWDVqa8eSEus4cZpIsGyE=
+
+anymatch@~3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz#c55ecf02185e2469259399310c173ce31233b142"
+  integrity sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==
+  dependencies:
+    normalize-path "^3.0.0"
+    picomatch "^2.0.4"
+
+aproba@^1.0.3:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.1.2.tgz#45c6629094de4e96f693ef7eab74ae079c240fc1"
+  integrity sha512-ZpYajIfO0j2cOFTO955KUMIKNmj6zhX8kVztMAxFsDaMwz+9Z9SV0uou2pC9HJqcfpffOsjnbrDMvkNy+9RXPw==
+
+are-we-there-yet@~1.0.0:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.0.6.tgz#a2d28c93102aa6cc96245a26cb954de06ec53f0c"
+  integrity sha1-otKMkxAqpsyWJFomy5VN4G7FPww=
+  dependencies:
+    delegates "^1.0.0"
+    readable-stream "^2.0.0 || ^1.1.13"
+
+are-we-there-yet@~1.1.2:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz#bb5dca382bb94f05e15194373d16fd3ba1ca110d"
+  integrity sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=
+  dependencies:
+    delegates "^1.0.0"
+    readable-stream "^2.0.6"
+
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+  integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
+
+array-index@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/array-index/-/array-index-1.0.0.tgz#ec56a749ee103e4e08c790b9c353df16055b97f9"
+  integrity sha1-7FanSe4QPk4Ix5C5w1PfFgVbl/k=
+  dependencies:
+    debug "^2.2.0"
+    es6-symbol "^3.0.2"
+
+asn1@~0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
+  integrity sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=
+
+assert-plus@1.0.0, assert-plus@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
+  integrity sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=
+
+assertion-error@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
+  integrity sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==
+
+asynckit@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
+  integrity sha1-x57Zf380y48robyXkLzDZkdLS3k=
+
+aws-sign2@~0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
+  integrity sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=
+
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+  version "1.10.1"
+  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.10.1.tgz#e1e82e4f3e999e2cfd61b161280d16a111f86428"
+  integrity sha512-zg7Hz2k5lI8kb7U32998pRRFin7zJlkfezGJjUc2heaD4Pw2wObakCDVzkKztTm/Ln7eiVvYsjqak0Ed4LkMDA==
+
+babel-code-frame@^6.26.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
+  integrity sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=
+  dependencies:
+    chalk "^1.1.3"
+    esutils "^2.0.2"
+    js-tokens "^3.0.2"
+
+babel-core@^6.26.0, babel-core@^6.26.3:
+  version "6.26.3"
+  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz#b2e2f09e342d0f0c88e2f02e067794125e75c207"
+  integrity sha512-6jyFLuDmeidKmUEb3NM+/yawG0M2bDZ9Z1qbZP59cyHLz8kYGKYwpJP0UwUKKUiTRNvxfLesJnTedqczP7cTDA==
+  dependencies:
+    babel-code-frame "^6.26.0"
+    babel-generator "^6.26.0"
+    babel-helpers "^6.24.1"
+    babel-messages "^6.23.0"
+    babel-register "^6.26.0"
+    babel-runtime "^6.26.0"
+    babel-template "^6.26.0"
+    babel-traverse "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    convert-source-map "^1.5.1"
+    debug "^2.6.9"
+    json5 "^0.5.1"
+    lodash "^4.17.4"
+    minimatch "^3.0.4"
+    path-is-absolute "^1.0.1"
+    private "^0.1.8"
+    slash "^1.0.0"
+    source-map "^0.5.7"
+
+babel-generator@^6.26.0:
+  version "6.26.1"
+  resolved "https://registry.yarnpkg.com/babel-generator/-/babel-generator-6.26.1.tgz#1844408d3b8f0d35a404ea7ac180f087a601bd90"
+  integrity sha512-HyfwY6ApZj7BYTcJURpM5tznulaBvyio7/0d4zFOeMPUmfxkCjHocCuoLa2SAGzBI8AREcH3eP3758F672DppA==
+  dependencies:
+    babel-messages "^6.23.0"
+    babel-runtime "^6.26.0"
+    babel-types "^6.26.0"
+    detect-indent "^4.0.0"
+    jsesc "^1.3.0"
+    lodash "^4.17.4"
+    source-map "^0.5.7"
+    trim-right "^1.0.1"
+
+babel-helper-function-name@^6.24.1:
+  version "6.24.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-6.24.1.tgz#d3475b8c03ed98242a25b48351ab18399d3580a9"
+  integrity sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=
+  dependencies:
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+    babel-runtime "^6.22.0"
+    babel-template "^6.24.1"
+    babel-traverse "^6.24.1"
+    babel-types "^6.24.1"
+
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+  version "6.24.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-6.24.1.tgz#8f7782aa93407c41d3aa50908f89b031b1b6853d"
+  integrity sha1-j3eCqpNAfEHTqlCQj4mwMbG2hT0=
+  dependencies:
+    babel-runtime "^6.22.0"
+    babel-types "^6.24.1"
+
+babel-helper-remap-async-to-generator@^6.24.1:
+  version "6.24.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-remap-async-to-generator/-/babel-helper-remap-async-to-generator-6.24.1.tgz#5ec581827ad723fecdd381f1c928390676e4551b"
+  integrity sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=
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+    babel-runtime "^6.22.0"
+    babel-template "^6.24.1"
+    babel-traverse "^6.24.1"
+    babel-types "^6.24.1"
+
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+  version "6.24.1"
+  resolved "https://registry.yarnpkg.com/babel-helpers/-/babel-helpers-6.24.1.tgz#3471de9caec388e5c850e597e58a26ddf37602b2"
+  integrity sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=
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+    babel-template "^6.24.1"
+
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+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
+  integrity sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=
+  dependencies:
+    babel-runtime "^6.22.0"
+
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+  version "6.13.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz#cad9cad1191b5ad634bf30ae0872391e0647be95"
+  integrity sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU=
+
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+  version "6.24.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-async-to-generator/-/babel-plugin-transform-async-to-generator-6.24.1.tgz#6536e378aff6cb1d5517ac0e40eb3e9fc8d08761"
+  integrity sha1-ZTbjeK/2yx1VF6wOQOs+n8jQh2E=
+  dependencies:
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+    babel-plugin-syntax-async-functions "^6.8.0"
+    babel-runtime "^6.22.0"
+
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+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-register/-/babel-register-6.26.0.tgz#6ed021173e2fcb486d7acb45c6009a856f647071"
+  integrity sha1-btAhFz4vy0htestFxgCahW9kcHE=
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+    babel-runtime "^6.26.0"
+    core-js "^2.5.0"
+    home-or-tmp "^2.0.0"
+    lodash "^4.17.4"
+    mkdirp "^0.5.1"
+    source-map-support "^0.4.15"
+
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+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz#0a9489f144de70efb3ce4300accdb329e2fc543b"
+  integrity sha1-CpSJ8UTecO+zzkMArM2zKeL8VDs=
+  dependencies:
+    core-js "^2.4.0"
+    regenerator-runtime "^0.10.0"
+
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+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
+  integrity sha1-llxwWGaOgrVde/4E/yM3vItWR/4=
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+    regenerator-runtime "^0.11.0"
+
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+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.26.0.tgz#de03e2d16396b069f46dd9fff8521fb1a0e35e02"
+  integrity sha1-3gPi0WOWsGn0bdn/+FIfsaDjXgI=
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+    babel-traverse "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    lodash "^4.17.4"
+
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+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz#46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee"
+  integrity sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=
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+    babel-messages "^6.23.0"
+    babel-runtime "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    debug "^2.6.8"
+    globals "^9.18.0"
+    invariant "^2.2.2"
+    lodash "^4.17.4"
+
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+  version "6.25.0"
+  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.25.0.tgz#70afb248d5660e5d18f811d91c8303b54134a18e"
+  integrity sha1-cK+ySNVmDl0Y+BHZHIMDtUE0oY4=
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+    esutils "^2.0.2"
+    lodash "^4.2.0"
+    to-fast-properties "^1.0.1"
+
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+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
+  integrity sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=
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+    esutils "^2.0.2"
+    lodash "^4.17.4"
+    to-fast-properties "^1.0.3"
+
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+  version "6.18.0"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
+  integrity sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ==
+
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+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+
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+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.5.1.tgz#1b1b440160a5bf7ad40b650f095963481903930a"
+  integrity sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==
+
+bcrypt-pbkdf@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
+  integrity sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=
+  dependencies:
+    tweetnacl "^0.14.3"
+
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+  version "1.6.48"
+  resolved "https://registry.yarnpkg.com/big-integer/-/big-integer-1.6.48.tgz#8fd88bd1632cba4a1c8c3e3d7159f08bb95b4b9e"
+  integrity sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w==
+
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+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.2.0.tgz#75f502eeaf9ffde42fc98829645be4ea76bd9e2d"
+  integrity sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==
+
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+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/binary/-/binary-0.3.0.tgz#9f60553bc5ce8c3386f3b553cff47462adecaa79"
+  integrity sha1-n2BVO8XOjDOG87VTz/R0Yq3sqnk=
+  dependencies:
+    buffers "~0.1.1"
+    chainsaw "~0.1.0"
+
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+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-4.0.3.tgz#12d6287adc29080e22a705e5764b2a9522cdc489"
+  integrity sha512-fs4G6/Hu4/EE+F75J8DuN/0IpQqNjAdC7aEQv7Qt8MHGUH7Ckv2MwTEEeN9QehD0pfIDkMI1bkHYkKy7xHyKIg==
+  dependencies:
+    buffer "^5.5.0"
+    inherits "^2.0.4"
+    readable-stream "^3.4.0"
+
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+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-3.0.1.tgz#1cbb439299609e419b5a74d7fce2f8b37d8e5c6f"
+  integrity sha512-jrCW5ZhfQ/Vt07WX1Ngs+yn9BDqPL/gw28S7s9H6QK/gupnizNzJAss5akW20ISgOrbLTlXOOCTJeNUQqruAWQ==
+  dependencies:
+    readable-stream "^3.0.1"
+
+block-stream@*:
+  version "0.0.9"
+  resolved "https://registry.yarnpkg.com/block-stream/-/block-stream-0.0.9.tgz#13ebfe778a03205cfe03751481ebb4b3300c126a"
+  integrity sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=
+  dependencies:
+    inherits "~2.0.0"
+
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+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.2.tgz#9f229c15be272454ffa973ace0dbee79a1b0c36f"
+  integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
+
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+  version "3.4.7"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
+  integrity sha1-9y12C+Cbf3bQjtj66Ysomo0F+rM=
+
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+  version "1.1.8"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.8.tgz#c07b211c7c952ec1f8efd51a77ef0d1d3990a292"
+  integrity sha1-wHshHHyVLsH479Uad+8NHTmQopI=
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
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+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
+  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
+  dependencies:
+    fill-range "^7.0.1"
+
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+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
+  integrity sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==
+
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+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-0.1.2.tgz#15f4b9bcef012044df31142c14333caf6e0260d0"
+  integrity sha512-RiWIenusJsmI2KcvqQABB83tLxCByE3upSP8QU3rJDMVFGPWLvPQJt/O1Su9moRWeH7d+Q2HYb68f6+v+tw2vg==
+
+buffer-indexof-polyfill@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/buffer-indexof-polyfill/-/buffer-indexof-polyfill-1.0.2.tgz#d2732135c5999c64b277fcf9b1abe3498254729c"
+  integrity sha512-I7wzHwA3t1/lwXQh+A5PbNvJxgfo5r3xulgpYDB5zckTu/Z9oUK9biouBKQUjEqzaz3HnAT6TYoovmE+GqSf7A==
+
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+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/buffer-shims/-/buffer-shims-1.0.0.tgz#9978ce317388c649ad8793028c3477ef044a8b51"
+  integrity sha1-mXjOMXOIxkmth5MCjDR37wRKi1E=
+
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+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/buffer/-/buffer-5.7.1.tgz#ba62e7c13133053582197160851a8f648e99eed0"
+  integrity sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==
+  dependencies:
+    base64-js "^1.3.1"
+    ieee754 "^1.1.13"
+
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+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/buffers/-/buffers-0.1.1.tgz#b24579c3bed4d6d396aeee6d9a8ae7f5482ab7bb"
+  integrity sha1-skV5w77U1tOWru5tmorn9Ugqt7s=
+
+camelcase@^2.0.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
+  integrity sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=
+
+camelcase@^6.0.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-6.2.0.tgz#924af881c9d525ac9d87f40d964e5cea982a1809"
+  integrity sha512-c7wVvbw3f37nuobQNtgsgG9POC9qMbNuMQmTCqZv23b6MIz0fcYpBiOlv9gEN/hdLdnZTDQhg6e9Dq5M1vKvfg==
+
+caseless@~0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
+  integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
+
+chai@^4.2.0:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.4.tgz#b55e655b31e1eac7099be4c08c21964fce2e6c49"
+  integrity sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==
+  dependencies:
+    assertion-error "^1.1.0"
+    check-error "^1.0.2"
+    deep-eql "^3.0.1"
+    get-func-name "^2.0.0"
+    pathval "^1.1.1"
+    type-detect "^4.0.5"
+
+chainsaw@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/chainsaw/-/chainsaw-0.1.0.tgz#5eab50b28afe58074d0d58291388828b5e5fbc98"
+  integrity sha1-XqtQsor+WAdNDVgpE4iCi15fvJg=
+  dependencies:
+    traverse ">=0.3.0 <0.4"
+
+chalk@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
+  integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
+  dependencies:
+    ansi-styles "^2.2.1"
+    escape-string-regexp "^1.0.2"
+    has-ansi "^2.0.0"
+    strip-ansi "^3.0.0"
+    supports-color "^2.0.0"
+
+chalk@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.0.tgz#4e14870a618d9e2edd97dd8345fd9d9dc315646a"
+  integrity sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
+check-error@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
+  integrity sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=
+
+chokidar@3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.5.1.tgz#ee9ce7bbebd2b79f49f304799d5468e31e14e68a"
+  integrity sha512-9+s+Od+W0VJJzawDma/gvBNQqkTiqYTWLuZoyAsivsI4AaWTCzHG06/TMjsf1cYe9Cb97UCEhjz7HvnPk2p/tw==
+  dependencies:
+    anymatch "~3.1.1"
+    braces "~3.0.2"
+    glob-parent "~5.1.0"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.5.0"
+  optionalDependencies:
+    fsevents "~2.3.1"
+
+chownr@^1.1.1:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
+  integrity sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==
+
+chownr@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/chownr/-/chownr-2.0.0.tgz#15bfbe53d2eab4cf70f18a8cd68ebe5b3cb1dece"
+  integrity sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==
+
+cliui@^3.0.3:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
+  integrity sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+    wrap-ansi "^2.0.0"
+
+cliui@^7.0.2:
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-7.0.4.tgz#a0265ee655476fc807aea9df3df8df7783808b4f"
+  integrity sha512-OcRE68cOsVMXp1Yvonl/fzkQOyjLSu/8bhPDfQt0e0/Eb283TKP20Fs2MqoPsr9SwA595rRCA+QMzYc9nBP+JQ==
+  dependencies:
+    string-width "^4.2.0"
+    strip-ansi "^6.0.0"
+    wrap-ansi "^7.0.0"
+
+cmake-js@~5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/cmake-js/-/cmake-js-5.2.0.tgz#6d72014269a5d23a754a6d170cde9ed2d75eb411"
+  integrity sha512-/HLhzoBEOLKGdE1FLwH5ggzRt67AWTb4IErg4rm+bTC+R0DKUobojDyp17dSswDVPosdoPmHXjKxbJiyBZfQeg==
+  dependencies:
+    bluebird "^3"
+    debug "^4"
+    fs-extra "^5.0.0"
+    is-iojs "^1.0.1"
+    lodash "^4"
+    memory-stream "0"
+    npmlog "^1.2.0"
+    rc "^1.2.7"
+    request "^2.54.0"
+    semver "^5.0.3"
+    splitargs "0"
+    tar "^4"
+    traceur "0.0.x"
+    unzipper "^0.8.13"
+    url-join "0"
+    which "^1.0.9"
+    yargs "^3.6.0"
+
+code-point-at@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
+  integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
+
+color-convert@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
+  integrity sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==
+  dependencies:
+    color-name "~1.1.4"
+
+color-name@~1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
+  integrity sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
+
+colors@~0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-0.6.2.tgz#2423fe6678ac0c5dae8852e5d0e5be08c997abcc"
+  integrity sha1-JCP+ZnisDF2uiFLl0OW+CMmXq8w=
+
+combined-stream@^1.0.6, combined-stream@~1.0.6:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
+  integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
+  dependencies:
+    delayed-stream "~1.0.0"
+
+commander@2.9.x, commander@^2.9.0:
+  version "2.9.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
+  integrity sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=
+  dependencies:
+    graceful-readlink ">= 1.0.0"
+
+commander@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.2.0.tgz#175ad4b9317f3ff615f201c1e57224f55a3e91df"
+  integrity sha1-F1rUuTF/P/YV8gHB5XIk9Vo+kd8=
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+console-control-strings@^1.0.0, console-control-strings@~1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
+  integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
+
+convert-source-map@^1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.1.tgz#b8278097b9bc229365de5c62cf5fcaed8b5599e5"
+  integrity sha1-uCeAl7m8IpNl3lxiz1/K7YtVmeU=
+
+core-js@^2.4.0:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.4.1.tgz#4de911e667b0eae9124e34254b53aea6fc618d3e"
+  integrity sha1-TekR5mew6ukSTjQlS1OupvxhjT4=
+
+core-js@^2.5.0:
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.7.tgz#f972608ff0cead68b841a16a932d0b183791814e"
+  integrity sha512-RszJCAxg/PP6uzXVXL6BsxSXx/B05oJAQ2vkJRjyjrEcNVycaqOmNb5OTxZPE3xa5gwZduqza6L9JOCenh/Ecw==
+
+core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+d@1, d@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/d/-/d-1.0.1.tgz#8698095372d58dbee346ffd0c7093f99f8f9eb5a"
+  integrity sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==
+  dependencies:
+    es5-ext "^0.10.50"
+    type "^1.0.1"
+
+dashdash@^1.12.0:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
+  integrity sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=
+  dependencies:
+    assert-plus "^1.0.0"
+
+debug@4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
+  integrity sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==
+  dependencies:
+    ms "2.1.2"
+
+debug@^2.2.0, debug@^2.6.8, debug@^2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+debug@^4:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.2.0.tgz#7f150f93920e94c58f5574c2fd01a3110effe7f1"
+  integrity sha512-IX2ncY78vDTjZMFUdmsvIRFY2Cf4FnD0wRs+nQwJU8Lu99/tPFdb0VybiiMTPe3I6rQmwsqQqRBvxU+bZ/I8sg==
+  dependencies:
+    ms "2.1.2"
+
+decamelize@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
+
+decamelize@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-4.0.0.tgz#aa472d7bf660eb15f3494efd531cab7f2a709837"
+  integrity sha512-9iE1PgSik9HeIIw2JO94IidnE3eBoQrFJ3w7sFuzSX4DpmZ3v5sZpUiV5Swcf6mQEF+Y0ru8Neo+p+nyh2J+hQ==
+
+decompress-response@^4.2.0:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/decompress-response/-/decompress-response-4.2.1.tgz#414023cc7a302da25ce2ec82d0d5238ccafd8986"
+  integrity sha512-jOSne2qbyE+/r8G1VU+G/82LBs2Fs4LAsTiLSHOCOMZQl2OKZ6i8i4IyHemTe+/yIXOtTcRQMzPcgyhoFlqPkw==
+  dependencies:
+    mimic-response "^2.0.0"
+
+deep-eql@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
+  integrity sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==
+  dependencies:
+    type-detect "^4.0.0"
+
+deep-extend@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
+  integrity sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
+
+delayed-stream@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
+  integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
+
+delegates@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
+  integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
+
+detect-indent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
+  integrity sha1-920GQ1LN9Docts5hnE7jqUdd4gg=
+  dependencies:
+    repeating "^2.0.0"
+
+detect-libc@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
+  integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
+
+diff@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-5.0.0.tgz#7ed6ad76d859d030787ec35855f5b1daf31d852b"
+  integrity sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w==
+
+duplexer2@~0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/duplexer2/-/duplexer2-0.0.2.tgz#c614dcf67e2fb14995a91711e5a617e8a60a31db"
+  integrity sha1-xhTc9n4vsUmVqRcR5aYX6KYKMds=
+  dependencies:
+    readable-stream "~1.1.9"
+
+duplexer2@~0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/duplexer2/-/duplexer2-0.1.4.tgz#8b12dab878c0d69e3e7891051662a32fc6bddcc1"
+  integrity sha1-ixLauHjA1p4+eJEFFmKjL8a93ME=
+  dependencies:
+    readable-stream "^2.0.2"
+
+each-series-async@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/each-series-async/-/each-series-async-1.0.1.tgz#7e3f8dfa5af934663960e5a17561362909b34328"
+  integrity sha512-G4zip/Ewpwr6JQxW7+2RNgkPd09h/UNec5UlvA/xKwl4qf5blyBNK6a/zjQc3MojgsxaOb93B9v3T92QU6IMVg==
+
+ecc-jsbn@~0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
+  integrity sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=
+  dependencies:
+    jsbn "~0.1.0"
+
+emoji-regex@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
+  integrity sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==
+
+end-of-stream@^1.1.0, end-of-stream@^1.4.1:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.4.tgz#5ae64a5f45057baf3626ec14da0ca5e4b2431eb0"
+  integrity sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==
+  dependencies:
+    once "^1.4.0"
+
+env-paths@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/env-paths/-/env-paths-2.2.0.tgz#cdca557dc009152917d6166e2febe1f039685e43"
+  integrity sha512-6u0VYSCo/OW6IoD5WCLLy9JUGARbamfSavcNXry/eu8aHVFei6CD3Sw+VGX5alea1i9pgPHW0mbu6Xj0uBh7gA==
+
+es5-ext@^0.10.35, es5-ext@^0.10.50:
+  version "0.10.53"
+  resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.53.tgz#93c5a3acfdbef275220ad72644ad02ee18368de1"
+  integrity sha512-Xs2Stw6NiNHWypzRTY1MtaG/uJlwCk8kH81920ma8mvN8Xq1gsfhZvpkImLQArw8AHnv8MT2I45J3c0R8slE+Q==
+  dependencies:
+    es6-iterator "~2.0.3"
+    es6-symbol "~3.1.3"
+    next-tick "~1.0.0"
+
+es6-iterator@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-2.0.3.tgz#a7de889141a05a94b0854403b2d0a0fbfa98f3b7"
+  integrity sha1-p96IkUGgWpSwhUQDstCg+/qY87c=
+  dependencies:
+    d "1"
+    es5-ext "^0.10.35"
+    es6-symbol "^3.1.1"
+
+es6-symbol@^3.0.2, es6-symbol@^3.1.1, es6-symbol@~3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.3.tgz#bad5d3c1bcdac28269f4cb331e431c78ac705d18"
+  integrity sha512-NJ6Yn3FuDinBaBRWl/q5X/s4koRHBrgKAu+yGI6JCBeiu3qrcbJhwT2GeR/EXVfylRk8dpQVJoLEFhK+Mu31NA==
+  dependencies:
+    d "^1.0.1"
+    ext "^1.1.2"
+
+escalade@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
+  integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
+
+escape-string-regexp@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz#14ba83a5d373e3d311e5afca29cf5bfad965bf34"
+  integrity sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==
+
+escape-string-regexp@^1.0.2:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+esutils@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
+  integrity sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=
+
+execspawn@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/execspawn/-/execspawn-1.0.1.tgz#8286f9dde7cecde7905fbdc04e24f368f23f8da6"
+  integrity sha1-gob53efOzeeQX73ATiTzaPI/jaY=
+  dependencies:
+    util-extend "^1.0.1"
+
+expand-template@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/expand-template/-/expand-template-2.0.3.tgz#6e14b3fcee0f3a6340ecb57d2e8918692052a47c"
+  integrity sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==
+
+ext@^1.1.2:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/ext/-/ext-1.4.0.tgz#89ae7a07158f79d35517882904324077e4379244"
+  integrity sha512-Key5NIsUxdqKg3vIsdw9dSuXpPCQ297y6wBjL30edxwPgt2E44WcWBZey/ZvUc6sERLTxKdyCu4gZFmUbk1Q7A==
+  dependencies:
+    type "^2.0.0"
+
+extend@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
+  integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
+
+extsprintf@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.0.2.tgz#e1080e0658e300b06294990cc70e1502235fd550"
+  integrity sha1-4QgOBljjALBilJkMxw4VAiNf1VA=
+
+fast-deep-equal@^3.1.1:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
+  integrity sha1-1RQsDK7msRifh9OnYREGT4bIu/I=
+
+fill-range@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
+  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
+  dependencies:
+    to-regex-range "^5.0.1"
+
+find-up@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-5.0.0.tgz#4c92819ecb7083561e4f4a240a86be5198f536fc"
+  integrity sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng==
+  dependencies:
+    locate-path "^6.0.0"
+    path-exists "^4.0.0"
+
+flat@^5.0.2:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/flat/-/flat-5.0.2.tgz#8ca6fe332069ffa9d324c327198c598259ceb241"
+  integrity sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==
+
+forever-agent@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
+  integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
+
+form-data@~2.3.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
+  integrity sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.6"
+    mime-types "^2.1.12"
+
+fs-constants@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
+  integrity sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==
+
+fs-extra@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-5.0.0.tgz#414d0110cdd06705734d055652c5411260c31abd"
+  integrity sha512-66Pm4RYbjzdyeuqudYqhFiNBbCIuI9kgRqLPSHIlXHidW8NIQtVdkM1yeZ4lXwuhbTETv3EUGMNHAAw6hiundQ==
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
+fs-minipass@^1.2.5:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.7.tgz#ccff8570841e7fe4265693da88936c55aed7f7c7"
+  integrity sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==
+  dependencies:
+    minipass "^2.6.0"
+
+fs-minipass@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-2.1.0.tgz#7f5036fdbf12c63c169190cbe4199c852271f9fb"
+  integrity sha512-V/JgOLFCS+R6Vcq0slCuaeWEdNC3ouDlJMNIsacH2VtALiu9mV4LPrHc5cDl8k5aw6J8jwgWWpiTo5RYhmIzvg==
+  dependencies:
+    minipass "^3.0.0"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+fsevents@~2.3.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.3.2.tgz#8a526f78b8fdf4623b709e0b975c52c24c02fd1a"
+  integrity sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==
+
+fstream@^1.0.0, fstream@^1.0.12, fstream@~1.0.10:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/fstream/-/fstream-1.0.12.tgz#4e8ba8ee2d48be4f7d0de505455548eae5932045"
+  integrity sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==
+  dependencies:
+    graceful-fs "^4.1.2"
+    inherits "~2.0.0"
+    mkdirp ">=0.5 0"
+    rimraf "2"
+
+gauge@~1.2.0, gauge@~1.2.5:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/gauge/-/gauge-1.2.7.tgz#e9cec5483d3d4ee0ef44b60a7d99e4935e136d93"
+  integrity sha1-6c7FSD09TuDvRLYKfZnkk14TbZM=
+  dependencies:
+    ansi "^0.3.0"
+    has-unicode "^2.0.0"
+    lodash.pad "^4.1.0"
+    lodash.padend "^4.1.0"
+    lodash.padstart "^4.1.0"
+
+gauge@~2.7.3:
+  version "2.7.4"
+  resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
+  integrity sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=
+  dependencies:
+    aproba "^1.0.3"
+    console-control-strings "^1.0.0"
+    has-unicode "^2.0.0"
+    object-assign "^4.1.0"
+    signal-exit "^3.0.0"
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+    wide-align "^1.1.0"
+
+get-caller-file@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
+get-func-name@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
+  integrity sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=
+
+getpass@^0.1.1:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
+  integrity sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=
+  dependencies:
+    assert-plus "^1.0.0"
+
+ghreleases@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/ghreleases/-/ghreleases-3.0.2.tgz#1bdb6d31ec03a24a0d80f58f5e9a84a4db725818"
+  integrity sha512-QiR9mIYvRG7hd8JuQYoxeBNOelVuTp2DpdiByRywbCDBSJufK9Vq7VuhD8B+5uviMxZx2AEkCzye61Us9gYgnw==
+  dependencies:
+    after "~0.8.1"
+    ghrepos "~2.1.0"
+    ghutils "~3.2.0"
+    lodash.uniq "^4.5.0"
+    simple-mime "~0.1.0"
+    url-template "~2.0.6"
+
+ghrepos@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/ghrepos/-/ghrepos-2.1.0.tgz#abaf558b690b722c70c7ad45076f6f9be8e495e1"
+  integrity sha512-6GM0ohSDTAv7xD6GsKfxJiV/CajoofRyUwu0E8l29d1o6lFAUxmmyMP/FH33afA20ZrXzxxcTtN6TsYvudMoAg==
+  dependencies:
+    ghutils "~3.2.0"
+
+ghutils@~3.2.0:
+  version "3.2.6"
+  resolved "https://registry.yarnpkg.com/ghutils/-/ghutils-3.2.6.tgz#d43986e267da02787464d97a6489659e4609bb1f"
+  integrity sha512-WpYHgLQkqU7Cv147wKUEThyj6qKHCdnAG2CL9RRsRQImVdLGdVqblJ3JUnj3ToQwgm1ALPS+FXgR0448AgGPUg==
+  dependencies:
+    jsonist "~2.1.0"
+    xtend "~4.0.1"
+
+github-from-package@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/github-from-package/-/github-from-package-0.0.0.tgz#97fb5d96bfde8973313f20e8288ef9a167fa64ce"
+  integrity sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4=
+
+glob-parent@~5.1.0:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.2.tgz#869832c58034fe68a4093c17dc15e8340d8401c4"
+  integrity sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==
+  dependencies:
+    is-glob "^4.0.1"
+
+"glob@3 || 4 || 5 || 6 || 7", glob@7.1.6, glob@^7.0.3, glob@^7.1.3, glob@^7.1.4, glob@^7.1.6:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  integrity sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@5.0.x:
+  version "5.0.15"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-5.0.15.tgz#1bc936b9e02f4a603fcc222ecf7633d30b8b93b1"
+  integrity sha1-G8k2ueAvSmA/zCIuz3Yz0wuLk7E=
+  dependencies:
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "2 || 3"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+globals@^9.18.0:
+  version "9.18.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
+  integrity sha512-S0nG3CLEQiY/ILxqtztTWH/3iRRdyBLw6KMDxnKMchrtbj2OFmehVh0WUCfW3DUrIgx/qFrJPICrq4Z4sTR9UQ==
+
+graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.2.2, graceful-fs@^4.2.3:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.3.tgz#4a12ff1b60376ef09862c2093edd908328be8423"
+  integrity sha512-a30VEBm4PEdx1dRB7MFK7BejejvCvBronbLjht+sHuGYj8PHs7M/5Z+rt5lw551vZ7yfTCj4Vuyy3mSJytDWRQ==
+
+"graceful-readlink@>= 1.0.0":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
+  integrity sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=
+
+growl@1.10.5:
+  version "1.10.5"
+  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
+  integrity sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==
+
+har-schema@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
+  integrity sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=
+
+har-validator@~5.1.3:
+  version "5.1.5"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.5.tgz#1f0803b9f8cb20c0fa13822df1ecddb36bde1efd"
+  integrity sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==
+  dependencies:
+    ajv "^6.12.3"
+    har-schema "^2.0.0"
+
+has-ansi@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
+  integrity sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=
+  dependencies:
+    ansi-regex "^2.0.0"
+
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+  integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
+
+has-unicode@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
+  integrity sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=
+
+he@1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
+  integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
+
+home-or-tmp@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
+  integrity sha1-42w/LSyufXRqhX440Y1fMqeILbg=
+  dependencies:
+    os-homedir "^1.0.0"
+    os-tmpdir "^1.0.1"
+
+http-signature@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
+  integrity sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=
+  dependencies:
+    assert-plus "^1.0.0"
+    jsprim "^1.2.2"
+    sshpk "^1.7.0"
+
+hyperquest@~2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/hyperquest/-/hyperquest-2.1.3.tgz#523127d7a343181b40bf324e231d2576edf52633"
+  integrity sha512-fUuDOrB47PqNK/BAMOS13v41UoaqIxqSLHX6CAbOD7OfT+/GCWO1/vPLfTNutOeXrv1ikuaZ3yux+33Z9vh+rw==
+  dependencies:
+    buffer-from "^0.1.1"
+    duplexer2 "~0.0.2"
+    through2 "~0.6.3"
+
+ieee754@^1.1.13:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.2.1.tgz#8eb7a10a63fff25d15a57b001586d177d1b0d352"
+  integrity sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.1, inherits@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
+
+inherits@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+ini@~1.3.0:
+  version "1.3.7"
+  resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.7.tgz#a09363e1911972ea16d7a8851005d84cf09a9a84"
+  integrity sha512-iKpRpXP+CrP2jyrxvg1kMUpXDyRUFDWurxbnVT1vQPx+Wz9uCYsMIqYuSBLV+PAaZG/d7kRLKRFc9oDMsH+mFQ==
+
+invariant@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.2.tgz#9e1f56ac0acdb6bf303306f338be3b204ae60360"
+  integrity sha1-nh9WrArNtr8wMwbzOL47IErmA2A=
+  dependencies:
+    loose-envify "^1.0.0"
+
+invert-kv@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
+  integrity sha1-EEqOSqym09jNFXqO+L+rLXo//bY=
+
+is-binary-path@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-2.1.0.tgz#ea1f7f3b80f064236e83470f86c09c254fb45b09"
+  integrity sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==
+  dependencies:
+    binary-extensions "^2.0.0"
+
+is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+  integrity sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=
+
+is-finite@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
+  integrity sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=
+  dependencies:
+    number-is-nan "^1.0.0"
+
+is-fullwidth-code-point@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
+  integrity sha1-754xOG8DGn8NZDr4L95QxFfvAMs=
+  dependencies:
+    number-is-nan "^1.0.0"
+
+is-fullwidth-code-point@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz#f116f8064fe90b3f7844a38997c0b75051269f1d"
+  integrity sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==
+
+is-glob@^4.0.1, is-glob@~4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
+  integrity sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==
+  dependencies:
+    is-extglob "^2.1.1"
+
+is-iojs@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-iojs/-/is-iojs-1.1.0.tgz#4c11033b5d5d94d6eab3775dedc9be7d008325f1"
+  integrity sha1-TBEDO11dlNbqs3dd7cm+fQCDJfE=
+
+is-number@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
+  integrity sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==
+
+is-plain-obj@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-2.1.0.tgz#45e42e37fccf1f40da8e5f76ee21515840c09287"
+  integrity sha512-YWnfyRwxL/+SsrWYfOpUtz5b3YD+nyfkHvjbcanzk8zgyO4ASD67uVMRt8k5bM4lLMDnXfriRhOpemw+NfT1eA==
+
+is-typedarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
+  integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
+
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
+
+isarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+isexe@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
+  integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
+
+isstream@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
+  integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
+
+js-tokens@^3.0.0, js-tokens@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
+  integrity sha1-mGbfOVECEw449/mWvOtlRDIJwls=
+
+js-yaml@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.0.0.tgz#f426bc0ff4b4051926cd588c71113183409a121f"
+  integrity sha512-pqon0s+4ScYUvX30wxQi3PogGFAlUyH0awepWvwkj4jD4v+ova3RiYw8bmA6x2rDrEaj8i/oWKoRxpVNW+Re8Q==
+  dependencies:
+    argparse "^2.0.1"
+
+jsbn@~0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
+  integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
+
+jsesc@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
+  integrity sha1-RsP+yMGJKxKwgz25vHYiF226s0s=
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
+  integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
+
+json-stringify-safe@~5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
+  integrity sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=
+
+json5@^0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
+  integrity sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=
+
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  integrity sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
+jsonist@~2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/jsonist/-/jsonist-2.1.2.tgz#c1377311e8fc857abe7aa3df197116a911f95324"
+  integrity sha512-8yqmWJAC2VaYoSKQAbsfgCpGY5o/1etWzx6ZxaZrC4iGaHrHUZEo+a2MyF8w+2uTavTlHdLWaZUoR19UfBstxQ==
+  dependencies:
+    bl "~3.0.0"
+    hyperquest "~2.1.3"
+    json-stringify-safe "~5.0.1"
+    xtend "~4.0.1"
+
+jsprim@^1.2.2:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.0.tgz#a3b87e40298d8c380552d8cc7628a0bb95a22918"
+  integrity sha1-o7h+QCmNjDgFUtjMdiigu5WiKRg=
+  dependencies:
+    assert-plus "1.0.0"
+    extsprintf "1.0.2"
+    json-schema "0.2.3"
+    verror "1.3.6"
+
+lcid@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-1.0.0.tgz#308accafa0bc483a3867b4b6f2b9506251d1b835"
+  integrity sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=
+  dependencies:
+    invert-kv "^1.0.0"
+
+listenercount@~1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/listenercount/-/listenercount-1.0.1.tgz#84c8a72ab59c4725321480c975e6508342e70937"
+  integrity sha1-hMinKrWcRyUyFIDJdeZQg0LnCTc=
+
+locate-path@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-6.0.0.tgz#55321eb309febbc59c4801d931a72452a681d286"
+  integrity sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==
+  dependencies:
+    p-locate "^5.0.0"
+
+lodash.pad@^4.1.0:
+  version "4.5.1"
+  resolved "https://registry.yarnpkg.com/lodash.pad/-/lodash.pad-4.5.1.tgz#4330949a833a7c8da22cc20f6a26c4d59debba70"
+  integrity sha1-QzCUmoM6fI2iLMIPaibE1Z3runA=
+
+lodash.padend@^4.1.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.padend/-/lodash.padend-4.6.1.tgz#53ccba047d06e158d311f45da625f4e49e6f166e"
+  integrity sha1-U8y6BH0G4VjTEfRdpiX05J5vFm4=
+
+lodash.padstart@^4.1.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.padstart/-/lodash.padstart-4.6.1.tgz#d2e3eebff0d9d39ad50f5cbd1b52a7bce6bb611b"
+  integrity sha1-0uPuv/DZ05rVD1y9G1KnvOa7YRs=
+
+lodash.uniq@^4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
+  integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
+
+lodash@^4, lodash@^4.17.4, lodash@^4.2.0:
+  version "4.17.19"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.19.tgz#e48ddedbe30b3321783c5b4301fbd353bc1e4a4b"
+  integrity sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==
+
+log-symbols@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-4.0.0.tgz#69b3cc46d20f448eccdb75ea1fa733d9e821c920"
+  integrity sha512-FN8JBzLx6CzeMrB0tg6pqlGU1wCrXW+ZXGH481kfsBqer0hToTIiHdjH4Mq8xJUbvATujKCvaREGWpGUionraA==
+  dependencies:
+    chalk "^4.0.0"
+
+loose-envify@^1.0.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
+  integrity sha1-0aitM/qc4OcT1l/dCsi3SNR4yEg=
+  dependencies:
+    js-tokens "^3.0.0"
+
+memory-stream@0:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/memory-stream/-/memory-stream-0.0.3.tgz#ebe8dd1c3b8bc38c0e7941e9ddd5aebe6b4de83f"
+  integrity sha1-6+jdHDuLw4wOeUHp3dWuvmtN6D8=
+  dependencies:
+    readable-stream "~1.0.26-2"
+
+mime-db@1.44.0:
+  version "1.44.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.44.0.tgz#fa11c5eb0aca1334b4233cb4d52f10c5a6272f92"
+  integrity sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==
+
+mime-types@^2.1.12, mime-types@~2.1.19:
+  version "2.1.27"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.27.tgz#47949f98e279ea53119f5722e0f34e529bec009f"
+  integrity sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==
+  dependencies:
+    mime-db "1.44.0"
+
+mimic-response@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-2.1.0.tgz#d13763d35f613d09ec37ebb30bac0469c0ee8f43"
+  integrity sha512-wXqjST+SLt7R009ySCglWBCFpjUygmCIfD790/kVbiGmUgfYGuB14PiTd5DwVxSV4NcYHjzMkoj5LjQZwTQLEA==
+
+"minimatch@2 || 3", minimatch@3, minimatch@3.0.4, minimatch@^3.0.2, minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.1.2, minimist@^1.2.0, minimist@^1.2.3, minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
+minipass@^2.6.0, minipass@^2.8.6, minipass@^2.9.0:
+  version "2.9.0"
+  resolved "https://registry.yarnpkg.com/minipass/-/minipass-2.9.0.tgz#e713762e7d3e32fed803115cf93e04bca9fcc9a6"
+  integrity sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==
+  dependencies:
+    safe-buffer "^5.1.2"
+    yallist "^3.0.0"
+
+minipass@^3.0.0:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/minipass/-/minipass-3.1.3.tgz#7d42ff1f39635482e15f9cdb53184deebd5815fd"
+  integrity sha512-Mgd2GdMVzY+x3IJ+oHnVM+KG3lA5c8tnabyJKmHSaG2kAGpudxuOf8ToDkhumF7UzME7DecbQE9uOZhNm7PuJg==
+  dependencies:
+    yallist "^4.0.0"
+
+minizlib@^1.2.1:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-1.3.3.tgz#2290de96818a34c29551c8a8d301216bd65a861d"
+  integrity sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==
+  dependencies:
+    minipass "^2.9.0"
+
+minizlib@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-2.1.2.tgz#e90d3466ba209b932451508a11ce3d3632145931"
+  integrity sha512-bAxsR8BVfj60DWXHE3u30oHzfl4G7khkSuPW+qvpd7jFRHm7dLxOjUk1EHACJ/hxLY8phGJ0YhYHZo7jil7Qdg==
+  dependencies:
+    minipass "^3.0.0"
+    yallist "^4.0.0"
+
+mkdirp-classic@^0.5.2, mkdirp-classic@^0.5.3:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/mkdirp-classic/-/mkdirp-classic-0.5.3.tgz#fa10c9115cc6d8865be221ba47ee9bed78601113"
+  integrity sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A==
+
+"mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
+  version "0.5.5"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.5.tgz#d91cefd62d1436ca0f41620e251288d420099def"
+  integrity sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==
+  dependencies:
+    minimist "^1.2.5"
+
+mkdirp@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
+  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
+
+mocha@^8.0.1:
+  version "8.3.2"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.3.2.tgz#53406f195fa86fbdebe71f8b1c6fb23221d69fcc"
+  integrity sha512-UdmISwr/5w+uXLPKspgoV7/RXZwKRTiTjJ2/AC5ZiEztIoOYdfKb19+9jNmEInzx5pBsCyJQzarAxqIGBNYJhg==
+  dependencies:
+    "@ungap/promise-all-settled" "1.1.2"
+    ansi-colors "4.1.1"
+    browser-stdout "1.3.1"
+    chokidar "3.5.1"
+    debug "4.3.1"
+    diff "5.0.0"
+    escape-string-regexp "4.0.0"
+    find-up "5.0.0"
+    glob "7.1.6"
+    growl "1.10.5"
+    he "1.2.0"
+    js-yaml "4.0.0"
+    log-symbols "4.0.0"
+    minimatch "3.0.4"
+    ms "2.1.3"
+    nanoid "3.1.20"
+    serialize-javascript "5.0.1"
+    strip-json-comments "3.1.1"
+    supports-color "8.1.1"
+    which "2.0.2"
+    wide-align "1.1.3"
+    workerpool "6.1.0"
+    yargs "16.2.0"
+    yargs-parser "20.2.4"
+    yargs-unparser "2.0.0"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
+
+ms@2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
+  integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
+
+nanoid@3.1.20:
+  version "3.1.20"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.20.tgz#badc263c6b1dcf14b71efaa85f6ab4c1d6cfc788"
+  integrity sha512-a1cQNyczgKbLX9jwbS/+d7W8fX/RfgYR7lVWwWOGIPNgK2m0MWvrGF6/m4kk6U3QcFMnZf3RIhL0v2Jgh/0Uxw==
+
+napi-build-utils@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/napi-build-utils/-/napi-build-utils-1.0.2.tgz#b1fddc0b2c46e380a0b7a76f984dd47c41a13806"
+  integrity sha512-ONmRUqK7zj7DWX0D9ADe03wbwOBZxNAfF20PlGfCWQcD3+/MakShIHrMqx9YwPTfxDdF1zLeL+RGZiR9kGMLdg==
+
+next-tick@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
+  integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
+
+node-abi@^2.2.0, node-abi@^2.21.0:
+  version "2.21.0"
+  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.21.0.tgz#c2dc9ebad6f4f53d6ea9b531e7b8faad81041d48"
+  integrity sha512-smhrivuPqEM3H5LmnY3KU6HfYv0u4QklgAxfFyRNujKUzbUcYZ+Jc2EhukB9SRcD2VpqhxM7n/MIcp1Ua1/JMg==
+  dependencies:
+    semver "^5.4.1"
+
+node-addon-api@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/node-addon-api/-/node-addon-api-3.1.0.tgz#98b21931557466c6729e51cb77cd39c965f42239"
+  integrity sha512-flmrDNB06LIl5lywUz7YlNGZH/5p0M7W28k8hzd9Lshtdh1wshD2Y+U4h9LD6KObOy1f+fEVdgprPrEymjM5uw==
+
+node-cpplint@~0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/node-cpplint/-/node-cpplint-0.4.0.tgz#35827fe7b95ccceff0cd7f46ede4cba44b8ef88c"
+  integrity sha1-NYJ/57lczO/wzX9G7eTLpEuO+Iw=
+  dependencies:
+    colors "~0.6.2"
+    commander "~2.2.0"
+
+node-gyp@^6.0.1:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-6.1.0.tgz#64e31c61a4695ad304c1d5b82cf6b7c79cc79f3f"
+  integrity sha512-h4A2zDlOujeeaaTx06r4Vy+8MZ1679lU+wbCKDS4ZtvY2A37DESo37oejIw0mtmR3+rvNwts5B6Kpt1KrNYdNw==
+  dependencies:
+    env-paths "^2.2.0"
+    glob "^7.1.4"
+    graceful-fs "^4.2.2"
+    mkdirp "^0.5.1"
+    nopt "^4.0.1"
+    npmlog "^4.1.2"
+    request "^2.88.0"
+    rimraf "^2.6.3"
+    semver "^5.7.1"
+    tar "^4.4.12"
+    which "^1.3.1"
+
+node-gyp@^7.0.0:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-7.1.2.tgz#21a810aebb187120251c3bcec979af1587b188ae"
+  integrity sha512-CbpcIo7C3eMu3dL1c3d0xw449fHIGALIJsRP4DDPHpyiW8vcriNY7ubh9TE4zEKfSxscY7PjeFnshE7h75ynjQ==
+  dependencies:
+    env-paths "^2.2.0"
+    glob "^7.1.4"
+    graceful-fs "^4.2.3"
+    nopt "^5.0.0"
+    npmlog "^4.1.2"
+    request "^2.88.2"
+    rimraf "^3.0.2"
+    semver "^7.3.2"
+    tar "^6.0.2"
+    which "^2.0.2"
+
+node-ninja@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/node-ninja/-/node-ninja-1.0.2.tgz#20a09e57b92e2df591993d4bf098ac3e727062b6"
+  integrity sha1-IKCeV7kuLfWRmT1L8JisPnJwYrY=
+  dependencies:
+    fstream "^1.0.0"
+    glob "3 || 4 || 5 || 6 || 7"
+    graceful-fs "^4.1.2"
+    minimatch "3"
+    mkdirp "^0.5.0"
+    nopt "2 || 3"
+    npmlog "0 || 1 || 2"
+    osenv "0"
+    path-array "^1.0.0"
+    request "2"
+    rimraf "2"
+    semver "2.x || 3.x || 4 || 5"
+    tar "^2.0.0"
+    which "1"
+
+noop-logger@^0.1.0, noop-logger@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/noop-logger/-/noop-logger-0.1.1.tgz#94a2b1633c4f1317553007d8966fd0e841b6a4c2"
+  integrity sha1-lKKxYzxPExdVMAfYlm/Q6EG2pMI=
+
+"nopt@2 || 3":
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
+  integrity sha1-xkZdvwirzU2zWTF/eaxopkayj/k=
+  dependencies:
+    abbrev "1"
+
+nopt@^4.0.1:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-4.0.3.tgz#a375cad9d02fd921278d954c2254d5aa57e15e48"
+  integrity sha512-CvaGwVMztSMJLOeXPrez7fyfObdZqNUK1cPAEzLHrTybIua9pMdmmPR5YwtfNftIOMv3DPUhFaxsZMNTQO20Kg==
+  dependencies:
+    abbrev "1"
+    osenv "^0.1.4"
+
+nopt@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-5.0.0.tgz#530942bb58a512fccafe53fe210f13a25355dc88"
+  integrity sha512-Tbj67rffqceeLpcRXrT7vKAN8CwfPeIBgM7E6iBkmKLV7bEMwpGgYLGv0jACUsECaa/vuxP0IjEont6umdMgtQ==
+  dependencies:
+    abbrev "1"
+
+normalize-path@^3.0.0, normalize-path@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
+  integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
+
+npm-path@^2.0.2:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/npm-path/-/npm-path-2.0.4.tgz#c641347a5ff9d6a09e4d9bce5580c4f505278e64"
+  integrity sha512-IFsj0R9C7ZdR5cP+ET342q77uSRdtWOlWpih5eC+lu29tIDbNEgDbzgVJ5UFvYHWhxDZ5TFkJafFioO0pPQjCw==
+  dependencies:
+    which "^1.2.10"
+
+npm-which@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/npm-which/-/npm-which-3.0.1.tgz#9225f26ec3a285c209cae67c3b11a6b4ab7140aa"
+  integrity sha1-kiXybsOihcIJyuZ8OxGmtKtxQKo=
+  dependencies:
+    commander "^2.9.0"
+    npm-path "^2.0.2"
+    which "^1.2.10"
+
+"npmlog@0 || 1 || 2":
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-2.0.4.tgz#98b52530f2514ca90d09ec5b22c8846722375692"
+  integrity sha1-mLUlMPJRTKkNCexbIsiEZyI3VpI=
+  dependencies:
+    ansi "~0.3.1"
+    are-we-there-yet "~1.1.2"
+    gauge "~1.2.5"
+
+"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.1, npmlog@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
+  integrity sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==
+  dependencies:
+    are-we-there-yet "~1.1.2"
+    console-control-strings "~1.1.0"
+    gauge "~2.7.3"
+    set-blocking "~2.0.0"
+
+npmlog@^1.2.0:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-1.2.1.tgz#28e7be619609b53f7ad1dd300a10d64d716268b6"
+  integrity sha1-KOe+YZYJtT960d0wChDWTXFiaLY=
+  dependencies:
+    ansi "~0.3.0"
+    are-we-there-yet "~1.0.0"
+    gauge "~1.2.0"
+
+number-is-nan@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
+  integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
+
+nw-gyp@^3.6.3:
+  version "3.6.5"
+  resolved "https://registry.yarnpkg.com/nw-gyp/-/nw-gyp-3.6.5.tgz#ccce42182229e44e7689da70675b4b8dd0ab0ab3"
+  integrity sha512-vYrOIYJEKpq9CfaHuiqEjV1rBYgr6uaUrPhPRiznb91LujkAUqGhQ5QqDC1bLdd+zo9jf2H0Zkl2M5zQB7+CuQ==
+  dependencies:
+    fstream "^1.0.0"
+    glob "^7.0.3"
+    graceful-fs "^4.1.2"
+    minimatch "^3.0.2"
+    mkdirp "^0.5.0"
+    nopt "2 || 3"
+    npmlog "0 || 1 || 2 || 3 || 4"
+    osenv "0"
+    request "2"
+    rimraf "2"
+    semver "~5.3.0"
+    tar "^2.0.0"
+    which "1"
+
+oauth-sign@~0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
+  integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
+
+object-assign@^4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
+
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+os-homedir@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
+  integrity sha1-/7xJiDNuDoM94MFox+8VISGqf7M=
+
+os-locale@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-1.4.0.tgz#20f9f17ae29ed345e8bde583b13d2009803c14d9"
+  integrity sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=
+  dependencies:
+    lcid "^1.0.0"
+
+os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
+  integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
+
+osenv@0, osenv@^0.1.4:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.5.tgz#85cdfafaeb28e8677f416e287592b5f3f49ea410"
+  integrity sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==
+  dependencies:
+    os-homedir "^1.0.0"
+    os-tmpdir "^1.0.0"
+
+p-limit@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-3.1.0.tgz#e1daccbe78d0d1388ca18c64fea38e3e57e3706b"
+  integrity sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ==
+  dependencies:
+    yocto-queue "^0.1.0"
+
+p-locate@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-5.0.0.tgz#83c8315c6785005e3bd021839411c9e110e6d834"
+  integrity sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw==
+  dependencies:
+    p-limit "^3.0.2"
+
+path-array@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-array/-/path-array-1.0.1.tgz#7e2f0f35f07a2015122b868b7eac0eb2c4fec271"
+  integrity sha1-fi8PNfB6IBUSK4aLfqwOssT+wnE=
+  dependencies:
+    array-index "^1.0.0"
+
+path-exists@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
+  integrity sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==
+
+path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+pathval@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.1.tgz#8534e77a77ce7ac5a2512ea21e0fdb8fcf6c3d8d"
+  integrity sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==
+
+performance-now@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
+  integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
+
+picomatch@^2.0.4, picomatch@^2.2.1:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
+  integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
+
+prebuild-install@^6.0.0:
+  version "6.1.1"
+  resolved "https://registry.yarnpkg.com/prebuild-install/-/prebuild-install-6.1.1.tgz#6754fa6c0d55eced7f9e14408ff9e4cba6f097b4"
+  integrity sha512-M+cKwofFlHa5VpTWub7GLg5RLcunYIcLqtY5pKcls/u7xaAb8FrXZ520qY8rkpYy5xw90tYCyMO0MP5ggzR3Sw==
+  dependencies:
+    detect-libc "^1.0.3"
+    expand-template "^2.0.3"
+    github-from-package "0.0.0"
+    minimist "^1.2.3"
+    mkdirp-classic "^0.5.3"
+    napi-build-utils "^1.0.1"
+    node-abi "^2.21.0"
+    noop-logger "^0.1.1"
+    npmlog "^4.0.1"
+    pump "^3.0.0"
+    rc "^1.2.7"
+    simple-get "^3.0.3"
+    tar-fs "^2.0.0"
+    tunnel-agent "^0.6.0"
+
+prebuild@^10.0.1:
+  version "10.0.1"
+  resolved "https://registry.yarnpkg.com/prebuild/-/prebuild-10.0.1.tgz#9d46a00f42b60ad1718479cc5e3d1ef4882b7f33"
+  integrity sha512-x0CkKDmHFwX49rTGEYJwB9jBQwJWxRzwUtP5PA9dP8khFGMm3oSFgYortxdlp0PkxB29EhWGp/KQE5g+adehYg==
+  dependencies:
+    cmake-js "~5.2.0"
+    detect-libc "^1.0.3"
+    each-series-async "^1.0.1"
+    execspawn "^1.0.1"
+    ghreleases "^3.0.2"
+    github-from-package "0.0.0"
+    glob "^7.1.6"
+    minimist "^1.1.2"
+    mkdirp "^0.5.1"
+    napi-build-utils "^1.0.1"
+    node-abi "^2.2.0"
+    node-gyp "^6.0.1"
+    node-ninja "^1.0.1"
+    noop-logger "^0.1.0"
+    npm-which "^3.0.1"
+    npmlog "^4.0.1"
+    nw-gyp "^3.6.3"
+    rc "^1.0.3"
+    run-waterfall "^1.1.6"
+    tar-stream "^2.1.0"
+
+private@^0.1.8:
+  version "0.1.8"
+  resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
+  integrity sha512-VvivMrbvd2nKkiG38qjULzlc+4Vx4wm/whI9pQD35YrARNnhxeiRktSOhSukRLFNlzg6Br/cJPet5J/u19r/mg==
+
+process-nextick-args@~1.0.6:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-1.0.7.tgz#150e20b756590ad3f91093f25a4f2ad8bff30ba3"
+  integrity sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M=
+
+psl@^1.1.28:
+  version "1.1.29"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.1.29.tgz#60f580d360170bb722a797cc704411e6da850c67"
+  integrity sha512-AeUmQ0oLN02flVHXWh9sSJF7mcdFq0ppid/JkErufc3hGIV/AMa8Fo9VgDo/cT2jFdOWoFvHp90qqBH54W+gjQ==
+
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  integrity sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
+punycode@^2.1.0, punycode@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+qs@~6.5.2:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
+  integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
+
+randombytes@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
+  integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
+  dependencies:
+    safe-buffer "^5.1.0"
+
+rc@^1.0.3, rc@^1.2.7:
+  version "1.2.8"
+  resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
+  integrity sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==
+  dependencies:
+    deep-extend "^0.6.0"
+    ini "~1.3.0"
+    minimist "^1.2.0"
+    strip-json-comments "~2.0.1"
+
+"readable-stream@>=1.0.33-1 <1.1.0-0", readable-stream@~1.0.26-2:
+  version "1.0.34"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
+  integrity sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
+"readable-stream@^2.0.0 || ^1.1.13", readable-stream@^2.0.2, readable-stream@^2.0.6:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.3.tgz#368f2512d79f9d46fdfc71349ae7878bbc1eb95c"
+  integrity sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.3"
+    isarray "~1.0.0"
+    process-nextick-args "~1.0.6"
+    safe-buffer "~5.1.1"
+    string_decoder "~1.0.3"
+    util-deprecate "~1.0.1"
+
+readable-stream@^3.0.1, readable-stream@^3.1.1, readable-stream@^3.4.0:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.6.0.tgz#337bbda3adc0706bd3e024426a286d4b4b2c9198"
+  integrity sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
+readable-stream@~1.1.9:
+  version "1.1.14"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
+  integrity sha1-fPTFTvZI44EwhMY23SB54WbAgdk=
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
+readable-stream@~2.1.5:
+  version "2.1.5"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.1.5.tgz#66fa8b720e1438b364681f2ad1a63c618448c9d0"
+  integrity sha1-ZvqLcg4UOLNkaB8q0aY8YYRIydA=
+  dependencies:
+    buffer-shims "^1.0.0"
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "~1.0.0"
+    process-nextick-args "~1.0.6"
+    string_decoder "~0.10.x"
+    util-deprecate "~1.0.1"
+
+readdirp@~3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.5.0.tgz#9ba74c019b15d365278d2e91bb8c48d7b4d42c9e"
+  integrity sha512-cMhu7c/8rdhkHXWsY+osBhfSy0JikwpHK/5+imo+LpeasTF8ouErHrlYkwT0++njiyuDvc7OFY5T3ukvZ8qmFQ==
+  dependencies:
+    picomatch "^2.2.1"
+
+regenerator-runtime@^0.10.0:
+  version "0.10.5"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz#336c3efc1220adcedda2c9fab67b5a7955a33658"
+  integrity sha1-M2w+/BIgrc7dosn6tntaeVWjNlg=
+
+regenerator-runtime@^0.11.0:
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
+  integrity sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==
+
+repeating@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
+  integrity sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=
+  dependencies:
+    is-finite "^1.0.0"
+
+request@2, request@^2.54.0, request@^2.88.0, request@^2.88.2:
+  version "2.88.2"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
+  integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.8.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.6"
+    extend "~3.0.2"
+    forever-agent "~0.6.1"
+    form-data "~2.3.2"
+    har-validator "~5.1.3"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.19"
+    oauth-sign "~0.9.0"
+    performance-now "^2.1.0"
+    qs "~6.5.2"
+    safe-buffer "^5.1.2"
+    tough-cookie "~2.5.0"
+    tunnel-agent "^0.6.0"
+    uuid "^3.3.2"
+
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
+
+rimraf@2, rimraf@^2.6.3:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
+  integrity sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==
+  dependencies:
+    glob "^7.1.3"
+
+rimraf@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
+  integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
+  dependencies:
+    glob "^7.1.3"
+
+rsvp@^3.0.13:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-3.6.2.tgz#2e96491599a96cde1b515d5674a8f7a91452926a"
+  integrity sha512-OfWGQTb9vnwRjwtA2QwpG2ICclHC3pgXZO5xt8H2EfgDquO0qVdSb5T88L4qJVAEugbS56pAuV4XZM58UX8ulw==
+
+run-waterfall@^1.1.6:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/run-waterfall/-/run-waterfall-1.1.7.tgz#ae368b549b2f5171f86c2924492cab3352a6e9c5"
+  integrity sha512-iFPgh7SatHXOG1ClcpdwHI63geV3Hc/iL6crGSyBlH2PY7Rm/za+zoKz6FfY/Qlw5K7JwSol8pseO8fN6CMhhQ==
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
+  integrity sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==
+
+safe-buffer@^5.1.2, safe-buffer@~5.2.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
+
+safer-buffer@^2.0.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+"semver@2.x || 3.x || 4 || 5", semver@^5.0.3, semver@^5.4.1, semver@^5.7.1:
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
+  integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
+
+semver@^4.3.3:
+  version "4.3.6"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-4.3.6.tgz#300bc6e0e86374f7ba61068b5b1ecd57fc6532da"
+  integrity sha1-MAvG4OhjdPe6YQaLWx7NV/xlMto=
+
+semver@^7.3.2:
+  version "7.3.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.2.tgz#604962b052b81ed0786aae84389ffba70ffd3938"
+  integrity sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==
+
+semver@~5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"
+  integrity sha1-myzl094C0XxgEq0yaqa00M9U+U8=
+
+serialize-javascript@5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-5.0.1.tgz#7886ec848049a462467a97d3d918ebb2aaf934f4"
+  integrity sha512-SaaNal9imEO737H2c05Og0/8LUXG7EnsZyMa8MzkmuHoELfT6txuj0cMqRj6zfPKnmQ1yasR4PCJc8x+M4JSPA==
+  dependencies:
+    randombytes "^2.1.0"
+
+set-blocking@~2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
+  integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
+
+setimmediate@~1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
+  integrity sha1-KQy7Iy4waULX1+qbg3Mqt4VvgoU=
+
+signal-exit@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
+  integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
+
+simple-concat@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.1.tgz#f46976082ba35c2263f1c8ab5edfe26c41c9552f"
+  integrity sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==
+
+simple-get@^3.0.3:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/simple-get/-/simple-get-3.1.0.tgz#b45be062435e50d159540b576202ceec40b9c6b3"
+  integrity sha512-bCR6cP+aTdScaQCnQKbPKtJOKDp/hj9EDLJo3Nw4y1QksqaovlW/bnptB6/c1e+qmNIDHRK+oXFDdEqBT8WzUA==
+  dependencies:
+    decompress-response "^4.2.0"
+    once "^1.3.1"
+    simple-concat "^1.0.0"
+
+simple-mime@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/simple-mime/-/simple-mime-0.1.0.tgz#95f517c4f466d7cff561a71fc9dab2596ea9ef2e"
+  integrity sha1-lfUXxPRm18/1YacfydqyWW6p7y4=
+
+slash@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
+  integrity sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU=
+
+source-map-support@^0.4.15:
+  version "0.4.18"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.18.tgz#0286a6de8be42641338594e97ccea75f0a2c585f"
+  integrity sha512-try0/JqxPLF9nOjvSta7tVondkP5dwgyLDjVoyMDlmjugT2lRZ1OfsrYTkCd2hkDnJTKRbO/Rl3orm8vlsUzbA==
+  dependencies:
+    source-map "^0.5.6"
+
+source-map-support@~0.2.8:
+  version "0.2.10"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.2.10.tgz#ea5a3900a1c1cb25096a0ae8cc5c2b4b10ded3dc"
+  integrity sha1-6lo5AKHByyUJagrozFwrSxDe09w=
+  dependencies:
+    source-map "0.1.32"
+
+source-map@0.1.32:
+  version "0.1.32"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.32.tgz#c8b6c167797ba4740a8ea33252162ff08591b266"
+  integrity sha1-yLbBZ3l7pHQKjqMyUhYv8IWRsmY=
+  dependencies:
+    amdefine ">=0.0.4"
+
+source-map@^0.5.6, source-map@^0.5.7:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
+
+splitargs@0:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/splitargs/-/splitargs-0.0.7.tgz#fe9f7ae657371b33b10cb80da143cf8249cf6b3b"
+  integrity sha1-/p965lc3GzOxDLgNoUPPgknPazs=
+
+sshpk@^1.7.0:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.14.2.tgz#c6fc61648a3d9c4e764fd3fcdf4ea105e492ba98"
+  integrity sha1-xvxhZIo9nE52T9P8306hBeSSupg=
+  dependencies:
+    asn1 "~0.2.3"
+    assert-plus "^1.0.0"
+    dashdash "^1.12.0"
+    getpass "^0.1.1"
+    safer-buffer "^2.0.2"
+  optionalDependencies:
+    bcrypt-pbkdf "^1.0.0"
+    ecc-jsbn "~0.1.1"
+    jsbn "~0.1.0"
+    tweetnacl "~0.14.0"
+
+string-width@^1.0.1, string-width@^1.0.2, "string-width@^1.0.2 || 2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
+  integrity sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=
+  dependencies:
+    code-point-at "^1.0.0"
+    is-fullwidth-code-point "^1.0.0"
+    strip-ansi "^3.0.0"
+
+string-width@^4.1.0, string-width@^4.2.0:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.2.tgz#dafd4f9559a7585cfba529c6a0a4f73488ebd4c5"
+  integrity sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.0"
+
+string_decoder@^1.1.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
+  integrity sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==
+  dependencies:
+    safe-buffer "~5.2.0"
+
+string_decoder@~0.10.x:
+  version "0.10.31"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
+  integrity sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=
+
+string_decoder@~1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.0.3.tgz#0fc67d7c141825de94282dd536bec6b9bce860ab"
+  integrity sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==
+  dependencies:
+    safe-buffer "~5.1.0"
+
+strip-ansi@^3.0.0, strip-ansi@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
+  dependencies:
+    ansi-regex "^2.0.0"
+
+strip-ansi@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.0.tgz#0b1571dd7669ccd4f3e06e14ef1eed26225ae532"
+  integrity sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==
+  dependencies:
+    ansi-regex "^5.0.0"
+
+strip-json-comments@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.1.1.tgz#31f1281b3832630434831c310c01cccda8cbe006"
+  integrity sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==
+
+strip-json-comments@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
+  integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
+
+supports-color@8.1.1:
+  version "8.1.1"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-8.1.1.tgz#cd6fc17e28500cff56c1b86c0a7fd4a54a73005c"
+  integrity sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==
+  dependencies:
+    has-flag "^4.0.0"
+
+supports-color@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
+  integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
+
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
+tar-fs@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/tar-fs/-/tar-fs-2.1.1.tgz#489a15ab85f1f0befabb370b7de4f9eb5cbe8784"
+  integrity sha512-V0r2Y9scmbDRLCNex/+hYzvp/zyYjvFbHPNgVTKfQvVrb6guiE/fxP+XblDNR011utopbkex2nM4dHNV6GDsng==
+  dependencies:
+    chownr "^1.1.1"
+    mkdirp-classic "^0.5.2"
+    pump "^3.0.0"
+    tar-stream "^2.1.4"
+
+tar-stream@^2.1.0, tar-stream@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/tar-stream/-/tar-stream-2.1.4.tgz#c4fb1a11eb0da29b893a5b25476397ba2d053bfa"
+  integrity sha512-o3pS2zlG4gxr67GmFYBLlq+dM8gyRGUOvsrHclSkvtVtQbjV0s/+ZE8OpICbaj8clrX3tjeHngYGP7rweaBnuw==
+  dependencies:
+    bl "^4.0.3"
+    end-of-stream "^1.4.1"
+    fs-constants "^1.0.0"
+    inherits "^2.0.3"
+    readable-stream "^3.1.1"
+
+tar@^2.0.0:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.2.tgz#0ca8848562c7299b8b446ff6a4d60cdbb23edc40"
+  integrity sha512-FCEhQ/4rE1zYv9rYXJw/msRqsnmlje5jHP6huWeBZ704jUTy02c5AZyWujpMR1ax6mVw9NyJMfuK2CMDWVIfgA==
+  dependencies:
+    block-stream "*"
+    fstream "^1.0.12"
+    inherits "2"
+
+tar@^4, tar@^4.4.12:
+  version "4.4.13"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.13.tgz#43b364bc52888d555298637b10d60790254ab525"
+  integrity sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==
+  dependencies:
+    chownr "^1.1.1"
+    fs-minipass "^1.2.5"
+    minipass "^2.8.6"
+    minizlib "^1.2.1"
+    mkdirp "^0.5.0"
+    safe-buffer "^5.1.2"
+    yallist "^3.0.3"
+
+tar@^6.0.2:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-6.0.5.tgz#bde815086e10b39f1dcd298e89d596e1535e200f"
+  integrity sha512-0b4HOimQHj9nXNEAA7zWwMM91Zhhba3pspja6sQbgTpynOJf+bkjBnfybNYzbpLbnwXnbyB4LOREvlyXLkCHSg==
+  dependencies:
+    chownr "^2.0.0"
+    fs-minipass "^2.0.0"
+    minipass "^3.0.0"
+    minizlib "^2.1.1"
+    mkdirp "^1.0.3"
+    yallist "^4.0.0"
+
+through2@~0.6.3:
+  version "0.6.5"
+  resolved "https://registry.yarnpkg.com/through2/-/through2-0.6.5.tgz#41ab9c67b29d57209071410e1d7a7a968cd3ad48"
+  integrity sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=
+  dependencies:
+    readable-stream ">=1.0.33-1 <1.1.0-0"
+    xtend ">=4.0.0 <4.1.0-0"
+
+to-fast-properties@^1.0.1, to-fast-properties@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
+  integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=
+
+to-regex-range@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-5.0.1.tgz#1648c44aae7c8d988a326018ed72f5b4dd0392e4"
+  integrity sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==
+  dependencies:
+    is-number "^7.0.0"
+
+tough-cookie@~2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.5.0.tgz#cd9fb2a0aa1d5a12b473bd9fb96fa3dcff65ade2"
+  integrity sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==
+  dependencies:
+    psl "^1.1.28"
+    punycode "^2.1.1"
+
+traceur@0.0.x:
+  version "0.0.111"
+  resolved "https://registry.yarnpkg.com/traceur/-/traceur-0.0.111.tgz#c04de74d14696c3373427de4fc08ecaf913fc3a1"
+  integrity sha1-wE3nTRRpbDNzQn3k/Ajsr5E/w6E=
+  dependencies:
+    commander "2.9.x"
+    glob "5.0.x"
+    rsvp "^3.0.13"
+    semver "^4.3.3"
+    source-map-support "~0.2.8"
+
+"traverse@>=0.3.0 <0.4":
+  version "0.3.9"
+  resolved "https://registry.yarnpkg.com/traverse/-/traverse-0.3.9.tgz#717b8f220cc0bb7b44e40514c22b2e8bbc70d8b9"
+  integrity sha1-cXuPIgzAu3tE5AUUwisui7xw2Lk=
+
+trim-right@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
+  integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
+
+tunnel-agent@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
+  integrity sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=
+  dependencies:
+    safe-buffer "^5.0.1"
+
+tweetnacl@^0.14.3, tweetnacl@~0.14.0:
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
+  integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
+
+type-detect@^4.0.0, type-detect@^4.0.5:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+  integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
+
+type@^1.0.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/type/-/type-1.2.0.tgz#848dd7698dafa3e54a6c479e759c4bc3f18847a0"
+  integrity sha512-+5nt5AAniqsCnu2cEQQdpzCAh33kVx8n0VoFidKpB1dVVLAN/F+bgVOqOJqOnEnrhp222clB5p3vUlD+1QAnfg==
+
+type@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/type/-/type-2.1.0.tgz#9bdc22c648cf8cf86dd23d32336a41cfb6475e3f"
+  integrity sha512-G9absDWvhAWCV2gmF1zKud3OyC61nZDwWvBL2DApaVFogI07CprggiQAOOjvp2NRjYWFzPyu7vwtDrQFq8jeSA==
+
+universalify@^0.1.0:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+  integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
+
+unzipper@^0.8.13:
+  version "0.8.14"
+  resolved "https://registry.yarnpkg.com/unzipper/-/unzipper-0.8.14.tgz#ade0524cd2fc14d11b8de258be22f9d247d3f79b"
+  integrity sha512-8rFtE7EP5ssOwGpN2dt1Q4njl0N1hUXJ7sSPz0leU2hRdq6+pra57z4YPBlVqm40vcgv6ooKZEAx48fMTv9x4w==
+  dependencies:
+    big-integer "^1.6.17"
+    binary "~0.3.0"
+    bluebird "~3.4.1"
+    buffer-indexof-polyfill "~1.0.0"
+    duplexer2 "~0.1.4"
+    fstream "~1.0.10"
+    listenercount "~1.0.1"
+    readable-stream "~2.1.5"
+    setimmediate "~1.0.4"
+
+uri-js@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
+  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
+  dependencies:
+    punycode "^2.1.0"
+
+url-join@0:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/url-join/-/url-join-0.0.1.tgz#1db48ad422d3402469a87f7d97bdebfe4fb1e3c8"
+  integrity sha1-HbSK1CLTQCRpqH99l73r/k+x48g=
+
+url-template@~2.0.6:
+  version "2.0.8"
+  resolved "https://registry.yarnpkg.com/url-template/-/url-template-2.0.8.tgz#fc565a3cccbff7730c775f5641f9555791439f21"
+  integrity sha1-/FZaPMy/93MMd19WQflVV5FDnyE=
+
+util-deprecate@^1.0.1, util-deprecate@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
+util-extend@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/util-extend/-/util-extend-1.0.3.tgz#a7c216d267545169637b3b6edc6ca9119e2ff93f"
+  integrity sha1-p8IW0mdUUWljeztu3GypEZ4v+T8=
+
+uuid@^3.3.2:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
+  integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
+
+verror@1.3.6:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/verror/-/verror-1.3.6.tgz#cff5df12946d297d2baaefaa2689e25be01c005c"
+  integrity sha1-z/XfEpRtKX0rqu+qJoniW+AcAFw=
+  dependencies:
+    extsprintf "1.0.2"
+
+which@1, which@^1.0.9, which@^1.2.10, which@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
+  integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==
+  dependencies:
+    isexe "^2.0.0"
+
+which@2.0.2, which@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
+  integrity sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==
+  dependencies:
+    isexe "^2.0.0"
+
+wide-align@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
+  integrity sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==
+  dependencies:
+    string-width "^1.0.2 || 2"
+
+wide-align@^1.1.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.2.tgz#571e0f1b0604636ebc0dfc21b0339bbe31341710"
+  integrity sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==
+  dependencies:
+    string-width "^1.0.2"
+
+window-size@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.4.tgz#f8e1aa1ee5a53ec5bf151ffa09742a6ad7697876"
+  integrity sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY=
+
+workerpool@6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/workerpool/-/workerpool-6.1.0.tgz#a8e038b4c94569596852de7a8ea4228eefdeb37b"
+  integrity sha512-toV7q9rWNYha963Pl/qyeZ6wG+3nnsyvolaNUS8+R5Wtw6qJPTxIlOP1ZSvcGhEJw+l3HMMmtiNo9Gl61G4GVg==
+
+wrap-ansi@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
+  integrity sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+"xtend@>=4.0.0 <4.1.0-0", xtend@~4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
+  integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
+
+y18n@^3.2.0:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.2.tgz#85c901bd6470ce71fc4bb723ad209b70f7f28696"
+  integrity sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==
+
+y18n@^5.0.5:
+  version "5.0.5"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-5.0.5.tgz#8769ec08d03b1ea2df2500acef561743bbb9ab18"
+  integrity sha512-hsRUr4FFrvhhRH12wOdfs38Gy7k2FFzB9qgN9v3aLykRq0dRcdcpz5C9FxdS2NuhOrI/628b/KSTJ3rwHysYSg==
+
+yallist@^3.0.0, yallist@^3.0.3:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
+  integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
+
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
+
+yargs-parser@20.2.4, yargs-parser@^20.2.2:
+  version "20.2.4"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.4.tgz#b42890f14566796f85ae8e3a25290d205f154a54"
+  integrity sha512-WOkpgNhPTlE73h4VFAFsOnomJVaovO8VqLDzy5saChRBFQFBoMYirowyW+Q9HB4HFF4Z7VZTiG3iSzJJA29yRA==
+
+yargs-unparser@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-2.0.0.tgz#f131f9226911ae5d9ad38c432fe809366c2325eb"
+  integrity sha512-7pRTIA9Qc1caZ0bZ6RYRGbHJthJWuakf+WmHK0rVeLkNrrGhfoabBNdue6kdINI6r4if7ocq9aD/n7xwKOdzOA==
+  dependencies:
+    camelcase "^6.0.0"
+    decamelize "^4.0.0"
+    flat "^5.0.2"
+    is-plain-obj "^2.1.0"
+
+yargs@16.2.0:
+  version "16.2.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-16.2.0.tgz#1c82bf0f6b6a66eafce7ef30e376f49a12477f66"
+  integrity sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==
+  dependencies:
+    cliui "^7.0.2"
+    escalade "^3.1.1"
+    get-caller-file "^2.0.5"
+    require-directory "^2.1.1"
+    string-width "^4.2.0"
+    y18n "^5.0.5"
+    yargs-parser "^20.2.2"
+
+yargs@^3.6.0:
+  version "3.32.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.32.0.tgz#03088e9ebf9e756b69751611d2a5ef591482c995"
+  integrity sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=
+  dependencies:
+    camelcase "^2.0.1"
+    cliui "^3.0.3"
+    decamelize "^1.1.1"
+    os-locale "^1.4.0"
+    string-width "^1.0.1"
+    window-size "^0.1.4"
+    y18n "^3.2.0"
+
+yocto-queue@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"
+  integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.nix
new file mode 100644
index 000000000000..d6b1b99da84d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/keytar/yarn.nix
@@ -0,0 +1,2869 @@
+{ fetchurl, fetchgit, linkFarm, runCommand, gnutar }: rec {
+  offline_cache = linkFarm "offline" packages;
+  packages = [
+    {
+      name = "_ungap_promise_all_settled___promise_all_settled_1.1.2.tgz";
+      path = fetchurl {
+        name = "_ungap_promise_all_settled___promise_all_settled_1.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/@ungap/promise-all-settled/-/promise-all-settled-1.1.2.tgz";
+        sha1 = "aa58042711d6e3275dd37dc597e5d31e8c290a44";
+      };
+    }
+    {
+      name = "abbrev___abbrev_1.1.0.tgz";
+      path = fetchurl {
+        name = "abbrev___abbrev_1.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.0.tgz";
+        sha1 = "d0554c2256636e2f56e7c2e5ad183f859428d81f";
+      };
+    }
+    {
+      name = "after___after_0.8.2.tgz";
+      path = fetchurl {
+        name = "after___after_0.8.2.tgz";
+        url  = "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz";
+        sha1 = "fedb394f9f0e02aa9768e702bda23b505fae7e1f";
+      };
+    }
+    {
+      name = "ajv___ajv_6.12.4.tgz";
+      path = fetchurl {
+        name = "ajv___ajv_6.12.4.tgz";
+        url  = "https://registry.yarnpkg.com/ajv/-/ajv-6.12.4.tgz";
+        sha1 = "0614facc4522127fa713445c6bfd3ebd376e2234";
+      };
+    }
+    {
+      name = "amdefine___amdefine_1.0.1.tgz";
+      path = fetchurl {
+        name = "amdefine___amdefine_1.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz";
+        sha1 = "4a5282ac164729e93619bcfd3ad151f817ce91f5";
+      };
+    }
+    {
+      name = "ansi_colors___ansi_colors_4.1.1.tgz";
+      path = fetchurl {
+        name = "ansi_colors___ansi_colors_4.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-4.1.1.tgz";
+        sha1 = "cbb9ae256bf750af1eab344f229aa27fe94ba348";
+      };
+    }
+    {
+      name = "ansi_regex___ansi_regex_2.1.1.tgz";
+      path = fetchurl {
+        name = "ansi_regex___ansi_regex_2.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz";
+        sha1 = "c3b33ab5ee360d86e0e628f0468ae7ef27d654df";
+      };
+    }
+    {
+      name = "ansi_regex___ansi_regex_5.0.0.tgz";
+      path = fetchurl {
+        name = "ansi_regex___ansi_regex_5.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz";
+        sha1 = "388539f55179bf39339c81af30a654d69f87cb75";
+      };
+    }
+    {
+      name = "ansi_styles___ansi_styles_2.2.1.tgz";
+      path = fetchurl {
+        name = "ansi_styles___ansi_styles_2.2.1.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz";
+        sha1 = "b432dd3358b634cf75e1e4664368240533c1ddbe";
+      };
+    }
+    {
+      name = "ansi_styles___ansi_styles_4.3.0.tgz";
+      path = fetchurl {
+        name = "ansi_styles___ansi_styles_4.3.0.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz";
+        sha1 = "edd803628ae71c04c85ae7a0906edad34b648937";
+      };
+    }
+    {
+      name = "ansi___ansi_0.3.1.tgz";
+      path = fetchurl {
+        name = "ansi___ansi_0.3.1.tgz";
+        url  = "https://registry.yarnpkg.com/ansi/-/ansi-0.3.1.tgz";
+        sha1 = "0c42d4fb17160d5a9af1e484bace1c66922c1b21";
+      };
+    }
+    {
+      name = "anymatch___anymatch_3.1.1.tgz";
+      path = fetchurl {
+        name = "anymatch___anymatch_3.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz";
+        sha1 = "c55ecf02185e2469259399310c173ce31233b142";
+      };
+    }
+    {
+      name = "aproba___aproba_1.1.2.tgz";
+      path = fetchurl {
+        name = "aproba___aproba_1.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/aproba/-/aproba-1.1.2.tgz";
+        sha1 = "45c6629094de4e96f693ef7eab74ae079c240fc1";
+      };
+    }
+    {
+      name = "are_we_there_yet___are_we_there_yet_1.0.6.tgz";
+      path = fetchurl {
+        name = "are_we_there_yet___are_we_there_yet_1.0.6.tgz";
+        url  = "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.0.6.tgz";
+        sha1 = "a2d28c93102aa6cc96245a26cb954de06ec53f0c";
+      };
+    }
+    {
+      name = "are_we_there_yet___are_we_there_yet_1.1.4.tgz";
+      path = fetchurl {
+        name = "are_we_there_yet___are_we_there_yet_1.1.4.tgz";
+        url  = "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz";
+        sha1 = "bb5dca382bb94f05e15194373d16fd3ba1ca110d";
+      };
+    }
+    {
+      name = "argparse___argparse_2.0.1.tgz";
+      path = fetchurl {
+        name = "argparse___argparse_2.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz";
+        sha1 = "246f50f3ca78a3240f6c997e8a9bd1eac49e4b38";
+      };
+    }
+    {
+      name = "array_index___array_index_1.0.0.tgz";
+      path = fetchurl {
+        name = "array_index___array_index_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/array-index/-/array-index-1.0.0.tgz";
+        sha1 = "ec56a749ee103e4e08c790b9c353df16055b97f9";
+      };
+    }
+    {
+      name = "asn1___asn1_0.2.3.tgz";
+      path = fetchurl {
+        name = "asn1___asn1_0.2.3.tgz";
+        url  = "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz";
+        sha1 = "dac8787713c9966849fc8180777ebe9c1ddf3b86";
+      };
+    }
+    {
+      name = "assert_plus___assert_plus_1.0.0.tgz";
+      path = fetchurl {
+        name = "assert_plus___assert_plus_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz";
+        sha1 = "f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525";
+      };
+    }
+    {
+      name = "assertion_error___assertion_error_1.1.0.tgz";
+      path = fetchurl {
+        name = "assertion_error___assertion_error_1.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz";
+        sha1 = "e60b6b0e8f301bd97e5375215bda406c85118c0b";
+      };
+    }
+    {
+      name = "asynckit___asynckit_0.4.0.tgz";
+      path = fetchurl {
+        name = "asynckit___asynckit_0.4.0.tgz";
+        url  = "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz";
+        sha1 = "c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79";
+      };
+    }
+    {
+      name = "aws_sign2___aws_sign2_0.7.0.tgz";
+      path = fetchurl {
+        name = "aws_sign2___aws_sign2_0.7.0.tgz";
+        url  = "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz";
+        sha1 = "b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8";
+      };
+    }
+    {
+      name = "aws4___aws4_1.10.1.tgz";
+      path = fetchurl {
+        name = "aws4___aws4_1.10.1.tgz";
+        url  = "https://registry.yarnpkg.com/aws4/-/aws4-1.10.1.tgz";
+        sha1 = "e1e82e4f3e999e2cfd61b161280d16a111f86428";
+      };
+    }
+    {
+      name = "babel_code_frame___babel_code_frame_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_code_frame___babel_code_frame_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz";
+        sha1 = "63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b";
+      };
+    }
+    {
+      name = "babel_core___babel_core_6.26.3.tgz";
+      path = fetchurl {
+        name = "babel_core___babel_core_6.26.3.tgz";
+        url  = "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz";
+        sha1 = "b2e2f09e342d0f0c88e2f02e067794125e75c207";
+      };
+    }
+    {
+      name = "babel_generator___babel_generator_6.26.1.tgz";
+      path = fetchurl {
+        name = "babel_generator___babel_generator_6.26.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-generator/-/babel-generator-6.26.1.tgz";
+        sha1 = "1844408d3b8f0d35a404ea7ac180f087a601bd90";
+      };
+    }
+    {
+      name = "babel_helper_function_name___babel_helper_function_name_6.24.1.tgz";
+      path = fetchurl {
+        name = "babel_helper_function_name___babel_helper_function_name_6.24.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-6.24.1.tgz";
+        sha1 = "d3475b8c03ed98242a25b48351ab18399d3580a9";
+      };
+    }
+    {
+      name = "babel_helper_get_function_arity___babel_helper_get_function_arity_6.24.1.tgz";
+      path = fetchurl {
+        name = "babel_helper_get_function_arity___babel_helper_get_function_arity_6.24.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-6.24.1.tgz";
+        sha1 = "8f7782aa93407c41d3aa50908f89b031b1b6853d";
+      };
+    }
+    {
+      name = "babel_helper_remap_async_to_generator___babel_helper_remap_async_to_generator_6.24.1.tgz";
+      path = fetchurl {
+        name = "babel_helper_remap_async_to_generator___babel_helper_remap_async_to_generator_6.24.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-helper-remap-async-to-generator/-/babel-helper-remap-async-to-generator-6.24.1.tgz";
+        sha1 = "5ec581827ad723fecdd381f1c928390676e4551b";
+      };
+    }
+    {
+      name = "babel_helpers___babel_helpers_6.24.1.tgz";
+      path = fetchurl {
+        name = "babel_helpers___babel_helpers_6.24.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-helpers/-/babel-helpers-6.24.1.tgz";
+        sha1 = "3471de9caec388e5c850e597e58a26ddf37602b2";
+      };
+    }
+    {
+      name = "babel_messages___babel_messages_6.23.0.tgz";
+      path = fetchurl {
+        name = "babel_messages___babel_messages_6.23.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz";
+        sha1 = "f3cdf4703858035b2a2951c6ec5edf6c62f2630e";
+      };
+    }
+    {
+      name = "babel_plugin_syntax_async_functions___babel_plugin_syntax_async_functions_6.13.0.tgz";
+      path = fetchurl {
+        name = "babel_plugin_syntax_async_functions___babel_plugin_syntax_async_functions_6.13.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz";
+        sha1 = "cad9cad1191b5ad634bf30ae0872391e0647be95";
+      };
+    }
+    {
+      name = "babel_plugin_transform_async_to_generator___babel_plugin_transform_async_to_generator_6.24.1.tgz";
+      path = fetchurl {
+        name = "babel_plugin_transform_async_to_generator___babel_plugin_transform_async_to_generator_6.24.1.tgz";
+        url  = "https://registry.yarnpkg.com/babel-plugin-transform-async-to-generator/-/babel-plugin-transform-async-to-generator-6.24.1.tgz";
+        sha1 = "6536e378aff6cb1d5517ac0e40eb3e9fc8d08761";
+      };
+    }
+    {
+      name = "babel_register___babel_register_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_register___babel_register_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-register/-/babel-register-6.26.0.tgz";
+        sha1 = "6ed021173e2fcb486d7acb45c6009a856f647071";
+      };
+    }
+    {
+      name = "babel_runtime___babel_runtime_6.23.0.tgz";
+      path = fetchurl {
+        name = "babel_runtime___babel_runtime_6.23.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz";
+        sha1 = "0a9489f144de70efb3ce4300accdb329e2fc543b";
+      };
+    }
+    {
+      name = "babel_runtime___babel_runtime_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_runtime___babel_runtime_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz";
+        sha1 = "965c7058668e82b55d7bfe04ff2337bc8b5647fe";
+      };
+    }
+    {
+      name = "babel_template___babel_template_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_template___babel_template_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-template/-/babel-template-6.26.0.tgz";
+        sha1 = "de03e2d16396b069f46dd9fff8521fb1a0e35e02";
+      };
+    }
+    {
+      name = "babel_traverse___babel_traverse_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_traverse___babel_traverse_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz";
+        sha1 = "46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee";
+      };
+    }
+    {
+      name = "babel_types___babel_types_6.25.0.tgz";
+      path = fetchurl {
+        name = "babel_types___babel_types_6.25.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-types/-/babel-types-6.25.0.tgz";
+        sha1 = "70afb248d5660e5d18f811d91c8303b54134a18e";
+      };
+    }
+    {
+      name = "babel_types___babel_types_6.26.0.tgz";
+      path = fetchurl {
+        name = "babel_types___babel_types_6.26.0.tgz";
+        url  = "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz";
+        sha1 = "a3b073f94ab49eb6fa55cd65227a334380632497";
+      };
+    }
+    {
+      name = "babylon___babylon_6.18.0.tgz";
+      path = fetchurl {
+        name = "babylon___babylon_6.18.0.tgz";
+        url  = "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz";
+        sha1 = "af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3";
+      };
+    }
+    {
+      name = "balanced_match___balanced_match_1.0.0.tgz";
+      path = fetchurl {
+        name = "balanced_match___balanced_match_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz";
+        sha1 = "89b4d199ab2bee49de164ea02b89ce462d71b767";
+      };
+    }
+    {
+      name = "base64_js___base64_js_1.5.1.tgz";
+      path = fetchurl {
+        name = "base64_js___base64_js_1.5.1.tgz";
+        url  = "https://registry.yarnpkg.com/base64-js/-/base64-js-1.5.1.tgz";
+        sha1 = "1b1b440160a5bf7ad40b650f095963481903930a";
+      };
+    }
+    {
+      name = "bcrypt_pbkdf___bcrypt_pbkdf_1.0.2.tgz";
+      path = fetchurl {
+        name = "bcrypt_pbkdf___bcrypt_pbkdf_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz";
+        sha1 = "a4301d389b6a43f9b67ff3ca11a3f6637e360e9e";
+      };
+    }
+    {
+      name = "big_integer___big_integer_1.6.48.tgz";
+      path = fetchurl {
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+    }
+    {
+      name = "wide_align___wide_align_1.1.3.tgz";
+      path = fetchurl {
+        name = "wide_align___wide_align_1.1.3.tgz";
+        url  = "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz";
+        sha1 = "ae074e6bdc0c14a431e804e624549c633b000457";
+      };
+    }
+    {
+      name = "wide_align___wide_align_1.1.2.tgz";
+      path = fetchurl {
+        name = "wide_align___wide_align_1.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.2.tgz";
+        sha1 = "571e0f1b0604636ebc0dfc21b0339bbe31341710";
+      };
+    }
+    {
+      name = "window_size___window_size_0.1.4.tgz";
+      path = fetchurl {
+        name = "window_size___window_size_0.1.4.tgz";
+        url  = "https://registry.yarnpkg.com/window-size/-/window-size-0.1.4.tgz";
+        sha1 = "f8e1aa1ee5a53ec5bf151ffa09742a6ad7697876";
+      };
+    }
+    {
+      name = "workerpool___workerpool_6.1.0.tgz";
+      path = fetchurl {
+        name = "workerpool___workerpool_6.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/workerpool/-/workerpool-6.1.0.tgz";
+        sha1 = "a8e038b4c94569596852de7a8ea4228eefdeb37b";
+      };
+    }
+    {
+      name = "wrap_ansi___wrap_ansi_2.1.0.tgz";
+      path = fetchurl {
+        name = "wrap_ansi___wrap_ansi_2.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz";
+        sha1 = "d8fc3d284dd05794fe84973caecdd1cf824fdd85";
+      };
+    }
+    {
+      name = "wrap_ansi___wrap_ansi_7.0.0.tgz";
+      path = fetchurl {
+        name = "wrap_ansi___wrap_ansi_7.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz";
+        sha1 = "67e145cff510a6a6984bdf1152911d69d2eb9e43";
+      };
+    }
+    {
+      name = "wrappy___wrappy_1.0.2.tgz";
+      path = fetchurl {
+        name = "wrappy___wrappy_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz";
+        sha1 = "b5243d8f3ec1aa35f1364605bc0d1036e30ab69f";
+      };
+    }
+    {
+      name = "xtend___xtend_4.0.2.tgz";
+      path = fetchurl {
+        name = "xtend___xtend_4.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz";
+        sha1 = "bb72779f5fa465186b1f438f674fa347fdb5db54";
+      };
+    }
+    {
+      name = "y18n___y18n_3.2.2.tgz";
+      path = fetchurl {
+        name = "y18n___y18n_3.2.2.tgz";
+        url  = "https://registry.yarnpkg.com/y18n/-/y18n-3.2.2.tgz";
+        sha1 = "85c901bd6470ce71fc4bb723ad209b70f7f28696";
+      };
+    }
+    {
+      name = "y18n___y18n_5.0.5.tgz";
+      path = fetchurl {
+        name = "y18n___y18n_5.0.5.tgz";
+        url  = "https://registry.yarnpkg.com/y18n/-/y18n-5.0.5.tgz";
+        sha1 = "8769ec08d03b1ea2df2500acef561743bbb9ab18";
+      };
+    }
+    {
+      name = "yallist___yallist_3.1.1.tgz";
+      path = fetchurl {
+        name = "yallist___yallist_3.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz";
+        sha1 = "dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd";
+      };
+    }
+    {
+      name = "yallist___yallist_4.0.0.tgz";
+      path = fetchurl {
+        name = "yallist___yallist_4.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz";
+        sha1 = "9bb92790d9c0effec63be73519e11a35019a3a72";
+      };
+    }
+    {
+      name = "yargs_parser___yargs_parser_20.2.4.tgz";
+      path = fetchurl {
+        name = "yargs_parser___yargs_parser_20.2.4.tgz";
+        url  = "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.4.tgz";
+        sha1 = "b42890f14566796f85ae8e3a25290d205f154a54";
+      };
+    }
+    {
+      name = "yargs_unparser___yargs_unparser_2.0.0.tgz";
+      path = fetchurl {
+        name = "yargs_unparser___yargs_unparser_2.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-2.0.0.tgz";
+        sha1 = "f131f9226911ae5d9ad38c432fe809366c2325eb";
+      };
+    }
+    {
+      name = "yargs___yargs_16.2.0.tgz";
+      path = fetchurl {
+        name = "yargs___yargs_16.2.0.tgz";
+        url  = "https://registry.yarnpkg.com/yargs/-/yargs-16.2.0.tgz";
+        sha1 = "1c82bf0f6b6a66eafce7ef30e376f49a12477f66";
+      };
+    }
+    {
+      name = "yargs___yargs_3.32.0.tgz";
+      path = fetchurl {
+        name = "yargs___yargs_3.32.0.tgz";
+        url  = "https://registry.yarnpkg.com/yargs/-/yargs-3.32.0.tgz";
+        sha1 = "03088e9ebf9e756b69751611d2a5ef591482c995";
+      };
+    }
+    {
+      name = "yocto_queue___yocto_queue_0.1.0.tgz";
+      path = fetchurl {
+        name = "yocto_queue___yocto_queue_0.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz";
+        sha1 = "0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b";
+      };
+    }
+  ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/default.nix
new file mode 100644
index 000000000000..ae9dd96228b5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/default.nix
@@ -0,0 +1,46 @@
+{ lib, stdenv, rustPlatform, fetchFromGitHub, callPackage, sqlcipher, nodejs-14_x, python3, yarn, fixup_yarn_lock, CoreServices }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "seshat-node";
+  version = "2.3.0";
+
+  src = fetchFromGitHub {
+    owner = "matrix-org";
+    repo = "seshat";
+    rev = version;
+    sha256 = "0zigrz59mhih9asmbbh38z2fg0sii2342q6q0500qil2a0rssai7";
+  };
+
+  sourceRoot = "source/seshat-node/native";
+
+  nativeBuildInputs = [ nodejs-14_x python3 yarn ];
+  buildInputs = [ sqlcipher ] ++ lib.optional stdenv.isDarwin CoreServices;
+
+  npm_config_nodedir = nodejs-14_x;
+
+  yarnOfflineCache = (callPackage ./yarn.nix {}).offline_cache;
+
+  buildPhase = ''
+    cd ..
+    chmod u+w . ./yarn.lock
+    export HOME=$PWD/tmp
+    mkdir -p $HOME
+    yarn config --offline set yarn-offline-mirror ${yarnOfflineCache}
+    ${fixup_yarn_lock}/bin/fixup_yarn_lock yarn.lock
+    yarn install --offline --frozen-lockfile --ignore-platform --ignore-scripts --no-progress --non-interactive
+    patchShebangs node_modules/
+    node_modules/.bin/neon build --release
+  '';
+
+  doCheck = false;
+
+  installPhase = ''
+    shopt -s extglob
+    rm -rf native/!(index.node)
+    rm -rf node_modules
+    rm -rf $HOME
+    cp -r . $out
+  '';
+
+  cargoSha256 = "0habjf85mzqxwf8k15msm4cavd7ldq4zpxddkwd4inl2lkvlffqj";
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/update.sh
new file mode 100755
index 000000000000..b201501e1c43
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/update.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=../ -i bash -p wget yarn2nix
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates the Yarn dependency lock files."
+  echo "Usage: $0 <git release tag>"
+  exit 1
+fi
+
+SRC="https://raw.githubusercontent.com/matrix-org/seshat/$1"
+
+wget "$SRC/seshat-node/yarn.lock"
+yarn2nix > yarn.nix
+rm yarn.lock
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/yarn.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/yarn.nix
new file mode 100644
index 000000000000..b861502bf719
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/seshat/yarn.nix
@@ -0,0 +1,4557 @@
+{ fetchurl, fetchgit, linkFarm, runCommand, gnutar }: rec {
+  offline_cache = linkFarm "offline" packages;
+  packages = [
+    {
+      name = "_babel_code_frame___code_frame_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_code_frame___code_frame_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.14.5.tgz";
+        sha1 = "23b08d740e83f49c5e59945fbf1b43e80bbf4edb";
+      };
+    }
+    {
+      name = "_babel_compat_data___compat_data_7.14.7.tgz";
+      path = fetchurl {
+        name = "_babel_compat_data___compat_data_7.14.7.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.14.7.tgz";
+        sha1 = "7b047d7a3a89a67d2258dc61f604f098f1bc7e08";
+      };
+    }
+    {
+      name = "_babel_core___core_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_core___core_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/core/-/core-7.14.8.tgz";
+        sha1 = "20cdf7c84b5d86d83fac8710a8bc605a7ba3f010";
+      };
+    }
+    {
+      name = "_babel_generator___generator_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_generator___generator_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/generator/-/generator-7.14.8.tgz";
+        sha1 = "bf86fd6af96cf3b74395a8ca409515f89423e070";
+      };
+    }
+    {
+      name = "_babel_helper_compilation_targets___helper_compilation_targets_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_compilation_targets___helper_compilation_targets_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-compilation-targets/-/helper-compilation-targets-7.14.5.tgz";
+        sha1 = "7a99c5d0967911e972fe2c3411f7d5b498498ecf";
+      };
+    }
+    {
+      name = "_babel_helper_function_name___helper_function_name_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_function_name___helper_function_name_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.14.5.tgz";
+        sha1 = "89e2c474972f15d8e233b52ee8c480e2cfcd50c4";
+      };
+    }
+    {
+      name = "_babel_helper_get_function_arity___helper_get_function_arity_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_get_function_arity___helper_get_function_arity_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.14.5.tgz";
+        sha1 = "25fbfa579b0937eee1f3b805ece4ce398c431815";
+      };
+    }
+    {
+      name = "_babel_helper_hoist_variables___helper_hoist_variables_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_hoist_variables___helper_hoist_variables_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-hoist-variables/-/helper-hoist-variables-7.14.5.tgz";
+        sha1 = "e0dd27c33a78e577d7c8884916a3e7ef1f7c7f8d";
+      };
+    }
+    {
+      name = "_babel_helper_member_expression_to_functions___helper_member_expression_to_functions_7.14.7.tgz";
+      path = fetchurl {
+        name = "_babel_helper_member_expression_to_functions___helper_member_expression_to_functions_7.14.7.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.14.7.tgz";
+        sha1 = "97e56244beb94211fe277bd818e3a329c66f7970";
+      };
+    }
+    {
+      name = "_babel_helper_module_imports___helper_module_imports_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_module_imports___helper_module_imports_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.14.5.tgz";
+        sha1 = "6d1a44df6a38c957aa7c312da076429f11b422f3";
+      };
+    }
+    {
+      name = "_babel_helper_module_transforms___helper_module_transforms_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_helper_module_transforms___helper_module_transforms_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.14.8.tgz";
+        sha1 = "d4279f7e3fd5f4d5d342d833af36d4dd87d7dc49";
+      };
+    }
+    {
+      name = "_babel_helper_optimise_call_expression___helper_optimise_call_expression_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_optimise_call_expression___helper_optimise_call_expression_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.14.5.tgz";
+        sha1 = "f27395a8619e0665b3f0364cddb41c25d71b499c";
+      };
+    }
+    {
+      name = "_babel_helper_plugin_utils___helper_plugin_utils_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_plugin_utils___helper_plugin_utils_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.14.5.tgz";
+        sha1 = "5ac822ce97eec46741ab70a517971e443a70c5a9";
+      };
+    }
+    {
+      name = "_babel_helper_replace_supers___helper_replace_supers_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_replace_supers___helper_replace_supers_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.14.5.tgz";
+        sha1 = "0ecc0b03c41cd567b4024ea016134c28414abb94";
+      };
+    }
+    {
+      name = "_babel_helper_simple_access___helper_simple_access_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_helper_simple_access___helper_simple_access_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.14.8.tgz";
+        sha1 = "82e1fec0644a7e775c74d305f212c39f8fe73924";
+      };
+    }
+    {
+      name = "_babel_helper_split_export_declaration___helper_split_export_declaration_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_split_export_declaration___helper_split_export_declaration_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.14.5.tgz";
+        sha1 = "22b23a54ef51c2b7605d851930c1976dd0bc693a";
+      };
+    }
+    {
+      name = "_babel_helper_validator_identifier___helper_validator_identifier_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_helper_validator_identifier___helper_validator_identifier_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.8.tgz";
+        sha1 = "32be33a756f29e278a0d644fa08a2c9e0f88a34c";
+      };
+    }
+    {
+      name = "_babel_helper_validator_option___helper_validator_option_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_helper_validator_option___helper_validator_option_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.14.5.tgz";
+        sha1 = "6e72a1fff18d5dfcb878e1e62f1a021c4b72d5a3";
+      };
+    }
+    {
+      name = "_babel_helpers___helpers_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_helpers___helpers_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.14.8.tgz";
+        sha1 = "839f88f463025886cff7f85a35297007e2da1b77";
+      };
+    }
+    {
+      name = "_babel_highlight___highlight_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_highlight___highlight_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.14.5.tgz";
+        sha1 = "6861a52f03966405001f6aa534a01a24d99e8cd9";
+      };
+    }
+    {
+      name = "_babel_parser___parser_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_parser___parser_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.8.tgz";
+        sha1 = "66fd41666b2d7b840bd5ace7f7416d5ac60208d4";
+      };
+    }
+    {
+      name = "_babel_plugin_syntax_object_rest_spread___plugin_syntax_object_rest_spread_7.8.3.tgz";
+      path = fetchurl {
+        name = "_babel_plugin_syntax_object_rest_spread___plugin_syntax_object_rest_spread_7.8.3.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/plugin-syntax-object-rest-spread/-/plugin-syntax-object-rest-spread-7.8.3.tgz";
+        sha1 = "60e225edcbd98a640332a2e72dd3e66f1af55871";
+      };
+    }
+    {
+      name = "_babel_template___template_7.14.5.tgz";
+      path = fetchurl {
+        name = "_babel_template___template_7.14.5.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/template/-/template-7.14.5.tgz";
+        sha1 = "a9bc9d8b33354ff6e55a9c60d1109200a68974f4";
+      };
+    }
+    {
+      name = "_babel_traverse___traverse_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_traverse___traverse_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.14.8.tgz";
+        sha1 = "c0253f02677c5de1a8ff9df6b0aacbec7da1a8ce";
+      };
+    }
+    {
+      name = "_babel_types___types_7.14.8.tgz";
+      path = fetchurl {
+        name = "_babel_types___types_7.14.8.tgz";
+        url  = "https://registry.yarnpkg.com/@babel/types/-/types-7.14.8.tgz";
+        sha1 = "38109de8fcadc06415fbd9b74df0065d4d41c728";
+      };
+    }
+    {
+      name = "_cnakazawa_watch___watch_1.0.4.tgz";
+      path = fetchurl {
+        name = "_cnakazawa_watch___watch_1.0.4.tgz";
+        url  = "https://registry.yarnpkg.com/@cnakazawa/watch/-/watch-1.0.4.tgz";
+        sha1 = "f864ae85004d0fcab6f50be9141c4da368d1656a";
+      };
+    }
+    {
+      name = "_jest_console___console_24.9.0.tgz";
+      path = fetchurl {
+        name = "_jest_console___console_24.9.0.tgz";
+        url  = "https://registry.yarnpkg.com/@jest/console/-/console-24.9.0.tgz";
+        sha1 = "79b1bc06fb74a8cfb01cbdedf945584b1b9707f0";
+      };
+    }
+    {
+      name = "_jest_core___core_24.9.0.tgz";
+      path = fetchurl {
+        name = "_jest_core___core_24.9.0.tgz";
+        url  = "https://registry.yarnpkg.com/@jest/core/-/core-24.9.0.tgz";
+        sha1 = "2ceccd0b93181f9c4850e74f2a9ad43d351369c4";
+      };
+    }
+    {
+      name = "_jest_environment___environment_24.9.0.tgz";
+      path = fetchurl {
+        name = "_jest_environment___environment_24.9.0.tgz";
+        url  = "https://registry.yarnpkg.com/@jest/environment/-/environment-24.9.0.tgz";
+        sha1 = "21e3afa2d65c0586cbd6cbefe208bafade44ab18";
+      };
+    }
+    {
+      name = "_jest_fake_timers___fake_timers_24.9.0.tgz";
+      path = fetchurl {
+        name = "_jest_fake_timers___fake_timers_24.9.0.tgz";
+        url  = "https://registry.yarnpkg.com/@jest/fake-timers/-/fake-timers-24.9.0.tgz";
+        sha1 = "ba3e6bf0eecd09a636049896434d306636540c93";
+      };
+    }
+    {
+      name = "_jest_reporters___reporters_24.9.0.tgz";
+      path = fetchurl {
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+      path = fetchurl {
+        name = "which_module___which_module_2.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz";
+        sha1 = "d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a";
+      };
+    }
+    {
+      name = "which___which_1.3.1.tgz";
+      path = fetchurl {
+        name = "which___which_1.3.1.tgz";
+        url  = "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz";
+        sha1 = "a45043d54f5805316da8d62f9f50918d3da70b0a";
+      };
+    }
+    {
+      name = "word_wrap___word_wrap_1.2.3.tgz";
+      path = fetchurl {
+        name = "word_wrap___word_wrap_1.2.3.tgz";
+        url  = "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz";
+        sha1 = "610636f6b1f703891bd34771ccb17fb93b47079c";
+      };
+    }
+    {
+      name = "wordwrap___wordwrap_1.0.0.tgz";
+      path = fetchurl {
+        name = "wordwrap___wordwrap_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz";
+        sha1 = "27584810891456a4171c8d0226441ade90cbcaeb";
+      };
+    }
+    {
+      name = "wordwrapjs___wordwrapjs_4.0.1.tgz";
+      path = fetchurl {
+        name = "wordwrapjs___wordwrapjs_4.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/wordwrapjs/-/wordwrapjs-4.0.1.tgz";
+        sha1 = "d9790bccfb110a0fc7836b5ebce0937b37a8b98f";
+      };
+    }
+    {
+      name = "wrap_ansi___wrap_ansi_5.1.0.tgz";
+      path = fetchurl {
+        name = "wrap_ansi___wrap_ansi_5.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-5.1.0.tgz";
+        sha1 = "1fd1f67235d5b6d0fee781056001bfb694c03b09";
+      };
+    }
+    {
+      name = "wrappy___wrappy_1.0.2.tgz";
+      path = fetchurl {
+        name = "wrappy___wrappy_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz";
+        sha1 = "b5243d8f3ec1aa35f1364605bc0d1036e30ab69f";
+      };
+    }
+    {
+      name = "write_file_atomic___write_file_atomic_2.4.1.tgz";
+      path = fetchurl {
+        name = "write_file_atomic___write_file_atomic_2.4.1.tgz";
+        url  = "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-2.4.1.tgz";
+        sha1 = "d0b05463c188ae804396fd5ab2a370062af87529";
+      };
+    }
+    {
+      name = "write___write_1.0.3.tgz";
+      path = fetchurl {
+        name = "write___write_1.0.3.tgz";
+        url  = "https://registry.yarnpkg.com/write/-/write-1.0.3.tgz";
+        sha1 = "0800e14523b923a387e415123c865616aae0f5c3";
+      };
+    }
+    {
+      name = "ws___ws_5.2.3.tgz";
+      path = fetchurl {
+        name = "ws___ws_5.2.3.tgz";
+        url  = "https://registry.yarnpkg.com/ws/-/ws-5.2.3.tgz";
+        sha1 = "05541053414921bc29c63bee14b8b0dd50b07b3d";
+      };
+    }
+    {
+      name = "xml_name_validator___xml_name_validator_3.0.0.tgz";
+      path = fetchurl {
+        name = "xml_name_validator___xml_name_validator_3.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz";
+        sha1 = "6ae73e06de4d8c6e47f9fb181f78d648ad457c6a";
+      };
+    }
+    {
+      name = "xmlcreate___xmlcreate_2.0.3.tgz";
+      path = fetchurl {
+        name = "xmlcreate___xmlcreate_2.0.3.tgz";
+        url  = "https://registry.yarnpkg.com/xmlcreate/-/xmlcreate-2.0.3.tgz";
+        sha1 = "df9ecd518fd3890ab3548e1b811d040614993497";
+      };
+    }
+    {
+      name = "y18n___y18n_4.0.3.tgz";
+      path = fetchurl {
+        name = "y18n___y18n_4.0.3.tgz";
+        url  = "https://registry.yarnpkg.com/y18n/-/y18n-4.0.3.tgz";
+        sha1 = "b5f259c82cd6e336921efd7bfd8bf560de9eeedf";
+      };
+    }
+    {
+      name = "yallist___yallist_4.0.0.tgz";
+      path = fetchurl {
+        name = "yallist___yallist_4.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz";
+        sha1 = "9bb92790d9c0effec63be73519e11a35019a3a72";
+      };
+    }
+    {
+      name = "yargs_parser___yargs_parser_13.1.2.tgz";
+      path = fetchurl {
+        name = "yargs_parser___yargs_parser_13.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.1.2.tgz";
+        sha1 = "130f09702ebaeef2650d54ce6e3e5706f7a4fb38";
+      };
+    }
+    {
+      name = "yargs___yargs_13.3.2.tgz";
+      path = fetchurl {
+        name = "yargs___yargs_13.3.2.tgz";
+        url  = "https://registry.yarnpkg.com/yargs/-/yargs-13.3.2.tgz";
+        sha1 = "ad7ffefec1aa59565ac915f82dccb38a9c31a2dd";
+      };
+    }
+  ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/element/update-element-desktop.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/element/update-element-desktop.sh
new file mode 100755
index 000000000000..69d0d3d70728
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/element/update-element-desktop.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=../../../../../ -i bash -p wget yarn2nix
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates the Yarn dependency lock files for the element-desktop package."
+  echo "Usage: $0 <git release tag>"
+  exit 1
+fi
+
+RIOT_WEB_SRC="https://raw.githubusercontent.com/vector-im/element-desktop/$1"
+
+wget "$RIOT_WEB_SRC/package.json" -O element-desktop-package.json
+wget "$RIOT_WEB_SRC/yarn.lock" -O element-desktop-yarndeps.lock
+yarn2nix --lockfile=element-desktop-yarndeps.lock > element-desktop-yarndeps.nix
+rm element-desktop-yarndeps.lock
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ferdi/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ferdi/default.nix
new file mode 100644
index 000000000000..1b6bcd6758f8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ferdi/default.nix
@@ -0,0 +1,34 @@
+{ lib, mkFranzDerivation, fetchurl, xorg, xdg-utils, buildEnv, writeShellScriptBin }:
+
+let
+  mkFranzDerivation' = mkFranzDerivation.override {
+    xdg-utils = buildEnv {
+      name = "xdg-utils-for-ferdi";
+      paths = [
+        xdg-utils
+        (lib.hiPrio (writeShellScriptBin "xdg-open" ''
+          unset GDK_BACKEND
+          exec ${xdg-utils}/bin/xdg-open "$@"
+        ''))
+      ];
+    };
+  };
+in
+mkFranzDerivation' rec {
+  pname = "ferdi";
+  name = "Ferdi";
+  version = "5.6.0";
+  src = fetchurl {
+    url = "https://github.com/getferdi/ferdi/releases/download/v${version}/ferdi_${version}_amd64.deb";
+    sha256 = "sha256-yaAYNQAvbtArw9qAtbTDD11a9nH2OQEPE8QLg1E79Yc=";
+  };
+  extraBuildInputs = [ xorg.libxshmfence ];
+  meta = with lib; {
+    description = "Combine your favorite messaging services into one application";
+    homepage = "https://getferdi.com/";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ davidtwco ma27 ];
+    platforms = [ "x86_64-linux" ];
+    hydraPlatforms = [ ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/fractal/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/fractal/default.nix
new file mode 100644
index 000000000000..d957daced26d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/fractal/default.nix
@@ -0,0 +1,93 @@
+{ lib, stdenv
+, fetchFromGitLab
+, nix-update-script
+, meson
+, ninja
+, gettext
+, python3
+, rustPlatform
+, pkg-config
+, gtksourceview4
+, glib
+, libhandy_0
+, gtk3
+, dbus
+, openssl
+, sqlite
+, gst_all_1
+, cairo
+, gdk-pixbuf
+, gspell
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "fractal";
+  version = "4.4.0";
+
+  src = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "GNOME";
+    repo = "fractal";
+    rev = version;
+    sha256 = "DSNVd9YvI7Dd3s3+M0+wE594tmL1yPNMnD1W9wLhSuw=";
+  };
+
+  cargoDeps = rustPlatform.fetchCargoTarball {
+    inherit src;
+    name = "${pname}-${version}";
+    hash = "sha256-xim5sOzeXJjRXbTOg2Gk/LHU0LioiyMK5nSr1LwMPjc=";
+  };
+
+  nativeBuildInputs = [
+    gettext
+    meson
+    ninja
+    pkg-config
+    python3
+    rustPlatform.rust.cargo
+    rustPlatform.cargoSetupHook
+    rustPlatform.rust.rustc
+    wrapGAppsHook
+    glib
+  ];
+
+  buildInputs = [
+    cairo
+    dbus
+    gdk-pixbuf
+    glib
+    gspell
+    gst_all_1.gst-editing-services
+    gst_all_1.gst-plugins-bad
+    gst_all_1.gst-plugins-base
+    (gst_all_1.gst-plugins-good.override {
+      gtkSupport = true;
+    })
+    gst_all_1.gstreamer
+    gst_all_1.gst-devtools
+    gtk3
+    gtksourceview4
+    libhandy_0
+    openssl
+    sqlite
+  ];
+
+  postPatch = ''
+    chmod +x scripts/test.sh
+    patchShebangs scripts/meson_post_install.py scripts/test.sh
+  '';
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  meta = with lib; {
+    description = "Matrix group messaging app";
+    homepage = "https://gitlab.gnome.org/GNOME/fractal";
+    license = licenses.gpl3;
+    maintainers = teams.gnome.members ++ (with maintainers; [ dtzWill ]);
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/franz/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/franz/default.nix
new file mode 100644
index 000000000000..9f772bf3f6d7
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/franz/default.nix
@@ -0,0 +1,19 @@
+{ lib, mkFranzDerivation, fetchurl }:
+
+mkFranzDerivation rec {
+  pname = "franz";
+  name = "Franz";
+  version = "5.6.1";
+  src = fetchurl {
+    url = "https://github.com/meetfranz/franz/releases/download/v${version}/franz_${version}_amd64.deb";
+    sha256 = "1gn0n1hr6z2gsdnpxysyq6sm8y7cjr9jafhsam8ffw0bq74kph7p";
+  };
+  meta = with lib; {
+    description = "A free messaging app that combines chat & messaging services into one application";
+    homepage = "https://meetfranz.com";
+    license = licenses.free;
+    maintainers = [ maintainers.davidtwco ];
+    platforms = [ "x86_64-linux" ];
+    hydraPlatforms = [ ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/franz/generic.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/franz/generic.nix
new file mode 100644
index 000000000000..d63318ecfaf7
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/franz/generic.nix
@@ -0,0 +1,94 @@
+{ stdenv
+, lib
+, makeWrapper
+, wrapGAppsHook
+, autoPatchelfHook
+, dpkg
+, xorg
+, atk
+, glib
+, pango
+, gdk-pixbuf
+, cairo
+, freetype
+, fontconfig
+, gtk3
+, gnome2
+, dbus
+, nss
+, nspr
+, alsa-lib
+, cups
+, expat
+, udev
+, libnotify
+, xdg-utils
+, mesa
+}:
+
+# Helper function for building a derivation for Franz and forks.
+
+{ pname, name, version, src, meta, extraBuildInputs ? [] }:
+
+stdenv.mkDerivation rec {
+  inherit pname version src meta;
+
+  # Don't remove runtime deps.
+  dontPatchELF = true;
+
+  nativeBuildInputs = [ autoPatchelfHook makeWrapper wrapGAppsHook dpkg ];
+  buildInputs = extraBuildInputs ++ (with xorg; [
+    libXi
+    libXcursor
+    libXdamage
+    libXrandr
+    libXcomposite
+    libXext
+    libXfixes
+    libXrender
+    libX11
+    libXtst
+    libXScrnSaver
+  ]) ++ [
+    mesa #libgbm
+    gtk3
+    atk
+    glib
+    pango
+    gdk-pixbuf
+    cairo
+    freetype
+    fontconfig
+    dbus
+    gnome2.GConf
+    nss
+    nspr
+    alsa-lib
+    cups
+    expat
+    stdenv.cc.cc
+  ];
+  runtimeDependencies = [ stdenv.cc.cc.lib (lib.getLib udev) libnotify ];
+
+  unpackPhase = "dpkg-deb -x $src .";
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -r opt $out
+    ln -s $out/opt/${name}/${pname} $out/bin
+
+    # Provide desktop item and icon.
+    cp -r usr/share $out
+    substituteInPlace $out/share/applications/${pname}.desktop \
+      --replace /opt/${name}/${pname} ${pname}
+  '';
+
+  dontWrapGApps = true;
+
+  postFixup = ''
+    wrapProgram $out/opt/${name}/${pname} \
+      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath runtimeDependencies}" \
+      --prefix PATH : ${xdg-utils}/bin \
+      "''${gappsWrapperArgs[@]}"
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/freetalk/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/freetalk/default.nix
new file mode 100644
index 000000000000..4c28e346a124
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/freetalk/default.nix
@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchFromGitHub
+, guile, pkg-config, glib, loudmouth, gmp, libidn, readline, libtool
+, libunwind, ncurses, curl, jansson, texinfo
+, automake, autoconf }:
+stdenv.mkDerivation rec {
+  pname = "freetalk";
+  version = "4.1";
+
+  src = fetchFromGitHub {
+    owner = "GNUFreetalk";
+    repo = "freetalk";
+    rev = "v${version}";
+    sha256 = "09jwk2i8qd8c7wrn9xbqcwm32720dwxis22kf3jpbg8mn6w6i757";
+  };
+
+  preConfigure = ''
+    ./autogen.sh
+  '';
+
+  nativeBuildInputs = [ pkg-config texinfo autoconf automake ];
+  buildInputs = [
+    guile glib loudmouth gmp libidn readline libtool
+    libunwind ncurses curl jansson
+  ];
+
+  meta = with lib; {
+    description =  "Console XMPP client";
+    license = licenses.gpl3Plus ;
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.linux;
+    downloadPage = "https://www.gnu.org/software/freetalk/";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/gajim/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/gajim/default.nix
new file mode 100644
index 000000000000..ced3dcf5fe48
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/gajim/default.nix
@@ -0,0 +1,80 @@
+{ lib, fetchurl, gettext, wrapGAppsHook
+
+# Native dependencies
+, python3, gtk3, gobject-introspection, gnome
+, glib-networking
+
+# Test dependencies
+, xvfb-run, dbus
+
+# Optional dependencies
+, enableJingle ? true, farstream, gstreamer, gst-plugins-base, gst-libav, gst-plugins-good, libnice
+, enableE2E ? true
+, enableSecrets ? true, libsecret
+, enableRST ? true, docutils
+, enableSpelling ? true, gspell
+, enableUPnP ? true, gupnp-igd
+, enableOmemoPluginDependencies ? true
+, enableAppIndicator ? true, libappindicator-gtk3
+, extraPythonPackages ? ps: []
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "gajim";
+  version = "1.3.2";
+
+  src = fetchurl {
+    url = "https://gajim.org/downloads/${lib.versions.majorMinor version}/gajim-${version}.tar.gz";
+    sha256 = "1vjzv8zg9s393xw81klcgbkn4h6j2blzla9iil5kqfrw7wmldskh";
+  };
+
+  buildInputs = [
+    gobject-introspection gtk3 gnome.adwaita-icon-theme
+    glib-networking
+  ] ++ lib.optionals enableJingle [ farstream gstreamer gst-plugins-base gst-libav gst-plugins-good libnice ]
+    ++ lib.optional enableSecrets libsecret
+    ++ lib.optional enableSpelling gspell
+    ++ lib.optional enableUPnP gupnp-igd
+    ++ lib.optional enableAppIndicator libappindicator-gtk3;
+
+  nativeBuildInputs = [
+    gettext wrapGAppsHook
+  ];
+
+  dontWrapGApps = true;
+
+  preFixup = ''
+    makeWrapperArgs+=("''${gappsWrapperArgs[@]}")
+  '';
+
+  propagatedBuildInputs = with python3.pkgs; [
+    nbxmpp pygobject3 dbus-python pillow css-parser precis-i18n keyring setuptools
+  ] ++ lib.optionals enableE2E [ pycrypto python-gnupg ]
+    ++ lib.optional enableRST docutils
+    ++ lib.optionals enableOmemoPluginDependencies [ python-axolotl qrcode ]
+    ++ extraPythonPackages python3.pkgs;
+
+  checkInputs = [ xvfb-run dbus.daemon ];
+
+  checkPhase = ''
+    # https://dev.gajim.org/gajim/gajim/-/issues/10478
+    rm test/lib/gajim_mocks.py test/unit/test_gui_interface.py
+
+    xvfb-run dbus-run-session \
+      --config-file=${dbus.daemon}/share/dbus-1/session.conf \
+      ${python3.interpreter} setup.py test
+  '';
+
+  # necessary for wrapGAppsHook
+  strictDeps = false;
+
+  meta = {
+    homepage = "http://gajim.org/";
+    description = "Jabber client written in PyGTK";
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [ raskin abbradar ];
+    downloadPage = "http://gajim.org/downloads.php";
+    updateWalker = true;
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/gitter/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/gitter/default.nix
new file mode 100644
index 000000000000..854cc18a47ff
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/gitter/default.nix
@@ -0,0 +1,102 @@
+{ lib, stdenv, alsa-lib, atk, at-spi2-core, cairo, cups, dbus, dpkg, expat, fetchurl
+, fontconfig, freetype, gdk-pixbuf, glib, gnome2, gtk3,  libdrm, libX11
+, libXScrnSaver, libXcomposite, libXcursor, libXdamage, libXext, libXfixes
+, libXi, libXrandr, libXrender, libXtst, libappindicator-gtk3, libcxx
+, libnotify, libpulseaudio, libxcb, makeDesktopItem, makeWrapper, mesa, nspr, nss
+, pango, systemd }:
+
+let gitterDirectorySuffix = "opt/gitter";
+   libPath = lib.makeLibraryPath [
+     alsa-lib
+     atk
+     at-spi2-core
+     cairo
+     cups
+     dbus
+     expat
+     fontconfig
+     freetype
+     gdk-pixbuf
+     glib
+     gnome2.GConf
+     gtk3
+     libX11
+     libXScrnSaver
+     libXcomposite
+     libXcursor
+     libXdamage
+     libXext
+     libXfixes
+     libXi
+     libXrandr
+     libXrender
+     libXtst
+     libappindicator-gtk3
+     libcxx
+     libdrm
+     libnotify
+     libpulseaudio
+     libxcb
+     mesa
+     nspr
+     nss
+     pango
+     stdenv.cc.cc
+     systemd
+  ];
+    doELFPatch = target: ''
+      patchelf --set-interpreter ${stdenv.cc.bintools.dynamicLinker} \
+         --set-rpath "$out/${gitterDirectorySuffix}/lib:${libPath}" \
+         $out/${gitterDirectorySuffix}/${target}
+       '';
+in stdenv.mkDerivation rec {
+  pname = "gitter";
+  version = "5.0.1";
+
+  src = fetchurl {
+    url = "https://update.gitter.im/linux64/${pname}_${version}_amd64.deb";
+    sha256 = "1ps9akylqrril4902r8mi0mprm0hb5wra51ry6c1rb5xz5nrzgh1";
+  };
+
+  nativeBuildInputs = [ makeWrapper dpkg ];
+
+  unpackPhase = "dpkg -x $src .";
+
+  installPhase = ''
+    mkdir -p $out/{bin,opt/gitter,share/pixmaps}
+    mv ./opt/Gitter/linux64/* $out/opt/gitter
+
+    ${doELFPatch "Gitter"}
+    ${doELFPatch "nacl_helper"}
+    ${doELFPatch "minidump_stackwalk"}
+    ${doELFPatch "nwjc"}
+    ${doELFPatch "chromedriver"}
+    ${doELFPatch "payload"}
+
+    patchelf --set-rpath "$out/${gitterDirectorySuffix}/lib:${libPath}" \
+         $out/${gitterDirectorySuffix}/lib/libnw.so
+
+    wrapProgram $out/${gitterDirectorySuffix}/Gitter --prefix LD_LIBRARY_PATH : ${libPath}
+
+    ln -s $out/${gitterDirectorySuffix}/Gitter $out/bin/
+    ln -s $out/${gitterDirectorySuffix}/logo.png $out/share/pixmaps/gitter.png
+    ln -s "${desktopItem}/share/applications" $out/share/
+  '';
+
+  desktopItem = makeDesktopItem {
+    name = pname;
+    exec = "Gitter";
+    icon = pname;
+    desktopName = "Gitter";
+    genericName = meta.description;
+    categories = "Network;InstantMessaging;";
+  };
+
+  meta = with lib; {
+    description = "Where developers come to talk";
+    downloadPage = "https://gitter.im/apps";
+    license = licenses.mit;
+    maintainers = [ maintainers.imalison ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/go-neb/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/go-neb/default.nix
new file mode 100644
index 000000000000..e554f631920b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/go-neb/default.nix
@@ -0,0 +1,29 @@
+{ lib, buildGoModule, fetchFromGitHub, nixosTests, olm }:
+
+buildGoModule {
+  pname = "go-neb";
+  version = "unstable-2021-07-21";
+  src = fetchFromGitHub {
+    owner = "matrix-org";
+    repo = "go-neb";
+    rev = "8916c80f8ce1732f64b50f9251242ca189082e76";
+    sha256 = "sha256-kuH4vbvS4G1bczxUdY4bd4oL4pIZzuueUxdEp4xuzJM=";
+  };
+
+  subPackages = [ "." ];
+
+  buildInputs = [ olm ];
+
+  vendorSha256 = "sha256-5Vg7aUkqiFIQuxmsDOJjvXoeA5NjMoBoD0XBhC+o4GA=";
+
+  doCheck = false;
+
+  passthru.tests.go-neb = nixosTests.go-neb;
+
+  meta = with lib; {
+    description = "Extensible matrix bot written in Go";
+    homepage = "https://github.com/matrix-org/go-neb";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ hexa maralorn ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/default.nix
new file mode 100644
index 000000000000..0fea57ea9cc7
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/default.nix
@@ -0,0 +1,62 @@
+{ lib
+, stdenv
+, substituteAll
+, buildGoModule
+, fetchFromGitHub
+, makeDesktopItem
+, makeWrapper
+, libnotify
+, olm
+, pulseaudio
+, sound-theme-freedesktop
+}:
+
+buildGoModule rec {
+  pname = "gomuks";
+  version = "0.2.3";
+
+  src = fetchFromGitHub {
+    owner = "tulir";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0g0aa6h6bm00mdgkb38wm66rcrhqfvs2xj9rl04bwprsa05q5lca";
+  };
+
+  vendorSha256 = "14ya5advpv4q5il235h5dxy8c2ap2yzrvqs0sjqgw0v1vm6vpwdx";
+
+  doCheck = false;
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ olm ];
+
+  # Upstream issue: https://github.com/tulir/gomuks/issues/260
+  patches = lib.optional stdenv.isLinux (substituteAll {
+    src = ./hardcoded_path.patch;
+    soundTheme = sound-theme-freedesktop;
+  });
+
+  postInstall = ''
+    cp -r ${
+      makeDesktopItem {
+        name = "net.maunium.gomuks.desktop";
+        exec = "@out@/bin/gomuks";
+        terminal = "true";
+        desktopName = "Gomuks";
+        genericName = "Matrix client";
+        categories = "Network;Chat";
+        comment = meta.description;
+      }
+    }/* $out/
+    substituteAllInPlace $out/share/applications/*
+    wrapProgram $out/bin/gomuks \
+      --prefix PATH : "${lib.makeBinPath (lib.optionals stdenv.isLinux [ libnotify pulseaudio ])}"
+  '';
+
+  meta = with lib; {
+    homepage = "https://maunium.net/go/gomuks/";
+    description = "A terminal based Matrix client written in Go";
+    license = licenses.agpl3Plus;
+    maintainers = with maintainers; [ chvp emily ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/hardcoded_path.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/hardcoded_path.patch
new file mode 100644
index 000000000000..0e0d4e28b0a1
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/gomuks/hardcoded_path.patch
@@ -0,0 +1,13 @@
+diff --git a/lib/notification/notify_linux.go b/lib/notification/notify_linux.go
+index f93a95f..da6a61d 100644
+--- a/lib/notification/notify_linux.go
++++ b/lib/notification/notify_linux.go
+@@ -32,7 +32,7 @@ func Send(title, text string, critical, sound bool) error {
+ 		if critical {
+ 			soundName = "complete"
+ 		}
+-		exec.Command("paplay", "/usr/share/sounds/freedesktop/stereo/"+soundName+".oga").Run()
++		exec.Command("paplay", "@soundTheme@/share/sounds/freedesktop/stereo/"+soundName+".oga").Run()
+ 	}
+ 	return exec.Command("notify-send", args...).Run()
+ }
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/gtmess/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/gtmess/default.nix
new file mode 100644
index 000000000000..3474e5729316
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/gtmess/default.nix
@@ -0,0 +1,20 @@
+{lib, stdenv, fetchurl, ncurses, openssl, tcl, tk}:
+
+stdenv.mkDerivation rec {
+  pname = "gtmess";
+  version = "0.97";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/gtmess/gtmess-${version}.tar.gz";
+    sha256 = "1ipmqsrj0r1ssbgs2fpr4x5vnzlxlqhx9jrnadp1jw7s0sxpjqv0";
+  };
+
+  buildInputs = [ ncurses openssl tcl tk];
+
+  meta = {
+    description = "Console MSN Messenger client for Linux and other unix systems";
+    homepage = "http://gtmess.sourceforge.net/";
+    license = lib.licenses.gpl2Plus;
+    platforms = with lib.platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/hipchat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/hipchat/default.nix
new file mode 100644
index 000000000000..6a677c9e0d61
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/hipchat/default.nix
@@ -0,0 +1,88 @@
+{ lib, stdenv, fetchurl, xorg, freetype, fontconfig, openssl, glib, nss, nspr, expat
+, alsa-lib, dbus, zlib, libxml2, libxslt, makeWrapper, xkeyboard_config, systemd
+, libGL, xcbutilkeysyms, xdg-utils, libtool }:
+
+let
+  version = "4.30.5.1682";
+
+  rpath = lib.makeLibraryPath [
+    xdg-utils
+    xorg.libXext
+    xorg.libSM
+    xorg.libICE
+    xorg.libX11
+    xorg.libXrandr
+    xorg.libXdamage
+    xorg.libXrender
+    xorg.libXfixes
+    xorg.libXcomposite
+    xorg.libXcursor
+    xorg.libxcb
+    xorg.libXi
+    xorg.libXScrnSaver
+    xorg.libXtst
+    freetype
+    fontconfig
+    openssl
+    glib
+    nss
+    nspr
+    dbus
+    alsa-lib
+    zlib
+    libtool
+    libxml2
+    libxslt
+    expat
+    xcbutilkeysyms
+    systemd
+    libGL
+  ] + ":${stdenv.cc.cc.lib}/lib64";
+in stdenv.mkDerivation {
+  pname = "hipchat";
+  inherit version;
+
+  src = fetchurl {
+    url = "https://atlassian.artifactoryonline.com/artifactory/hipchat-apt-client/pool/HipChat4-${version}-Linux.deb";
+    sha256 = "03pz8wskafn848yvciq29kwdvqcgjrk6sjnm8nk9acl89xf0sn96";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  buildCommand = ''
+    ar x $src
+    tar xfvz data.tar.gz
+
+    mkdir -p $out/libexec/hipchat
+    d=$out/libexec/hipchat/lib
+    mv opt/HipChat4/* $out/libexec/hipchat/
+    mv usr/share $out
+
+    for file in $(find $d -type f); do
+        patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $file || true
+        patchelf --set-rpath ${rpath}:$out/libexec/hipchat/lib:\$ORIGIN $file || true
+    done
+
+    patchShebangs $d/linuxbrowserlaunch.sh
+
+    substituteInPlace $out/share/applications/hipchat4.desktop \
+      --replace /opt/HipChat4/bin/HipChat4 $out/bin/hipchat
+
+    makeWrapper $d/HipChat.bin $out/bin/hipchat \
+      --run 'export HIPCHAT_LD_LIBRARY_PATH=$LD_LIBRARY_PATH' \
+      --run 'export HIPCHAT_QT_PLUGIN_PATH=$QT_PLUGIN_PATH' \
+      --set QT_XKB_CONFIG_ROOT ${xkeyboard_config}/share/X11/xkb \
+      --set QTWEBENGINEPROCESS_PATH $d/QtWebEngineProcess
+
+    makeWrapper $d/QtWebEngineProcess.bin $d/QtWebEngineProcess \
+      --set QT_PLUGIN_PATH "$d/plugins"
+  '';
+
+  meta = with lib; {
+    description = "Desktop client for HipChat services";
+    homepage = "http://www.hipchat.com";
+    license = licenses.unfree;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ puffnfresh ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/jackline/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/jackline/default.nix
new file mode 100644
index 000000000000..89d4931a2fe4
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/jackline/default.nix
@@ -0,0 +1,53 @@
+{ lib, fetchFromGitHub, ocamlPackages }:
+
+with ocamlPackages;
+
+buildDunePackage rec {
+  pname = "jackline";
+  version = "unstable-2021-04-23";
+
+  minimumOCamlVersion = "4.08";
+
+  useDune2 = true;
+
+  src = fetchFromGitHub {
+    owner  = "hannesm";
+    repo   = "jackline";
+    rev    = "861c59bb7cd27ad5c7558ff94cb0d0e8dca249e5";
+    sha256 = "00waw5qr0n70i9l9b25r9ryfi836x4qrj046bb4k9qa4d0p8q1sa";
+  };
+
+  nativeBuildInpts = [
+    ppx_sexp_conv
+    ppx_deriving
+  ];
+
+  buildInputs = [
+    erm_xmpp
+    tls
+    mirage-crypto-pk
+    x509
+    domain-name
+    ocaml_lwt
+    otr
+    astring
+    ptime
+    notty
+    sexplib
+    hex
+    uutf
+    uchar
+    uuseg
+    uucp
+    dns-client
+    cstruct
+    base64
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/hannesm/jackline";
+    description = "minimalistic secure XMPP client in OCaml";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ sternenseemann ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix
new file mode 100644
index 000000000000..149be3686e85
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix
@@ -0,0 +1,58 @@
+{ lib, stdenv
+, fetchurl
+, appimageTools
+, makeWrapper
+, electron
+, xorg
+}:
+
+stdenv.mkDerivation rec {
+  pname = "jitsi-meet-electron";
+  version = "2.8.11";
+
+  src = fetchurl {
+    url = "https://github.com/jitsi/jitsi-meet-electron/releases/download/v${version}/jitsi-meet-x86_64.AppImage";
+    sha256 = "sha256-DznbSwA1UISw3EkIfM5hGgmIToeXsH1b1HB7UOgDTKU=";
+    name = "${pname}-${version}.AppImage";
+  };
+
+  appimageContents = appimageTools.extractType2 {
+    name = "${pname}-${version}";
+    inherit src;
+  };
+
+  dontUnpack = true;
+  dontConfigure = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin $out/share/${pname} $out/share/applications
+
+    cp -a ${appimageContents}/{locales,resources} $out/share/${pname}
+    cp -a ${appimageContents}/jitsi-meet.desktop $out/share/applications/${pname}.desktop
+    cp -a ${appimageContents}/usr/share/icons $out/share
+
+    substituteInPlace $out/share/applications/${pname}.desktop \
+      --replace 'Exec=AppRun' 'Exec=${pname}'
+
+    runHook postInstall
+  '';
+
+  postFixup = ''
+    makeWrapper ${electron}/bin/electron $out/bin/${pname} \
+      --add-flags $out/share/${pname}/resources/app.asar \
+      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ stdenv.cc.cc xorg.libXtst ]}"
+  '';
+
+  meta = with lib; {
+    description = "Jitsi Meet desktop application powered by Electron";
+    homepage = "https://github.com/jitsi/jitsi-meet-electron";
+    license = licenses.asl20;
+    maintainers = teams.jitsi.members;
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/default.nix
new file mode 100644
index 000000000000..e2ace1a5d35f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/default.nix
@@ -0,0 +1,72 @@
+{ stdenv, lib, fetchurl, makeDesktopItem, unzip, ant, jdk8
+# Optional, Jitsi still runs without, but you may pass null:
+, alsa-lib, dbus, gtk2, libpulseaudio, openssl, xorg
+}:
+
+let jdk = jdk8; in
+stdenv.mkDerivation rec {
+  pname = "jitsi";
+  version = "2.10.5550";
+
+  src = fetchurl {
+    url = "https://download.jitsi.org/jitsi/src/jitsi-src-${version}.zip";
+    sha256 = "11vjchc3dnzj55x7c62wsm6masvwmij1ifkds917r1qvil1nzz6d";
+  };
+
+  patches = [ ./jitsi.patch ];
+
+  jitsiItem = makeDesktopItem {
+    name = "Jitsi";
+    exec = "jitsi";
+    comment = "VoIP and Instant Messaging client";
+    desktopName = "Jitsi";
+    genericName = "Instant Messaging";
+    categories = "Chat";
+  };
+
+  libPath = lib.makeLibraryPath ([
+    stdenv.cc.cc  # For libstdc++.
+    alsa-lib
+    dbus
+    gtk2
+    libpulseaudio
+    openssl
+    xorg.libX11
+    xorg.libXext
+    xorg.libXScrnSaver
+    xorg.libXv
+  ]);
+
+  nativeBuildInputs = [ unzip ];
+  buildInputs = [ ant jdk ];
+
+  buildPhase = "ant make";
+
+  installPhase = ''
+    mkdir -p $out
+    cp -a lib $out/
+    rm -rf $out/lib/native/solaris
+    cp -a sc-bundles $out/
+    mkdir $out/bin
+    cp resources/install/generic/run.sh $out/bin/jitsi
+    chmod +x $out/bin/jitsi
+    substituteInPlace $out/bin/jitsi \
+      --subst-var-by JAVA ${jdk}/bin/java \
+      --subst-var-by EXTRALIBS ${gtk2.out}/lib
+    sed -e 's,^java\ ,${jdk}/bin/java ,' -i $out/bin/jitsi
+    patchShebangs $out
+    libPath="$libPath:${jdk.home}/lib/${jdk.architecture}"
+    find $out/ -type f -name '*.so' | while read file; do
+      patchelf --set-rpath "$libPath" "$file" && \
+          patchelf --shrink-rpath "$file"
+    done
+  '';
+
+  meta = with lib; {
+    homepage = "https://jitsi.org/";
+    description = "Open Source Video Calls and Chat";
+    license = licenses.lgpl21Plus;
+    platforms = platforms.linux;
+    maintainers = teams.jitsi.members;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/jitsi.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/jitsi.patch
new file mode 100644
index 000000000000..07b16b919962
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/jitsi/jitsi.patch
@@ -0,0 +1,27 @@
+--- /home/dario/Downloads/jitsi/resources/install/generic/run.sh	2013-11-01 15:37:21.000000000 +0000
++++ jitsi/resources/install/generic/run.sh	2014-03-04 11:52:30.796397567 +0000
+@@ -1,4 +1,9 @@
+-mkdir -p $HOME/.sip-communicator/log
++#! /bin/bash
++# A modified version of the generic run.sh
++
++#mkdir -p $HOME/.sip-communicator/log
++
++cd "$(dirname "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")")"
+
+ # Get architecture
+ ARCH=`uname -m | sed -e s/x86_64/64/ -e s/i.86/32/`
+@@ -6,10 +11,12 @@
+ # Additionnal JVM arguments
+ CLIENTARGS=""
+
++NATIVELIBS="lib/native/linux-64"
+ if [ $ARCH = 32 ]
+ then
+     CLIENTARGS="-client -Xmx256m"
++    NATIVELIBS="lib/native/linux"
+ fi
+
+ export PATH=$PATH:native
+-java $CLIENTARGS -classpath "lib/felix.jar:sc-bundles/sc-launcher.jar:sc-bundles/util.jar:lib/" -Djava.library.path=native -Dfelix.config.properties=file:./lib/felix.client.run.properties -Djava.util.logging.config.file=lib/logging.properties net.java.sip.communicator.launcher.SIPCommunicator
++LD_LIBRARY_PATH=@EXTRALIBS@ exec @JAVA@ $CLIENTARGS -classpath "lib/felix.jar:sc-bundles/sc-launcher.jar:sc-bundles/util.jar:lib/" -Djava.library.path=$NATIVELIBS -Dfelix.config.properties=file:lib/felix.client.run.properties -Djava.util.logging.config.file=lib/logging.properties net.java.sip.communicator.launcher.SIPCommunicator
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/kaidan/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/kaidan/default.nix
new file mode 100644
index 000000000000..74449ae705e3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/kaidan/default.nix
@@ -0,0 +1,62 @@
+{ mkDerivation
+, lib
+, fetchFromGitLab
+, cmake
+, extra-cmake-modules
+, pkg-config
+, qtquickcontrols2
+, qtmultimedia
+, qtlocation
+, qqc2-desktop-style
+, kirigami2
+, knotifications
+, zxing-cpp
+, qxmpp
+, gst_all_1
+}:
+
+mkDerivation rec {
+  pname = "kaidan";
+  version = "0.8.0";
+
+  src = fetchFromGitLab {
+    domain = "invent.kde.org";
+    owner = "network";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "070njci5zyzahmz3nqyp660chxnqx1mxp31w17syfllvrw403qmg";
+  };
+
+  nativeBuildInputs = [ cmake extra-cmake-modules pkg-config ];
+
+  buildInputs = with gst_all_1; [
+    qtquickcontrols2
+    qtmultimedia
+    qtlocation
+    qqc2-desktop-style
+    kirigami2
+    knotifications
+    zxing-cpp
+    qxmpp
+    gstreamer
+    gst-plugins-bad
+    gst-plugins-base
+    gst-plugins-good
+  ];
+  postInstall = ''
+    qtWrapperArgs+=(--prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0")
+  '';
+
+  meta = with lib; {
+    description = "User-friendly and modern chat app, using XMPP";
+    homepage = "https://www.kaidan.im";
+    license = with licenses; [
+      gpl3Plus
+      mit
+      asl20
+      cc-by-sa-40
+    ];
+    maintainers = with maintainers; [ astro ];
+    platforms = with platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/kdeltachat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/kdeltachat/default.nix
new file mode 100644
index 000000000000..eda47b56b796
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/kdeltachat/default.nix
@@ -0,0 +1,54 @@
+{ lib
+, mkDerivation
+, fetchFromGitHub
+, fetchFromSourcehut
+, cmake
+, extra-cmake-modules
+, pkg-config
+, kirigami2
+, libdeltachat
+, qtbase
+, qtimageformats
+, qtmultimedia
+, qtwebengine
+}:
+
+mkDerivation rec {
+  pname = "kdeltachat";
+  version = "unstable-2021-08-28";
+
+  src = fetchFromSourcehut {
+    owner = "~link2xt";
+    repo = "kdeltachat";
+    rev = "4d051bc35611fa5b75865769df7a512d90a13c65";
+    sha256 = "1p8pb3pwgvxy5bvr6by54f1f62imdlddy2mk52qxcvrx8f833bml";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    extra-cmake-modules
+    pkg-config
+  ];
+
+  buildInputs = [
+    kirigami2
+    libdeltachat
+    qtimageformats
+    qtmultimedia
+    qtwebengine
+  ];
+
+  # needed for qmlplugindump to work
+  QT_PLUGIN_PATH = "${qtbase.bin}/${qtbase.qtPluginPrefix}";
+  QML2_IMPORT_PATH = lib.concatMapStringsSep ":"
+    (lib: "${lib}/${qtbase.qtQmlPrefix}")
+    [ kirigami2 qtmultimedia ];
+
+  meta = with lib; {
+    description = "Delta Chat client using Kirigami framework";
+    homepage = "https://git.sr.ht/~link2xt/kdeltachat";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ dotlambda ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/default.nix
new file mode 100644
index 000000000000..47ee2a68a51a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/default.nix
@@ -0,0 +1,186 @@
+{ bcg729
+, bctoolbox
+, bcunit
+, belcard
+, belle-sip
+, belr
+, bzrtp
+, cairo
+, cmake
+, cyrus_sasl
+, fetchFromGitLab
+, fetchurl
+, ffmpeg
+, gdk-pixbuf
+, glib
+, gnused
+, graphviz
+, gtk2
+, intltool
+, lib
+, libexosip
+, liblinphone
+, libmatroska
+, libnotify
+, libosip
+, libsoup
+, libupnp
+, libX11
+, libxml2
+, makeWrapper
+, mbedtls
+, mediastreamer
+, mediastreamer-openh264
+, minizip2
+, mkDerivation
+, openldap
+, ortp
+, pango
+, pkg-config
+, qtbase
+, qtgraphicaleffects
+, qtquickcontrols2
+, qttranslations
+, readline
+, speex
+, sqlite
+
+, udev
+, zlib
+}:
+
+mkDerivation rec {
+  pname = "linphone-desktop";
+  version = "4.2.5";
+
+  src = fetchFromGitLab {
+    domain = "gitlab.linphone.org";
+    owner = "public";
+    group = "BC";
+    repo = pname;
+    rev = version;
+    sha256 = "1gq4l9p21rbrcksa7fbkzn9fzbbynqmn6ni6lhnvzk359sb1xvbz";
+  };
+
+  patches = [
+    ./do-not-build-linphone-sdk.patch
+    ./remove-bc_compute_full_version-usage.patch
+  ];
+
+  # See: https://gitlab.linphone.org/BC/public/linphone-desktop/issues/21
+  postPatch = ''
+    echo "project(linphoneqt VERSION ${version})" >linphone-app/linphoneqt_version.cmake
+    substituteInPlace linphone-app/src/app/AppController.cpp \
+      --replace "LINPHONE_QT_GIT_VERSION" "\"${version}\""
+  '';
+
+  # TODO: After linphone-desktop and liblinphone split into separate packages,
+  # there might be some build inputs here that aren't needed for
+  # linphone-desktop.
+  buildInputs = [
+    bcg729
+    bctoolbox
+    belcard
+    belle-sip
+    belr
+    bzrtp
+    cairo
+    cyrus_sasl
+    ffmpeg
+    gdk-pixbuf
+    glib
+    gtk2
+    libX11
+    libexosip
+    liblinphone
+    libmatroska
+    libnotify
+    libosip
+    libsoup
+    libupnp
+    libxml2
+    mbedtls
+    mediastreamer
+    mediastreamer-openh264
+    minizip2
+    openldap
+    ortp
+    pango
+    qtbase
+    qtgraphicaleffects
+    qtquickcontrols2
+    qttranslations
+    readline
+    speex
+    sqlite
+    udev
+    zlib
+  ];
+
+  nativeBuildInputs = [
+    bcunit
+    cmake
+    gnused
+    graphviz
+    intltool
+    makeWrapper
+    pkg-config
+  ];
+
+  cmakeFlags = [
+    "-DCMAKE_BUILD_TYPE=RelWithDebInfo"
+    "-DMINIZIP_INCLUDE_DIRS=${minizip2}/include"
+    "-DMINIZIP_LIBRARIES=minizip"
+  ];
+
+  # The default install phase fails because the paths are somehow messed up in
+  # the makefiles. The errors were like:
+  #
+  #   CMake Error at cmake_builder/linphone_package/cmake_install.cmake:49 (file):
+  #     file INSTALL cannot find
+  #     "/build/linphone-desktop-.../build/linphone-sdk/desktop//nix/store/.../bin":
+  #     No such file or directory.
+  #
+  # If someone is able to figure out how to fix that, great. For now, just
+  # trying to pick all the relevant files to the output.
+  #
+  # Also, the exec path in linphone.desktop file remains invalid, pointing to
+  # the build directory, after the whole nix build process. So, let's use sed to
+  # manually fix that path.
+  #
+  # In order to find mediastreamer plugins, mediastreamer package was patched to
+  # support an environment variable pointing to the plugin directory. Set that
+  # environment variable by wrapping the Linphone executable.
+  #
+  # Also, some grammar files needed to be copied too from some dependencies. I
+  # suppose if one define a dependency in such a way that its share directory is
+  # found, then this copying would be unnecessary. These missing grammar files
+  # were discovered when linphone crashed at startup and it was run with
+  # --verbose flag. Instead of actually copying these files, create symlinks.
+  #
+  # It is quite likely that there are some other files still missing and
+  # Linphone will randomly crash when it tries to access those files. Then,
+  # those just need to be copied manually below.
+  installPhase = ''
+    mkdir -p $out/bin
+    cp linphone-app/linphone $out/bin/
+    wrapProgram $out/bin/linphone \
+      --set MEDIASTREAMER_PLUGINS_DIR \
+            ${mediastreamer-openh264}/lib/mediastreamer/plugins
+    mkdir -p $out/share/applications
+    cp linphone-app/linphone.desktop $out/share/applications/
+    cp -r ../linphone-app/assets/icons $out/share/
+    mkdir -p $out/share/belr/grammars
+    ln -s ${liblinphone}/share/belr/grammars/* $out/share/belr/grammars/
+    mkdir -p $out/share/linphone
+    ln -s ${liblinphone}/share/linphone/* $out/share/linphone/
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.linphone.org/";
+    description = "Open source SIP phone for voice/video calls and instant messaging";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ jluttine ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/do-not-build-linphone-sdk.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/do-not-build-linphone-sdk.patch
new file mode 100644
index 000000000000..fe774a479fac
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/do-not-build-linphone-sdk.patch
@@ -0,0 +1,118 @@
+From 08b8b1811a1ad079fa713d19a8cc6bf2dc782bb7 Mon Sep 17 00:00:00 2001
+From: David P <megver83@parabola.nu>
+Date: Thu, 26 Nov 2020 15:56:30 -0300
+Subject: [PATCH 1/2] do not build linphone-sdk
+
+Signed-off-by: David P <megver83@parabola.nu>
+---
+ CMakeLists.txt                                | 61 +------------------
+ .../cmake_builder/additional_steps.cmake      |  9 ---
+ 2 files changed, 3 insertions(+), 67 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index f7eb05f2..5921ee5b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -118,7 +118,6 @@ list(APPEND APP_OPTIONS "-DENABLE_RELATIVE_PREFIX=${ENABLE_RELATIVE_PREFIX}")
+ 
+ list(APPEND APP_OPTIONS "-DLINPHONE_OUTPUT_DIR=${LINPHONE_OUTPUT_DIR}")
+ 
+-include(ExternalProject)
+ set(PROJECT_BUILD_COMMAND "")
+ if(CMAKE_BUILD_PARALLEL_LEVEL)
+ 	list(APPEND APP_OPTIONS "-DCMAKE_BUILD_PARALLEL_LEVEL=${CMAKE_BUILD_PARALLEL_LEVEL}")
+@@ -136,29 +135,8 @@ if(UNIX AND NOT APPLE)
+ 	set(CMAKE_INSTALL_RPATH "$ORIGIN:$ORIGIN/lib64:$ORIGIN/../lib64:$ORIGIN/lib:$ORIGIN/../lib:${LINPHONE_OUTPUT_DIR}/${CMAKE_INSTALL_LIBDIR}")
+ 	list(APPEND APP_OPTIONS "-DCMAKE_INSTALL_RPATH=${CMAKE_INSTALL_RPATH}")
+ endif()
+-ExternalProject_Add(sdk PREFIX "${CMAKE_BINARY_DIR}/sdk"
+-    SOURCE_DIR "${CMAKE_SOURCE_DIR}/linphone-sdk"
+-    INSTALL_DIR "${LINPHONE_OUTPUT_DIR}"
+-    STAMP_DIR "${SDK_BUILD_DIR}/stamp"
+-    BINARY_DIR "${SDK_BUILD_DIR}"
+-    STEP_TARGETS build
+-    BUILD_COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --config $<CONFIG> ${PROJECT_BUILD_COMMAND}
+-    INSTALL_COMMAND ${CMAKE_COMMAND} -E echo "Install step is already done at build time."
+-    LIST_SEPARATOR | # Use the alternate list separator
+-    CMAKE_ARGS ${APP_OPTIONS} ${USER_ARGS} -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR> -DCMAKE_PREFIX_PATH=${PREFIX_PATH}
+-    #BUILD_ALWAYS NO #${DO_BUILD}
+-)
+-ExternalProject_Add_Step(sdk force_build
+-	COMMENT "Forcing build for 'desktop'"
+-	DEPENDEES configure
+-	DEPENDERS build
+-	ALWAYS 1
+-)
+ include(FindPkgConfig)
+ 
+-set(APP_DEPENDS sdk)
+-
+-
+ find_package(Qt5 5.12 COMPONENTS Core REQUIRED)
+ 
+ if ( NOT Qt5_FOUND )
+@@ -173,39 +151,6 @@ find_package(Mediastreamer2 CONFIG QUIET)
+ find_package(ortp CONFIG QUIET)
+ 
+ 
+-if(NOT (LinphoneCxx_FOUND) OR NOT (Linphone_FOUND) OR NOT (bctoolbox_FOUND) OR NOT (belcard_FOUND) OR NOT (Mediastreamer2_FOUND) OR NOT (ortp_FOUND) OR FORCE_APP_EXTERNAL_PROJECTS)
+-	message("Projects are set as External projects. You can start building them by using for example : cmake --build . --target install")
+-	ExternalProject_Add(linphone-qt PREFIX "${CMAKE_BINARY_DIR}/linphone-app"
+-		SOURCE_DIR "${CMAKE_SOURCE_DIR}/linphone-app"
+-		INSTALL_DIR "${APPLICATION_OUTPUT_DIR}"
+-		BINARY_DIR "${CMAKE_BINARY_DIR}/linphone-app"
+-		DEPENDS ${APP_DEPENDS}
+-		BUILD_COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --config $<CONFIG> ${PROJECT_BUILD_COMMAND}
+-		INSTALL_COMMAND ${CMAKE_COMMAND} -E echo "Install step will not be done by external project"
+-		LIST_SEPARATOR | # Use the alternate list separator
+-		CMAKE_ARGS ${APP_OPTIONS} ${USER_ARGS} -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR> -DCMAKE_PREFIX_PATH=${PREFIX_PATH}
+-	# ${APP_OPTIONS}
+-		BUILD_ALWAYS ON
+-	)
+-	install(CODE "message(STATUS Running install)")
+-	set(AUTO_REGENERATION auto_regeneration)
+-	add_custom_target(${AUTO_REGENERATION} ALL
+-		COMMAND ${CMAKE_COMMAND} ${CMAKE_CURRENT_SOURCE_DIR}
+-		DEPENDS linphone-qt)
+-else()
+-	message("Adding Linphone Desktop in an IDE-friendly state")
+-	set(CMAKE_INSTALL_PREFIX "${APPLICATION_OUTPUT_DIR}")
+-	add_subdirectory(${CMAKE_SOURCE_DIR}/linphone-app)
+-	add_dependencies(app-library ${APP_DEPENDS})
+-endif()
+-ExternalProject_Add(linphone-qt-only PREFIX "${CMAKE_BINARY_DIR}/linphone-app"
+-    SOURCE_DIR "${CMAKE_SOURCE_DIR}/linphone-app"
+-    INSTALL_DIR "${APPLICATION_OUTPUT_DIR}"
+-    BINARY_DIR "${CMAKE_BINARY_DIR}/linphone-app"
+-    BUILD_COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --config $<CONFIG> ${PROJECT_BUILD_COMMAND}
+-#    INSTALL_COMMAND ${CMAKE_COMMAND} -E echo "Install step is already done at build time."
+-    LIST_SEPARATOR | # Use the alternate list separator
+-    CMAKE_ARGS ${APP_OPTIONS} ${USER_ARGS} -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR> -DCMAKE_PREFIX_PATH=${PREFIX_PATH}
+-    EXCLUDE_FROM_ALL ON
+-    BUILD_ALWAYS ON
+-)
++message("Adding Linphone Desktop in an IDE-friendly state")
++set(CMAKE_INSTALL_PREFIX "${APPLICATION_OUTPUT_DIR}")
++add_subdirectory(${CMAKE_SOURCE_DIR}/linphone-app)
+diff --git a/linphone-app/cmake_builder/additional_steps.cmake b/linphone-app/cmake_builder/additional_steps.cmake
+index 7f7fd573..a69a04e8 100644
+--- a/linphone-app/cmake_builder/additional_steps.cmake
++++ b/linphone-app/cmake_builder/additional_steps.cmake
+@@ -54,14 +54,5 @@ if (ENABLE_PACKAGING)
+     linphone_builder_apply_flags()
+     linphone_builder_set_ep_directories(linphone_package)
+     linphone_builder_expand_external_project_vars()
+-    ExternalProject_Add(TARGET_linphone_package
+-      DEPENDS TARGET_linphone_builder
+-      TMP_DIR ${ep_tmp}
+-      BINARY_DIR ${ep_build}
+-      SOURCE_DIR "${CMAKE_CURRENT_LIST_DIR}/linphone_package"
+-      DOWNLOAD_COMMAND ""
+-      CMAKE_GENERATOR ${CMAKE_GENERATOR}
+-      CMAKE_ARGS ${LINPHONE_BUILDER_EP_ARGS} -DCMAKE_INSTALL_PREFIX=${LINPHONE_BUILDER_WORK_DIR}/PACKAGE -DTOOLS_DIR=${CMAKE_BINARY_DIR}/programs -DLINPHONE_OUTPUT_DIR=${CMAKE_INSTALL_PREFIX} -DLINPHONE_DESKTOP_DIR=${CMAKE_CURRENT_LIST_DIR}/.. -DLINPHONE_SOURCE_DIR=${EP_linphone_SOURCE_DIR} ${ENABLE_VARIABLES} -DLINPHONE_BUILDER_SIGNING_IDENTITY=${LINPHONE_BUILDER_SIGNING_IDENTITY}
+-    )
+   endif ()
+ endif ()
+-- 
+2.29.2
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/remove-bc_compute_full_version-usage.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/remove-bc_compute_full_version-usage.patch
new file mode 100644
index 000000000000..547652d3af7f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/linphone/remove-bc_compute_full_version-usage.patch
@@ -0,0 +1,74 @@
+From 6fc23da651d54979e73776fcda38614e290d65dc Mon Sep 17 00:00:00 2001
+From: David P <megver83@parabola.nu>
+Date: Fri, 23 Oct 2020 16:44:17 -0300
+Subject: [PATCH 2/2] remove bc_compute_full_version usage
+
+---
+ linphone-app/CMakeLists.txt                           | 11 +----------
+ linphone-app/build/CMakeLists.txt                     |  5 -----
+ .../cmake_builder/linphone_package/CMakeLists.txt     | 10 +---------
+ 3 files changed, 2 insertions(+), 24 deletions(-)
+
+diff --git a/linphone-app/CMakeLists.txt b/linphone-app/CMakeLists.txt
+index 3bc9420a..27b418ee 100644
+--- a/linphone-app/CMakeLists.txt
++++ b/linphone-app/CMakeLists.txt
+@@ -21,17 +21,8 @@
+ ################################################################################
+ cmake_minimum_required(VERSION 3.1)
+ 
++include(linphoneqt_version.cmake)
+ find_package(bctoolbox CONFIG)
+-set(FULL_VERSION )
+-bc_compute_full_version(FULL_VERSION)
+-set(version_major )
+-set(version_minor )
+-set(version_patch )
+-set(identifiers )
+-set(metadata )
+-bc_parse_full_version("${FULL_VERSION}" version_major version_minor version_patch identifiers metadata)
+-
+-project(linphoneqt VERSION "${version_major}.${version_minor}.${version_patch}")
+ 
+ if(ENABLE_BUILD_VERBOSE)
+ 	#message("CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH}")
+diff --git a/linphone-app/build/CMakeLists.txt b/linphone-app/build/CMakeLists.txt
+index 8ef03faa..97d94bd6 100644
+--- a/linphone-app/build/CMakeLists.txt
++++ b/linphone-app/build/CMakeLists.txt
+@@ -46,11 +46,6 @@ set(CPACK_SOURCE_IGNORE_FILES
+   "libmng.spec"
+ )
+ 
+-bc_compute_full_version(PROJECT_VERSION_BUILD)
+-if(PROJECT_VERSION_BUILD)
+-  set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${PROJECT_VERSION_BUILD}")
+-endif()
+-
+ message("-- Package file name is ${CPACK_PACKAGE_FILE_NAME}")
+ 
+ set(CPACK_SOURCE_PACKAGE_FILE_NAME ${CPACK_PACKAGE_FILE_NAME})
+diff --git a/linphone-app/cmake_builder/linphone_package/CMakeLists.txt b/linphone-app/cmake_builder/linphone_package/CMakeLists.txt
+index baea03cf..08ffc1b5 100644
+--- a/linphone-app/cmake_builder/linphone_package/CMakeLists.txt
++++ b/linphone-app/cmake_builder/linphone_package/CMakeLists.txt
+@@ -38,15 +38,7 @@ set(LINPHONE_QML_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../ui")
+ # ==============================================================================
+ # Build package version.
+ # ==============================================================================
+-bc_compute_full_version(APP_PROJECT_VERSION)
+-if (GIT_EXECUTABLE AND NOT(APP_PROJECT_VERSION))
+-  execute_process(
+-    COMMAND ${GIT_EXECUTABLE} describe --always
+-    OUTPUT_VARIABLE APP_PROJECT_VERSION
+-    OUTPUT_STRIP_TRAILING_WHITESPACE
+-    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/../.."
+-  )
+-elseif (NOT(APP_PROJECT_VERSION))
++if (NOT(APP_PROJECT_VERSION))
+   set(APP_PROJECT_VERSION "0.0.0")
+ endif ()
+ string(REGEX REPLACE "([0-9.]+)-?.*" "\\1" LINPHONE_VERSION "${APP_PROJECT_VERSION}")
+-- 
+2.29.2
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-commander/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-commander/default.nix
new file mode 100644
index 000000000000..2ebf762c418b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-commander/default.nix
@@ -0,0 +1,42 @@
+{ stdenv, lib, fetchFromGitHub, cacert, python3 }:
+
+stdenv.mkDerivation {
+  pname = "matrix-commander";
+  version = "unstable-2021-05-26";
+
+  src = fetchFromGitHub {
+    owner = "8go";
+    repo = "matrix-commander";
+    rev = "06b4738bc74ee86fb3ac88c04b8230abf82e7421";
+    sha256 = "1skpq3xfnz11m298qnsw68xv391p5qg47flagzsk86pnzi841vc1";
+  };
+
+  buildInputs = [
+    cacert
+    (python3.withPackages(ps: with ps; [
+      matrix-nio
+      magic
+      markdown
+      pillow
+      urllib3
+      aiofiles
+    ]))];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp $src/matrix-commander.py $out/bin/matrix-commander
+    chmod +x $out/bin/matrix-commander
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Simple but convenient CLI-based Matrix client app for sending and receiving";
+    homepage = "https://github.com/8go/matrix-commander";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.seb314 ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-dl/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-dl/default.nix
new file mode 100644
index 000000000000..caf6669e120b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-dl/default.nix
@@ -0,0 +1,25 @@
+{ lib, python3Packages, fetchFromGitHub }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "matrix-dl";
+  version = "unstable-2020-07-14";
+
+  src = fetchFromGitHub {
+    owner = "rubo77";
+    repo = pname;
+    rev = "b1a86d1421f39ee327284e1023f09dc165e3c8a5";
+    sha256 = "1l8nh8z7kz24v0wcy3ll3w6in2yxwa1yz8lyc3x0blz37d8ss4ql";
+  };
+
+  propagatedBuildInputs = with python3Packages; [
+    matrix-client
+  ];
+
+  meta = with lib; {
+    description = "Download backlogs from Matrix as raw text";
+    homepage = src.meta.homepage;
+    license = licenses.gpl1Plus;
+    maintainers = with maintainers; [ aw ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/composition.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/composition.nix
new file mode 100644
index 000000000000..2992bf22cb31
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/composition.nix
@@ -0,0 +1,20 @@
+# This file has been generated by node2nix 1.7.0. Do not edit!
+
+{pkgs ? import <nixpkgs> {
+    inherit system;
+  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs-12_x"}:
+
+let
+  nodeEnv = import ./node-env.nix {
+    inherit (pkgs) lib stdenv python2 util-linux runCommand writeTextFile;
+    inherit nodejs;
+    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
+  };
+locpkgs = import ./node-packages.nix {
+  inherit (pkgs) fetchurl fetchgit;
+  inherit nodeEnv;
+  globalBuildInputs = [
+    locpkgs.node-pre-gyp
+  ];
+};
+in locpkgs
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/default.nix
new file mode 100644
index 000000000000..9e3527948818
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, pkgs }:
+(import ./composition.nix {
+  inherit pkgs;
+  inherit (stdenv.hostPlatform) system;
+})."package".override {
+  postInstall = ''
+    mkdir "$out/bin"
+    echo '#!/bin/sh' >> "$out/bin/matrix-recorder"
+    echo "'${pkgs.nodejs-12_x}/bin/node'" \
+         "'$out/lib/node_modules/matrix-recorder/matrix-recorder.js'" \
+         '"$@"' >> "$out/bin/matrix-recorder"
+    echo '#!/bin/sh' >> "$out/bin/matrix-recorder-to-html"
+    echo 'cd "$1"' >> "$out/bin/matrix-recorder-to-html"
+    echo "test -d templates/ || ln -sfT '$out/lib/node_modules/matrix-recorder/templates' templates" >> "$out/bin/matrix-recorder-to-html"
+    echo "'${pkgs.nodejs-12_x}/bin/node'" \
+         "'$out/lib/node_modules/matrix-recorder/recorder-to-html.js'" \
+         '.' >> "$out/bin/matrix-recorder-to-html"
+    chmod a+x "$out/bin/matrix-recorder"
+    chmod a+x "$out/bin/matrix-recorder-to-html"
+  '';
+  meta = {
+    description = "Matrix message recorder";
+    homepage = "https://gitlab.com/argit/matrix-recorder/";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.raskin ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-env.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-env.nix
new file mode 100644
index 000000000000..e6131fe8e771
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-env.nix
@@ -0,0 +1,540 @@
+# This file originates from node2nix
+
+{lib, stdenv, nodejs, python2, util-linux, libtool, runCommand, writeTextFile}:
+
+let
+  python = if nodejs ? python then nodejs.python else python2;
+
+  # Create a tar wrapper that filters all the 'Ignoring unknown extended header keyword' noise
+  tarWrapper = runCommand "tarWrapper" {} ''
+    mkdir -p $out/bin
+
+    cat > $out/bin/tar <<EOF
+    #! ${stdenv.shell} -e
+    $(type -p tar) "\$@" --warning=no-unknown-keyword --delay-directory-restore
+    EOF
+
+    chmod +x $out/bin/tar
+  '';
+
+  # Function that generates a TGZ file from a NPM project
+  buildNodeSourceDist =
+    { name, version, src, ... }:
+
+    stdenv.mkDerivation {
+      name = "node-tarball-${name}-${version}";
+      inherit src;
+      buildInputs = [ nodejs ];
+      buildPhase = ''
+        export HOME=$TMPDIR
+        tgzFile=$(npm pack | tail -n 1) # Hooks to the pack command will add output (https://docs.npmjs.com/misc/scripts)
+      '';
+      installPhase = ''
+        mkdir -p $out/tarballs
+        mv $tgzFile $out/tarballs
+        mkdir -p $out/nix-support
+        echo "file source-dist $out/tarballs/$tgzFile" >> $out/nix-support/hydra-build-products
+      '';
+    };
+
+  includeDependencies = {dependencies}:
+    lib.optionalString (dependencies != [])
+      (lib.concatMapStrings (dependency:
+        ''
+          # Bundle the dependencies of the package
+          mkdir -p node_modules
+          cd node_modules
+
+          # Only include dependencies if they don't exist. They may also be bundled in the package.
+          if [ ! -e "${dependency.name}" ]
+          then
+              ${composePackage dependency}
+          fi
+
+          cd ..
+        ''
+      ) dependencies);
+
+  # Recursively composes the dependencies of a package
+  composePackage = { name, packageName, src, dependencies ? [], ... }@args:
+    ''
+      DIR=$(pwd)
+      cd $TMPDIR
+
+      unpackFile ${src}
+
+      # Make the base dir in which the target dependency resides first
+      mkdir -p "$(dirname "$DIR/${packageName}")"
+
+      if [ -f "${src}" ]
+      then
+          # Figure out what directory has been unpacked
+          packageDir="$(find . -maxdepth 1 -type d | tail -1)"
+
+          # Restore write permissions to make building work
+          find "$packageDir" -type d -exec chmod u+x {} \;
+          chmod -R u+w "$packageDir"
+
+          # Move the extracted tarball into the output folder
+          mv "$packageDir" "$DIR/${packageName}"
+      elif [ -d "${src}" ]
+      then
+          # Get a stripped name (without hash) of the source directory.
+          # On old nixpkgs it's already set internally.
+          if [ -z "$strippedName" ]
+          then
+              strippedName="$(stripHash ${src})"
+          fi
+
+          # Restore write permissions to make building work
+          chmod -R u+w "$strippedName"
+
+          # Move the extracted directory into the output folder
+          mv "$strippedName" "$DIR/${packageName}"
+      fi
+
+      # Unset the stripped name to not confuse the next unpack step
+      unset strippedName
+
+      # Include the dependencies of the package
+      cd "$DIR/${packageName}"
+      ${includeDependencies { inherit dependencies; }}
+      cd ..
+      ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+    '';
+
+  pinpointDependencies = {dependencies, production}:
+    let
+      pinpointDependenciesFromPackageJSON = writeTextFile {
+        name = "pinpointDependencies.js";
+        text = ''
+          var fs = require('fs');
+          var path = require('path');
+
+          function resolveDependencyVersion(location, name) {
+              if(location == process.env['NIX_STORE']) {
+                  return null;
+              } else {
+                  var dependencyPackageJSON = path.join(location, "node_modules", name, "package.json");
+
+                  if(fs.existsSync(dependencyPackageJSON)) {
+                      var dependencyPackageObj = JSON.parse(fs.readFileSync(dependencyPackageJSON));
+
+                      if(dependencyPackageObj.name == name) {
+                          return dependencyPackageObj.version;
+                      }
+                  } else {
+                      return resolveDependencyVersion(path.resolve(location, ".."), name);
+                  }
+              }
+          }
+
+          function replaceDependencies(dependencies) {
+              if(typeof dependencies == "object" && dependencies !== null) {
+                  for(var dependency in dependencies) {
+                      var resolvedVersion = resolveDependencyVersion(process.cwd(), dependency);
+
+                      if(resolvedVersion === null) {
+                          process.stderr.write("WARNING: cannot pinpoint dependency: "+dependency+", context: "+process.cwd()+"\n");
+                      } else {
+                          dependencies[dependency] = resolvedVersion;
+                      }
+                  }
+              }
+          }
+
+          /* Read the package.json configuration */
+          var packageObj = JSON.parse(fs.readFileSync('./package.json'));
+
+          /* Pinpoint all dependencies */
+          replaceDependencies(packageObj.dependencies);
+          if(process.argv[2] == "development") {
+              replaceDependencies(packageObj.devDependencies);
+          }
+          replaceDependencies(packageObj.optionalDependencies);
+
+          /* Write the fixed package.json file */
+          fs.writeFileSync("package.json", JSON.stringify(packageObj, null, 2));
+        '';
+      };
+    in
+    ''
+      node ${pinpointDependenciesFromPackageJSON} ${if production then "production" else "development"}
+
+      ${lib.optionalString (dependencies != [])
+        ''
+          if [ -d node_modules ]
+          then
+              cd node_modules
+              ${lib.concatMapStrings (dependency: pinpointDependenciesOfPackage dependency) dependencies}
+              cd ..
+          fi
+        ''}
+    '';
+
+  # Recursively traverses all dependencies of a package and pinpoints all
+  # dependencies in the package.json file to the versions that are actually
+  # being used.
+
+  pinpointDependenciesOfPackage = { packageName, dependencies ? [], production ? true, ... }@args:
+    ''
+      if [ -d "${packageName}" ]
+      then
+          cd "${packageName}"
+          ${pinpointDependencies { inherit dependencies production; }}
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+      fi
+    '';
+
+  # Extract the Node.js source code which is used to compile packages with
+  # native bindings
+  nodeSources = runCommand "node-sources" {} ''
+    tar --no-same-owner --no-same-permissions -xf ${nodejs.src}
+    mv node-* $out
+  '';
+
+  # Script that adds _integrity fields to all package.json files to prevent NPM from consulting the cache (that is empty)
+  addIntegrityFieldsScript = writeTextFile {
+    name = "addintegrityfields.js";
+    text = ''
+      var fs = require('fs');
+      var path = require('path');
+
+      function augmentDependencies(baseDir, dependencies) {
+          for(var dependencyName in dependencies) {
+              var dependency = dependencies[dependencyName];
+
+              // Open package.json and augment metadata fields
+              var packageJSONDir = path.join(baseDir, "node_modules", dependencyName);
+              var packageJSONPath = path.join(packageJSONDir, "package.json");
+
+              if(fs.existsSync(packageJSONPath)) { // Only augment packages that exist. Sometimes we may have production installs in which development dependencies can be ignored
+                  console.log("Adding metadata fields to: "+packageJSONPath);
+                  var packageObj = JSON.parse(fs.readFileSync(packageJSONPath));
+
+                  if(dependency.integrity) {
+                      packageObj["_integrity"] = dependency.integrity;
+                  } else {
+                      packageObj["_integrity"] = "sha1-000000000000000000000000000="; // When no _integrity string has been provided (e.g. by Git dependencies), add a dummy one. It does not seem to harm and it bypasses downloads.
+                  }
+
+                  if(dependency.resolved) {
+                      packageObj["_resolved"] = dependency.resolved; // Adopt the resolved property if one has been provided
+                  } else {
+                      packageObj["_resolved"] = dependency.version; // Set the resolved version to the version identifier. This prevents NPM from cloning Git repositories.
+                  }
+
+                  if(dependency.from !== undefined) { // Adopt from property if one has been provided
+                      packageObj["_from"] = dependency.from;
+                  }
+
+                  fs.writeFileSync(packageJSONPath, JSON.stringify(packageObj, null, 2));
+              }
+
+              // Augment transitive dependencies
+              if(dependency.dependencies !== undefined) {
+                  augmentDependencies(packageJSONDir, dependency.dependencies);
+              }
+          }
+      }
+
+      if(fs.existsSync("./package-lock.json")) {
+          var packageLock = JSON.parse(fs.readFileSync("./package-lock.json"));
+
+          if(packageLock.lockfileVersion !== 1) {
+             process.stderr.write("Sorry, I only understand lock file version 1!\n");
+             process.exit(1);
+          }
+
+          if(packageLock.dependencies !== undefined) {
+              augmentDependencies(".", packageLock.dependencies);
+          }
+      }
+    '';
+  };
+
+  # Reconstructs a package-lock file from the node_modules/ folder structure and package.json files with dummy sha1 hashes
+  reconstructPackageLock = writeTextFile {
+    name = "addintegrityfields.js";
+    text = ''
+      var fs = require('fs');
+      var path = require('path');
+
+      var packageObj = JSON.parse(fs.readFileSync("package.json"));
+
+      var lockObj = {
+          name: packageObj.name,
+          version: packageObj.version,
+          lockfileVersion: 1,
+          requires: true,
+          dependencies: {}
+      };
+
+      function augmentPackageJSON(filePath, dependencies) {
+          var packageJSON = path.join(filePath, "package.json");
+          if(fs.existsSync(packageJSON)) {
+              var packageObj = JSON.parse(fs.readFileSync(packageJSON));
+              dependencies[packageObj.name] = {
+                  version: packageObj.version,
+                  integrity: "sha1-000000000000000000000000000=",
+                  dependencies: {}
+              };
+              processDependencies(path.join(filePath, "node_modules"), dependencies[packageObj.name].dependencies);
+          }
+      }
+
+      function processDependencies(dir, dependencies) {
+          if(fs.existsSync(dir)) {
+              var files = fs.readdirSync(dir);
+
+              files.forEach(function(entry) {
+                  var filePath = path.join(dir, entry);
+                  var stats = fs.statSync(filePath);
+
+                  if(stats.isDirectory()) {
+                      if(entry.substr(0, 1) == "@") {
+                          // When we encounter a namespace folder, augment all packages belonging to the scope
+                          var pkgFiles = fs.readdirSync(filePath);
+
+                          pkgFiles.forEach(function(entry) {
+                              if(stats.isDirectory()) {
+                                  var pkgFilePath = path.join(filePath, entry);
+                                  augmentPackageJSON(pkgFilePath, dependencies);
+                              }
+                          });
+                      } else {
+                          augmentPackageJSON(filePath, dependencies);
+                      }
+                  }
+              });
+          }
+      }
+
+      processDependencies("node_modules", lockObj.dependencies);
+
+      fs.writeFileSync("package-lock.json", JSON.stringify(lockObj, null, 2));
+    '';
+  };
+
+  prepareAndInvokeNPM = {packageName, bypassCache, reconstructLock, npmFlags, production}:
+    let
+      forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
+    in
+    ''
+        # Pinpoint the versions of all dependencies to the ones that are actually being used
+        echo "pinpointing versions of dependencies..."
+        source $pinpointDependenciesScriptPath
+
+        # Patch the shebangs of the bundled modules to prevent them from
+        # calling executables outside the Nix store as much as possible
+        patchShebangs .
+
+        # Deploy the Node.js package by running npm install. Since the
+        # dependencies have been provided already by ourselves, it should not
+        # attempt to install them again, which is good, because we want to make
+        # it Nix's responsibility. If it needs to install any dependencies
+        # anyway (e.g. because the dependency parameters are
+        # incomplete/incorrect), it fails.
+        #
+        # The other responsibilities of NPM are kept -- version checks, build
+        # steps, postprocessing etc.
+
+        export HOME=$TMPDIR
+        cd "${packageName}"
+        runHook preRebuild
+
+        ${lib.optionalString bypassCache ''
+          ${lib.optionalString reconstructLock ''
+            if [ -f package-lock.json ]
+            then
+                echo "WARNING: Reconstruct lock option enabled, but a lock file already exists!"
+                echo "This will most likely result in version mismatches! We will remove the lock file and regenerate it!"
+                rm package-lock.json
+            else
+                echo "No package-lock.json file found, reconstructing..."
+            fi
+
+            node ${reconstructPackageLock}
+          ''}
+
+          node ${addIntegrityFieldsScript}
+        ''}
+
+        npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} rebuild
+
+        if [ "$dontNpmInstall" != "1" ]
+        then
+            # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
+            rm -f npm-shrinkwrap.json
+
+            npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} install
+        fi
+    '';
+
+  # Builds and composes an NPM package including all its dependencies
+  buildNodePackage =
+    { name
+    , packageName
+    , version
+    , dependencies ? []
+    , buildInputs ? []
+    , production ? true
+    , npmFlags ? ""
+    , dontNpmInstall ? false
+    , bypassCache ? false
+    , reconstructLock ? false
+    , preRebuild ? ""
+    , dontStrip ? true
+    , unpackPhase ? "true"
+    , buildPhase ? "true"
+    , ... }@args:
+
+    let
+      extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" "dontStrip" "dontNpmInstall" "preRebuild" "unpackPhase" "buildPhase" ];
+    in
+    stdenv.mkDerivation ({
+      name = "node_${name}-${version}";
+      buildInputs = [ tarWrapper python nodejs ]
+        ++ lib.optional (stdenv.isLinux) util-linux
+        ++ lib.optional (stdenv.isDarwin) libtool
+        ++ buildInputs;
+
+      inherit dontStrip; # Stripping may fail a build for some package deployments
+      inherit dontNpmInstall preRebuild unpackPhase buildPhase;
+
+      compositionScript = composePackage args;
+      pinpointDependenciesScript = pinpointDependenciesOfPackage args;
+
+      passAsFile = [ "compositionScript" "pinpointDependenciesScript" ];
+
+      installPhase = ''
+        # Create and enter a root node_modules/ folder
+        mkdir -p $out/lib/node_modules
+        cd $out/lib/node_modules
+
+        # Compose the package and all its dependencies
+        source $compositionScriptPath
+
+        ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
+
+        # Create symlink to the deployed executable folder, if applicable
+        if [ -d "$out/lib/node_modules/.bin" ]
+        then
+            ln -s $out/lib/node_modules/.bin $out/bin
+        fi
+
+        # Create symlinks to the deployed manual page folders, if applicable
+        if [ -d "$out/lib/node_modules/${packageName}/man" ]
+        then
+            mkdir -p $out/share
+            for dir in "$out/lib/node_modules/${packageName}/man/"*
+            do
+                mkdir -p $out/share/man/$(basename "$dir")
+                for page in "$dir"/*
+                do
+                    ln -s $page $out/share/man/$(basename "$dir")
+                done
+            done
+        fi
+
+        # Run post install hook, if provided
+        runHook postInstall
+      '';
+    } // extraArgs);
+
+  # Builds a development shell
+  buildNodeShell =
+    { name
+    , packageName
+    , version
+    , src
+    , dependencies ? []
+    , buildInputs ? []
+    , production ? true
+    , npmFlags ? ""
+    , dontNpmInstall ? false
+    , bypassCache ? false
+    , reconstructLock ? false
+    , dontStrip ? true
+    , unpackPhase ? "true"
+    , buildPhase ? "true"
+    , ... }@args:
+
+    let
+      extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" ];
+
+      nodeDependencies = stdenv.mkDerivation ({
+        name = "node-dependencies-${name}-${version}";
+
+        buildInputs = [ tarWrapper python nodejs ]
+          ++ lib.optional (stdenv.isLinux) util-linux
+          ++ lib.optional (stdenv.isDarwin) libtool
+          ++ buildInputs;
+
+        inherit dontStrip; # Stripping may fail a build for some package deployments
+        inherit dontNpmInstall unpackPhase buildPhase;
+
+        includeScript = includeDependencies { inherit dependencies; };
+        pinpointDependenciesScript = pinpointDependenciesOfPackage args;
+
+        passAsFile = [ "includeScript" "pinpointDependenciesScript" ];
+
+        installPhase = ''
+          mkdir -p $out/${packageName}
+          cd $out/${packageName}
+
+          source $includeScriptPath
+
+          # Create fake package.json to make the npm commands work properly
+          cp ${src}/package.json .
+          chmod 644 package.json
+          ${lib.optionalString bypassCache ''
+            if [ -f ${src}/package-lock.json ]
+            then
+                cp ${src}/package-lock.json .
+            fi
+          ''}
+
+          # Go to the parent folder to make sure that all packages are pinpointed
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+
+          ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
+
+          # Expose the executables that were installed
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+
+          mv ${packageName} lib
+          ln -s $out/lib/node_modules/.bin $out/bin
+        '';
+      } // extraArgs);
+    in
+    stdenv.mkDerivation {
+      name = "node-shell-${name}-${version}";
+
+      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) util-linux ++ buildInputs;
+      buildCommand = ''
+        mkdir -p $out/bin
+        cat > $out/bin/shell <<EOF
+        #! ${stdenv.shell} -e
+        $shellHook
+        exec ${stdenv.shell}
+        EOF
+        chmod +x $out/bin/shell
+      '';
+
+      # Provide the dependencies in a development shell through the NODE_PATH environment variable
+      inherit nodeDependencies;
+      shellHook = lib.optionalString (dependencies != []) ''
+        export NODE_PATH=$nodeDependencies/lib/node_modules
+        export PATH="$nodeDependencies/bin:$PATH"
+      '';
+    };
+in
+{
+  buildNodeSourceDist = lib.makeOverridable buildNodeSourceDist;
+  buildNodePackage = lib.makeOverridable buildNodePackage;
+  buildNodeShell = lib.makeOverridable buildNodeShell;
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-packages.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-packages.nix
new file mode 100644
index 000000000000..1f968a62c9f9
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/node-packages.nix
@@ -0,0 +1,1426 @@
+# This file has been generated by node2nix 1.7.0. Do not edit!
+
+{nodeEnv, fetchurl, fetchgit, globalBuildInputs ? []}:
+
+let
+  sources = {
+    "abbrev-1.1.1" = {
+      name = "abbrev";
+      packageName = "abbrev";
+      version = "1.1.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz";
+        sha512 = "38s4f3id97wsb0rg9nm9zvxyq0nvwrmrpa5dzvrkp36mf5ibs98b4z6lvsbrwzzs0sbcank6c7gpp06vcwp9acfhp41rzlhi3ybsxwy";
+      };
+    };
+    "ajv-6.10.2" = {
+      name = "ajv";
+      packageName = "ajv";
+      version = "6.10.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz";
+        sha512 = "13mb943karizrqc9k4wpfs02jcrjzqyaysld4pmqacald7yj8wsjbx8gk2pbn6kc85fzjyb22x836g65fjj0mmndk2a9f878r858ysd";
+      };
+    };
+    "another-json-0.2.0" = {
+      name = "another-json";
+      packageName = "another-json";
+      version = "0.2.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/another-json/-/another-json-0.2.0.tgz";
+        sha1 = "b5f4019c973b6dd5c6506a2d93469cb6d32aeedc";
+      };
+    };
+    "ansi-regex-2.1.1" = {
+      name = "ansi-regex";
+      packageName = "ansi-regex";
+      version = "2.1.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz";
+        sha1 = "c3b33ab5ee360d86e0e628f0468ae7ef27d654df";
+      };
+    };
+    "aproba-1.2.0" = {
+      name = "aproba";
+      packageName = "aproba";
+      version = "1.2.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz";
+        sha512 = "13mgnbmdhdq0qncijvpip1l39q1a8labcvj3hc3n1yl2zch106mdkn7p7bd5knvmfkkn1js9nd47nzyjk1himbm8ry8i8gd6mk7mlk3";
+      };
+    };
+    "are-we-there-yet-1.1.5" = {
+      name = "are-we-there-yet";
+      packageName = "are-we-there-yet";
+      version = "1.1.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz";
+        sha512 = "3mizm1yfxynlhaavbimv7n9qljrbhni22v4fch6zr89x6ps0gpjcxm5yfvv05n8vc3r17hmglyswgq9w0s598xv70nnyw358q11s5p6";
+      };
+    };
+    "asn1-0.2.4" = {
+      name = "asn1";
+      packageName = "asn1";
+      version = "0.2.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz";
+        sha512 = "1v2z1ll0l8rif8hh0d03jc49kz3p8hym63q8ixbas48w4a8akl413hwn08nx83m89sj3mxl06aa0grp7n8hj6hcbsb2k3fhj913674g";
+      };
+    };
+    "assert-plus-1.0.0" = {
+      name = "assert-plus";
+      packageName = "assert-plus";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz";
+        sha1 = "f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525";
+      };
+    };
+    "asynckit-0.4.0" = {
+      name = "asynckit";
+      packageName = "asynckit";
+      version = "0.4.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz";
+        sha1 = "c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79";
+      };
+    };
+    "aws-sign2-0.7.0" = {
+      name = "aws-sign2";
+      packageName = "aws-sign2";
+      version = "0.7.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz";
+        sha1 = "b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8";
+      };
+    };
+    "aws4-1.9.0" = {
+      name = "aws4";
+      packageName = "aws4";
+      version = "1.9.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/aws4/-/aws4-1.9.0.tgz";
+        sha512 = "3h6cs1b1kw3rsfczqb8jzjlsha24ax4hyhgrk4smwj1i66lgc63kv03cvkn7zbivqvnrpmk640mp3c1bnmm49v1v40kvl5xay2vmyjj";
+      };
+    };
+    "balanced-match-1.0.0" = {
+      name = "balanced-match";
+      packageName = "balanced-match";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz";
+        sha1 = "89b4d199ab2bee49de164ea02b89ce462d71b767";
+      };
+    };
+    "bcrypt-pbkdf-1.0.2" = {
+      name = "bcrypt-pbkdf";
+      packageName = "bcrypt-pbkdf";
+      version = "1.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz";
+        sha1 = "a4301d389b6a43f9b67ff3ca11a3f6637e360e9e";
+      };
+    };
+    "brace-expansion-1.1.11" = {
+      name = "brace-expansion";
+      packageName = "brace-expansion";
+      version = "1.1.11";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz";
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+        sha1 = "6a385fb8853d952d5ff05d0e8aaf94278dc63dcf";
+      };
+    };
+    "strip-json-comments-2.0.1" = {
+      name = "strip-json-comments";
+      packageName = "strip-json-comments";
+      version = "2.0.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz";
+        sha1 = "3c531942e908c2697c0ec344858c286c7ca0a60a";
+      };
+    };
+    "tar-4.4.13" = {
+      name = "tar";
+      packageName = "tar";
+      version = "4.4.13";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz";
+        sha512 = "10gwhmgx7fh619zv48r2lnm42qr7rw4qa9ph7142rizcn8in9dpi49jbmmv8ism60rcg1a7b4103r598jngi1rcn50sw7b8n1570rf3";
+      };
+    };
+    "tough-cookie-2.4.3" = {
+      name = "tough-cookie";
+      packageName = "tough-cookie";
+      version = "2.4.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz";
+        sha512 = "2akhyixx49dkqadghzwj53xwfa1aikf0iv04ib9zj0kbilkzxxh16j5c6vfkcwm3cy29y46q3d8lzinsy6ql2cvb1wcw31gzs9jp6s3";
+      };
+    };
+    "tunnel-agent-0.6.0" = {
+      name = "tunnel-agent";
+      packageName = "tunnel-agent";
+      version = "0.6.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz";
+        sha1 = "27a5dea06b36b04a0a9966774b290868f0fc40fd";
+      };
+    };
+    "tweetnacl-0.14.5" = {
+      name = "tweetnacl";
+      packageName = "tweetnacl";
+      version = "0.14.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz";
+        sha1 = "5ae68177f192d4456269d108afa93ff8743f4f64";
+      };
+    };
+    "uri-js-4.2.2" = {
+      name = "uri-js";
+      packageName = "uri-js";
+      version = "4.2.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz";
+        sha512 = "2fz60s71ghl56ddfiiaws81xpiidlbjk69jyjmahz190d2advy9zdbcwh5if4rgg5hxdbfxhkwiipjrnjy8w834bxsmzambd2p4b3r9";
+      };
+    };
+    "util-deprecate-1.0.2" = {
+      name = "util-deprecate";
+      packageName = "util-deprecate";
+      version = "1.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz";
+        sha1 = "450d4dc9fa70de732762fbd2d4a28981419a0ccf";
+      };
+    };
+    "uuid-3.3.3" = {
+      name = "uuid";
+      packageName = "uuid";
+      version = "3.3.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz";
+        sha512 = "14s78i0nwzf5q1xz1d5rjlsm2rk5rf75nizydkj19mhbk1hw00lwzilkncx3bqzqhsni41i88wajwmc2mxxckkjlkjhq7j6ajihsvd5";
+      };
+    };
+    "verror-1.10.0" = {
+      name = "verror";
+      packageName = "verror";
+      version = "1.10.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz";
+        sha1 = "3a105ca17053af55d6e270c1f8288682e18da400";
+      };
+    };
+    "wide-align-1.1.3" = {
+      name = "wide-align";
+      packageName = "wide-align";
+      version = "1.1.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz";
+        sha512 = "2224a32flpf40nhq6rj4idzkcdz0vx65bfxp90hd06db18l6fiqgxz1xnaygm3pbfb1a6v73hl8ryq4996b09zwwins0bqprx0hwsa0";
+      };
+    };
+    "wrappy-1.0.2" = {
+      name = "wrappy";
+      packageName = "wrappy";
+      version = "1.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz";
+        sha1 = "b5243d8f3ec1aa35f1364605bc0d1036e30ab69f";
+      };
+    };
+    "write-file-atomic-1.3.4" = {
+      name = "write-file-atomic";
+      packageName = "write-file-atomic";
+      version = "1.3.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-1.3.4.tgz";
+        sha1 = "f807a4f0b1d9e913ae7a48112e6cc3af1991b45f";
+      };
+    };
+    "yallist-3.1.1" = {
+      name = "yallist";
+      packageName = "yallist";
+      version = "3.1.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz";
+        sha512 = "3ig31a6zfbdlrs3l77a8avpp17hajryhyq2xk4h3ayc4dmxch146rdk7q1s1jgx9qvmxq125r0xq2bvnq0rq63m75k9y7wglm0hd1bb";
+      };
+    };
+  };
+  node-pre-gyp = nodeEnv.buildNodePackage {
+    name = "node-pre-gyp";
+    packageName = "node-pre-gyp";
+    version = "0.14.0";
+    src = fetchurl {
+      url = "https://registry.npmjs.org/node-pre-gyp/-/node-pre-gyp-0.14.0.tgz";
+      sha512 = "32drv6q9sh4i2ff2djd1dhxxxiaiymmgycbm12wpkz9vxspnldxgmppf9sazp3c72771a1p5s4kkzgwn4w1csyz9bn4zdbdnq5w6azq";
+    };
+    dependencies = [
+      sources."abbrev-1.1.1"
+      sources."ansi-regex-2.1.1"
+      sources."aproba-1.2.0"
+      sources."are-we-there-yet-1.1.5"
+      sources."balanced-match-1.0.0"
+      sources."brace-expansion-1.1.11"
+      sources."chownr-1.1.3"
+      sources."code-point-at-1.1.0"
+      sources."concat-map-0.0.1"
+      sources."console-control-strings-1.1.0"
+      sources."core-util-is-1.0.2"
+      sources."debug-3.2.6"
+      sources."deep-extend-0.6.0"
+      sources."delegates-1.0.0"
+      sources."detect-libc-1.0.3"
+      sources."fs-minipass-1.2.7"
+      sources."fs.realpath-1.0.0"
+      sources."gauge-2.7.4"
+      sources."glob-7.1.6"
+      sources."has-unicode-2.0.1"
+      sources."iconv-lite-0.4.24"
+      sources."ignore-walk-3.0.3"
+      sources."inflight-1.0.6"
+      sources."inherits-2.0.4"
+      sources."ini-1.3.5"
+      sources."is-fullwidth-code-point-1.0.0"
+      sources."isarray-1.0.0"
+      sources."minimatch-3.0.4"
+      sources."minimist-0.0.8"
+      sources."minipass-2.9.0"
+      sources."minizlib-1.3.3"
+      sources."mkdirp-0.5.1"
+      sources."ms-2.1.2"
+      sources."needle-2.4.0"
+      sources."nopt-4.0.1"
+      sources."npm-bundled-1.0.6"
+      sources."npm-packlist-1.4.6"
+      sources."npmlog-4.1.2"
+      sources."number-is-nan-1.0.1"
+      sources."object-assign-4.1.1"
+      sources."once-1.4.0"
+      sources."os-homedir-1.0.2"
+      sources."os-tmpdir-1.0.2"
+      sources."osenv-0.1.5"
+      sources."path-is-absolute-1.0.1"
+      sources."process-nextick-args-2.0.1"
+      (sources."rc-1.2.8" // {
+        dependencies = [
+          sources."minimist-1.2.0"
+        ];
+      })
+      sources."readable-stream-2.3.6"
+      sources."rimraf-2.7.1"
+      sources."safe-buffer-5.1.2"
+      sources."safer-buffer-2.1.2"
+      sources."sax-1.2.4"
+      sources."semver-5.7.1"
+      sources."set-blocking-2.0.0"
+      sources."signal-exit-3.0.2"
+      sources."string-width-1.0.2"
+      sources."string_decoder-1.1.1"
+      sources."strip-ansi-3.0.1"
+      sources."strip-json-comments-2.0.1"
+      sources."tar-4.4.13"
+      sources."util-deprecate-1.0.2"
+      sources."wide-align-1.1.3"
+      sources."wrappy-1.0.2"
+      sources."yallist-3.1.1"
+    ];
+    buildInputs = [];
+    meta = {
+      description = "Node.js native addon binary install tool";
+      homepage = "https://github.com/mapbox/node-pre-gyp#readme";
+      license = "BSD-3-Clause";
+    };
+    production = true;
+    bypassCache = true;
+    reconstructLock = true;
+  };
+  args = {
+    name = "matrix-recorder";
+    packageName = "matrix-recorder";
+    version = "0.0.6";
+    src = fetchgit {
+      url = "https://gitlab.com/argit/matrix-recorder/";
+      rev = "006b78c8a4ddc636be8f6f1e3875b13a4a6d2c7c";
+      sha256 = "0m3kzwbrxymwl6hr981q6fsf752fqxwzbpxryx25j4lkwc23nmj3";
+    };
+    dependencies = [
+      sources."abbrev-1.1.1"
+      sources."ajv-6.10.2"
+      sources."another-json-0.2.0"
+      sources."ansi-regex-2.1.1"
+      sources."aproba-1.2.0"
+      sources."are-we-there-yet-1.1.5"
+      sources."asn1-0.2.4"
+      sources."assert-plus-1.0.0"
+      sources."asynckit-0.4.0"
+      sources."aws-sign2-0.7.0"
+      sources."aws4-1.9.0"
+      sources."balanced-match-1.0.0"
+      sources."bcrypt-pbkdf-1.0.2"
+      sources."brace-expansion-1.1.11"
+      sources."browser-request-0.3.3"
+      sources."caseless-0.12.0"
+      sources."chownr-1.1.3"
+      sources."code-point-at-1.1.0"
+      sources."combined-stream-1.0.8"
+      sources."concat-map-0.0.1"
+      sources."console-control-strings-1.1.0"
+      sources."core-util-is-1.0.2"
+      sources."dashdash-1.14.1"
+      sources."debug-3.2.6"
+      sources."deep-extend-0.6.0"
+      sources."delayed-stream-1.0.0"
+      sources."delegates-1.0.0"
+      sources."detect-libc-1.0.3"
+      sources."ecc-jsbn-0.1.2"
+      sources."encoding-0.1.12"
+      sources."extend-3.0.2"
+      sources."extsprintf-1.3.0"
+      sources."fast-deep-equal-2.0.1"
+      sources."fast-json-stable-stringify-2.0.0"
+      sources."forever-agent-0.6.1"
+      sources."form-data-2.3.3"
+      sources."fs-minipass-1.2.7"
+      sources."fs.realpath-1.0.0"
+      sources."gauge-2.7.4"
+      sources."getpass-0.1.7"
+      sources."glob-7.1.6"
+      sources."graceful-fs-4.2.3"
+      sources."har-schema-2.0.0"
+      sources."har-validator-5.1.3"
+      sources."has-unicode-2.0.1"
+      sources."http-signature-1.2.0"
+      sources."iconv-lite-0.4.24"
+      sources."ignore-walk-3.0.3"
+      sources."imurmurhash-0.1.4"
+      sources."inflight-1.0.6"
+      sources."inherits-2.0.4"
+      sources."ini-1.3.5"
+      sources."is-fullwidth-code-point-1.0.0"
+      sources."is-stream-1.1.0"
+      sources."is-typedarray-1.0.0"
+      sources."isarray-1.0.0"
+      sources."isstream-0.1.2"
+      sources."jsbn-0.1.1"
+      sources."json-schema-0.2.3"
+      sources."json-schema-traverse-0.4.1"
+      sources."json-stringify-safe-5.0.1"
+      sources."jsprim-1.4.1"
+      sources."marked-0.6.3"
+      sources."matrix-js-sdk-0.7.13"
+      sources."mime-db-1.42.0"
+      sources."mime-types-2.1.25"
+      sources."minimatch-3.0.4"
+      sources."minimist-0.0.8"
+      sources."minipass-2.9.0"
+      sources."minizlib-1.3.3"
+      sources."mkdirp-0.5.1"
+      sources."ms-2.1.2"
+      sources."mustache-2.3.2"
+      sources."nan-2.14.0"
+      sources."needle-2.4.0"
+      sources."node-fetch-1.7.3"
+      sources."node-localstorage-1.3.1"
+      sources."node-pre-gyp-0.11.0"
+      sources."nopt-4.0.1"
+      sources."npm-bundled-1.0.6"
+      sources."npm-packlist-1.4.6"
+      sources."npmlog-4.1.2"
+      sources."number-is-nan-1.0.1"
+      sources."oauth-sign-0.9.0"
+      sources."object-assign-4.1.1"
+      sources."olm-https://packages.matrix.org/npm/olm/olm-2.3.0.tgz"
+      sources."once-1.4.0"
+      sources."os-homedir-1.0.2"
+      sources."os-tmpdir-1.0.2"
+      sources."osenv-0.1.5"
+      sources."path-is-absolute-1.0.1"
+      sources."performance-now-2.1.0"
+      sources."process-nextick-args-2.0.1"
+      sources."psl-1.4.0"
+      sources."punycode-2.1.1"
+      sources."q-1.5.1"
+      sources."qs-6.5.2"
+      (sources."rc-1.2.8" // {
+        dependencies = [
+          sources."minimist-1.2.0"
+        ];
+      })
+      (sources."readable-stream-2.3.6" // {
+        dependencies = [
+          sources."safe-buffer-5.1.2"
+        ];
+      })
+      sources."request-2.88.0"
+      sources."rimraf-2.7.1"
+      sources."safe-buffer-5.2.0"
+      sources."safer-buffer-2.1.2"
+      sources."sax-1.2.4"
+      sources."semver-5.7.1"
+      sources."set-blocking-2.0.0"
+      sources."signal-exit-3.0.2"
+      sources."slide-1.1.6"
+      sources."sqlite3-4.1.0"
+      sources."sshpk-1.16.1"
+      sources."string-width-1.0.2"
+      (sources."string_decoder-1.1.1" // {
+        dependencies = [
+          sources."safe-buffer-5.1.2"
+        ];
+      })
+      sources."strip-ansi-3.0.1"
+      sources."strip-json-comments-2.0.1"
+      sources."tar-4.4.13"
+      (sources."tough-cookie-2.4.3" // {
+        dependencies = [
+          sources."punycode-1.4.1"
+        ];
+      })
+      sources."tunnel-agent-0.6.0"
+      sources."tweetnacl-0.14.5"
+      sources."uri-js-4.2.2"
+      sources."util-deprecate-1.0.2"
+      sources."uuid-3.3.3"
+      sources."verror-1.10.0"
+      sources."wide-align-1.1.3"
+      sources."wrappy-1.0.2"
+      sources."write-file-atomic-1.3.4"
+      sources."yallist-3.1.1"
+    ];
+    buildInputs = globalBuildInputs;
+    meta = {
+      description = "A recorder that can record Matrix rooms you are a member of (including E2E-encrypted rooms).";
+      license = "MIT";
+    };
+    production = true;
+    bypassCache = true;
+    reconstructLock = true;
+  };
+in
+{
+  tarball = nodeEnv.buildNodeSourceDist args;
+  package = nodeEnv.buildNodePackage args;
+  shell = nodeEnv.buildNodeShell args;
+  inherit node-pre-gyp;
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/package.json b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/package.json
new file mode 100644
index 000000000000..fc03d636ad21
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrix-recorder/package.json
@@ -0,0 +1,27 @@
+{
+  "name": "matrix-recorder",
+  "version": "0.0.6",
+  "description": "A recorder that can record Matrix rooms you are a member of (including E2E-encrypted rooms).",
+  "author": "Hello Matrix <hello@hello-matrix.net>",
+  "main": "matrix-recorder.js",
+  "scripts": {
+    "start": "node matrix-recorder.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://gitlab.com/argit/matrix-recorder.git"
+  },
+  "dependencies": {
+    "marked": "^0.6.2",
+    "matrix-js-sdk": "^0.7.13",
+    "mime-types": "^2.1.14",
+    "mustache": "^2.3.0",
+    "node-fetch": "^1.6.3",
+    "node-localstorage": "^1.3.0",
+    "sqlite3": "^4.0.7",
+    "olm": "https://packages.matrix.org/npm/olm/olm-2.3.0.tgz"
+  },
+  "license": "MIT",
+  "optionalDependencies": {
+  }
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/matrixcli/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/matrixcli/default.nix
new file mode 100644
index 000000000000..7e88a77193b6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/matrixcli/default.nix
@@ -0,0 +1,53 @@
+{ lib, fetchgit
+  , buildPythonApplication, buildPythonPackage
+  , pygobject3, pytest-runner, requests, responses, pytest, python-olm
+  , canonicaljson, olm
+}:
+let
+  mainsrc = fetchgit {
+    url = "https://github.com/saadnpq/matrixcli";
+    rev = "61ebde173ca2f77185c261c2b7f6db297ca89863";
+    sha256 = "0xcjjy2xwlcixr9fwgzcfjjkivqpk104h7dslfa7lz9jq9pzqzvq";
+    fetchSubmodules = true;
+  };
+
+  sdk = buildPythonPackage rec {
+    name = "${pname}-${version}";
+    pname = "matrix-python-sdk-matrixcli";
+    version = "0.0.2019-08-15";
+
+    src = "${mainsrc}/matrix-python-sdk/";
+
+    propagatedBuildInputs = [
+      requests responses olm python-olm canonicaljson
+      pytest-runner pytest
+    ];
+
+    doCheck = false;
+    doInstallCheck = false;
+
+    meta = {
+      license = lib.licenses.asl20;
+      description = "Fork of Matrix Python SDK";
+      platforms = lib.platforms.linux;
+    };
+  };
+
+in
+buildPythonApplication rec {
+  name = "${pname}-${version}";
+  pname = "matrixcli";
+  version = "0.0.2019-08-15";
+
+  src = mainsrc;
+
+  propagatedBuildInputs = [pygobject3 sdk];
+
+  meta = {
+    description = "CLI client for Matrix";
+    license = lib.licenses.gpl3;
+    maintainers = [lib.maintainers.raskin];
+    platforms = lib.platforms.linux;
+    homepage = "https://github.com/saadnpq/matrixcli";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mattermost-desktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mattermost-desktop/default.nix
new file mode 100644
index 000000000000..5b14fba5b420
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mattermost-desktop/default.nix
@@ -0,0 +1,104 @@
+{ lib, stdenv, fetchurl, gnome2, gtk3, pango, atk, cairo, gdk-pixbuf, glib,
+freetype, fontconfig, dbus, libX11, xorg, libXi, libXcursor, libXdamage,
+libXrandr, libXcomposite, libXext, libXfixes, libXrender, libXtst,
+libXScrnSaver, nss, nspr, alsa-lib, cups, expat, udev, wrapGAppsHook,
+hicolor-icon-theme, libuuid, at-spi2-core, at-spi2-atk }:
+
+let
+  rpath = lib.makeLibraryPath [
+    alsa-lib
+    at-spi2-atk
+    at-spi2-core
+    atk
+    cairo
+    cups
+    dbus
+    expat
+    fontconfig
+    freetype
+    gdk-pixbuf
+    glib
+    gnome2.GConf
+    gtk3
+    pango
+    libuuid
+    libX11
+    libXScrnSaver
+    libXcomposite
+    libXcursor
+    libXdamage
+    libXext
+    libXfixes
+    libXi
+    libXrandr
+    libXrender
+    libXtst
+    nspr
+    nss
+    stdenv.cc.cc
+    udev
+    xorg.libxcb
+  ];
+
+in
+  stdenv.mkDerivation rec {
+    pname = "mattermost-desktop";
+    version = "4.6.2";
+
+    src =
+      if stdenv.hostPlatform.system == "x86_64-linux" then
+        fetchurl {
+          url = "https://releases.mattermost.com/desktop/${version}/${pname}-${version}-linux-x64.tar.gz";
+          sha256 = "0i836bc0gx375a9fm2cdxg84k03zhpx1z6jqxndf2m8pkfsblc3x";
+        }
+      else if stdenv.hostPlatform.system == "i686-linux" then
+        fetchurl {
+          url = "https://releases.mattermost.com/desktop/${version}/${pname}-${version}-linux-ia32.tar.gz";
+          sha256 = "04jv9hkmkh0jipv0fjdprnp5kmkjvf3c0fah6ysi21wmnmp5ab3m";
+        }
+      else
+        throw "Mattermost-Desktop is not currently supported on ${stdenv.hostPlatform.system}";
+
+    dontBuild = true;
+    dontConfigure = true;
+    dontPatchELF = true;
+
+    nativeBuildInputs = [ wrapGAppsHook ];
+
+    buildInputs = [ gtk3 hicolor-icon-theme ];
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/share/mattermost-desktop
+      cp -R . $out/share/mattermost-desktop
+
+      mkdir -p "$out/bin"
+      ln -s $out/share/mattermost-desktop/mattermost-desktop \
+        $out/bin/mattermost-desktop
+
+      patchShebangs $out/share/mattermost-desktop/create_desktop_file.sh
+      $out/share/mattermost-desktop/create_desktop_file.sh
+      rm $out/share/mattermost-desktop/create_desktop_file.sh
+      mkdir -p $out/share/applications
+      mv Mattermost.desktop $out/share/applications/Mattermost.desktop
+      substituteInPlace \
+        $out/share/applications/Mattermost.desktop \
+        --replace /share/mattermost-desktop/mattermost-desktop /bin/mattermost-desktop
+
+      patchelf \
+        --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+        --set-rpath "${rpath}:$out/share/mattermost-desktop" \
+        $out/share/mattermost-desktop/mattermost-desktop
+
+      runHook postInstall
+    '';
+
+    meta = with lib; {
+      description = "Mattermost Desktop client";
+      homepage    = "https://about.mattermost.com/";
+      license     = licenses.asl20;
+      platforms   = [ "x86_64-linux" "i686-linux" ];
+      maintainers = [ maintainers.joko ];
+    };
+  }
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mcabber/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mcabber/default.nix
new file mode 100644
index 000000000000..7c5bff940848
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mcabber/default.nix
@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchurl, openssl, ncurses, pkg-config, glib, loudmouth, libotr
+, gpgme
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mcabber";
+  version = "1.1.2";
+
+  src = fetchurl {
+    url = "https://mcabber.com/files/mcabber-${version}.tar.bz2";
+    sha256 = "0q1i5acyghsmzas88qswvki8kkk2nfpr8zapgnxbcd3lwcxl38f4";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ openssl ncurses glib loudmouth libotr gpgme ];
+
+  configureFlags = [
+    "--with-openssl=${openssl.dev}"
+    "--enable-modules"
+    "--enable-otr"
+  ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    homepage = "http://mcabber.com/";
+    description = "Small Jabber console client";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ pSub ];
+    platforms = with platforms; linux;
+    updateWalker = true;
+    downloadPage = "http://mcabber.com/files/";
+    downloadURLRegexp = "mcabber-[0-9.]+[.]tar[.][a-z0-9]+$";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/default.nix
new file mode 100644
index 000000000000..c20ec46f266d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/default.nix
@@ -0,0 +1,160 @@
+{ lib
+, stdenv
+, fetchurl
+, bundlerEnv
+, alsa-utils
+, atk
+, copyDesktopItems
+, gobject-introspection
+, gtk2
+, ruby
+, libicns
+, libnotify
+, makeDesktopItem
+, which
+, wrapGAppsHook
+, writeText
+}:
+
+let
+  # NOTE: $out may have different values depending on context
+  mikutterPaths = rec {
+    optPrefixDir = "$out/opt/mikutter";
+    appPrefixDir = "$out/Applications/mikutter.app/Contents";
+    appBinDir = "${appPrefixDir}/MacOS";
+    appResourceDir = "${appPrefixDir}/Resources";
+    iconPath = "${optPrefixDir}/core/skin/data/icon.png";
+  };
+
+  gems = bundlerEnv {
+    name = "mikutter-gems"; # leave the version out to enable package reuse
+    gemdir = ./deps;
+    groups = [ "default" "plugin" ];
+    inherit ruby;
+
+    # Avoid the following error:
+    # > `<module:Moneta>': uninitialized constant Moneta::Builder (NameError)
+    #
+    # Related:
+    # https://github.com/NixOS/nixpkgs/pull/76510
+    # https://github.com/NixOS/nixpkgs/pull/76765
+    # https://github.com/NixOS/nixpkgs/issues/83442
+    # https://github.com/NixOS/nixpkgs/issues/106545
+    copyGemFiles = true;
+  };
+
+  mkDesktopItem = { description }:
+    makeDesktopItem {
+      name = "mikutter";
+      desktopName = "mikutter";
+      exec = "mikutter";
+      icon = "mikutter";
+      categories = "Network;";
+      comment = description;
+      extraDesktopEntries.Keywords = "Mastodon;";
+    };
+
+  mkInfoPlist = { version }:
+    writeText "Info.plist" (lib.generators.toPlist { } {
+      CFBundleName = "mikutter";
+      CFBundleDisplayName = "mikutter";
+      CFBundleExecutable = "mikutter";
+      CFBundleIconFile = "mikutter";
+      CFBundleIdentifier = "net.hachune.mikutter";
+      CFBundleInfoDictionaryVersion = "6.0";
+      CFBundlePackageType = "APPL";
+      CFBundleVersion = version;
+      CFBundleShortVersionString = version;
+    });
+
+  inherit (gems) wrappedRuby;
+in
+with mikutterPaths; stdenv.mkDerivation rec {
+  pname = "mikutter";
+  version = "4.1.4";
+
+  src = fetchurl {
+    url = "https://mikutter.hachune.net/bin/mikutter-${version}.tar.gz";
+    sha256 = "05253nz4i1lmnq6czj48qdab2ny4vx2mznj6nsn2l1m2z6zqkwk3";
+  };
+
+  nativeBuildInputs = [ copyDesktopItems wrapGAppsHook ]
+    ++ lib.optionals stdenv.isDarwin [ libicns ];
+  buildInputs = [
+    atk
+    gtk2
+    gobject-introspection
+    libnotify
+    which # some plugins use it at runtime
+    wrappedRuby
+  ] ++ lib.optionals stdenv.isLinux [ alsa-utils ];
+
+  scriptPath = lib.makeBinPath (
+    [ wrappedRuby libnotify which ]
+    ++ lib.optionals stdenv.isLinux [ alsa-utils ]
+  );
+
+  postUnpack = ''
+    rm -rf vendor
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin ${optPrefixDir}
+
+    install -Dm644 README $out/share/doc/mikutter/README
+    install -Dm644 LICENSE $out/share/doc/mikutter/LICENSE
+    rm -r README LICENSE deployment
+
+    cp -r . ${optPrefixDir}
+
+    gappsWrapperArgsHook # FIXME: currently runs at preFixup
+    wrapGApp ${optPrefixDir}/mikutter.rb \
+      --prefix PATH : "${scriptPath}" \
+      --set DISABLE_BUNDLER_SETUP 1
+    mv ${optPrefixDir}/mikutter.rb $out/bin/mikutter
+
+    install -Dm644 ${iconPath} $out/share/icons/hicolor/256x256/apps/mikutter.png
+
+    runHook postInstall
+  '';
+
+  postInstall =
+    let
+      infoPlist = mkInfoPlist { inherit version; };
+    in
+    lib.optionalString stdenv.isDarwin ''
+      mkdir -p ${appBinDir} ${appResourceDir}
+      install -Dm644 ${infoPlist} ${appPrefixDir}/Info.plist
+      ln -s $out/bin/mikutter ${appBinDir}/mikutter
+      png2icns ${appResourceDir}/mikutter.icns ${iconPath}
+    '';
+
+  installCheckPhase = ''
+    runHook preInstallCheck
+
+    testDir="$(mktemp -d)"
+    install -Dm644 ${./test_plugin.rb} "$testDir/plugin/test_plugin/test_plugin.rb"
+
+    $out/bin/mikutter --confroot="$testDir" --plugin=test_plugin --debug
+
+    runHook postInstallCheck
+  '';
+
+  desktopItems = [
+    (mkDesktopItem { inherit (meta) description; })
+  ];
+
+  doInstallCheck = true;
+  dontWrapGApps = true; # the target is placed outside of bin/
+
+  passthru.updateScript = [ ./update.sh version (toString ./.) ];
+
+  meta = with lib; {
+    description = "An extensible Mastodon client";
+    homepage = "https://mikutter.hachune.net";
+    platforms = ruby.meta.platforms;
+    license = licenses.mit;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile
new file mode 100644
index 000000000000..fbe6a2f29c5d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile
@@ -0,0 +1,39 @@
+alias __source_distinct__ source
+def source(url)
+  @loaded ||= {}
+  unless @loaded[url]
+    @loaded[url] = true
+    __source_distinct__(url) end end
+
+source 'https://rubygems.org'
+
+ruby '>= 2.5.0'
+
+group :default do
+  gem 'addressable','>= 2.7.0', '< 2.8'
+  gem 'delayer','>= 1.1.2', '< 2.0'
+  gem 'delayer-deferred','>= 2.2.0', '< 3.0'
+  gem 'diva','>= 1.0.2', '< 2.0'
+  gem 'memoist','>= 0.16.2', '< 0.17'
+  gem 'oauth','>= 0.5.4'
+  gem 'pluggaloid','>= 1.5.0', '< 2.0'
+  gem 'typed-array','>= 0.1.2', '< 0.2'
+end
+
+group :test do
+  gem 'test-unit','>= 3.3.4', '< 4.0'
+  gem 'rake','>= 13.0.1'
+  gem 'mocha','>= 1.11.1'
+  gem 'webmock','>= 3.7.6'
+  gem 'ruby-prof','>= 1.1.0'
+end
+
+
+group :plugin do
+  Dir.glob(File.expand_path(File.join(__dir__, 'plugin/*/Gemfile'))){ |path|
+    eval File.open(path).read
+  }
+  Dir.glob(File.join(File.expand_path(ENV['MIKUTTER_CONFROOT'] || '~/.mikutter'), 'plugin/*/Gemfile')){ |path|
+    eval File.open(path).read
+  }
+end
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile.lock b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile.lock
new file mode 100644
index 000000000000..92568056d52a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/Gemfile.lock
@@ -0,0 +1,101 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    atk (3.4.1)
+      glib2 (= 3.4.1)
+    cairo (1.17.5)
+      native-package-installer (>= 1.0.3)
+      pkg-config (>= 1.2.2)
+      red-colors
+    cairo-gobject (3.4.1)
+      cairo (>= 1.16.2)
+      glib2 (= 3.4.1)
+    crack (0.4.5)
+      rexml
+    delayer (1.2.0)
+    delayer-deferred (2.2.0)
+      delayer (>= 1.1.2, < 2.0)
+    diva (1.0.2)
+      addressable (>= 2.5.2, < 2.8)
+    gdk_pixbuf2 (3.4.1)
+      gio2 (= 3.4.1)
+    gettext (3.3.7)
+      locale (>= 2.0.5)
+      text (>= 1.3.0)
+    gio2 (3.4.1)
+      gobject-introspection (= 3.4.1)
+    glib2 (3.4.1)
+      native-package-installer (>= 1.0.3)
+      pkg-config (>= 1.3.5)
+    gobject-introspection (3.4.1)
+      glib2 (= 3.4.1)
+    gtk2 (3.4.1)
+      atk (= 3.4.1)
+      gdk_pixbuf2 (= 3.4.1)
+      pango (= 3.4.1)
+    hashdiff (1.0.1)
+    httpclient (2.8.3)
+    instance_storage (1.0.0)
+    locale (2.1.3)
+    memoist (0.16.2)
+    mini_portile2 (2.5.0)
+    mocha (1.12.0)
+    moneta (1.4.1)
+    native-package-installer (1.1.1)
+    nokogiri (1.11.3)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    oauth (0.5.6)
+    pango (3.4.1)
+      cairo-gobject (= 3.4.1)
+      gobject-introspection (= 3.4.1)
+    pkg-config (1.4.6)
+    pluggaloid (1.5.0)
+      delayer (>= 1.1.0, < 2.0)
+      instance_storage (>= 1.0.0, < 2.0.0)
+    power_assert (2.0.0)
+    public_suffix (4.0.6)
+    racc (1.5.2)
+    rake (13.0.3)
+    red-colors (0.1.1)
+    rexml (3.2.5)
+    ruby-prof (1.4.3)
+    test-unit (3.4.0)
+      power_assert
+    text (1.3.1)
+    typed-array (0.1.2)
+    webmock (3.12.2)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  addressable (>= 2.7.0, < 2.8)
+  delayer (>= 1.1.2, < 2.0)
+  delayer-deferred (>= 2.2.0, < 3.0)
+  diva (>= 1.0.2, < 2.0)
+  gettext (>= 3.3.5, < 3.4)
+  gtk2 (= 3.4.1)
+  httpclient
+  memoist (>= 0.16.2, < 0.17)
+  mocha (>= 1.11.1)
+  moneta
+  nokogiri
+  oauth (>= 0.5.4)
+  pluggaloid (>= 1.5.0, < 2.0)
+  rake (>= 13.0.1)
+  ruby-prof (>= 1.1.0)
+  test-unit (>= 3.3.4, < 4.0)
+  typed-array (>= 0.1.2, < 0.2)
+  webmock (>= 3.7.6)
+
+RUBY VERSION
+   ruby 2.6.6p146
+
+BUNDLED WITH
+   2.1.4
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/gemset.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/gemset.nix
new file mode 100644
index 000000000000..b45a36c6fec0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/gemset.nix
@@ -0,0 +1,410 @@
+{
+  addressable = {
+    dependencies = ["public_suffix"];
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1fvchp2rhp2rmigx7qglf69xvjqvzq7x0g49naliw29r2bz656sy";
+      type = "gem";
+    };
+    version = "2.7.0";
+  };
+  atk = {
+    dependencies = ["glib2"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0a8q9a1f6x4gy55p8cf52a22bnpjgn18ad9n959x0f4gybbhs948";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  cairo = {
+    dependencies = ["native-package-installer" "pkg-config" "red-colors"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0vbj9szp2xbnxqan8hppip8vm9fxpcmpx745y5fvg2scdh9f0p7s";
+      type = "gem";
+    };
+    version = "1.17.5";
+  };
+  cairo-gobject = {
+    dependencies = ["cairo" "glib2"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0gkxdfslcvrwrs48giilji3bgxd5bwijwq33p9h00r10jzfg2028";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  crack = {
+    dependencies = ["rexml"];
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1cr1kfpw3vkhysvkk3wg7c54m75kd68mbm9rs5azdjdq57xid13r";
+      type = "gem";
+    };
+    version = "0.4.5";
+  };
+  delayer = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0iqf4i18i8rk3x7qgvkhbiqskf0xzdf733fjimrq6xkag2mq60bl";
+      type = "gem";
+    };
+    version = "1.2.0";
+  };
+  delayer-deferred = {
+    dependencies = ["delayer"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0i2das3ncssacpqdgaf4as77vrxm7jfiizaja884fqv4rzv6s2sv";
+      type = "gem";
+    };
+    version = "2.2.0";
+  };
+  diva = {
+    dependencies = ["addressable"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "05wl4wg57vvng4nrp4lzjq148v908xzq092kq93phwvyxs7jnw2g";
+      type = "gem";
+    };
+    version = "1.0.2";
+  };
+  gdk_pixbuf2 = {
+    dependencies = ["gio2"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0194gzn0kialfh0j7crllvp808r64sg6dh297x69b0av21ar5pam";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  gettext = {
+    dependencies = ["locale" "text"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1fqlwq7i8ck1fjyhn19q3skvgrbz44q7gq51mlr0qym5rkj5f6rn";
+      type = "gem";
+    };
+    version = "3.3.7";
+  };
+  gio2 = {
+    dependencies = ["gobject-introspection"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1l3jpgbdvb55xhcmpkcqgwx5068dfyi8kijfvzhbqh96ng0p1m7g";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  glib2 = {
+    dependencies = ["native-package-installer" "pkg-config"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "18clyn0fp0h5alnkf9i2bqd6wvl78h468pdbzs1csqnba8vw4q1c";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  gobject-introspection = {
+    dependencies = ["glib2"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1a3x8qiisbax3x0izj8l5w66r53ba5ma53ax2jhdbhbvaxx3d02n";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  gtk2 = {
+    dependencies = ["atk" "gdk_pixbuf2" "pango"];
+    groups = ["plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "17az8g0n1yzz90kdbjg2hpabi04qccda7v6lin76bs637ivfg2md";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  hashdiff = {
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1nynpl0xbj0nphqx1qlmyggq58ms1phf5i03hk64wcc0a17x1m1c";
+      type = "gem";
+    };
+    version = "1.0.1";
+  };
+  httpclient = {
+    groups = ["plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "19mxmvghp7ki3klsxwrlwr431li7hm1lczhhj8z4qihl2acy8l99";
+      type = "gem";
+    };
+    version = "2.8.3";
+  };
+  instance_storage = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "08nf5fhq9dckq9lmaklxydq0hrlfi7phk66gr3bggxg45zd687pl";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  locale = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0997465kxvpxm92fiwc2b16l49mngk7b68g5k35ify0m3q0yxpdn";
+      type = "gem";
+    };
+    version = "2.1.3";
+  };
+  memoist = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0i9wpzix3sjhf6d9zw60dm4371iq8kyz7ckh2qapan2vyaim6b55";
+      type = "gem";
+    };
+    version = "0.16.2";
+  };
+  mini_portile2 = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1hdbpmamx8js53yk3h8cqy12kgv6ca06k0c9n3pxh6b6cjfs19x7";
+      type = "gem";
+    };
+    version = "2.5.0";
+  };
+  mocha = {
+    groups = ["test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "05yw6rwgjppq116jgqfg4pv4bql3ci4r2fmmg0m2c3sqib1bq41a";
+      type = "gem";
+    };
+    version = "1.12.0";
+  };
+  moneta = {
+    groups = ["plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0z25b4yysvnf2hi9jxnsiv3fvnicnzr2m70ci231av5093jfknc6";
+      type = "gem";
+    };
+    version = "1.4.1";
+  };
+  native-package-installer = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1ww1mq41q7rda975byjmq5dk8k13v8dawvm33370pbkrymd8syp8";
+      type = "gem";
+    };
+    version = "1.1.1";
+  };
+  nokogiri = {
+    dependencies = ["mini_portile2" "racc"];
+    groups = ["plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "19d78mdg2lbz9jb4ph6nk783c9jbsdm8rnllwhga6pd53xffp6x0";
+      type = "gem";
+    };
+    version = "1.11.3";
+  };
+  oauth = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1zwd6v39yqfdrpg1p3d9jvzs9ljg55ana2p06m0l7qn5w0lgx1a0";
+      type = "gem";
+    };
+    version = "0.5.6";
+  };
+  pango = {
+    dependencies = ["cairo-gobject" "gobject-introspection"];
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1d0cn50qgpifrcv8qx72wi6l9xalw3ryngbfmm9xpg9vx5rl1qbp";
+      type = "gem";
+    };
+    version = "3.4.1";
+  };
+  pkg-config = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1mjjy1grxr64znkffxsvprcckbrrnm40b6gbllnbm7jxslbr3gjl";
+      type = "gem";
+    };
+    version = "1.4.6";
+  };
+  pluggaloid = {
+    dependencies = ["delayer" "instance_storage"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0m3f940lf1bg01jin22by7hg9hs43y995isgcyqb6vbvlv51zj11";
+      type = "gem";
+    };
+    version = "1.5.0";
+  };
+  power_assert = {
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "172qfmzwxdf82bmwgcb13hnz9i3p6i2s2nijxnx6r63kn3drjppr";
+      type = "gem";
+    };
+    version = "2.0.0";
+  };
+  public_suffix = {
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1xqcgkl7bwws1qrlnmxgh8g4g9m10vg60bhlw40fplninb3ng6d9";
+      type = "gem";
+    };
+    version = "4.0.6";
+  };
+  racc = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "178k7r0xn689spviqzhvazzvxfq6fyjldxb3ywjbgipbfi4s8j1g";
+      type = "gem";
+    };
+    version = "1.5.2";
+  };
+  rake = {
+    groups = ["test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1iik52mf9ky4cgs38fp2m8r6skdkq1yz23vh18lk95fhbcxb6a67";
+      type = "gem";
+    };
+    version = "13.0.3";
+  };
+  red-colors = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ar2k7zvhr1215jx5di29hkg5h1798f1gypmq6v0sy9v35w6ijca";
+      type = "gem";
+    };
+    version = "0.1.1";
+  };
+  rexml = {
+    groups = ["default" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "08ximcyfjy94pm1rhcx04ny1vx2sk0x4y185gzn86yfsbzwkng53";
+      type = "gem";
+    };
+    version = "3.2.5";
+  };
+  ruby-prof = {
+    groups = ["test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1r3xalp91l07m0cwllcxjzg6nkviiqnxkcbgg5qnzsdji6rgy65m";
+      type = "gem";
+    };
+    version = "1.4.3";
+  };
+  test-unit = {
+    dependencies = ["power_assert"];
+    groups = ["test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1h0c323zfn4hdida4g58h8wnlh4kax438gyxlw20dd78kcp01i8m";
+      type = "gem";
+    };
+    version = "3.4.0";
+  };
+  text = {
+    groups = ["default" "plugin"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1x6kkmsr49y3rnrin91rv8mpc3dhrf3ql08kbccw8yffq61brfrg";
+      type = "gem";
+    };
+    version = "1.3.1";
+  };
+  typed-array = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0qlv2rnkin9rwkgjx3k5qvc17m0m7jf5cdirw3wxbjnw5kga27w9";
+      type = "gem";
+    };
+    version = "0.1.2";
+  };
+  webmock = {
+    dependencies = ["addressable" "crack" "hashdiff"];
+    groups = ["test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "038igpmkpmn0nw0k7s4db8x88af1nwcy7wzh9m9c9q4p74h7rii0";
+      type = "gem";
+    };
+    version = "3.12.2";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/gtk/Gemfile b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/gtk/Gemfile
new file mode 100644
index 000000000000..3306c29e3cbf
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/gtk/Gemfile
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+gem 'gtk2', '3.4.1'
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/image_file_cache/Gemfile b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/image_file_cache/Gemfile
new file mode 100644
index 000000000000..f86005fef078
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/image_file_cache/Gemfile
@@ -0,0 +1 @@
+gem 'moneta'
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/photo_support/Gemfile b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/photo_support/Gemfile
new file mode 100644
index 000000000000..66016eee9c46
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/photo_support/Gemfile
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+gem 'nokogiri'
+gem 'httpclient'
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/uitranslator/Gemfile b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/uitranslator/Gemfile
new file mode 100644
index 000000000000..08b4831dfc66
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/deps/plugin/uitranslator/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+group :default do
+  gem 'gettext', '>= 3.3.5', '< 3.4'
+end
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/test_plugin.rb b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/test_plugin.rb
new file mode 100644
index 000000000000..b19c15cd304f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/test_plugin.rb
@@ -0,0 +1,10 @@
+# Tests mikutter's event system.
+
+Plugin.create(:test_plugin) do
+  require 'logger'
+  Delayer.new do
+    log = Logger.new(STDOUT)
+    log.info("loaded test_plugin")
+    exit
+  end
+end
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/update.sh
new file mode 100755
index 000000000000..142fd8ca9424
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mikutter/update.sh
@@ -0,0 +1,51 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bundler bundix curl jq common-updater-scripts
+# shellcheck shell=bash
+
+set -euo pipefail
+
+main() {
+    local currentVer="$1"
+    local scriptDir="$2"
+    local latestVer
+    local srcDir
+
+    if [[ -z "$UPDATE_NIX_ATTR_PATH" ]]; then
+        echo "[ERROR] Please run the following instead:" >&2
+        echo >&2
+        echo "    % nix-shell maintainers/scripts/update.nix --argstr path mikutter" >&2
+        exit 1
+    fi
+
+    latestVer="$(queryLatestVersion)"
+    if [[ "$currentVer" == "$latestVer" ]]; then
+        echo "[INFO] mikutter is already up to date" >&2
+        exit
+    fi
+
+    update-source-version "$UPDATE_NIX_ATTR_PATH" "$latestVer"
+
+    cd "$scriptDir"
+
+    rm -rf deps
+    mkdir deps
+    cd deps
+
+    srcDir="$(nix-build ../../../../../.. --no-out-link -A mikutter.src)"
+    tar xvf "$srcDir" --strip-components=1
+    find . -not -name Gemfile -exec rm {} \;
+    find . -type d -exec rmdir -p --ignore-fail-on-non-empty {} \; || true
+
+    bundle lock
+    bundix
+}
+
+queryLatestVersion() {
+    curl -sS 'https://mikutter.hachune.net/download.json?count=1' \
+        | jq -r '.[].version_string' \
+        | head -n1
+}
+
+main "$@"
+
+# vim:set ft=bash:
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mirage/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mirage/default.nix
new file mode 100644
index 000000000000..db30ede8a108
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mirage/default.nix
@@ -0,0 +1,58 @@
+{ lib, stdenv, mkDerivation, fetchFromGitHub
+, qmake, pkg-config, olm, wrapQtAppsHook
+, qtbase, qtquickcontrols2, qtkeychain, qtmultimedia, qtgraphicaleffects
+, python3Packages, pyotherside, libXScrnSaver
+}:
+
+let
+  pypkgs = with python3Packages; [
+    aiofiles filetype matrix-nio appdirs cairosvg
+    pymediainfo setuptools html-sanitizer mistune blist
+    pyotherside
+  ];
+in
+mkDerivation rec {
+  pname = "mirage";
+  version = "0.6.4";
+
+  src = fetchFromGitHub {
+    owner = "mirukana";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "15x0x2rf4fzsd0zr84fq3j3ddzkgc5il8s54jpxk8wl4ah03g4nv";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ pkg-config qmake wrapQtAppsHook python3Packages.wrapPython ];
+
+  buildInputs = [
+    qtbase qtmultimedia
+    qtquickcontrols2
+    qtkeychain qtgraphicaleffects
+    olm pyotherside
+    libXScrnSaver
+  ];
+
+  propagatedBuildInputs = pypkgs;
+
+  pythonPath = pypkgs;
+
+  qmakeFlags = [ "PREFIX=${placeholder "out"}" "CONFIG+=qtquickcompiler" ];
+
+  dontWrapQtApps = true;
+  postInstall = ''
+    buildPythonPath "$out $pythonPath"
+    wrapProgram $out/bin/mirage \
+      --prefix PYTHONPATH : "$PYTHONPATH" \
+      "''${qtWrapperArgs[@]}"
+    '';
+
+  meta = with lib; {
+    description = "A fancy, customizable, keyboard-operable Qt/QML+Python Matrix chat client for encrypted and decentralized communication";
+    homepage = "https://github.com/mirukana/mirage";
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ colemickens ];
+    broken = stdenv.isDarwin;
+    inherit (qtbase.meta) platforms;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/mm/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/mm/default.nix
new file mode 100644
index 000000000000..c8f24e72a9ae
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/mm/default.nix
@@ -0,0 +1,21 @@
+{ lib, buildGoModule, fetchgit }:
+
+buildGoModule {
+  pname = "mm";
+  version = "2020.11.17";
+
+  src = fetchgit {
+    url = "https://git.lost.host/meutraa/mm.git";
+    rev = "e5fa8eeb845aac8f28fc36013ee8a1dbe1e5710c";
+    sha256 = "sha256-SdD4EE/rc85H7xqKB/kU8XFsC63i1sVObPha/zrxFGk=";
+  };
+
+  vendorSha256 = "sha256-zJJ9PzQShv2iRNyCg1XVscbwjV9ZtMIojJDtXXm3rVM=";
+
+  meta = with lib; {
+    description = "A file system based matrix client";
+    homepage = "https://git.lost.host/meutraa/mm";
+    license = licenses.isc;
+    maintainers = with maintainers; [ meutraa ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/neochat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/neochat/default.nix
new file mode 100644
index 000000000000..b6706d647868
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/neochat/default.nix
@@ -0,0 +1,67 @@
+{ mkDerivation
+, lib
+, fetchFromGitLab
+, pkg-config
+, cmake
+, cmark
+, extra-cmake-modules
+, kconfig
+, kdbusaddons
+, ki18n
+, kirigami2
+, kitemmodels
+, knotifications
+, kquickimageedit
+, libpulseaudio
+, libquotient
+, libsecret
+, olm
+, qqc2-desktop-style
+, qtgraphicaleffects
+, qtkeychain
+, qtmultimedia
+, qtquickcontrols2
+}:
+
+mkDerivation rec {
+  pname = "neochat";
+  version = "1.2";
+
+  src = fetchFromGitLab {
+    domain = "invent.kde.org";
+    owner = "network";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-Kpv7BY/qS0A3xFlYFhz1RRNwQVsyhOTHHGDbWRTTv1I=";
+  };
+
+  nativeBuildInputs = [ cmake extra-cmake-modules pkg-config ];
+
+  buildInputs = [
+    cmark
+    kconfig
+    kdbusaddons
+    ki18n
+    kirigami2
+    kitemmodels
+    knotifications
+    kquickimageedit
+    libpulseaudio
+    libquotient
+    libsecret
+    olm
+    qtgraphicaleffects
+    qtkeychain
+    qtmultimedia
+    qtquickcontrols2
+    qqc2-desktop-style
+  ];
+
+  meta = with lib; {
+    description = "A client for matrix, the decentralized communication protocol.";
+    homepage = "https://apps.kde.org/en/neochat";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ mjlbach peterhoeg ];
+    platforms = with platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/nheko/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/nheko/default.nix
new file mode 100644
index 000000000000..b097864af431
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/nheko/default.nix
@@ -0,0 +1,91 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, fetchpatch
+, cmake
+, cmark
+, lmdb
+, lmdbxx
+, libsecret
+, mkDerivation
+, qtbase
+, qtkeychain
+, qtmacextras
+, qtmultimedia
+, qttools
+, qtquickcontrols2
+, qtgraphicaleffects
+, mtxclient
+, boost17x
+, spdlog
+, fmt
+, olm
+, pkg-config
+, nlohmann_json
+, voipSupport ? true
+, gst_all_1
+, libnice
+}:
+
+mkDerivation rec {
+  pname = "nheko";
+  version = "0.8.2";
+
+  src = fetchFromGitHub {
+    owner = "Nheko-Reborn";
+    repo = "nheko";
+    rev = "v${version}";
+    sha256 = "sha256-w4l91/W6F1FL+Q37qWSjYRHv4vad/10fxdKwfNeEwgw=";
+  };
+
+  nativeBuildInputs = [
+    lmdbxx
+    cmake
+    pkg-config
+  ];
+
+  buildInputs = [
+    nlohmann_json
+    mtxclient
+    olm
+    boost17x
+    libsecret
+    lmdb
+    spdlog
+    fmt
+    cmark
+    qtbase
+    qtmultimedia
+    qttools
+    qtquickcontrols2
+    qtgraphicaleffects
+    qtkeychain
+  ] ++ lib.optional stdenv.isDarwin qtmacextras
+    ++ lib.optionals voipSupport (with gst_all_1; [
+      gstreamer
+      gst-plugins-base
+      (gst-plugins-good.override { qt5Support = true; })
+      gst-plugins-bad
+      libnice
+    ]);
+
+  cmakeFlags = [
+    "-DCOMPILE_QML=ON" # see https://github.com/Nheko-Reborn/nheko/issues/389
+  ];
+
+  preFixup = lib.optionalString voipSupport ''
+    # add gstreamer plugins path to the wrapper
+    qtWrapperArgs+=(--prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0")
+  '';
+
+  meta = with lib; {
+    description = "Desktop client for the Matrix protocol";
+    homepage = "https://github.com/Nheko-Reborn/nheko";
+    maintainers = with maintainers; [ ekleog fpletz ];
+    platforms = platforms.all;
+    # Should be fixable if a higher clang version is used, see:
+    # https://github.com/NixOS/nixpkgs/pull/85922#issuecomment-619287177
+    broken = stdenv.targetPlatform.isDarwin;
+    license = licenses.gpl3Plus;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/oysttyer/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/oysttyer/default.nix
new file mode 100644
index 000000000000..33f3b90873d7
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/oysttyer/default.nix
@@ -0,0 +1,41 @@
+{ stdenv, lib, perl, perlPackages, coreutils,
+fetchFromGitHub, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "oysttyer";
+  version = "2.10.0";
+
+  src = fetchFromGitHub {
+    owner  = "oysttyer";
+    repo   = "oysttyer";
+    rev    = version;
+    sha256 = "0cm1hvi68iqgjsg15xdii271pklgzjn9j9afb1c460z71kgy3wz2";
+  };
+
+  buildInputs = [
+    perl
+    makeWrapper
+  ];
+
+  propagatedBuildInputs = with perlPackages; [
+    DateTimeFormatDateParse
+    TermReadLineTTYtter
+    TermReadKey
+  ];
+
+  installPhase = ''
+    ${coreutils}/bin/install -Dm755 \
+      oysttyer.pl \
+      $out/bin/oysttyer
+
+    wrapProgram $out/bin/oysttyer \
+      --prefix PERL5LIB : $PERL5LIB
+  '';
+
+  meta = with lib; {
+    description = "Perl Console Twitter Client";
+    homepage    = "http://oysttyer.github.io/";
+    maintainers = with maintainers; [ woffs ];
+    license = with licenses; [ ffsl ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
new file mode 100644
index 000000000000..153819fc8417
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
@@ -0,0 +1,72 @@
+{ lib, stdenv, buildPythonApplication, fetchFromGitHub, pythonOlder,
+  attrs, aiohttp, appdirs, click, keyring, Logbook, peewee, janus,
+  prompt-toolkit, matrix-nio, dbus-python, pydbus, notify2, pygobject3,
+  setuptools, installShellFiles,
+
+  pytest, faker, pytest-aiohttp, aioresponses,
+
+  enableDbusUi ? true
+}:
+
+buildPythonApplication rec {
+  pname = "pantalaimon";
+  version = "0.10.2";
+
+  disabled = pythonOlder "3.6";
+
+  # pypi tarball miss tests
+  src = fetchFromGitHub {
+    owner = "matrix-org";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-sjaJomKMKSZqLlKWTG7Oa87dXa5SnGQlVnrdS707A1w=";
+  };
+
+  propagatedBuildInputs = [
+    aiohttp
+    appdirs
+    attrs
+    click
+    janus
+    keyring
+    Logbook
+    matrix-nio
+    peewee
+    prompt-toolkit
+    setuptools
+  ] ++ lib.optional enableDbusUi [
+      dbus-python
+      notify2
+      pygobject3
+      pydbus
+  ];
+
+  checkInputs = [
+    pytest
+    faker
+    pytest-aiohttp
+    aioresponses
+  ];
+
+  nativeBuildInputs = [
+    installShellFiles
+  ];
+
+  # darwin has difficulty communicating with server, fails some integration tests
+  doCheck = !stdenv.isDarwin;
+
+  checkPhase = ''
+    pytest
+  '';
+
+  postInstall = ''
+    installManPage docs/man/*.[1-9]
+  '';
+
+  meta = with lib; {
+    description = "An end-to-end encryption aware Matrix reverse proxy daemon";
+    homepage = "https://github.com/matrix-org/pantalaimon";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ valodim ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/carbons/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/carbons/default.nix
new file mode 100644
index 000000000000..f702a667ae16
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/carbons/default.nix
@@ -0,0 +1,26 @@
+{ lib, stdenv, libxml2, pidgin, pkg-config, fetchFromGitHub } :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-carbons";
+  version = "0.2.3";
+
+  src = fetchFromGitHub {
+    owner = "gkdr";
+    repo  = "carbons";
+    rev   = "v${version}";
+    sha256 = "sha256-qiyIvmJbRmCrAi/93UxDVtO76nSdtzUVfT/sZGxxAh8=";
+  };
+
+  makeFlags = [ "PURPLE_PLUGIN_DIR=$(out)/lib/pidgin" ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ libxml2 pidgin ];
+
+  meta = with lib; {
+    homepage = "https://github.com/gkdr/carbons";
+    description = "XEP-0280: Message Carbons plugin for libpurple";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/msn-pecan/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/msn-pecan/default.nix
new file mode 100644
index 000000000000..7a761c1e91c8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/msn-pecan/default.nix
@@ -0,0 +1,25 @@
+{ lib, stdenv, fetchFromGitHub, pidgin} :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-msn-pecan";
+  version = "0.1.4";
+  src = fetchFromGitHub {
+    owner = "felipec";
+    repo = "msn-pecan";
+    rev = "v${version}";
+    sha256 = "0133rpiy4ik6rx9qn8m38vp7w505hnycggr53g3a2hfpk5xj03zh";
+  };
+
+  meta = {
+    description = "Alternative MSN protocol plug-in for Pidgin IM";
+    homepage = "https://github.com/felipec/msn-pecan";
+    platforms = lib.platforms.linux;
+  };
+
+  makeFlags = [
+    "PURPLE_LIBDIR=${placeholder "out"}/lib"
+    "PURPLE_DATADIR=${placeholder "out"}/share/data"
+  ];
+
+  buildInputs = [pidgin];
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/otr/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/otr/default.nix
new file mode 100644
index 000000000000..52204d5c79c0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/otr/default.nix
@@ -0,0 +1,22 @@
+{ lib, stdenv, fetchurl, libotr, pidgin, intltool } :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-otr";
+  version = "4.0.2";
+  src = fetchurl {
+    url = "https://otr.cypherpunks.ca/pidgin-otr-${version}.tar.gz";
+    sha256 = "1i5s9rrgbyss9rszq6c6y53hwqyw1k86s40cpsfx5ccl9bprxdgl";
+  };
+
+  postInstall = "ln -s \$out/lib/pidgin \$out/share/pidgin-otr";
+
+  buildInputs = [ libotr pidgin intltool ];
+
+  meta = with lib; {
+    homepage = "https://otr.cypherpunks.ca/";
+    description = "Plugin for Pidgin 2.x which implements OTR Messaging";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-indicator/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-indicator/default.nix
new file mode 100644
index 000000000000..9afdee8cda16
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-indicator/default.nix
@@ -0,0 +1,33 @@
+{ autoreconfHook
+, fetchFromGitHub
+, glib
+, intltool
+, lib
+, libappindicator-gtk2
+, libtool
+, pidgin
+, stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-indicator";
+  version = "1.0.1";
+
+  src = fetchFromGitHub {
+    owner = "philipl";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-CdA/aUu+CmCRbVBKpJGydicqFQa/rEsLWS3MBKlH2/M=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+  buildInputs = [ glib intltool libappindicator-gtk2 libtool pidgin ];
+
+  meta = with lib; {
+    description = "An AppIndicator and KStatusNotifierItem Plugin for Pidgin";
+    homepage = "https://github.com/philipl/pidgin-indicator";
+    maintainers = with maintainers; [ imalison ];
+    license = licenses.gpl2;
+    platforms = with platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/default.nix
new file mode 100644
index 000000000000..1250e3877b96
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/default.nix
@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, pkg-config, pidgin, texLive, imagemagick, glib, gtk2 }:
+
+let version = "1.5.0";
+in
+stdenv.mkDerivation {
+  pname = "pidgin-latex";
+  inherit version;
+
+  src = fetchurl {
+    url = "mirror://sourceforge/pidgin-latex/pidgin-latex_${version}.tar.bz2";
+    sha256 = "9c850aee90d7e59de834f83e09fa6e3e51b123f06e265ead70957608ada95441";
+  };
+
+  nativeBuildInputs = [pkg-config];
+  buildInputs = [gtk2 glib pidgin];
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  postPatch = ''
+    sed -e 's/-Wl,-soname//' -i Makefile
+  '';
+
+  passthru = {
+    wrapArgs = "--prefix PATH ':' ${lib.makeBinPath [ texLive imagemagick ]}";
+  };
+
+  meta = with lib; {
+    homepage = "https://sourceforge.net/projects/pidgin-latex/";
+    description = "LaTeX rendering plugin for Pidgin IM";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-mra/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-mra/default.nix
new file mode 100644
index 000000000000..a168eb984c33
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-mra/default.nix
@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchgit, pkg-config, pidgin } :
+
+let
+  version = "54b2992";
+in
+stdenv.mkDerivation {
+  pname = "pidgin-mra";
+  inherit version;
+
+  src = fetchgit {
+    url = "https://github.com/dreadatour/pidgin-mra";
+    rev = version;
+    sha256 = "1adq57g11kw7bfpivyvfk3nlpjkc8raiw4bzn3gn4nx3m0wl99vw";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin ];
+
+  postPatch = ''
+    sed -i 's|-I/usr/include/libpurple|$(shell pkg-config --cflags purple)|' Makefile
+  '';
+
+  makeFlags = [
+    "DESTDIR=/"
+    "LIBDIR=${placeholder "out"}/lib"
+    "DATADIR=${placeholder "out"}/share"
+  ];
+
+  meta = {
+    homepage = "https://github.com/dreadatour/pidgin-mra";
+    description = "Mail.ru Agent plugin for Pidgin / libpurple";
+    license = lib.licenses.gpl2;
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-opensteamworks/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-opensteamworks/default.nix
new file mode 100644
index 000000000000..9af8b0aff77b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-opensteamworks/default.nix
@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, pidgin, glib, json-glib, nss, nspr
+, libsecret
+} :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-opensteamworks";
+  version = "1.7";
+
+  src = fetchFromGitHub {
+    owner = "EionRobb";
+    repo = "pidgin-opensteamworks";
+    rev = version;
+    sha256 = "0zxd45g9ycw5kmm4i0800jnqg1ms2gbqcld6gkyv6n3ac1wxizpj";
+  };
+
+  sourceRoot = "source/steam-mobile";
+
+  installFlags = [
+    "PLUGIN_DIR_PURPLE=${placeholder "out"}/lib/purple-2"
+    "DATA_ROOT_DIR_PURPLE=${placeholder "out"}/share"
+  ];
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+  buildInputs = [
+    pidgin glib json-glib nss nspr libsecret
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/EionRobb/pidgin-opensteamworks";
+    description = "Plugin for Pidgin 2.x which implements Steam Friends/Steam IM compatibility";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ arobyn ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-osd/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-osd/default.nix
new file mode 100644
index 000000000000..d50a3ed5c30f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-osd/default.nix
@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, pidgin, xosd
+, autoreconfHook } :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-osd";
+  version = "0.2.0";
+  src = fetchFromGitHub {
+    owner = "edanaher";
+    repo = "pidgin-osd";
+    rev = "${pname}-${version}";
+    sha256 = "07wa9anz99hnv6kffpcph3fbq8mjbyq17ij977ggwgw37zb9fzb5";
+  };
+
+  # autoreconf is run such that it *really* wants all the files, and there's no
+  # default ChangeLog.  So make it happy.
+  preAutoreconf = "touch ChangeLog";
+
+  postInstall = ''
+    mkdir -p $out/lib/pidgin
+    mv $out/lib/pidgin-osd.{la,so} $out/lib/pidgin
+  '';
+
+  nativeBuildInputs = [ autoreconfHook ];
+  buildInputs = [ xosd pidgin ];
+
+  meta = with lib; {
+    homepage = "https://github.com/mbroemme/pidgin-osd";
+    description = "Plugin for Pidgin which implements on-screen display via libxosd";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-skypeweb/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-skypeweb/default.nix
new file mode 100644
index 000000000000..d7c3c6cacabd
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-skypeweb/default.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, pidgin, json-glib }:
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-skypeweb";
+  version = "1.7";
+
+  src = fetchFromGitHub {
+    owner = "EionRobb";
+    repo = "skype4pidgin";
+    rev = version;
+    sha256 = "11snyrjhm58gjvdmr5h5ajii3ah4a7c8zw3cavjv9xnnwrpfm5rb";
+  };
+
+  setSourceRoot = ''
+    sourceRoot=$(echo */skypeweb)
+  '';
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin json-glib ];
+
+  PKG_CONFIG_PURPLE_PLUGINDIR = "${placeholder "out"}/lib/purple-2";
+  PKG_CONFIG_PURPLE_DATADIR = "${placeholder "out"}/share";
+
+  meta = with lib; {
+    homepage = "https://github.com/EionRobb/skype4pidgin";
+    description = "SkypeWeb plugin for Pidgin";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-xmpp-receipts/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-xmpp-receipts/default.nix
new file mode 100644
index 000000000000..f545b65cd8ea
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-xmpp-receipts/default.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, pidgin } :
+
+let
+  version = "0.8";
+in
+stdenv.mkDerivation {
+  pname = "pidgin-xmpp-receipts";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "noonien-d";
+    repo = "pidgin-xmpp-receipts";
+    rev = "release_${version}";
+    sha256 = "13kwaymzkymjsdv8q95byd173i4vanj211vgx9cm0y8ag2r3cjsb";
+  };
+
+  buildInputs = [ pidgin ];
+
+  installPhase = ''
+    mkdir -p $out/lib/pidgin/
+    cp xmpp-receipts.so $out/lib/pidgin/
+  '';
+
+  meta = with lib; {
+    homepage = "http://devel.kondorgulasch.de/pidgin-xmpp-receipts/";
+    description = "Message delivery receipts (XEP-0184) Pidgin plugin";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ orivej ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-discord/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-discord/default.nix
new file mode 100644
index 000000000000..10cbcb6c1d29
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-discord/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, pidgin, json-glib }:
+
+stdenv.mkDerivation {
+  pname = "purple-discord";
+  version = "unstable-2018-04-10";
+
+  src = fetchFromGitHub {
+    owner = "EionRobb";
+    repo = "purple-discord";
+    rev = "9a97886d15a1f028de54b5e6fc54e784531063b0";
+    sha256 = "0dc344zh1v4yh9c8javcw5ylzwc1wpx0ih8bww8p8cjmhr8kcl32";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin json-glib ];
+
+  PKG_CONFIG_PURPLE_PLUGINDIR = "${placeholder "out"}/lib/purple-2";
+  PKG_CONFIG_PURPLE_DATADIR = "${placeholder "out"}/share";
+
+  meta = with lib; {
+    homepage = "https://github.com/EionRobb/purple-discord";
+    description = "Discord plugin for Pidgin";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ sna ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-facebook/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-facebook/default.nix
new file mode 100644
index 000000000000..b1078c864de6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-facebook/default.nix
@@ -0,0 +1,66 @@
+{ lib, stdenv, fetchFromGitHub, fetchhg, pidgin, glib, json-glib, autoreconfHook }:
+
+
+let
+  pidginHg = fetchhg {
+    url = "https://bitbucket.org/pidgin/main";
+    # take from VERSION file
+    rev = "9ff9acf9fa14";
+    sha256 = "06imlhsps4wrjgjb92zpaxprxfxl2pjb2x9pl859c8cryssrz2jv";
+  };
+
+in stdenv.mkDerivation rec {
+  pname = "purple-facebook";
+  version = "0.9.5";
+
+  src = fetchFromGitHub {
+    owner = "dequis";
+    repo = "purple-facebook";
+    rev = "v${version}-9ff9acf9fa14";
+    sha256 = "0a1860bkzrmyxahm9rlxi80z335w491wzdaqaw6j9ccavbymhwhs";
+  };
+
+  postPatch = ''
+    # we do all patching from update.sh in preAutoreconf
+    echo "#!${stdenv.shell}" > update.sh
+  '';
+
+  preAutoreconf = ''
+    for FILE in $(cat MANIFEST_PIDGIN); do
+        install -Dm644 "${pidginHg}/$FILE" "pidgin/$FILE" || true
+    done
+
+    touch $(cat MANIFEST_VOIDS)
+
+    patchdir="$(pwd)/patches"
+    pushd pidgin
+
+    for patch in $(ls -1 "$patchdir"); do
+      patch -p1 -i "$patchdir/$patch"
+    done
+    popd
+
+    ./autogen.sh
+  '';
+
+  makeFlags = [
+    "PLUGIN_DIR_PURPLE=/lib/pidgin/"
+    "DATA_ROOT_DIR_PURPLE=/share"
+  ];
+
+  installPhase = ''
+    mkdir -p $out/lib/purple-2
+    cp pidgin/libpurple/protocols/facebook/.libs/*.so $out/lib/purple-2/
+  '';
+
+  nativeBuildInputs = [ autoreconfHook ];
+  buildInputs = [ pidgin glib json-glib ];
+
+  meta = with lib; {
+    inherit (src.meta) homepage;
+    description = "Facebook protocol plugin for libpurple";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ davorb ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-hangouts/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-hangouts/default.nix
new file mode 100644
index 000000000000..653708abe3b6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-hangouts/default.nix
@@ -0,0 +1,25 @@
+{ lib, stdenv, fetchhg, pidgin, glib, json-glib, protobuf, protobufc }:
+
+stdenv.mkDerivation {
+  pname = "purple-hangouts-hg";
+  version = "2018-12-02";
+
+  src = fetchhg {
+    url = "https://bitbucket.org/EionRobb/purple-hangouts/";
+    rev = "cccf2f6";
+    sha256 = "1zd1rlzqvw1zkb0ydyz039n3xa1kv1f20a4l6rkm9a8sp6rpf3pi";
+  };
+
+  buildInputs = [ pidgin glib json-glib protobuf protobufc ];
+
+  PKG_CONFIG_PURPLE_PLUGINDIR = "${placeholder "out"}/lib/purple-2";
+  PKG_CONFIG_PURPLE_DATADIR = "${placeholder "out"}/share";
+
+  meta = with lib; {
+    homepage = "https://bitbucket.org/EionRobb/purple-hangouts";
+    description = "Native Hangouts support for pidgin";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ralith ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-lurch/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-lurch/default.nix
new file mode 100644
index 000000000000..2170aac16e05
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-lurch/default.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, cmake, pidgin, minixml, libxml2, sqlite, libgcrypt }:
+
+stdenv.mkDerivation rec {
+  pname = "purple-lurch";
+  version = "0.6.7";
+
+  src = fetchFromGitHub {
+    owner = "gkdr";
+    repo = "lurch";
+    rev = "v${version}";
+    sha256 = "029jjqinsfhpv0zgji3sv1cyk54fn9qp176fwy97d1clf0vflxrz";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ pidgin minixml libxml2 sqlite libgcrypt ];
+
+  dontUseCmakeConfigure = true;
+
+  installPhase = ''
+    install -Dm755 -t $out/lib/purple-2 build/lurch.so
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/gkdr/lurch";
+    description = "XEP-0384: OMEMO Encryption for libpurple";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ emmanuelrosa ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix
new file mode 100644
index 000000000000..9845491f235d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-matrix/default.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, pidgin, json-glib, glib, http-parser, sqlite, olm, libgcrypt } :
+
+stdenv.mkDerivation rec {
+  pname = "purple-matrix-unstable";
+  version = "2019-06-06";
+
+  src = fetchFromGitHub {
+    owner = "matrix-org";
+    repo = "purple-matrix";
+    rev = "4494ba22b479917f0b1f96a3019792d3d75bcff1";
+    sha256 = "1gjm0z4wa5vi9x1xk43rany5pffrwg958n180ahdj9a7sa8a4hpm";
+  };
+
+  NIX_CFLAGS_COMPILE = builtins.toString [
+    # glib-2.62 deprecations
+    "-DGLIB_DISABLE_DEPRECATION_WARNINGS"
+    # override "-O0 -Werror" set by build system
+    "-O3" "-Wno-error"
+  ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin json-glib glib http-parser sqlite olm libgcrypt ];
+
+  makeFlags = [
+    "PLUGIN_DIR_PURPLE=${placeholder "out"}/lib/purple-2"
+    "DATA_ROOT_DIR_PURPLE=${placeholder "out"}/share"
+  ];
+
+  buildFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ]; # fix build on darwin
+
+  meta = with lib; {
+    homepage = "https://github.com/matrix-org/purple-matrix";
+    description = "Matrix support for Pidgin / libpurple";
+    license = licenses.gpl2;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ symphorien ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-mm-sms/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-mm-sms/default.nix
new file mode 100644
index 000000000000..3bdecf504ceb
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-mm-sms/default.nix
@@ -0,0 +1,30 @@
+{ lib, stdenv, glibmm, pidgin, pkg-config, modemmanager, fetchFromGitLab } :
+
+stdenv.mkDerivation rec {
+  pname = "purple-mm-sms";
+  version = "0.1.7";
+
+  src = fetchFromGitLab {
+    domain = "source.puri.sm";
+    owner = "Librem5";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0917gjig35hmi6isqb62vhxd3lkc2nwdn13ym2gvzgcjfgjzjajr";
+  };
+
+  makeFlags = [
+    "DATA_ROOT_DIR_PURPLE=$(out)/share"
+    "PLUGIN_DIR_PURPLE=$(out)/lib/purple-2"
+  ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ glibmm pidgin modemmanager ];
+
+  meta = with lib; {
+    homepage = "https://source.puri.sm/Librem5/purple-mm-sms";
+    description = "A libpurple plugin for sending and receiving SMS via Modemmanager";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ tomfitzhenry ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-plugin-pack/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-plugin-pack/default.nix
new file mode 100644
index 000000000000..ef9ce5bca74c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-plugin-pack/default.nix
@@ -0,0 +1,20 @@
+{ lib, stdenv, fetchurl, pidgin, intltool, python } :
+
+stdenv.mkDerivation rec {
+  pname = "purple-plugin-pack";
+  version = "2.7.0";
+  src = fetchurl {
+    url = "https://bitbucket.org/rekkanoryo/purple-plugin-pack/downloads/purple-plugin-pack-${version}.tar.bz2";
+    sha256 = "0g5hmy7fwgjq59j52h9yps28jsjjrfkd4r18gyx6hfd3g3kzbg1b";
+  };
+
+  buildInputs = [ pidgin intltool python ];
+
+  meta = with lib; {
+    homepage = "https://bitbucket.org/rekkanoryo/purple-plugin-pack";
+    description = "Plugin pack for Pidgin 2.x";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ bdimcheff ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-slack/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-slack/default.nix
new file mode 100644
index 000000000000..9f5f9a2bda1e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-slack/default.nix
@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchFromGitHub, pidgin, pkg-config }:
+
+stdenv.mkDerivation {
+  pname = "purple-slack-unstable";
+  version = "2020-09-22";
+
+  src = fetchFromGitHub {
+    owner = "dylex";
+    repo = "slack-libpurple";
+    rev = "2e9fa028224b02e29473b1b998fc1e5f487e79ec";
+    sha256 = "1sksqshiwldd32k8jmiflp2pcax31ym6rypr4qa4v5vdn907g80m";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin ];
+
+  PKG_CONFIG_PURPLE_PLUGINDIR = "${placeholder "out"}/lib/purple-2";
+  PKG_CONFIG_PURPLE_DATAROOTDIR = "${placeholder "out"}/share";
+
+  meta = with lib; {
+    homepage = "https://github.com/dylex/slack-libpurple";
+    description = "Slack plugin for Pidgin";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ eyjhb ];
+  };
+}
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-vk-plugin/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-vk-plugin/default.nix
new file mode 100644
index 000000000000..07b38ff3c5a2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-vk-plugin/default.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchhg, pidgin, cmake, libxml2 } :
+
+let
+  version = "40ddb6d";
+in
+stdenv.mkDerivation {
+  pname = "purple-vk-plugin";
+  inherit version;
+
+  src = fetchhg {
+    url = "https://bitbucket.org/olegoandreev/purple-vk-plugin";
+    rev = version;
+    sha256 = "02p57fgx8ml00cbrb4f280ak2802svz80836dzk9f1zwm1bcr2qc";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ pidgin libxml2 ];
+
+  preConfigure = ''
+    sed -i -e 's|DESTINATION.*PURPLE_PLUGIN_DIR}|DESTINATION lib/purple-2|' CMakeLists.txt
+  '';
+
+  cmakeFlags = [ "-DCMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT=1" ];
+
+  meta = {
+    homepage = "https://bitbucket.org/olegoandreev/purple-vk-plugin";
+    description = "Vk (russian social network) plugin for Pidgin / libpurple";
+    license = lib.licenses.gpl3;
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-xmpp-http-upload/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-xmpp-http-upload/default.nix
new file mode 100644
index 000000000000..cb450aa1bc33
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/purple-xmpp-http-upload/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, pidgin, glib, libxml2 }:
+
+stdenv.mkDerivation {
+  pname = "purple-xmpp-upload";
+  version = "unstable-2017-12-31";
+
+  src = fetchFromGitHub {
+    owner = "Junker";
+    repo = "purple-xmpp-http-upload";
+    rev = "178096cbfc9df165c2dc1677666439969d212b37";
+    sha256 = "12l9rqlgb4i50xxrfnvwz9sqfk0d3c0m6l09mnvfixqi8illyvlp";
+  };
+
+  buildInputs = [ pidgin glib libxml2 ];
+
+  installPhase = ''
+    install -Dm644 -t $out/lib/purple-2 jabber_http_file_upload.so
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/Junker/purple-xmpp-http-upload";
+    description = "HTTP File Upload plugin for libpurple (XMPP Protocol XEP-0363)";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ emmanuelrosa ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/sipe/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/sipe/default.nix
new file mode 100644
index 000000000000..fa314e82dac8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/sipe/default.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchurl, fetchpatch, pidgin, intltool, libxml2, gmime, nss }:
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-sipe";
+  version = "1.25.0";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/sipe/${pname}-${version}.tar.gz";
+    sha256 = "0262sz00iqxylx0xfyr48xikhiqzr8pg7b4b7vwj5iv4qxpxv939";
+  };
+
+  patches = [
+    # add sipe_utils_memdup() function
+    (fetchpatch {
+      url = "https://repo.or.cz/siplcs.git/patch/567d0ddc0692adfef5f15d0d383825a9b2ea4b49";
+      sha256 = "24L8ZfoOGc3JoTCGxuTNjuHzt5QgFDu1+vSoJpGvde4=";
+    })
+    # replace g_memdup() with sipe_utils_memdup()
+    # g_memdup is deprecatein newer Glib
+    (fetchpatch {
+      url = "https://repo.or.cz/siplcs.git/patch/583a734e63833f03d11798b7b0d59a17d08ae60f";
+      sha256 = "Ai6Czpy/FYvBi4GZR7yzch6OcouJgfreI9HcojhGVV4=";
+    })
+  ];
+
+  nativeBuildInputs = [ intltool ];
+  buildInputs = [ pidgin gmime libxml2 nss ];
+  enableParallelBuilding = true;
+
+  postInstall = "ln -s \$out/lib/purple-2 \$out/share/pidgin-sipe";
+
+  meta = with lib; {
+    description = "SIPE plugin for Pidgin IM";
+    homepage = "http://sipe.sourceforge.net/";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/telegram-purple/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/telegram-purple/default.nix
new file mode 100644
index 000000000000..527af9ed98db
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/telegram-purple/default.nix
@@ -0,0 +1,43 @@
+{ lib, stdenv, fetchgit, pkg-config, pidgin, libwebp, libgcrypt, gettext } :
+
+let
+  version = "1.3.1";
+in
+stdenv.mkDerivation rec {
+  pname = "telegram-purple";
+  inherit version;
+
+  src = fetchgit {
+    url = "https://github.com/majn/telegram-purple";
+    rev = "v${version}";
+    sha256 = "0p93jpjpx7hszwffzgixw04zkrpsiyzz4za3gfr4j07krc4771fp";
+  };
+
+  NIX_CFLAGS_COMPILE = "-Wno-error=cast-function-type";
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pidgin libwebp libgcrypt gettext ];
+
+  preConfigure = ''
+    sed -i "s|/etc/telegram-purple/server.tglpub|$out/lib/purple-2/server.tglpub|g" telegram-purple.c
+    echo "#define GIT_COMMIT \"${builtins.substring 0 10 src.rev}\"" > commit.h
+  '';
+
+  installPhase = ''
+    mkdir -p $out/lib/purple-2/
+    cp bin/*.so $out/lib/purple-2/ #*/
+    cp tg-server.tglpub $out/lib/purple-2/server.tglpub
+    mkdir -p $out/pixmaps/pidgin/protocols/{16,22,48}
+    cp imgs/telegram16.png $out/pixmaps/pidgin/protocols/16
+    cp imgs/telegram22.png $out/pixmaps/pidgin/protocols/22
+    cp imgs/telegram48.png $out/pixmaps/pidgin/protocols/48
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/majn/telegram-purple";
+    description = "Telegram for Pidgin / libpurple";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.jagajaga ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/tox-prpl/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/tox-prpl/default.nix
new file mode 100644
index 000000000000..41c6a75310a6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/tox-prpl/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, libtoxcore, pidgin, autoreconfHook, libsodium }:
+
+stdenv.mkDerivation rec {
+  pname = "tox-prpl";
+  version = "0.5.1";
+
+  src = fetchFromGitHub {
+    owner  = "jin-eld";
+    repo   = "tox-prpl";
+    rev    = "v${version}";
+    sha256 = "0ms367l2f7x83k407c93bmhpyc820f1css61fh2gx4jq13cxqq3p";
+  };
+
+  NIX_LDFLAGS = "-lssp -lsodium";
+
+  postInstall = "mv $out/lib/purple-2 $out/lib/pidgin";
+
+  buildInputs = [ libtoxcore pidgin libsodium ];
+  nativeBuildInputs = [ autoreconfHook ];
+
+  meta = with lib; {
+    homepage = "https://github.com/jin-eld/tox-prpl";
+    description = "Tox plugin for Pidgin / libpurple";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/window-merge/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/window-merge/default.nix
new file mode 100644
index 000000000000..c5437e965ed8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/window-merge/default.nix
@@ -0,0 +1,21 @@
+{ lib, stdenv, fetchurl, pidgin } :
+
+stdenv.mkDerivation rec {
+  pname = "pidgin-window-merge";
+  version = "0.3";
+
+  src = fetchurl {
+    url = "https://github.com/downloads/dm0-/window_merge/window_merge-${version}.tar.gz";
+    sha256 = "0cb5rvi7jqvm345g9mlm4wpq0240kcybv81jpw5wlx7hz0lwi478";
+  };
+
+  buildInputs = [ pidgin ];
+
+  meta = with lib; {
+    homepage = "https://github.com/dm0-/window_merge";
+    description = "Pidgin plugin that merges the Buddy List window with a conversation window";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/add-search-path.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/add-search-path.patch
new file mode 100644
index 000000000000..b0758777186a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/add-search-path.patch
@@ -0,0 +1,20 @@
+diff --git a/libpurple/plugin.c b/libpurple/plugin.c
+index 4f2b402..fda9add 100644
+--- a/libpurple/plugin.c
++++ b/libpurple/plugin.c
+@@ -1181,8 +1181,15 @@ purple_plugins_get_handle(void) {
+ void
+ purple_plugins_init(void) {
+ 	void *handle = purple_plugins_get_handle();
++	gchar **paths, **p;
+ 
+ 	purple_plugins_add_search_path(LIBDIR);
++	paths = g_strsplit(g_getenv("PURPLE_PLUGIN_PATH"), ":", -1);
++	if (paths) {
++		for (p = paths; *p; ++p)
++			if (**p) purple_plugins_add_search_path(*p);
++	}
++	g_strfreev(paths);
+ 
+ 	purple_signal_register(handle, "plugin-load",
+ 						 purple_marshal_VOID__POINTER,
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/default.nix
new file mode 100644
index 000000000000..0f1acc1c7cce
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/default.nix
@@ -0,0 +1,107 @@
+{ stdenv, fetchurl, makeWrapper, pkg-config, gtk2, gtk2-x11
+, gtkspell2, aspell
+, gst_all_1, startupnotification, gettext
+, perlPackages, libxml2, nss, nspr, farstream
+, libXScrnSaver, avahi, dbus, dbus-glib, intltool, libidn
+, lib, python3, libICE, libXext, libSM
+, libgnt, ncurses
+, cyrus_sasl ? null
+, openssl ? null
+, gnutls ? null
+, libgcrypt ? null
+, plugins, symlinkJoin
+}:
+
+# FIXME: clean the mess around choosing the SSL library (nss by default)
+
+let unwrapped = stdenv.mkDerivation rec {
+  pname = "pidgin";
+  majorVersion = "2";
+  version = "${majorVersion}.14.6";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/pidgin/${pname}-${version}.tar.bz2";
+    sha256 = "bb45f7c032f9efd6922a5dbf2840995775e5584771b23992d04f6eff7dff5336";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  NIX_CFLAGS_COMPILE = "-I${gst_all_1.gst-plugins-base.dev}/include/gstreamer-1.0";
+
+  buildInputs = let
+    python-with-dbus = python3.withPackages (pp: with pp; [ dbus-python ]);
+  in [
+    aspell startupnotification
+    gst_all_1.gstreamer gst_all_1.gst-plugins-base gst_all_1.gst-plugins-good
+    libxml2 nss nspr
+    libXScrnSaver python-with-dbus
+    avahi dbus dbus-glib intltool libidn
+    libICE libXext libSM cyrus_sasl
+    libgnt ncurses # optional: build finch - the console UI
+  ]
+  ++ (lib.optional (openssl != null) openssl)
+  ++ (lib.optional (gnutls != null) gnutls)
+  ++ (lib.optional (libgcrypt != null) libgcrypt)
+  ++ (lib.optionals (stdenv.isLinux) [gtk2 gtkspell2 farstream])
+  ++ (lib.optional (stdenv.isDarwin) gtk2-x11);
+
+
+  propagatedBuildInputs = [ pkg-config gettext ]
+    ++ (with perlPackages; [ perl XMLParser ])
+    ++ (lib.optional (stdenv.isLinux) gtk2)
+    ++ (lib.optional (stdenv.isDarwin) gtk2-x11);
+
+  patches = [ ./pidgin-makefile.patch ./add-search-path.patch ];
+
+  configureFlags = [
+    "--with-nspr-includes=${nspr.dev}/include/nspr"
+    "--with-nspr-libs=${nspr.out}/lib"
+    "--with-nss-includes=${nss.dev}/include/nss"
+    "--with-nss-libs=${nss.out}/lib"
+    "--with-ncurses-headers=${ncurses.dev}/include"
+    "--disable-meanwhile"
+    "--disable-nm"
+    "--disable-tcl"
+    "--disable-gevolution"
+  ]
+  ++ (lib.optionals (cyrus_sasl != null) [ "--enable-cyrus-sasl=yes" ])
+  ++ (lib.optionals (gnutls != null) ["--enable-gnutls=yes" "--enable-nss=no"])
+  ++ (lib.optionals (stdenv.isDarwin) ["--disable-gtkspell" "--disable-vv"]);
+
+  enableParallelBuilding = true;
+
+  postInstall = ''
+    wrapProgram $out/bin/pidgin \
+      --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0"
+  '';
+
+  doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+  # In particular, this detects missing python imports in some of the tools.
+  postFixup = let
+    # TODO: python is a script, so it doesn't work as interpreter on darwin
+    binsToTest = lib.optionalString stdenv.isLinux "purple-remote," + "pidgin,finch";
+  in lib.optionalString doInstallCheck ''
+    for f in "''${!outputBin}"/bin/{${binsToTest}}; do
+      echo "Testing: $f --help"
+      "$f" --help
+    done
+  '';
+
+  passthru = {
+    makePluginPath = lib.makeSearchPathOutput "lib" "lib/purple-${majorVersion}";
+  };
+
+  meta = with lib; {
+    description = "Multi-protocol instant messaging client";
+    homepage = "http://pidgin.im";
+    license = licenses.gpl2Plus;
+    platforms = platforms.unix;
+    maintainers = [ maintainers.vcunat ];
+  };
+};
+
+in if plugins == [] then unwrapped
+    else import ./wrapper.nix {
+      inherit makeWrapper symlinkJoin plugins;
+      pidgin = unwrapped;
+    }
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/pidgin-makefile.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/pidgin-makefile.patch
new file mode 100644
index 000000000000..049d404a8d5f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/pidgin-makefile.patch
@@ -0,0 +1,64 @@
+diff --git a/pidgin/Makefile.am b/pidgin/Makefile.am
+index 84d927b..1467c19 100644
+--- a/pidgin/Makefile.am
++++ b/pidgin/Makefile.am
+@@ -151,6 +151,7 @@ pidgin_LDADD = \
+ 	$(GLIB_LIBS) \
+ 	$(DBUS_LIBS) \
+ 	$(GSTREAMER_LIBS) \
++	$(GSTINTERFACES_LIBS) \
+ 	$(GSTVIDEO_LIBS) \
+ 	$(XSS_LIBS) \
+ 	$(SM_LIBS) \
+@@ -171,6 +172,7 @@ AM_CPPFLAGS = \
+ 	-I$(top_srcdir) \
+ 	$(GLIB_CFLAGS) \
+ 	$(GSTREAMER_CFLAGS) \
++	$(GSTINTERFACES_CFLAGS) \
+ 	$(DEBUG_CFLAGS) \
+ 	$(GTK_CFLAGS) \
+ 	$(DBUS_CFLAGS) \
+diff --git a/pidgin/Makefile.in b/pidgin/Makefile.in
+index 0d51e25..dd5d879 100644
+--- a/pidgin/Makefile.in
++++ b/pidgin/Makefile.in
+@@ -703,6 +703,7 @@ EXTRA_DIST = \
+ @ENABLE_GTK_TRUE@	$(GLIB_LIBS) \
+ @ENABLE_GTK_TRUE@	$(DBUS_LIBS) \
+ @ENABLE_GTK_TRUE@	$(GSTREAMER_LIBS) \
++@ENABLE_GTK_TRUE@	$(GSTINTERFACES_LIBS) \
+ @ENABLE_GTK_TRUE@	$(GSTVIDEO_LIBS) \
+ @ENABLE_GTK_TRUE@	$(XSS_LIBS) \
+ @ENABLE_GTK_TRUE@	$(SM_LIBS) \
+@@ -723,6 +724,7 @@ EXTRA_DIST = \
+ @ENABLE_GTK_TRUE@	-I$(top_srcdir) \
+ @ENABLE_GTK_TRUE@	$(GLIB_CFLAGS) \
+ @ENABLE_GTK_TRUE@	$(GSTREAMER_CFLAGS) \
++@ENABLE_GTK_TRUE@	$(GSTINTERFACES_CFLAGS) \
+ @ENABLE_GTK_TRUE@	$(DEBUG_CFLAGS) \
+ @ENABLE_GTK_TRUE@	$(GTK_CFLAGS) \
+ @ENABLE_GTK_TRUE@	$(DBUS_CFLAGS) \
+diff --git a/pidgin/plugins/Makefile.am b/pidgin/plugins/Makefile.am
+index 3bb8c22..6d1e869 100644
+--- a/pidgin/plugins/Makefile.am
++++ b/pidgin/plugins/Makefile.am
+@@ -145,6 +145,7 @@ AM_CPPFLAGS = \
+ 	$(GTK_CFLAGS) \
+ 	$(UNITY_CFLAGS) \
+ 	$(GSTREAMER_CFLAGS) \
++	$(GSTINTERFACES_CFLAGS) \
+ 	$(PLUGIN_CFLAGS)
+ 
+ #
+diff --git a/pidgin/plugins/Makefile.in b/pidgin/plugins/Makefile.in
+index 82a34aa..1f7db00 100644
+--- a/pidgin/plugins/Makefile.in
++++ b/pidgin/plugins/Makefile.in
+@@ -781,6 +781,7 @@ AM_CPPFLAGS = \
+ 	$(GTK_CFLAGS) \
+ 	$(UNITY_CFLAGS) \
+ 	$(GSTREAMER_CFLAGS) \
++	$(GSTINTERFACES_CFLAGS) \
+ 	$(PLUGIN_CFLAGS)
+ 
+ 
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/wrapper.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/wrapper.nix
new file mode 100644
index 000000000000..095f838fe981
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pidgin/wrapper.nix
@@ -0,0 +1,20 @@
+{ symlinkJoin, pidgin, makeWrapper, plugins }:
+
+let
+extraArgs = map (x: x.wrapArgs or "") plugins;
+in symlinkJoin {
+  name = "pidgin-with-plugins-${pidgin.version}";
+
+  paths = [ pidgin ] ++ plugins;
+
+  buildInputs = [ makeWrapper ];
+
+  postBuild = ''
+    wrapProgram $out/bin/pidgin \
+      --suffix-each PURPLE_PLUGIN_PATH ':' "$out/lib/purple-${pidgin.majorVersion} $out/lib/pidgin" \
+      ${toString extraArgs}
+    wrapProgram $out/bin/finch \
+      --suffix-each PURPLE_PLUGIN_PATH ':' "$out/lib/purple-${pidgin.majorVersion}" \
+      ${toString extraArgs}
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/poezio/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/poezio/default.nix
new file mode 100644
index 000000000000..bd8c492ff28f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/poezio/default.nix
@@ -0,0 +1,59 @@
+{ lib
+, aiodns
+, buildPythonApplication
+, cffi
+, fetchFromGitHub
+, mpd2
+, pkg-config
+, potr
+, pyasn1
+, pyasn1-modules
+, pyinotify
+, pytestCheckHook
+, pythonOlder
+, setuptools
+, slixmpp
+, typing-extensions
+}:
+
+buildPythonApplication rec {
+  pname = "poezio";
+  version = "0.13.1";
+  disabled = pythonOlder "3.4";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "041y61pcbdb86s04qwp8s1g6bp84yskc7vdizwpi2hz18y01x5fy";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  propagatedBuildInputs = [
+    aiodns
+    cffi
+    mpd2
+    potr
+    pyasn1
+    pyasn1-modules
+    pyinotify
+    setuptools
+    slixmpp
+  ] ++ lib.optionals (pythonOlder "3.7") [
+    typing-extensions
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    description = "Free console XMPP client";
+    homepage = "https://poez.io";
+    license = licenses.zlib;
+    maintainers = [ maintainers.lsix ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pond/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pond/default.nix
new file mode 100644
index 000000000000..f26cd0109444
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pond/default.nix
@@ -0,0 +1,36 @@
+{ lib, stdenv, buildGoPackage, trousers, dclxvi, wrapGAppsHook, pkg-config, gtk3, gtkspell3,
+  fetchgit }:
+
+let
+  gui = true; # Might be implemented with nixpkgs config.
+in
+buildGoPackage rec {
+  pname = "pond";
+  version = "20150830-${lib.strings.substring 0 7 rev}";
+  rev = "bce6e0dc61803c23699c749e29a83f81da3c41b2";
+
+  goPackagePath = "github.com/agl/pond";
+
+  src = fetchgit {
+    inherit rev;
+    url = "https://github.com/agl/pond";
+    sha256 = "1dmgbg4ak3jkbgmxh0lr4hga1nl623mh7pvsgby1rxl4ivbzwkh4";
+  };
+
+  goDeps = ./deps.nix;
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ trousers gtk3 gtkspell3 ]
+    ++ lib.optional stdenv.hostPlatform.isx86_64 dclxvi
+    ++ lib.optionals gui [ wrapGAppsHook ];
+  tags = lib.optionals (!gui) [ "nogui" ];
+  excludedPackages = "\\(appengine\\|bn256cgo\\)";
+  postPatch = lib.optionalString stdenv.hostPlatform.isx86_64 ''
+    grep -r 'bn256' | awk -F: '{print $1}' | xargs sed -i \
+      -e "s,golang.org/x/crypto/bn256,github.com/agl/pond/bn256cgo,g" \
+      -e "s,bn256\.,bn256cgo.,g"
+  '';
+
+  # https://hydra.nixos.org/build/150102618/nixlog/2
+  meta.broken = stdenv.isAarch64;
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pond/deps.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pond/deps.nix
new file mode 100644
index 000000000000..55850f0a89c2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pond/deps.nix
@@ -0,0 +1,47 @@
+[
+  {
+    goPackagePath = "golang.org/x/crypto";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/crypto";
+      rev = "575fdbe86e5dd89229707ebec0575ce7d088a4a6";
+      sha256 = "1kgv1mkw9y404pk3lcwbs0vgl133mwyp294i18jg9hp10s5d56xa";
+    };
+  }
+  {
+    goPackagePath = "github.com/agl/ed25519";
+    fetch = {
+      type = "git";
+      url = "https://github.com/agl/ed25519";
+      rev = "278e1ec8e8a6e017cd07577924d6766039146ced";
+      sha256 = "165d89cc6dl28j4hkn86pny0jz3sa6hamzdvpvwdj4iha3x6lzc9";
+    };
+  }
+  {
+    goPackagePath = "github.com/golang/protobuf";
+    fetch = {
+      type = "git";
+      url = "https://github.com/golang/protobuf";
+      rev = "59b73b37c1e45995477aae817e4a653c89a858db";
+      sha256 = "1dx22jvhvj34ivpr7gw01fncg9yyx35mbpal4mpgnqka7ajmgjsa";
+    };
+  }
+  {
+    goPackagePath = "golang.org/x/net";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/net";
+      rev = "62ac18b461605b4be188bbc7300e9aa2bc836cd4";
+      sha256 = "0lwwvbbwbf3yshxkfhn6z20gd45dkvnmw2ms36diiy34krgy402p";
+    };
+  }
+  {
+    goPackagePath = "github.com/agl/go-gtk";
+    fetch = {
+      type = "git";
+      url = "https://github.com/agl/go-gtk";
+      rev = "91c1edb38c241d73129e6b098ca1c9fa83abfc15";
+      sha256 = "156ixlhakpqgyp35rsvmndrqz8aggv5bcmzg9ynpri3b9j6kim4d";
+    };
+  }
+]
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/default.nix
new file mode 100644
index 000000000000..9d8a0d68e756
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/default.nix
@@ -0,0 +1,83 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, glib, openssl
+, glibcLocales, expect, ncurses, libotr, curl, readline, libuuid
+, cmocka, libmicrohttpd, expat, sqlite, libmesode, autoconf-archive
+
+, autoAwaySupport ? true,       libXScrnSaver ? null, libX11 ? null
+, notifySupport ? true,         libnotify ? null, gdk-pixbuf ? null
+, traySupport ? true,           gtk2 ? null
+, pgpSupport ? true,            gpgme ? null
+, pythonPluginSupport ? true,   python ? null
+, omemoSupport ? true,          libsignal-protocol-c ? null, libgcrypt ? null
+}:
+
+assert autoAwaySupport     -> libXScrnSaver != null && libX11 != null;
+assert notifySupport       -> libnotify != null && gdk-pixbuf != null;
+assert traySupport         -> gtk2 != null;
+assert pgpSupport          -> gpgme != null;
+assert pythonPluginSupport -> python != null;
+assert omemoSupport        -> libsignal-protocol-c != null && libgcrypt != null;
+
+with lib;
+
+stdenv.mkDerivation rec {
+  pname = "profanity";
+  version = "0.11.0";
+
+  src = fetchFromGitHub {
+    owner = "profanity-im";
+    repo = "profanity";
+    rev = version;
+    sha256 = "0xmzsh0szm8x3hgw65j0cd2bp8cmrnq5pjz49lqajircyzflsngm";
+  };
+
+  patches = [
+    ./patches/packages-osx.patch
+  ];
+
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [
+    autoreconfHook autoconf-archive glibcLocales pkg-config
+  ];
+
+  buildInputs = [
+    expect readline libuuid glib openssl expat ncurses libotr
+    curl libmesode cmocka libmicrohttpd sqlite
+  ] ++ optionals autoAwaySupport     [ libXScrnSaver libX11 ]
+    ++ optionals notifySupport       [ libnotify gdk-pixbuf ]
+    ++ optionals traySupport         [ gtk2 ]
+    ++ optionals pgpSupport          [ gpgme ]
+    ++ optionals pythonPluginSupport [ python ]
+    ++ optionals omemoSupport        [ libsignal-protocol-c libgcrypt ];
+
+  # Enable feature flags, so that build fail if libs are missing
+  configureFlags = [ "--enable-c-plugins" "--enable-otr" ]
+    ++ optionals notifySupport       [ "--enable-notifications" ]
+    ++ optionals traySupport         [ "--enable-icons-and-clipboard" ]
+    ++ optionals pgpSupport          [ "--enable-pgp" ]
+    ++ optionals pythonPluginSupport [ "--enable-python-plugins" ]
+    ++ optionals omemoSupport        [ "--enable-omemo" ];
+
+  preAutoreconf = ''
+    mkdir m4
+  '';
+
+  doCheck = true;
+
+  LC_ALL = "en_US.utf8";
+
+  meta = {
+    description = "A console based XMPP client";
+    longDescription = ''
+      Profanity is a console based XMPP client written in C using ncurses and
+      libstrophe, inspired by Irssi.
+    '';
+    homepage = "http://www.profanity.im/";
+    license = licenses.gpl3Plus;
+    platforms = platforms.unix;
+    changelog = "https://github.com/profanity-im/profanity/releases/tag/${version}";
+    downloadPage = "https://github.com/profanity-im/profanity/releases/";
+    maintainers = [ maintainers.devhell ];
+    updateWalker = true;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/patches/packages-osx.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/patches/packages-osx.patch
new file mode 100644
index 000000000000..796ec6b0a615
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/profanity/patches/packages-osx.patch
@@ -0,0 +1,13 @@
+diff --git a/configure.ac b/configure.ac
+index 5c00aca..eb78060 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -23,7 +23,6 @@ PLATFORM="unknown"
+ AS_CASE([$host_os],
+     [freebsd*], [PLATFORM="freebsd"],
+     [openbsd*], [PLATFORM="openbsd"],
+-    [darwin*], [PLATFORM="osx"],
+     [cygwin], [PLATFORM="cygwin"],
+     [PLATFORM="nix"])
+ 
+
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/psi-plus/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/psi-plus/default.nix
new file mode 100644
index 000000000000..01a8a71f0326
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/psi-plus/default.nix
@@ -0,0 +1,104 @@
+{ lib
+, mkDerivation
+, fetchFromGitHub
+, cmake
+, qtbase
+, qtmultimedia
+, qtx11extras
+, qttools
+, libidn
+, qca-qt5
+, libXScrnSaver
+, hunspell
+, libsecret
+, libgcrypt
+, libotr
+, html-tidy
+, libgpgerror
+, libsignal-protocol-c
+, usrsctp
+
+, chatType ? "basic" # See the assertion below for available options
+, qtwebkit
+, qtwebengine
+
+, enablePlugins ? true
+
+  # Voice messages
+, voiceMessagesSupport ? true
+, gst_all_1
+
+, enablePsiMedia ? false
+, pkg-config
+}:
+
+assert builtins.elem (lib.toLower chatType) [
+  "basic" # Basic implementation, no web stuff involved
+  "webkit" # Legacy one, based on WebKit (see https://wiki.qt.io/Qt_WebKit)
+  "webengine" # QtWebEngine (see https://wiki.qt.io/QtWebEngine)
+];
+
+assert enablePsiMedia -> enablePlugins;
+
+mkDerivation rec {
+  pname = "psi-plus";
+  version = "1.5.1549";
+
+  src = fetchFromGitHub {
+    owner = "psi-plus";
+    repo = "psi-plus-snapshots";
+    rev = version;
+    sha256 = "0jpv6qzfg6xjwkrnci7fav27nxm174i9l5g4vmsbchqpwfk90z2m";
+  };
+
+  cmakeFlags = [
+    "-DCHAT_TYPE=${chatType}"
+    "-DENABLE_PLUGINS=${if enablePlugins then "ON" else "OFF"}"
+    "-DBUILD_PSIMEDIA=${if enablePsiMedia then "ON" else "OFF"}"
+  ];
+
+  nativeBuildInputs = [
+    cmake
+    qttools
+  ] ++ lib.optionals enablePsiMedia [
+    pkg-config
+  ];
+
+  buildInputs = [
+    qtbase
+    qtmultimedia
+    qtx11extras
+    libidn
+    qca-qt5
+    libXScrnSaver
+    hunspell
+    libsecret
+    libgcrypt
+    libotr
+    html-tidy
+    libgpgerror
+    libsignal-protocol-c
+    usrsctp
+  ] ++ lib.optionals voiceMessagesSupport [
+    gst_all_1.gst-plugins-base
+    gst_all_1.gst-plugins-good
+  ] ++ lib.optionals (chatType == "webkit") [
+    qtwebkit
+  ] ++ lib.optionals (chatType == "webengine") [
+    qtwebengine
+  ];
+
+  preFixup = lib.optionalString voiceMessagesSupport ''
+    qtWrapperArgs+=(
+      --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0"
+    )
+  '';
+
+  meta = with lib; {
+    homepage = "https://psi-plus.com";
+    description = "XMPP (Jabber) client";
+    maintainers = with maintainers; [ orivej misuzu unclechu ];
+    license = licenses.gpl2Only;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/psi/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/psi/default.nix
new file mode 100644
index 000000000000..62b6c8f8e59c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/psi/default.nix
@@ -0,0 +1,32 @@
+{ lib, mkDerivation, fetchFromGitHub, cmake
+, qtbase, qtmultimedia, qtx11extras, qttools, qtwebengine
+, libidn, qca-qt5, libXScrnSaver, hunspell
+}:
+
+mkDerivation rec {
+  pname = "psi";
+  version = "1.5";
+  src = fetchFromGitHub {
+    owner = "psi-im";
+    repo = pname;
+    rev = version;
+    sha256 = "hXDZODHl14kimRlMQ1XjISQ2kk9NS78axVN3U21wkuM=";
+    fetchSubmodules = true;
+  };
+  patches = [
+    ./fix-cmake-hunspell-1.7.patch
+  ];
+  nativeBuildInputs = [ cmake qttools ];
+  buildInputs = [
+    qtbase qtmultimedia qtx11extras qtwebengine
+    libidn qca-qt5 libXScrnSaver hunspell
+  ];
+
+  meta = with lib; {
+    homepage = "https://psi-im.org";
+    description = "An XMPP (Jabber) client";
+    maintainers = [ maintainers.raskin ];
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/psi/fix-cmake-hunspell-1.7.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/psi/fix-cmake-hunspell-1.7.patch
new file mode 100644
index 000000000000..7d5711a6f2bc
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/psi/fix-cmake-hunspell-1.7.patch
@@ -0,0 +1,12 @@
+diff --git a/cmake/modules/FindHunspell.cmake b/cmake/modules/FindHunspell.cmake
+index a2d180b3..3a5aef3a 100644
+--- a/cmake/modules/FindHunspell.cmake
++++ b/cmake/modules/FindHunspell.cmake
+@@ -64,6 +64,7 @@ set(HUNSPELL_NAMES
+ 	hunspell-1.4
+ 	hunspell-1.5
+ 	hunspell-1.6
++	hunspell-1.7
+ 	libhunspell${d}
+ )
+ find_library(
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/pybitmessage/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/pybitmessage/default.nix
new file mode 100644
index 000000000000..279eea2f2d7b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/pybitmessage/default.nix
@@ -0,0 +1,40 @@
+{ lib, fetchFromGitHub, python2Packages, openssl }:
+
+python2Packages.buildPythonApplication rec {
+  pname = "pybitmessage";
+
+  version = "0.6.3.2";
+
+  src = fetchFromGitHub {
+    owner = "bitmessage";
+    repo = "PyBitmessage";
+    rev = version;
+    sha256 = "1lmhbpwsqh1v93krlqqhafw2pc3y0qp8zby186yllbph6s8kdp35";
+  };
+
+  propagatedBuildInputs = with python2Packages; [ msgpack pyqt4 numpy pyopencl setuptools ] ++ [ openssl ];
+
+  preConfigure = ''
+    # Remove interaction and misleading output
+    substituteInPlace setup.py \
+      --replace "nothing = raw_input()" pass \
+      --replace 'print "It looks like building the package failed.\n" \' pass \
+      --replace '    "You may be missing a C++ compiler and the OpenSSL headers."' pass \
+      --replace 'msgpack-python' 'msgpack'
+
+    substituteInPlace src/pyelliptic/openssl.py \
+      --replace "libdir.append(find_library('ssl'))" "libdir.append('${openssl.out}/lib/libssl.so')"
+
+    substituteInPlace src/depends.py \
+      --replace "ctypes.util.find_library('ssl')" "'${openssl.out}/lib/libssl.so'"
+
+  '';
+
+  meta = with lib; {
+    homepage = "https://bitmessage.org/";
+    description = "The official Bitmessage client";
+    license = licenses.mit;
+    maintainers = with maintainers; [ jgillich ];
+    platforms = with platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/qtox/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/qtox/default.nix
new file mode 100644
index 000000000000..656ddade11f8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/qtox/default.nix
@@ -0,0 +1,78 @@
+{ lib
+, stdenv
+, mkDerivation
+, fetchFromGitHub
+, cmake
+, pkg-config
+, perl
+, libtoxcore
+, libpthreadstubs
+, libXdmcp
+, libXScrnSaver
+, qtbase
+, qtsvg
+, qttools
+, qttranslations
+, ffmpeg
+, filter-audio
+, libexif
+, libsodium
+, libopus
+, libvpx
+, openal
+, pcre
+, qrencode
+, sqlcipher
+, AVFoundation
+}:
+
+mkDerivation rec {
+  pname = "qtox";
+  version = "1.17.3";
+
+  src = fetchFromGitHub {
+    owner = "qTox";
+    repo = "qTox";
+    rev = "v${version}";
+    sha256 = "19xgw9bqirxbgvj5cdh20qxh61pkwk838lq1l78n6py1qrs7z5wp";
+  };
+
+  buildInputs = [
+    libtoxcore
+    libpthreadstubs
+    libXdmcp
+    libXScrnSaver
+    qtbase
+    qtsvg
+    qttranslations
+    ffmpeg
+    filter-audio
+    libexif
+    libopus
+    libsodium
+    libvpx
+    openal
+    pcre
+    qrencode
+    sqlcipher
+  ] ++ lib.optionals stdenv.isDarwin [ AVFoundation ];
+
+  nativeBuildInputs = [ cmake pkg-config qttools ]
+    ++ lib.optionals stdenv.isDarwin [ perl ];
+
+  cmakeFlags = [
+    "-DGIT_DESCRIBE=v${version}"
+    "-DENABLE_STATUSNOTIFIER=False"
+    "-DENABLE_GTK_SYSTRAY=False"
+    "-DENABLE_APPINDICATOR=False"
+    "-DTIMESTAMP=1"
+  ];
+
+  meta = with lib; {
+    description = "Qt Tox client";
+    homepage = "https://tox.chat";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ akaWolf peterhoeg ];
+    platforms = platforms.all;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/quaternion/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/quaternion/default.nix
new file mode 100644
index 000000000000..31b37fc2dfb2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/quaternion/default.nix
@@ -0,0 +1,46 @@
+{ mkDerivation, stdenv, lib, fetchFromGitHub, cmake
+, qtbase, qtquickcontrols, qtquickcontrols2, qtkeychain, qtmultimedia, qttools
+, libquotient, libsecret
+}:
+
+mkDerivation rec {
+  pname = "quaternion";
+  version = "0.0.9.5-beta2";
+
+  src = fetchFromGitHub {
+    owner = "QMatrixClient";
+    repo = "Quaternion";
+    rev = version;
+    sha256 = "sha256-K4SMB5kL0YO2OIeNUu4hWqU4E4n4vZDRRsJVYmCZqvM=";
+  };
+
+  buildInputs = [
+    qtbase
+    qtmultimedia
+    qtquickcontrols
+    qtquickcontrols2
+    qtkeychain
+    libquotient
+    libsecret
+  ];
+
+  nativeBuildInputs = [ cmake qttools ];
+
+  postInstall = if stdenv.isDarwin then ''
+    mkdir -p $out/Applications
+    mv $out/bin/quaternion.app $out/Applications
+    rmdir $out/bin || :
+  '' else ''
+    substituteInPlace $out/share/applications/com.github.quaternion.desktop \
+      --replace 'Exec=quaternion' "Exec=$out/bin/quaternion"
+  '';
+
+  meta = with lib; {
+    description =
+      "Cross-platform desktop IM client for the Matrix protocol";
+    homepage = "https://matrix.org/docs/projects/client/quaternion.html";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ peterhoeg ];
+    inherit (qtbase.meta) platforms;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/default.nix
new file mode 100644
index 000000000000..418d490bbd5e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/default.nix
@@ -0,0 +1,28 @@
+{ stdenv, callPackage, fetchurl, lib }:
+
+let
+  mkRambox = opts: callPackage (import ./rambox.nix opts) { };
+in mkRambox rec {
+  pname = "rambox";
+  version = "0.7.8";
+
+  src = {
+    x86_64-linux = fetchurl {
+      url = "https://github.com/ramboxapp/community-edition/releases/download/${version}/Rambox-${version}-linux-x86_64.AppImage";
+      sha256 = "1y3c9xh8594ay95rj9vaqxxzibwpc38n7ixxi2wnsrdbrqrwlc63";
+    };
+    i686-linux = fetchurl {
+      url = "https://github.com/ramboxapp/community-edition/releases/download/${version}/Rambox-${version}-linux-i386.AppImage";
+      sha256 = "07sv384nd2i701fkjgsrlib8jfsa01bvj60gnqdwlnpphlknga3h";
+    };
+  }.${stdenv.system} or (throw "Unsupported system: ${stdenv.system}");
+
+  meta = with lib; {
+    description = "Free and Open Source messaging and emailing app that combines common web applications into one";
+    homepage = "https://rambox.pro";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ];
+    platforms = ["i686-linux" "x86_64-linux"];
+    hydraPlatforms = [];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/pro.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/pro.nix
new file mode 100644
index 000000000000..827cac7c2970
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/pro.nix
@@ -0,0 +1,25 @@
+{ stdenv, callPackage, fetchurl, lib }:
+
+let
+  mkRambox = opts: callPackage (import ./rambox.nix opts) { };
+in mkRambox rec {
+  pname = "rambox-pro";
+  version = "1.5.0";
+
+  desktopName = "Rambox Pro";
+
+  src = {
+    x86_64-linux = fetchurl {
+      url = "https://github.com/ramboxapp/download/releases/download/v${version}/RamboxPro-${version}-linux-x64.AppImage";
+      sha256 = "1g7lrjm8yxklqpc2mp8gy0g61wfilr15dl80r3sh6pa5b4k5spir";
+    };
+  }.${stdenv.system} or (throw "Unsupported system: ${stdenv.system}");
+
+  meta = with lib; {
+    description = "Messaging and emailing app that combines common web applications into one";
+    homepage = "https://rambox.pro";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ chrisaw ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/rambox.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/rambox.nix
new file mode 100644
index 000000000000..df038611c3b1
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/rambox/rambox.nix
@@ -0,0 +1,33 @@
+{ pname, version, src, meta, desktopName ? "Rambox" }:
+
+{ appimageTools, lib, fetchurl, gsettings-desktop-schemas, gtk3, makeDesktopItem }:
+
+let
+  name = "${pname}-${version}";
+
+  desktopItem = (makeDesktopItem {
+    inherit desktopName;
+    name = pname;
+    exec = pname;
+    icon = pname;
+    type = "Application";
+    categories = "Network;";
+  });
+
+  appimageContents = appimageTools.extractType2 {
+    inherit name src;
+  };
+in appimageTools.wrapType2 rec {
+  inherit name src meta;
+  profile = ''
+    export XDG_DATA_DIRS=${gsettings-desktop-schemas}/share/gsettings-schemas/${gsettings-desktop-schemas.name}:${gtk3}/share/gsettings-schemas/${gtk3.name}:$XDG_DATA_DIRS
+  '';
+
+  extraInstallCommands = ''
+    mkdir -p $out/share/applications $out/share/icons/hicolor/256x256/apps
+    # CE uses rambox-<version>, Pro uses rambox
+    mv $out/bin/rambox* $out/bin/${pname}
+    install -Dm644 ${appimageContents}/usr/share/icons/hicolor/256x256/apps/rambox*.png $out/share/icons/hicolor/256x256/apps/${pname}.png
+    install -Dm644 ${desktopItem}/share/applications/* $out/share/applications
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ratox/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ratox/default.nix
new file mode 100644
index 000000000000..58cd952edbbc
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ratox/default.nix
@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchgit, libtoxcore
+, conf ? null }:
+
+with lib;
+
+let
+  configFile = optionalString (conf!=null) (builtins.toFile "config.h" conf);
+
+in stdenv.mkDerivation {
+  pname = "ratox";
+  version = "0.4.20180303";
+
+  src = fetchgit {
+    url = "git://git.2f30.org/ratox.git";
+    rev = "269f7f97fb374a8f9c0b82195c21de15b81ddbbb";
+    sha256 = "0bpn37h8jvsqd66fkba8ky42nydc8acawa5x31yxqlxc8mc66k74";
+  };
+
+  buildInputs = [ libtoxcore ];
+
+  preConfigure = ''
+    substituteInPlace config.mk \
+      --replace '-lsodium -lopus -lvpx ' ""
+
+    ${optionalString (conf!=null) "cp ${configFile} config.def.h"}
+  '';
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  meta = {
+    description = "FIFO based tox client";
+    homepage = "http://ratox.2f30.org/";
+    license = licenses.isc;
+    maintainers = with maintainers; [ ehmry ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ricochet/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ricochet/default.nix
new file mode 100644
index 000000000000..97d8d39f6567
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ricochet/default.nix
@@ -0,0 +1,59 @@
+{ mkDerivation, lib, fetchurl, pkg-config, makeDesktopItem
+, qtbase, qttools, qtmultimedia, qtquick1, qtquickcontrols
+, openssl, protobuf, qmake
+}:
+
+mkDerivation rec {
+  pname = "ricochet";
+  version = "1.1.4";
+
+  src = fetchurl {
+    url = "https://github.com/ricochet-im/ricochet/archive/v${version}.tar.gz";
+    sha256 = "1kfj42ksvj7axc809lb8siqzj5hck2pib427b63a3ipnqc5h1faf";
+  };
+
+  desktopItem = makeDesktopItem {
+    name = "ricochet";
+    exec = "ricochet";
+    icon = "ricochet";
+    desktopName = "Ricochet";
+    genericName = "Ricochet";
+    comment = meta.description;
+    categories = "Office;Email;";
+  };
+
+  buildInputs = [
+    qtbase qttools qtmultimedia qtquick1 qtquickcontrols
+    openssl protobuf
+  ];
+
+  nativeBuildInputs = [ pkg-config qmake ];
+
+  preConfigure = ''
+    export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE $(pkg-config --cflags openssl)"
+  '';
+
+  qmakeFlags = [ "DEFINES+=RICOCHET_NO_PORTABLE" ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ricochet $out/bin
+
+    mkdir -p $out/share/applications
+    cp $desktopItem/share/applications"/"* $out/share/applications
+
+    mkdir -p $out/share/pixmaps
+    cp icons/ricochet.png $out/share/pixmaps/ricochet.png
+  '';
+
+  # RCC: Error in 'translation/embedded.qrc': Cannot find file 'ricochet_en.qm'
+  enableParallelBuilding = false;
+
+  meta = with lib; {
+    description = "Anonymous peer-to-peer instant messaging";
+    homepage = "https://ricochet.im";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.codsl maintainers.jgillich maintainers.np ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/default.nix
new file mode 100644
index 000000000000..94e0dc9c8c2f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/default.nix
@@ -0,0 +1,150 @@
+{ lib, stdenv
+, fetchgit
+, which
+, autoreconfHook
+, pkg-config
+, automake
+, libtool
+, pjsip
+, libyamlcpp
+, alsa-lib
+, libpulseaudio
+, libsamplerate
+, libsndfile
+, dbus
+, dbus_cplusplus
+, ffmpeg_3
+, udev
+, pcre
+, gsm
+, speex
+, boost
+, opendht
+, msgpack
+, gnutls
+, zlib
+, jsoncpp
+, xorg
+, libargon2
+, cryptopp
+, openssl
+, perl
+, python3
+, libupnp
+, speexdsp
+, fetchFromGitHub
+, cmake
+, asio
+}:
+
+let
+  myPython = python3.withPackages (ps: with ps; [
+    pygobject3
+    dbus-python
+  ]);
+
+  src = fetchgit {
+    url = "https://gitlab.savoirfairelinux.com/ring/ring-daemon.git";
+    rev = "006b8dc7be08fe9beb68709af71004e7bc1ceb5c";
+    sha256 = "0ih9g0rismrhx6nqcy3jqfbcs166grg0shnfmrnmykl9h0xy8z47";
+  };
+
+  patchdir = "${src}/contrib/src";
+
+  restbed = import ./restbed.nix {
+    inherit stdenv lib fetchFromGitHub cmake asio openssl;
+    patches = [
+    "${patchdir}/restbed/CMakeLists.patch"
+    "${patchdir}/restbed/strand.patch"
+    "${patchdir}/restbed/uri_cpp.patch"
+    "${patchdir}/restbed/dns-resolution-error.patch"
+    "${patchdir}/restbed/string.patch"
+    ];
+  };
+
+  pjsip' = lib.overrideDerivation pjsip (old: {
+    patches = [
+      "${patchdir}/pjproject/gnutls.patch"
+      ./notestsapps.patch # this one had to be modified
+      "${patchdir}/pjproject/fix_base64.patch"
+      "${patchdir}/pjproject/ipv6.patch"
+      "${patchdir}/pjproject/ice_config.patch"
+      "${patchdir}/pjproject/multiple_listeners.patch"
+      "${patchdir}/pjproject/pj_ice_sess.patch"
+      "${patchdir}/pjproject/fix_turn_fallback.patch"
+      "${patchdir}/pjproject/fix_ioqueue_ipv6_sendto.patch"
+      "${patchdir}/pjproject/add_dtls_transport.patch"
+    ];
+    CFLAGS = "-g -DPJ_ICE_MAX_CAND=256 -DPJ_ICE_MAX_CHECKS=150 -DPJ_ICE_COMP_BITS=2 -DPJ_ICE_MAX_STUN=3 -DPJSIP_MAX_PKT_LEN=8000";
+  });
+in
+stdenv.mkDerivation {
+  pname = "ring-daemon";
+  version = "2017-07-11";
+
+  inherit src;
+
+  nativeBuildInputs = [
+    which
+    autoreconfHook
+    automake
+    libtool
+    pkg-config
+  ];
+
+  buildInputs = [
+    pjsip'
+    libyamlcpp
+    alsa-lib
+    libpulseaudio
+    libsamplerate
+    libsndfile
+    dbus
+    dbus_cplusplus
+    ffmpeg_3
+    udev
+    pcre
+    gsm
+    speex
+    boost
+    opendht
+    msgpack
+    gnutls
+    zlib
+    jsoncpp
+    restbed
+    xorg.libX11
+    libargon2
+    cryptopp
+    openssl
+    perl
+    libupnp
+    speexdsp
+  ];
+
+  postInstall = ''
+    mkdir $out/bin
+    ln -s $out/lib/ring/dring $out/bin/dring
+    cp -R ./tools/dringctrl/ $out/
+    substitute ./tools/dringctrl/dringctrl.py $out/dringctrl/dringctrl.py \
+      --replace '#!/usr/bin/env python3' "#!${myPython}/bin/python3"
+    chmod +x $out/dringctrl/dringctrl.py
+    ln -s $out/dringctrl/dringctrl.py $out/bin/dringctrl.py
+  '';
+
+  meta = with lib; {
+    description = "A Voice-over-IP software phone";
+    longDescription = ''
+      As the SIP/audio daemon and the user interface are separate processes, it
+      is easy to provide different user interfaces. GNU Ring comes with various
+      graphical user interfaces and even scripts to control the daemon from the
+      shell.
+    '';
+    homepage = "https://ring.cx";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ taeer olynch ];
+    platforms = platforms.linux;
+    # pjsip' fails to compile with the supplied patch set, see: https://hydra.nixos.org/build/68667921/nixlog/4
+    broken = true;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/notestsapps.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/notestsapps.patch
new file mode 100644
index 000000000000..842060935b04
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/notestsapps.patch
@@ -0,0 +1,106 @@
+/* diff --git a/Makefile b/Makefile */
+/* index 33a4e6b..a486eb7 100644 */
+/* --- a/Makefile */
+/* +++ b/Makefile */
+/* @@ -4,7 +4,7 @@ include build/host-$(HOST_NAME).mak */
+/*  include version.mak */
+ 
+/*  LIB_DIRS = pjlib/build pjlib-util/build pjnath/build third_party/build pjmedia/build pjsip/build */
+/* -DIRS = $(LIB_DIRS) pjsip-apps/build $(EXTRA_DIRS) */
+/* +DIRS = $(LIB_DIRS) $(EXTRA_DIRS) */
+ 
+/*  ifdef MINSIZE */
+/*  MAKE_FLAGS := MINSIZE=1 */
+diff --git a/pjlib-util/build/Makefile b/pjlib-util/build/Makefile
+index cb601cb..862a78a 100644
+--- a/pjlib-util/build/Makefile
++++ b/pjlib-util/build/Makefile
+@@ -54,7 +54,6 @@ export UTIL_TEST_OBJS += xml.o encryption.o stun.o resolver_test.o test.o \
+ export UTIL_TEST_CFLAGS += $(_CFLAGS)
+ export UTIL_TEST_CXXFLAGS += $(_CXXFLAGS)
+ export UTIL_TEST_LDFLAGS += $(PJLIB_UTIL_LDLIB) $(PJLIB_LDLIB) $(_LDFLAGS)
+-export UTIL_TEST_EXE:=pjlib-util-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 	
+ export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT 
+diff --git a/pjlib/build/Makefile b/pjlib/build/Makefile
+index 1e64950..a75fa65 100644
+--- a/pjlib/build/Makefile
++++ b/pjlib/build/Makefile
+@@ -56,7 +56,6 @@ export TEST_OBJS += activesock.o atomic.o echo_clt.o errno.o exception.o \
+ export TEST_CFLAGS += $(_CFLAGS)
+ export TEST_CXXFLAGS += $(_CXXFLAGS)
+ export TEST_LDFLAGS += $(PJLIB_LDLIB) $(_LDFLAGS)
+-export TEST_EXE := pjlib-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 
+ export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT 
+diff --git a/pjmedia/build/Makefile b/pjmedia/build/Makefile
+index 8012cb7..2ca283a 100644
+--- a/pjmedia/build/Makefile
++++ b/pjmedia/build/Makefile
+@@ -165,7 +165,6 @@ export PJMEDIA_TEST_LDFLAGS += $(PJMEDIA_CODEC_LDLIB) \
+ 			       $(PJLIB_UTIL_LDLIB) \
+ 			       $(PJNATH_LDLIB) \
+ 			       $(_LDFLAGS)
+-export PJMEDIA_TEST_EXE:=pjmedia-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 	
+ export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT 
+diff --git a/pjnath/build/Makefile b/pjnath/build/Makefile
+index 1bc08b5..109f79b 100644
+--- a/pjnath/build/Makefile
++++ b/pjnath/build/Makefile
+@@ -54,7 +54,6 @@ export PJNATH_TEST_OBJS += ice_test.o stun.o sess_auth.o server.o concur_test.o
+ export PJNATH_TEST_CFLAGS += $(_CFLAGS)
+ export PJNATH_TEST_CXXFLAGS += $(_CXXFLAGS)
+ export PJNATH_TEST_LDFLAGS += $(PJNATH_LDLIB) $(PJLIB_UTIL_LDLIB) $(PJLIB_LDLIB) $(_LDFLAGS)
+-export PJNATH_TEST_EXE:=pjnath-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 	
+ ###############################################################################
+@@ -65,7 +64,6 @@ export PJTURN_CLIENT_OBJS += client_main.o
+ export PJTURN_CLIENT_CFLAGS += $(_CFLAGS)
+ export PJTURN_CLIENT_CXXFLAGS += $(_CXXFLAGS)
+ export PJTURN_CLIENT_LDFLAGS += $(PJNATH_LDLIB) $(PJLIB_UTIL_LDLIB) $(PJLIB_LDLIB) $(_LDFLAGS)
+-export PJTURN_CLIENT_EXE:=pjturn-client-$(TARGET_NAME)$(HOST_EXE)
+ 
+ ###############################################################################
+ # Defines for building TURN server application
+@@ -76,7 +74,6 @@ export PJTURN_SRV_OBJS += allocation.o auth.o listener_udp.o \
+ export PJTURN_SRV_CFLAGS += $(_CFLAGS)
+ export PJTURN_SRV_CXXFLAGS += $(_CXXFLAGS)
+ export PJTURN_SRV_LDFLAGS += $(PJNATH_LDLIB) $(PJLIB_UTIL_LDLIB) $(PJLIB_LDLIB) $(_LDFLAGS)
+-export PJTURN_SRV_EXE:=pjturn-srv-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 	
+ 	
+diff --git a/pjsip/build/Makefile b/pjsip/build/Makefile
+index d2a5c2a..7e2ec60 100644
+--- a/pjsip/build/Makefile
++++ b/pjsip/build/Makefile
+@@ -140,7 +140,7 @@ export PJSUA2_LIB_OBJS += $(OS_OBJS) $(M_OBJS) $(CC_OBJS) $(HOST_OBJS) \
+ 			   account.o endpoint.o json.o persistent.o types.o \
+ 			   siptypes.o call.o presence.o media.o
+ export PJSUA2_LIB_CFLAGS += $(_CFLAGS) $(PJ_VIDEO_CFLAGS)
+-export PJSUA2_LIB_CXXFLAGS = $(PJSUA2_LIB_CFLAGS) 
++export PJSUA2_LIB_CXXFLAGS = $(_CXXFLAGS) $(PJ_VIDEO_CFLAGS) 
+ export PJSUA2_LIB_LDFLAGS += $(PJSUA_LIB_LDLIB) \
+ 			     $(PJSIP_UA_LDLIB) \
+ 			     $(PJSIP_SIMPLE_LDLIB) \
+@@ -165,7 +165,6 @@ export PJSUA2_TEST_OBJS += $(OS_OBJS) $(M_OBJS) $(CC_OBJS) $(HOST_OBJS) \
+ export PJSUA2_TEST_CFLAGS += $(_CFLAGS) $(PJ_VIDEO_CFLAGS)
+ export PJSUA2_TEST_CXXFLAGS = $(PJSUA2_LIB_CFLAGS) 
+ export PJSUA2_TEST_LDFLAGS += $(PJ_LDXXFLAGS) $(PJ_LDXXLIBS) $(LDFLAGS)
+-export PJSUA2_TEST_EXE := pjsua2-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT 
+ 
+@@ -195,7 +194,6 @@ export TEST_LDFLAGS += $(PJSIP_LDLIB) \
+ 		       $(PJLIB_UTIL_LDLIB) \
+ 		       $(PJNATH_LDLIB) \
+ 		       $(_LDFLAGS)
+-export TEST_EXE := pjsip-test-$(TARGET_NAME)$(HOST_EXE)
+ 
+ 	
+ export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT 
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/restbed.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/restbed.nix
new file mode 100644
index 000000000000..e2cdb1f05b0e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ring-daemon/restbed.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv
+, fetchFromGitHub
+, cmake
+, asio
+, openssl
+, patches
+}:
+
+stdenv.mkDerivation {
+  pname = "restbed";
+  version = "2016-09-15";
+
+  src = fetchFromGitHub {
+    owner = "Corvusoft";
+    repo = "restbed";
+    rev = "34187502642144ab9f749ab40f5cdbd8cb17a54a";
+    sha256 = "1jb38331fcicyiisqdprhq6zwfc6g518fm3l4qw9aiv5k9nqim22";
+  };
+
+  inherit patches;
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ asio openssl ];
+
+  meta = with lib; {
+    description = "HTTP framework for building networked applications";
+    longDescription = ''
+      HTTP framework for building networked applications that require seamless
+      and secure communication, with the flexability to model a range of
+      business processes. Targeting mobile, tablet, desktop, and embedded
+      production environments.
+    '';
+    homepage = "https://corvusoft.co.uk/";
+    license = licenses.agpl3;
+    maintainers = with maintainers; [ taeer ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ripcord/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ripcord/default.nix
new file mode 100755
index 000000000000..76f93d9d2173
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ripcord/default.nix
@@ -0,0 +1,68 @@
+{ lib, mkDerivation, fetchurl, makeFontsConf, appimageTools
+, qtbase, qtsvg, qtmultimedia, qtwebsockets, qtimageformats
+, autoPatchelfHook, desktop-file-utils, imagemagick
+, twemoji-color-font, xorg, libsodium, libopus, libGL, alsa-lib }:
+
+mkDerivation rec {
+  pname = "ripcord";
+  version = "0.4.29";
+
+  src = let
+    appimage = fetchurl {
+      url = "https://cancel.fm/dl/Ripcord-${version}-x86_64.AppImage";
+      sha256 = "sha256-4yDLPEBDsPKWtLwdpmSyl3b5XCwLAr2/EVtNRrFmmJk=";
+      name = "${pname}-${version}.AppImage";
+    };
+  in appimageTools.extract {
+    name = "${pname}-${version}";
+    src = appimage;
+  };
+
+  nativeBuildInputs = [ autoPatchelfHook desktop-file-utils imagemagick ];
+  buildInputs = [ libsodium libopus libGL alsa-lib ]
+    ++ [ qtbase qtsvg qtmultimedia qtwebsockets qtimageformats ]
+    ++ (with xorg; [ libX11 libXScrnSaver libXcursor xkeyboardconfig ]);
+
+  fontsConf = makeFontsConf {
+    fontDirectories = [ twemoji-color-font ];
+  };
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out
+    cp -r ${src}/{qt.conf,translations,twemoji.ripdb} $out
+
+    for size in 16 32 48 64 72 96 128 192 256 512 1024; do
+      mkdir -p $out/share/icons/hicolor/"$size"x"$size"/apps
+      convert -resize "$size"x"$size" ${src}/Ripcord_Icon.png $out/share/icons/hicolor/"$size"x"$size"/apps/ripcord.png
+    done
+
+    desktop-file-install --dir $out/share/applications \
+      --set-key Exec --set-value ripcord \
+      --set-key Icon --set-value ripcord \
+      --set-key Comment --set-value "${meta.description}" \
+      ${src}/Ripcord.desktop
+    mv $out/share/applications/Ripcord.desktop $out/share/applications/ripcord.desktop
+
+    install -Dm755 ${src}/Ripcord $out/Ripcord
+    patchelf --replace-needed libsodium.so.18 libsodium.so $out/Ripcord
+    makeQtWrapper $out/Ripcord $out/bin/ripcord \
+      --run "cd $out" \
+      --set FONTCONFIG_FILE "${fontsConf}" \
+      --prefix LD_LIBRARY_PATH ":" "${xorg.libXcursor}/lib" \
+      --prefix QT_XKB_CONFIG_ROOT ":" "${xorg.xkeyboardconfig}/share/X11/xkb" \
+      --set RIPCORD_ALLOW_UPDATES 0
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Desktop chat client for Slack and Discord";
+    homepage = "https://cancel.fm/ripcord/";
+    # See: https://cancel.fm/ripcord/shareware-redistribution/
+    license = licenses.unfreeRedistributable;
+    maintainers = with maintainers; [ infinisil ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/default.nix
new file mode 100644
index 000000000000..6a6302e74955
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/default.nix
@@ -0,0 +1,60 @@
+{ lib, stdenv, fetchurl, python27Packages, file }:
+
+let
+  inherit (python27Packages) python;
+  requirements = (import ./requirements.nix {
+    inherit lib fetchurl;
+    pythonPackages = python27Packages;
+  });
+
+in
+  stdenv.mkDerivation rec {
+    pname = "salut-a-toi";
+    version = "0.6.1";
+
+    src = fetchurl {
+      url = "ftp://ftp.goffi.org/sat/sat-${version}.tar.bz2";
+      sha256 = "0kn9403n8fpzl0hsb9kkzicsmzq2fjl627l31yykbqzc4nsr780d";
+    };
+
+    buildInputs = with python27Packages;
+    [
+      python twisted urwid wxPython pygobject2
+      dbus-python wrapPython setuptools file
+      pycrypto pyxdg
+    ] ++  (with requirements; [
+      pyfeed
+      wokkel
+    ]);
+
+    configurePhase = ''
+      sed -i "/use_setuptools/d" setup.py
+      sed -e "s@sys.prefix@'$out'@g" -i setup.py
+      sed -e "1aexport PATH=\"\$PATH\":\"$out/bin\":\"${python27Packages.twisted}/bin\"" -i src/sat.sh
+      sed -e "1aexport PYTHONPATH=\"\$PYTHONPATHPATH\":\"$PYTHONPATH\":"$out/${python.sitePackages}"" -i src/sat.sh
+
+      echo 'import wokkel.muc' | python
+    '';
+
+    buildPhase = ''
+      ${python.interpreter} setup.py build
+    '';
+
+    installPhase = ''
+      ${python.interpreter} setup.py install --prefix="$out"
+
+      for i in "$out/bin"/*; do
+      head -n 1 "$i" | grep -E '[/ ]python( |$)' && {
+        wrapProgram "$i" --prefix PYTHONPATH : "$PYTHONPATH:$out/${python.sitePackages}"
+      } || true
+      done
+    '';
+
+    meta = with lib; {
+      homepage = "http://sat.goffi.org/";
+      description = "A multi-frontend XMPP client";
+      platforms = platforms.linux;
+      maintainers = [ maintainers.raskin ];
+      license = licenses.gpl3Plus;
+    };
+  }
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/requirements.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/requirements.nix
new file mode 100644
index 000000000000..a8e711c447d5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/salut-a-toi/requirements.nix
@@ -0,0 +1,67 @@
+{ fetchurl
+, lib
+, pythonPackages
+}:
+
+let
+  buildPythonPackage = pythonPackages.buildPythonPackage;
+
+  xe = buildPythonPackage rec {
+    url = "http://www.blarg.net/%7Esteveha/xe-0.7.4.tar.gz";
+    name = lib.nameFromURL url ".tar";
+    src = fetchurl {
+      inherit url;
+      sha256 = "0v9878cl0y9cczdsr6xjy8v9l139lc23h4m5f86p4kpf2wlnpi42";
+    };
+
+    # error: invalid command 'test'
+    doCheck = false;
+
+    meta = {
+      homepage = "http://home.blarg.net/~steveha/xe.html";
+      description = "XML elements";
+    };
+  };
+
+in {
+
+  pyfeed = (buildPythonPackage rec {
+    url = "http://www.blarg.net/%7Esteveha/pyfeed-0.7.4.tar.gz";
+
+    name = lib.nameFromURL url ".tar";
+
+    src = fetchurl {
+      inherit url;
+      sha256 = "1h4msq573m7wm46h3cqlx4rsn99f0l11rhdqgf50lv17j8a8vvy1";
+    };
+
+    propagatedBuildInputs = [ xe ];
+
+    # error: invalid command 'test'
+    doCheck = false;
+
+    meta = with lib; {
+      homepage = "http://home.blarg.net/~steveha/pyfeed.html";
+      description = "Tools for syndication feeds";
+    };
+
+  });
+
+  wokkel = buildPythonPackage (rec {
+    url = "http://wokkel.ik.nu/releases/0.7.0/wokkel-0.7.0.tar.gz";
+    name = lib.nameFromURL url ".tar";
+    src = fetchurl {
+      inherit url;
+      sha256 = "0rnshrzw8605x05mpd8ndrx3ri8h6cx713mp8sl4f04f4gcrz8ml";
+    };
+
+    propagatedBuildInputs = with pythonPackages; [twisted python-dateutil];
+
+    meta = with lib; {
+      description = "Some (mainly XMPP-related) additions to twisted";
+      homepage = "http://wokkel.ik.nu/";
+      license = licenses.mit;
+    };
+  });
+
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/scudcloud/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/scudcloud/default.nix
new file mode 100644
index 000000000000..29d4c3600c39
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/scudcloud/default.nix
@@ -0,0 +1,21 @@
+{ lib, fetchurl, python3Packages }:
+
+let version = "1.63";
+in python3Packages.buildPythonPackage {
+  name = "scudcloud-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/raelgc/scudcloud/archive/v${version}.tar.gz";
+    sha256 = "e0d1cb72115d0fda17db92d28be51558ad8fe250972683fac3086dbe8d350d22";
+  };
+
+  propagatedBuildInputs = with python3Packages; [ pyqt5_with_qtwebkit dbus-python jsmin ];
+
+  meta = with lib; {
+    description = "Non-official desktop client for Slack";
+    homepage = "https://github.com/raelgc/scudcloud";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ volhovm ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/seren/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/seren/default.nix
new file mode 100644
index 000000000000..ed02def3eb88
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/seren/default.nix
@@ -0,0 +1,37 @@
+{ lib
+, stdenv
+, fetchurl
+, alsa-lib
+, libopus
+, libogg
+, gmp
+, ncurses
+}:
+
+stdenv.mkDerivation rec {
+  pname = "seren";
+  version = "0.0.21";
+
+  buildInputs = [ alsa-lib libopus libogg gmp ncurses ];
+
+  src = fetchurl {
+    url = "http://holdenc.altervista.org/seren/downloads/${pname}-${version}.tar.gz";
+    sha256 = "sha256-adI365McrJkvTexvnWjMzpHcJkLY3S/uWfE8u4yuqho=";
+  };
+
+  meta = with lib; {
+    description = "A simple ncurses VoIP program based on the Opus codec";
+    longDescription = ''
+      Seren is a simple VoIP program based on the Opus codec
+      that allows you to create a voice conference from the terminal, with up to 10
+      participants, without having to register accounts, exchange emails, or add
+      people to contact lists. All you need to join an existing conference is the
+      host name or IP address of one of the participants.
+    '';
+    homepage = "http://holdenc.altervista.org/seren/";
+    changelog = "http://holdenc.altervista.org/seren/";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ matthewcroughan nixinator ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/signal-cli/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/signal-cli/default.nix
new file mode 100644
index 000000000000..b282c5c5f210
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/signal-cli/default.nix
@@ -0,0 +1,54 @@
+{ stdenv, lib, fetchurl, makeWrapper, openjdk11_headless, libmatthew_java, dbus, dbus_java }:
+
+stdenv.mkDerivation rec {
+  pname = "signal-cli";
+  version = "0.8.5";
+
+  # Building from source would be preferred, but is much more involved.
+  src = fetchurl {
+    url = "https://github.com/AsamK/signal-cli/releases/download/v${version}/signal-cli-${version}.tar.gz";
+    sha256 = "sha256-H895fyI6fdrrqhcgKMxzGSxO5BFuuizjfjBEwvl1yyg=";
+  };
+
+  buildInputs = lib.optionals stdenv.isLinux [ libmatthew_java dbus dbus_java ];
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -r lib $out/lib
+    cp bin/signal-cli $out/bin/signal-cli
+  '' + (if stdenv.isLinux then ''
+    makeWrapper ${openjdk11_headless}/bin/java $out/bin/signal-cli \
+      --set JAVA_HOME "${openjdk11_headless}" \
+      --add-flags "-classpath '$out/lib/*:${libmatthew_java}/lib/jni'" \
+      --add-flags "-Djava.library.path=${libmatthew_java}/lib/jni:${dbus_java}/share/java/dbus:$out/lib" \
+      --add-flags "org.asamk.signal.Main"
+  '' else ''
+    wrapProgram $out/bin/signal-cli \
+      --prefix PATH : ${lib.makeBinPath [ openjdk11_headless ]} \
+      --set JAVA_HOME ${openjdk11_headless}
+  '');
+
+  # Execution in the macOS (10.13) sandbox fails with
+  # dyld: Library not loaded: /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
+  #   Referenced from: /nix/store/5ghc2l65p8jcjh0bsmhahd5m9k5p8kx0-zulu1.8.0_121-8.20.0.5/bin/java
+  #   Reason: no suitable image found.  Did find:
+  #         /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa: file system sandbox blocked stat()
+  #         /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa: file system sandbox blocked stat()
+  # /nix/store/in41dz8byyyz4c0w132l7mqi43liv4yr-stdenv-darwin/setup: line 1310:  2231 Abort trap: 6           signal-cli --version
+  doInstallCheck = stdenv.isLinux;
+
+  installCheckPhase = ''
+    export PATH=$PATH:$out/bin
+    # --help returns non-0 exit code even when working
+    signal-cli --version
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/AsamK/signal-cli";
+    description = "Command-line and dbus interface for communicating with the Signal messaging service";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ ivan erictapen ];
+    platforms = platforms.all;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix
new file mode 100644
index 000000000000..cf46b3e98900
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix
@@ -0,0 +1,155 @@
+{ stdenv, lib, fetchurl, autoPatchelfHook, dpkg, wrapGAppsHook, nixosTests
+, gnome2, gtk3, atk, at-spi2-atk, cairo, pango, gdk-pixbuf, glib, freetype, fontconfig
+, dbus, libX11, xorg, libXi, libXcursor, libXdamage, libXrandr, libXcomposite
+, libXext, libXfixes, libXrender, libXtst, libXScrnSaver, nss, nspr, alsa-lib
+, cups, expat, libuuid, at-spi2-core, libappindicator-gtk3, mesa
+# Runtime dependencies:
+, systemd, libnotify, libdbusmenu, libpulseaudio
+# Unfortunately this also overwrites the UI language (not just the spell
+# checking language!):
+, hunspellDicts, spellcheckerLanguage ? null # E.g. "de_DE"
+# For a full list of available languages:
+# $ cat pkgs/development/libraries/hunspell/dictionaries.nix | grep "dictFileName =" | awk '{ print $3 }'
+}:
+
+let
+  customLanguageWrapperArgs = (with lib;
+    let
+      # E.g. "de_DE" -> "de-de" (spellcheckerLanguage -> hunspellDict)
+      spellLangComponents = splitString "_" spellcheckerLanguage;
+      hunspellDict = elemAt spellLangComponents 0 + "-" + toLower (elemAt spellLangComponents 1);
+    in if spellcheckerLanguage != null
+      then ''
+        --set HUNSPELL_DICTIONARIES "${hunspellDicts.${hunspellDict}}/share/hunspell" \
+        --set LC_MESSAGES "${spellcheckerLanguage}"''
+      else "");
+in stdenv.mkDerivation rec {
+  pname = "signal-desktop";
+  version = "5.16.0"; # Please backport all updates to the stable channel.
+  # All releases have a limited lifetime and "expire" 90 days after the release.
+  # When releases "expire" the application becomes unusable until an update is
+  # applied. The expiration date for the current release can be extracted with:
+  # $ grep -a "^{\"buildExpiration" "${signal-desktop}/lib/Signal/resources/app.asar"
+  # (Alternatively we could try to patch the asar archive, but that requires a
+  # few additional steps and might not be the best idea.)
+
+  src = fetchurl {
+    url = "https://updates.signal.org/desktop/apt/pool/main/s/signal-desktop/signal-desktop_${version}_amd64.deb";
+    sha256 = "1na5ja68h14smfwxrli1kfr6fhf5dshyvcdaj0c4mwms838bdl4j";
+  };
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+    dpkg
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    alsa-lib
+    at-spi2-atk
+    at-spi2-core
+    atk
+    cairo
+    cups
+    dbus
+    expat
+    fontconfig
+    freetype
+    gdk-pixbuf
+    glib
+    gnome2.GConf
+    gtk3
+    libX11
+    libXScrnSaver
+    libXcomposite
+    libXcursor
+    libXdamage
+    libXext
+    libXfixes
+    libXi
+    libXrandr
+    libXrender
+    libXtst
+    libappindicator-gtk3
+    libnotify
+    libuuid
+    mesa # for libgbm
+    nspr
+    nss
+    pango
+    systemd
+    xorg.libxcb
+    xorg.libxshmfence
+  ];
+
+  runtimeDependencies = [
+    (lib.getLib systemd)
+    libnotify
+    libdbusmenu
+  ];
+
+  unpackPhase = "dpkg-deb -x $src .";
+
+  dontBuild = true;
+  dontConfigure = true;
+  dontPatchELF = true;
+  # We need to run autoPatchelf manually with the "no-recurse" option, see
+  # https://github.com/NixOS/nixpkgs/pull/78413 for the reasons.
+  dontAutoPatchelf = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib
+
+    mv usr/share $out/share
+    mv opt/Signal $out/lib/Signal
+
+    # Note: The following path contains bundled libraries:
+    # $out/lib/Signal/resources/app.asar.unpacked/node_modules/sharp/vendor/lib/
+    # We run autoPatchelf with the "no-recurse" option to avoid picking those
+    # up, but resources/app.asar still requires them.
+
+    # Symlink to bin
+    mkdir -p $out/bin
+    ln -s $out/lib/Signal/signal-desktop $out/bin/signal-desktop
+
+    runHook postInstall
+  '';
+
+  # Required for $SQLCIPHER_LIB which contains "/build/" inside the path:
+  noAuditTmpdir = true;
+
+  preFixup = ''
+    export SQLCIPHER_LIB="$out/lib/Signal/resources/app.asar.unpacked/node_modules/better-sqlite3/build/Release/better_sqlite3.node"
+    test -x "$SQLCIPHER_LIB" # To ensure the location hasn't changed
+    gappsWrapperArgs+=(
+      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ stdenv.cc.cc ] }"
+      --prefix LD_PRELOAD : "$SQLCIPHER_LIB"
+      ${customLanguageWrapperArgs}
+    )
+
+    # Fix the desktop link
+    substituteInPlace $out/share/applications/signal-desktop.desktop \
+      --replace /opt/Signal/signal-desktop $out/bin/signal-desktop
+
+    autoPatchelf --no-recurse -- $out/lib/Signal/
+    patchelf --add-needed ${libpulseaudio}/lib/libpulse.so $out/lib/Signal/resources/app.asar.unpacked/node_modules/ringrtc/build/linux/libringrtc-x64.node
+  '';
+
+  # Tests if the application launches and waits for "Link your phone to Signal Desktop":
+  passthru.tests.application-launch = nixosTests.signal-desktop;
+
+  meta = {
+    description = "Private, simple, and secure messenger";
+    longDescription = ''
+      Signal Desktop is an Electron application that links with your
+      "Signal Android" or "Signal iOS" app.
+    '';
+    homepage    = "https://signal.org/";
+    changelog   = "https://github.com/signalapp/Signal-Desktop/releases/tag/v${version}";
+    license     = lib.licenses.agpl3Only;
+    maintainers = with lib.maintainers; [ ixmatus primeos equirosa ];
+    platforms   = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/signald/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/default.nix
new file mode 100644
index 000000000000..a26fbed2a049
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/default.nix
@@ -0,0 +1,95 @@
+{ lib, stdenv, fetchurl, fetchgit, jre_headless, coreutils, gradle_6, git, perl
+, makeWrapper }:
+
+let
+  pname = "signald";
+
+  version = "0.13.1";
+
+  # This package uses the .git directory
+  src = fetchgit {
+    url = "https://gitlab.com/signald/signald";
+    rev = version;
+    sha256 = "1ilmg0i1kw2yc7m3hxw1bqdpl3i9wwbj8623qmz9cxhhavbcd5i7";
+    leaveDotGit = true;
+  };
+
+  buildConfigJar = fetchurl {
+    url = "https://dl.bintray.com/mfuerstenau/maven/gradle/plugin/de/fuerstenau/BuildConfigPlugin/1.1.8/BuildConfigPlugin-1.1.8.jar";
+    sha256 = "0y1f42y7ilm3ykgnm6s3ks54d71n8lsy5649xgd9ahv28lj05x9f";
+  };
+
+  patches = [ ./git-describe-always.patch ./gradle-plugin.patch ];
+
+  postPatch = ''
+    patchShebangs gradlew
+    sed -i -e 's|BuildConfig.jar|${buildConfigJar}|' build.gradle
+  '';
+
+  # fake build to pre-download deps into fixed-output derivation
+  deps = stdenv.mkDerivation {
+    name = "${pname}-deps";
+    inherit src version postPatch patches;
+    nativeBuildInputs = [ gradle_6 perl ];
+    buildPhase = ''
+      export GRADLE_USER_HOME=$(mktemp -d)
+      gradle --no-daemon build
+    '';
+    # perl code mavenizes pathes (com.squareup.okio/okio/1.13.0/a9283170b7305c8d92d25aff02a6ab7e45d06cbe/okio-1.13.0.jar -> com/squareup/okio/okio/1.13.0/okio-1.13.0.jar)
+    installPhase = ''
+      find $GRADLE_USER_HOME/caches/modules-2 -type f -regex '.*\.\(jar\|pom\)' \
+        | perl -pe 's#(.*/([^/]+)/([^/]+)/([^/]+)/[0-9a-f]{30,40}/([^/\s]+))$# ($x = $2) =~ tr|\.|/|; "install -Dm444 $1 \$out/$x/$3/$4/''${\($5 =~ s/-jvm//r)}" #e' \
+        | sh
+    '';
+    # Don't move info to share/
+    forceShare = [ "dummy" ];
+    outputHashAlgo = "sha256";
+    outputHashMode = "recursive";
+    outputHash = "0w8ixp1l0ch1jc2dqzxdx3ljlh17hpgns2ba7qvj43nr4prl71l7";
+  };
+
+in stdenv.mkDerivation rec {
+  inherit pname src version postPatch patches;
+
+  buildPhase = ''
+    runHook preBuild
+
+    export GRADLE_USER_HOME=$(mktemp -d)
+
+    # Use the local packages from -deps
+    sed -i -e 's|mavenCentral()|mavenLocal(); maven { url uri("${deps}") }|' build.gradle
+
+    gradle --offline --no-daemon distTar
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out
+    tar xvf ./build/distributions/signald.tar --strip-components=1 --directory $out/
+    wrapProgram $out/bin/signald \
+      --prefix PATH : ${lib.makeBinPath [ coreutils ]} \
+      --set JAVA_HOME "${jre_headless}"
+
+    runHook postInstall
+  '';
+
+  nativeBuildInputs = [ git gradle_6 makeWrapper ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "Unofficial daemon for interacting with Signal";
+    longDescription = ''
+      Signald is a daemon that facilitates communication over Signal.  It is
+      unofficial, unapproved, and not nearly as secure as the real Signal
+      clients.
+    '';
+    homepage = "https://signald.org";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ expipiplus1 ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/signald/git-describe-always.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/git-describe-always.patch
new file mode 100644
index 000000000000..2f4830e27dd5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/git-describe-always.patch
@@ -0,0 +1,9 @@
+diff --git a/version.sh b/version.sh
+index 7aeeb3c..060cba3 100755
+--- a/version.sh
++++ b/version.sh
+@@ -1,3 +1,3 @@
+ #!/bin/sh
+-VERSION=$(git describe --exact-match 2> /dev/null) || VERSION=$(git describe --abbrev=0)+git$(date +%Y-%m-%d)r$(git rev-parse --short=8 HEAD).$(git rev-list $(git describe --abbrev=0)..HEAD --count)
++VERSION=$(git describe --exact-match 2> /dev/null) || VERSION=$(git describe --always --abbrev=0)+git$(date +%Y-%m-%d)r$(git rev-parse --short=8 HEAD).$(git rev-list $(git describe --always --abbrev=0)..HEAD --count)
+ echo $VERSION
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/signald/gradle-plugin.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/gradle-plugin.patch
new file mode 100644
index 000000000000..6952654758d3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/signald/gradle-plugin.patch
@@ -0,0 +1,26 @@
+diff --git a/build.gradle b/build.gradle
+index 11d7a99..66805bb 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -3,9 +3,12 @@ import org.gradle.nativeplatform.platform.internal.OperatingSystemInternal
+ import org.gradle.nativeplatform.platform.internal.DefaultNativePlatform
+ import org.xml.sax.SAXParseException
+ 
+-plugins {
+-   id 'de.fuerstenau.buildconfig' version '1.1.8'
++buildscript {
++  dependencies {
++    classpath files ("BuildConfig.jar")
++  }
+ }
++apply plugin: 'de.fuerstenau.buildconfig'
+ 
+ apply plugin: 'java'
+ apply plugin: 'application'
+@@ -185,4 +188,4 @@ task integrationTest(type: Test) {
+     testClassesDirs = sourceSets.integrationTest.output.classesDirs
+     classpath = sourceSets.integrationTest.runtimeClasspath
+     outputs.upToDateWhen { false }
+-}
+\ No newline at end of file
++}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/silc-client/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/silc-client/default.nix
new file mode 100644
index 000000000000..417cb4dbb844
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/silc-client/default.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchurl, perl, pkg-config, glib, ncurses
+, enablePlugin ? false }:
+
+# Enabling the plugin and using it with a recent irssi, segafults on join:
+# http://marc.info/?l=silc-devel&m=125610477802211
+
+stdenv.mkDerivation rec {
+  pname = "silc-client" + lib.optionalString enablePlugin "-irssi-plugin";
+  version = "1.1.11";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/silc/silc/client/sources/silc-client-${version}.tar.bz2";
+    sha256 = "13cp3fmdnj8scjak0d2xal3bfvs2k7ssrwdhp0zl6jar5rwc7prn";
+  };
+
+  enableParallelBuilding = true;
+
+  dontDisableStatic = true;
+
+  hardeningDisable = [ "format" ];
+
+  configureFlags = [ "--with-ncurses=${ncurses.dev}" ];
+
+  preConfigure = lib.optionalString enablePlugin ''
+    configureFlags="$configureFlags --with-silc-plugin=$out/lib/irssi"
+  '';
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ perl glib ncurses ];
+
+  meta = {
+    homepage = "http://silcnet.org/";
+    description = "Secure Internet Live Conferencing server";
+    license = lib.licenses.gpl2;
+    maintainers = with lib.maintainers; [viric];
+    platforms = with lib.platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix
new file mode 100644
index 000000000000..7db77fbc31e3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix
@@ -0,0 +1,128 @@
+{ lib, stdenv, fetchurl, dpkg
+, alsa-lib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, gdk-pixbuf, glib, glibc, gnome2, gnome
+, gtk3, libappindicator-gtk3, libnotify, libpulseaudio, libsecret, libv4l, nspr, nss, pango, systemd, wrapGAppsHook, xorg
+, at-spi2-atk, libuuid, at-spi2-core, libdrm, mesa, libxkbcommon, libxshmfence }:
+
+let
+
+  # Please keep the version x.y.0.z and do not update to x.y.76.z because the
+  # source of the latter disappears much faster.
+  version = "8.75.0.140";
+
+  rpath = lib.makeLibraryPath [
+    alsa-lib
+    atk
+    at-spi2-atk
+    at-spi2-core
+    cairo
+    cups
+    curl
+    dbus
+    expat
+    fontconfig
+    freetype
+    glib
+    glibc
+    libsecret
+    libuuid
+
+    gnome2.GConf
+    gdk-pixbuf
+    gtk3
+    libappindicator-gtk3
+
+    gnome.gnome-keyring
+
+    libnotify
+    libpulseaudio
+    nspr
+    nss
+    pango
+    stdenv.cc.cc
+    systemd
+
+    libv4l
+    libdrm
+    mesa
+    libxkbcommon
+    libxshmfence
+    xorg.libxkbfile
+    xorg.libX11
+    xorg.libXcomposite
+    xorg.libXcursor
+    xorg.libXdamage
+    xorg.libXext
+    xorg.libXfixes
+    xorg.libXi
+    xorg.libXrandr
+    xorg.libXrender
+    xorg.libXtst
+    xorg.libXScrnSaver
+    xorg.libxcb
+  ] + ":${stdenv.cc.cc.lib}/lib64";
+
+  src =
+    if stdenv.hostPlatform.system == "x86_64-linux" then
+      fetchurl {
+        urls = [
+          "https://repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
+          "https://mirror.cs.uchicago.edu/skype/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
+          "https://web.archive.org/web/https://repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
+        ];
+        sha256 = "sha256-z3xsl53CSJthSd/BMbMD7RdYQ4z9oI/Rb9jUvd82H4E=";
+      }
+    else
+      throw "Skype for linux is not supported on ${stdenv.hostPlatform.system}";
+
+in stdenv.mkDerivation {
+  pname = "skypeforlinux";
+  inherit version;
+
+  system = "x86_64-linux";
+
+  inherit src;
+
+  nativeBuildInputs = [
+    wrapGAppsHook
+    glib # For setup hook populating GSETTINGS_SCHEMA_PATH
+  ];
+
+  buildInputs = [ dpkg ];
+
+  dontUnpack = true;
+  installPhase = ''
+    mkdir -p $out
+    dpkg -x $src $out
+    cp -av $out/usr/* $out
+    rm -rf $out/opt $out/usr
+    rm $out/bin/skypeforlinux
+
+    ln -s "$out/share/skypeforlinux/skypeforlinux" "$out/bin/skypeforlinux"
+
+    # Otherwise it looks "suspicious"
+    chmod -R g-w $out
+  '';
+
+  postFixup = ''
+    for file in $(find $out -type f \( -perm /0111 -o -name \*.so\* -or -name \*.node\* \) ); do
+      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" "$file" || true
+      patchelf --set-rpath ${rpath}:$out/share/skypeforlinux $file || true
+    done
+
+    # Fix the desktop link
+    substituteInPlace $out/share/applications/skypeforlinux.desktop \
+      --replace /usr/bin/ $out/bin/
+    substituteInPlace $out/share/applications/skypeforlinux-share.desktop \
+      --replace /usr/bin/ $out/bin/
+    substituteInPlace $out/share/kservices5/ServiceMenus/skypeforlinux.desktop \
+      --replace /usr/bin/ $out/bin/
+  '';
+
+  meta = with lib; {
+    description = "Linux client for skype";
+    homepage = "https://www.skype.com";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ panaeon jraygauthier ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/slack-term/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/slack-term/default.nix
new file mode 100644
index 000000000000..30cc7396c562
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/slack-term/default.nix
@@ -0,0 +1,23 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  # https://github.com/erroneousboat/slack-term
+  pname = "slack-term";
+  version = "0.5.0";
+
+  goPackagePath = "github.com/erroneousboat/slack-term";
+
+  src = fetchFromGitHub {
+    owner = "erroneousboat";
+    repo = "slack-term";
+    rev = "v${version}";
+    sha256 = "1fbq7bdhy70hlkklppimgdjamnk0v059pg73xm9ax1f4616ki1m6";
+  };
+
+  meta = with lib; {
+    description = "Slack client for your terminal";
+    homepage = "https://github.com/erroneousboat/slack-term";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix
new file mode 100644
index 000000000000..61a859e331ec
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix
@@ -0,0 +1,196 @@
+{ lib
+, stdenv
+, fetchurl
+, dpkg
+, undmg
+, makeWrapper
+, nodePackages
+, alsa-lib
+, at-spi2-atk
+, at-spi2-core
+, atk
+, cairo
+, cups
+, curl
+, dbus
+, expat
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, gnome2
+, gtk3
+, libGL
+, libappindicator-gtk3
+, libdrm
+, libnotify
+, libpulseaudio
+, libuuid
+, libxcb
+, libxkbcommon
+, libxshmfence
+, mesa
+, nspr
+, nss
+, pango
+, systemd
+, xdg-utils
+, xorg
+}:
+
+let
+  inherit (stdenv.hostPlatform) system;
+  throwSystem = throw "Unsupported system: ${system}";
+
+  pname = "slack";
+
+  x86_64-darwin-version = "4.18.0";
+  x86_64-darwin-sha256 = "1qldmh0xdbl18gvxxsi2jvcq1ziwap3naxgax4gn36x5k25ipw5k";
+
+  x86_64-linux-version = "4.18.0";
+  x86_64-linux-sha256 = "1dhdmi2rvww8m6400c5dc0c6mrircvflgwcja2rr7ry0lv98n6kh";
+
+  aarch64-darwin-version = "4.18.0";
+  aarch64-darwin-sha256 = "0qlfxskqq5gr45p1gfc2jcbr1abhc6di653jwjgh7yibim0hpjab";
+
+  version = {
+    x86_64-darwin = x86_64-darwin-version;
+    aarch64-darwin = aarch64-darwin-version;
+    x86_64-linux = x86_64-linux-version;
+  }.${system} or throwSystem;
+
+  src =
+    let
+      base = "https://downloads.slack-edge.com";
+    in
+      {
+        x86_64-darwin = fetchurl {
+          url = "${base}/releases/macos/${version}/prod/x64/Slack-${version}-macOS.dmg";
+          sha256 = x86_64-darwin-sha256;
+        };
+        aarch64-darwin = fetchurl {
+          url = "${base}/releases/macos/${version}/prod/arm64/Slack-${version}-macOS.dmg";
+          sha256 = aarch64-darwin-sha256;
+        };
+        x86_64-linux = fetchurl {
+          url = "${base}/linux_releases/slack-desktop-${version}-amd64.deb";
+          sha256 = x86_64-linux-sha256;
+        };
+      }.${system} or throwSystem;
+
+  meta = with lib; {
+    description = "Desktop client for Slack";
+    homepage = "https://slack.com";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ mmahut ];
+    platforms = [ "x86_64-darwin" "x86_64-linux" "aarch64-darwin"];
+  };
+
+  linux = stdenv.mkDerivation rec {
+    inherit pname version src meta;
+
+    passthru.updateScript = ./update.sh;
+
+    rpath = lib.makeLibraryPath [
+      alsa-lib
+      at-spi2-atk
+      at-spi2-core
+      atk
+      cairo
+      cups
+      curl
+      dbus
+      expat
+      fontconfig
+      freetype
+      gdk-pixbuf
+      glib
+      gnome2.GConf
+      gtk3
+      libGL
+      libappindicator-gtk3
+      libdrm
+      libnotify
+      libpulseaudio
+      libuuid
+      libxcb
+      libxkbcommon
+      mesa
+      nspr
+      nss
+      pango
+      stdenv.cc.cc
+      systemd
+      xorg.libX11
+      xorg.libXScrnSaver
+      xorg.libXcomposite
+      xorg.libXcursor
+      xorg.libXdamage
+      xorg.libXext
+      xorg.libXfixes
+      xorg.libXi
+      xorg.libXrandr
+      xorg.libXrender
+      xorg.libXtst
+      xorg.libxkbfile
+      xorg.libxshmfence
+    ] + ":${stdenv.cc.cc.lib}/lib64";
+
+    buildInputs = [
+      gtk3 # needed for GSETTINGS_SCHEMAS_PATH
+    ];
+
+    nativeBuildInputs = [ dpkg makeWrapper nodePackages.asar ];
+
+    dontUnpack = true;
+    dontBuild = true;
+    dontPatchELF = true;
+
+    installPhase = ''
+      # The deb file contains a setuid binary, so 'dpkg -x' doesn't work here
+      dpkg --fsys-tarfile $src | tar --extract
+      rm -rf usr/share/lintian
+
+      mkdir -p $out
+      mv usr/* $out
+
+      # Otherwise it looks "suspicious"
+      chmod -R g-w $out
+
+      for file in $(find $out -type f \( -perm /0111 -o -name \*.so\* \) ); do
+        patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" "$file" || true
+        patchelf --set-rpath ${rpath}:$out/lib/slack $file || true
+      done
+
+      # Replace the broken bin/slack symlink with a startup wrapper
+      rm $out/bin/slack
+      makeWrapper $out/lib/slack/slack $out/bin/slack \
+        --prefix XDG_DATA_DIRS : $GSETTINGS_SCHEMAS_PATH \
+        --prefix PATH : ${lib.makeBinPath [xdg-utils]}
+
+      # Fix the desktop link
+      substituteInPlace $out/share/applications/slack.desktop \
+        --replace /usr/bin/ $out/bin/ \
+        --replace /usr/share/ $out/share/
+    '';
+  };
+
+  darwin = stdenv.mkDerivation {
+    inherit pname version src meta;
+
+    passthru.updateScript = ./update.sh;
+
+    nativeBuildInputs = [ undmg ];
+
+    sourceRoot = "Slack.app";
+
+    installPhase = ''
+      mkdir -p $out/Applications/Slack.app
+      cp -R . $out/Applications/Slack.app
+      /usr/bin/defaults write com.tinyspeck.slackmacgap SlackNoAutoUpdates -bool YES
+    '';
+  };
+in
+if stdenv.isDarwin
+then darwin
+else linux
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/slack/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/slack/update.sh
new file mode 100755
index 000000000000..0bb0d784167c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/slack/update.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p curl gnused
+
+set -eou pipefail
+
+latest_linux_version=$(curl -L --silent https://slack.com/downloads/linux | sed -n 's/.*Version \([0-9\.]\+\).*/\1/p')
+latest_mac_version=$(curl -L --silent https://slack.com/downloads/mac | sed -n 's/.*Version \([0-9\.]\+\).*/\1/p')
+
+# Double check that the latest mac and linux versions are in sync.
+if [[ "$latest_linux_version" != "$latest_mac_version" ]]; then
+  echo "the latest linux ($latest_linux_version) and mac ($latest_mac_version) versions are not the same"
+  exit 1
+fi
+
+nixpkgs="$(git rev-parse --show-toplevel)"
+slack_nix="$nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix"
+nixpkgs_linux_version=$(cat "$slack_nix" | sed -n 's/.*x86_64-linux-version = \"\([0-9\.]\+\)\";.*/\1/p')
+nixpkgs_mac_version=$(cat "$slack_nix" | sed -n 's/.*x86_64-darwin-version = \"\([0-9\.]\+\)\";.*/\1/p')
+
+if [[ "$nixpkgs_linux_version" == "$latest_linux_version" && "$nixpkgs_mac_version" == "$latest_mac_version" ]]; then
+  echo "nixpkgs versions are all up to date!"
+  exit 0
+fi
+
+linux_url="https://downloads.slack-edge.com/linux_releases/slack-desktop-${latest_linux_version}-amd64.deb"
+mac_url="https://downloads.slack-edge.com/releases/macos/${latest_mac_version}/prod/x64/Slack-${latest_mac_version}-macOS.dmg"
+linux_sha256=$(nix-prefetch-url ${linux_url})
+mac_sha256=$(nix-prefetch-url ${mac_url})
+
+sed -i "s/x86_64-linux-version = \".*\"/x86_64-linux-version = \"${latest_linux_version}\"/" "$slack_nix"
+sed -i "s/x86_64-darwin-version = \".*\"/x86_64-darwin-version = \"${latest_mac_version}\"/" "$slack_nix"
+sed -i "s/x86_64-linux-sha256 = \".*\"/x86_64-linux-sha256 = \"${linux_sha256}\"/" "$slack_nix"
+sed -i "s/x86_64-darwin-sha256 = \".*\"/x86_64-darwin-sha256 = \"${mac_sha256}\"/" "$slack_nix"
+
+if ! nix-build -A slack "$nixpkgs"; then
+  echo "The updated slack failed to build."
+  exit 1
+fi
+
+echo "Successfully updated"
+echo "slack: $nixpkgs_linux_version -> $latest_linux_version"
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ssh-chat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ssh-chat/default.nix
new file mode 100644
index 000000000000..71693485a1b0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ssh-chat/default.nix
@@ -0,0 +1,22 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "ssh-chat";
+  version = "1.10.1";
+
+  src = fetchFromGitHub {
+    owner = "shazow";
+    repo = "ssh-chat";
+    rev = "v${version}";
+    sha256 = "LgrqIuM/tLC0JqDai2TLu6G/edZ5Q7WFXjX5bzc0Bcc=";
+  };
+
+  vendorSha256 = "QTUBorUAsWDOpNP3E/Y6ht7ZXZViWBbrMPtLl7lHtgE=";
+
+  meta = with lib; {
+    description = "Chat over SSH";
+    homepage = "https://github.com/shazow/ssh-chat";
+    license = licenses.mit;
+    maintainers = with maintainers; [ luc65r ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/stride/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/stride/default.nix
new file mode 100644
index 000000000000..026dc5b64056
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/stride/default.nix
@@ -0,0 +1,68 @@
+{ lib, stdenv, fetchurl, dpkg, alsa-lib, atk, cairo, cups, dbus, expat, fontconfig
+, freetype, gdk-pixbuf, glib, gnome2, gtk2, nspr, nss, pango, udev, xorg }:
+let
+  fullPath = lib.makeLibraryPath [
+    alsa-lib
+    atk
+    cairo
+    cups
+    dbus
+    expat
+    fontconfig
+    freetype
+    gdk-pixbuf
+    glib
+    gnome2.GConf
+    gtk2
+    nspr
+    nss
+    pango
+    udev
+    xorg.libX11
+    xorg.libXScrnSaver
+    xorg.libXcomposite
+    xorg.libXcursor
+    xorg.libXdamage
+    xorg.libXext
+    xorg.libXfixes
+    xorg.libXi
+    xorg.libXrandr
+    xorg.libXrender
+    xorg.libXtst
+    xorg.libxcb
+  ] + ":${stdenv.cc.cc.lib}/lib64";
+in
+stdenv.mkDerivation rec {
+  version = "1.17.82";
+  pname = "stride";
+
+  src = fetchurl {
+    url = "https://packages.atlassian.com/stride-apt-client/pool/stride_${version}_amd64.deb";
+    sha256 = "0lx61gdhw0kv4f9fwbfg69yq52dsp4db7c4li25d6wn11qanzqhy";
+  };
+
+  dontBuild = true;
+  dontFixup = true;
+
+  buildInputs = [ dpkg ];
+
+  unpackPhase = ''
+    dpkg-deb -x ${src} ./
+  '';
+
+  installPhase =''
+    mkdir "$out"
+    mv usr/* "$out/"
+    patchelf --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+      --set-rpath "${fullPath}:\$ORIGIN" \
+      "$out/bin/stride"
+  '';
+
+  meta = with lib; {
+    description = "Desktop client for Atlassian Stride";
+    homepage = "https://www.stride.com/";
+    license = licenses.unfree;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ puffnfresh ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/default.nix
new file mode 100644
index 000000000000..58335bed4218
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/default.nix
@@ -0,0 +1,44 @@
+{ mkDerivation, lib, fetchurl, pkg-config, qttools, sconsPackages
+, GConf, avahi, boost, hunspell, libXScrnSaver, libedit, libidn, libnatpmp, libxml2
+, lua, miniupnpc, openssl, qtbase, qtmultimedia, qtsvg, qtwebkit, qtx11extras, zlib
+}:
+
+mkDerivation rec {
+  pname = "swift-im";
+  version = "4.0.2";
+
+  src = fetchurl {
+    url = "https://swift.im/downloads/releases/swift-${version}/swift-${version}.tar.gz";
+    sha256 = "0w0aiszjd58ynxpacwcgf052zpmbpcym4dhci64vbfgch6wryz0w";
+  };
+
+  patches = [ ./qt-5.11.patch ./scons.patch ];
+
+  nativeBuildInputs = [ pkg-config qttools sconsPackages.scons_3_1_2 ];
+
+  buildInputs = [
+    GConf avahi boost hunspell libXScrnSaver libedit libidn libnatpmp libxml2
+    lua miniupnpc openssl qtbase qtmultimedia qtsvg qtwebkit qtx11extras zlib
+  ];
+
+  propagatedUserEnvPkgs = [ GConf ];
+
+  NIX_CFLAGS_COMPILE = toString [
+    "-I${libxml2.dev}/include/libxml2"
+    "-I${miniupnpc}/include/miniupnpc"
+    "-I${qtwebkit.dev}/include/QtWebKit"
+    "-I${qtwebkit.dev}/include/QtWebKitWidgets"
+    "-fpermissive"
+  ];
+
+  installTargets = [ (placeholder "out") ];
+  installFlags = [ "SWIFT_INSTALLDIR=${placeholder "out"}" ];
+
+  meta = with lib; {
+    homepage = "https://swift.im/";
+    description = "Qt XMPP client";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ orivej ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/qt-5.11.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/qt-5.11.patch
new file mode 100644
index 000000000000..911e7570427f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/qt-5.11.patch
@@ -0,0 +1,10 @@
+--- a/Swift/QtUI/UserSearch/QtUserSearchWindow.h
++++ b/Swift/QtUI/UserSearch/QtUserSearchWindow.h
+@@ -8,6 +8,7 @@
+
+ #include <set>
+
++#include <QAbstractItemModel>
+ #include <QWizard>
+
+ #include <Swiften/Base/Override.h>
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/scons.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/scons.patch
new file mode 100644
index 000000000000..c63b05d7acb1
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/swift-im/scons.patch
@@ -0,0 +1,53 @@
+diff --git a/BuildTools/SCons/SConscript.boot b/BuildTools/SCons/SConscript.boot
+index 40f242513..53e1ff26a 100644
+--- a/BuildTools/SCons/SConscript.boot
++++ b/BuildTools/SCons/SConscript.boot
+@@ -508,6 +508,7 @@ if env.get("distcc", False) :
+         if var.startswith("DISTCC_") :
+             env["ENV"][var] = os.environ[var]
+ 
++env["ENV"] = os.environ
+ conf_env = env.Clone()
+ 
+ Export("env")
+diff --git a/BuildTools/SCons/SConstruct b/BuildTools/SCons/SConstruct
+index 70bffbcfe..fef281899 100644
+--- a/BuildTools/SCons/SConstruct
++++ b/BuildTools/SCons/SConstruct
+@@ -272,7 +272,7 @@ if env.get("try_gconf", True) and env["PLATFORM"] != "win32" and env["PLATFORM"]
+     gconf_env = conf_env.Clone()
+     conf = Configure(gconf_env, custom_tests = {"CheckPKG": CheckPKG})
+     if conf.CheckPKG("gconf-2.0") :
+-        gconf_bare_env = Environment()
++        gconf_bare_env = Environment(ENV = os.environ)
+         gconf_bare_env.ParseConfig('pkg-config --cflags gconf-2.0 gobject-2.0 --libs gconf-2.0 gobject-2.0')
+         if os.path.basename(env["CXX"]).startswith(("g++", "clang++")) :
+             gconf_bare_env["CCFLAGS"] = [("-isystem" + ccflag) for ccflag in gconf_bare_env["CPPPATH"]]
+@@ -634,9 +634,9 @@ hunspell_env.MergeFlags(hunspell_flags)
+ env["HAVE_HUNSPELL"] = 0;
+ if env.get("hunspell_enable", False) :
+     hunspell_conf = Configure(hunspell_env)
+-    if hunspell_conf.CheckCXXHeader("hunspell/hunspell.hxx") and hunspell_conf.CheckLib("hunspell") :
++    if hunspell_conf.CheckCXXHeader("hunspell/hunspell.hxx") and hunspell_conf.CheckLib("hunspell-1.6") :
+         env["HAVE_HUNSPELL"] = 1
+-        hunspell_flags["LIBS"] = ["hunspell"]
++        hunspell_flags["LIBS"] = ["hunspell-1.6"]
+         env["HUNSPELL_FLAGS"] = hunspell_flags
+     hunspell_conf.Finish()
+ 
+diff --git a/BuildTools/SCons/Tools/textfile.py b/BuildTools/SCons/Tools/textfile.py
+index 89f8963dc..b8559f7a6 100644
+--- a/BuildTools/SCons/Tools/textfile.py
++++ b/BuildTools/SCons/Tools/textfile.py
+@@ -113,7 +113,10 @@ def _action(target, source, env):
+     lsep = None
+     for s in source:
+         if lsep: fd.write(lsep)
+-        fd.write(_do_subst(s, subs))
++        b = _do_subst(s, subs)
++        if isinstance(b, unicode):
++            b = b.encode('UTF-8')
++        fd.write(b)
+         lsep = linesep
+     fd.close()
+ 
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/tangram/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/tangram/default.nix
new file mode 100644
index 000000000000..e7ca8c320ac6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/tangram/default.nix
@@ -0,0 +1,56 @@
+{ stdenv, lib, fetchFromGitHub, appstream-glib, desktop-file-utils, gdk-pixbuf
+, gettext, gjs, glib, gobject-introspection, gsettings-desktop-schemas, gtk3
+, hicolor-icon-theme, meson, ninja, pkg-config, python3, webkitgtk, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "tangram";
+  version = "1.3.1";
+
+  src = fetchFromGitHub {
+    owner = "sonnyp";
+    repo = "Tangram";
+    rev = "v${version}";
+    sha256 = "0bhs9s6c2k06i3cx01h2102lgl7g6vxm3k63jkkhh2bwdpc9kvn3";
+    fetchSubmodules = true;
+  };
+
+  buildInputs = [ gdk-pixbuf gjs glib gsettings-desktop-schemas gtk3 webkitgtk ];
+
+  nativeBuildInputs = [
+    appstream-glib
+    desktop-file-utils
+    gettext
+    gobject-introspection
+    hicolor-icon-theme
+    meson
+    ninja
+    pkg-config
+    python3
+    wrapGAppsHook
+  ];
+
+  dontWrapGApps = true;
+
+  # Fixes https://github.com/NixOS/nixpkgs/issues/31168
+  postPatch = ''
+    chmod +x build-aux/meson/postinstall.py
+    patchShebangs build-aux/meson/postinstall.py
+  '';
+
+  postFixup = ''
+    for file in $out/bin/re.sonny.Tangram; do
+      sed -e $"2iimports.package._findEffectiveEntryPointName = () => \'$(basename $file)\' " \
+         -i $file
+      wrapGApp "$file"
+     done
+  '';
+
+  meta = with lib; {
+    description = "Run web apps on your desktop";
+    homepage = "https://github.com/sonnyp/Tangram";
+    license = licenses.gpl3Only;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ austinbutler ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/teams/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/teams/default.nix
new file mode 100644
index 000000000000..1267340c0985
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/teams/default.nix
@@ -0,0 +1,122 @@
+{ lib
+, stdenv
+, fetchurl
+, autoPatchelfHook
+, wrapGAppsHook
+, dpkg
+, atomEnv
+, libuuid
+, libappindicator-gtk3
+, pulseaudio
+, at-spi2-atk
+, coreutils
+, gawk
+, xdg-utils
+, systemd
+, nodePackages
+, enableRectOverlay ? false }:
+
+stdenv.mkDerivation rec {
+  pname = "teams";
+  version = "1.4.00.13653";
+
+  src = fetchurl {
+    url = "https://packages.microsoft.com/repos/ms-teams/pool/main/t/teams/teams_${version}_amd64.deb";
+    sha256 = "1kx4j837fd344zy90nl0j3r8cdvihy6i6gf56wd5n56zngx1fhjv";
+  };
+
+  nativeBuildInputs = [ dpkg autoPatchelfHook wrapGAppsHook nodePackages.asar ];
+
+  unpackCmd = "dpkg -x $curSrc .";
+
+  buildInputs = atomEnv.packages ++ [
+    libuuid
+    at-spi2-atk
+  ];
+
+  runtimeDependencies = [
+    (lib.getLib systemd)
+    pulseaudio
+    libappindicator-gtk3
+  ];
+
+  preFixup = ''
+    gappsWrapperArgs+=(--prefix PATH : "${coreutils}/bin:${gawk}/bin")
+    gappsWrapperArgs+=(--add-flags --disable-namespace-sandbox)
+    gappsWrapperArgs+=(--add-flags --disable-setuid-sandbox)
+  '';
+
+
+  buildPhase = ''
+    runHook preBuild
+
+    asar extract share/teams/resources/app.asar "$TMP/work"
+    substituteInPlace $TMP/work/main.bundle.js \
+        --replace "/usr/share/pixmaps/" "$out/share/pixmaps" \
+        --replace "/usr/bin/xdg-mime" "${xdg-utils}/bin/xdg-mime" \
+        --replace "Exec=/usr/bin/" "Exec=" # Remove usage of absolute path in autostart.
+    asar pack --unpack='{*.node,*.ftz,rect-overlay}' "$TMP/work" share/teams/resources/app.asar
+
+    runHook postBuild
+  '';
+
+  preferLocalBuild = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/{opt,bin}
+
+    mv share/teams $out/opt/
+    mv share $out/share
+
+    substituteInPlace $out/share/applications/teams.desktop \
+      --replace /usr/bin/ ""
+
+    ln -s $out/opt/teams/teams $out/bin/
+
+    ${lib.optionalString (!enableRectOverlay) ''
+    # Work-around screen sharing bug
+    # https://docs.microsoft.com/en-us/answers/questions/42095/sharing-screen-not-working-anymore-bug.html
+    rm $out/opt/teams/resources/app.asar.unpacked/node_modules/slimcore/bin/rect-overlay
+    ''}
+
+    runHook postInstall
+  '';
+
+  dontAutoPatchelf = true;
+
+  # Includes runtimeDependencies in the RPATH of the included Node modules
+  # so that dynamic loading works. We cannot use directly runtimeDependencies
+  # here, since the libraries from runtimeDependencies are not propagated
+  # to the dynamically loadable node modules because of a condition in
+  # autoPatchElfHook since *.node modules have Type: DYN (Shared object file)
+  # instead of EXEC or INTERP it expects.
+  # Fixes: https://github.com/NixOS/nixpkgs/issues/85449
+  postFixup = ''
+    autoPatchelf "$out"
+
+    runtime_rpath="${lib.makeLibraryPath runtimeDependencies}"
+
+    for mod in $(find "$out/opt/teams" -name '*.node'); do
+      mod_rpath="$(patchelf --print-rpath "$mod")"
+
+      echo "Adding runtime dependencies to RPATH of Node module $mod"
+      patchelf --set-rpath "$runtime_rpath:$mod_rpath" "$mod"
+    done;
+
+    # fix for https://docs.microsoft.com/en-us/answers/questions/298724/open-teams-meeting-link-on-linux-doens39t-work.html?childToView=309406#comment-309406
+    # while we create the wrapper ourselves, gappsWrapperArgs leads to the same issue
+    # another option would be to introduce gappsWrapperAppendedArgs, to allow control of positioning
+    substituteInPlace "$out/bin/teams" --replace '.teams-wrapped"  --disable-namespace-sandbox --disable-setuid-sandbox "$@"' '.teams-wrapped" "$@" --disable-namespace-sandbox --disable-setuid-sandbox'
+  '';
+
+  meta = with lib; {
+    description = "Microsoft Teams";
+    homepage = "https://teams.microsoft.com";
+    downloadPage = "https://teams.microsoft.com/downloads";
+    license = licenses.unfree;
+    maintainers = [ maintainers.liff ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/client.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/client.nix
new file mode 100644
index 000000000000..048d40082daa
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/client.nix
@@ -0,0 +1,148 @@
+{ lib, stdenv, fetchurl, makeWrapper, makeDesktopItem, zlib, glib, libpng, freetype, openssl
+, xorg, fontconfig, qtbase, qtwebengine, qtwebchannel, qtsvg, qtwebsockets, xkeyboard_config
+, alsa-lib, libpulseaudio ? null, libredirect, quazip, which, unzip, llvmPackages, writeShellScriptBin
+}:
+
+let
+
+  arch = if stdenv.is64bit then "amd64" else "x86";
+
+  libDir = if stdenv.is64bit then "lib64" else "lib";
+
+  deps =
+    [ zlib glib libpng freetype xorg.libSM xorg.libICE xorg.libXrender openssl
+      xorg.libXrandr xorg.libXfixes xorg.libXcursor xorg.libXinerama
+      xorg.libxcb fontconfig xorg.libXext xorg.libX11 alsa-lib qtbase qtwebengine qtwebchannel qtsvg
+      qtwebsockets libpulseaudio quazip llvmPackages.libcxx llvmPackages.libcxxabi
+    ];
+
+  desktopItem = makeDesktopItem {
+    name = "teamspeak";
+    exec = "ts3client";
+    icon = "teamspeak";
+    comment = "The TeamSpeak voice communication tool";
+    desktopName = "TeamSpeak";
+    genericName = "TeamSpeak";
+    categories = "Network";
+  };
+
+  fakeLess = writeShellScriptBin "less" "cat";
+
+in
+
+stdenv.mkDerivation rec {
+  pname = "teamspeak-client";
+
+  version = "3.5.6";
+
+  src = fetchurl {
+    url = "https://files.teamspeak-services.com/releases/client/${version}/TeamSpeak3-Client-linux_${arch}-${version}.run";
+    sha256 = if stdenv.is64bit
+                then "sha256:0hjai1bd4mq3g2dlyi0zkn8s4zlgxd38skw77mb78nc4di5gvgpg"
+                else "sha256:1y1c65nap91nv9xkvd96fagqbfl56p9n0rl6iac0i29bkysdmija";
+  };
+
+  # grab the plugin sdk for the desktop icon
+  pluginsdk = fetchurl {
+    url = "http://dl.4players.de/ts/client/pluginsdk/pluginsdk_3.1.1.1.zip";
+    sha256 = "1bywmdj54glzd0kffvr27r84n4dsd0pskkbmh59mllbxvj0qwy7f";
+  };
+
+  nativeBuildInputs = [ makeWrapper fakeLess which unzip ];
+
+  unpackPhase =
+    ''
+      echo -e '\ny' | sh -xe $src
+      cd TeamSpeak*
+    '';
+
+  buildPhase =
+    ''
+      mv ts3client_linux_${arch} ts3client
+      echo "patching ts3client..."
+      patchelf --replace-needed libquazip.so ${quazip}/lib/libquazip1-qt5.so ts3client
+      patchelf \
+        --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+        --set-rpath ${lib.makeLibraryPath deps}:$(cat $NIX_CC/nix-support/orig-cc)/${libDir} \
+        --force-rpath \
+        ts3client
+    '';
+
+  installPhase =
+    ''
+      # Delete unecessary libraries - these are provided by nixos.
+      rm *.so.* *.so
+      rm QtWebEngineProcess
+      rm qt.conf
+      rm -r platforms # contains libqxcb.so
+
+      # Install files.
+      mkdir -p $out/lib/teamspeak
+      mv * $out/lib/teamspeak/
+
+      # Make a desktop item
+      mkdir -p $out/share/applications/ $out/share/icons/
+      unzip ${pluginsdk}
+      cp pluginsdk/docs/client_html/images/logo.png $out/share/icons/teamspeak.png
+      cp ${desktopItem}/share/applications/* $out/share/applications/
+
+      # Make a symlink to the binary from bin.
+      mkdir -p $out/bin/
+      ln -s $out/lib/teamspeak/ts3client $out/bin/ts3client
+
+      wrapProgram $out/bin/ts3client \
+        --set LD_PRELOAD "${libredirect}/lib/libredirect.so" \
+        --set QT_PLUGIN_PATH "${qtbase}/${qtbase.qtPluginPrefix}" \
+        --set NIX_REDIRECTS /usr/share/X11/xkb=${xkeyboard_config}/share/X11/xkb
+    '';
+
+  dontStrip = true;
+  dontPatchELF = true;
+
+  meta = with lib; {
+    description = "The TeamSpeak voice communication tool";
+    homepage = "https://teamspeak.com/";
+    license = {
+      fullName = "Teamspeak client license";
+      url = "https://www.teamspeak.com/en/privacy-and-terms/";
+      free = false;
+    };
+    maintainers = with maintainers; [ lhvwb lukegb ];
+    platforms = [ "i686-linux" "x86_64-linux" ];
+  };
+}
+
+/*
+License issues:
+Date: Mon, 10 Dec 2007 19:55:16 -0500
+From: TeamSpeak Sales <sales@tritoncia.com>
+To: 'Marc Weber' <marco-oweber@gmx.de>
+Subject: RE: teamspeak on nix?
+
+Yes, that would be fine.  As long as you are not renting servers or selling
+TeamSpeak then you are more than welcome to distribute it.
+
+Thank you,
+
+TeamSpeak Sales Team
+________________________________
+e-Mail: sales@tritoncia.com
+TeamSpeak: http://www.TeamSpeak.com
+Account Login: https://sales.TritonCIA.com/users
+
+
+
+-----Original Message-----
+From: Marc Weber [mailto:marco-oweber@gmx.de]
+Sent: Monday, December 10, 2007 5:03 PM
+To: sales@tritoncia.com
+Subject: teamspeak on nix?
+
+Hello,
+
+nix is very young software distribution system (http://nix.cs.uu.nl/)
+I'd like to ask wether you permit us to add teamspeak (server/ client?)
+
+Sincerly
+Marc Weber (small nix contributor)
+*/
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/server.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/server.nix
new file mode 100644
index 000000000000..44430ef62e2d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/teamspeak/server.nix
@@ -0,0 +1,100 @@
+{ lib, stdenv, fetchurl, postgresql, autoPatchelfHook, writeScript }:
+
+let
+  arch = if stdenv.is64bit then "amd64" else "x86";
+in stdenv.mkDerivation rec {
+  pname = "teamspeak-server";
+  version = "3.13.6";
+
+  src = fetchurl {
+    url = "https://files.teamspeak-services.com/releases/server/${version}/teamspeak3-server_linux_${arch}-${version}.tar.bz2";
+    sha256 = if stdenv.is64bit
+      then "sha256-U3BNJ4Jjhd39gD7iMsHT8CGtm/GFQDE2kYQa2btyK+w="
+      else "sha256-8UKiFedv6w5bmqNvo3AXwQnUROwbZnU0ZTh9V17zmxQ=";
+  };
+
+  buildInputs = [ stdenv.cc.cc postgresql.lib ];
+
+  nativeBuildInputs = [ autoPatchelfHook ];
+
+  installPhase = ''
+    runHook preInstall
+
+    # Install files.
+    mkdir -p $out/lib/teamspeak
+    mv * $out/lib/teamspeak/
+
+    # Make symlinks to the binaries from bin.
+    mkdir -p $out/bin/
+    ln -s $out/lib/teamspeak/ts3server $out/bin/ts3server
+    ln -s $out/lib/teamspeak/tsdns/tsdnsserver $out/bin/tsdnsserver
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = writeScript "update-teampeak-server" ''
+    #!/usr/bin/env nix-shell
+    #!nix-shell -i bash -p common-updater-scripts curl gnugrep gnused jq pup
+
+    set -eu -o pipefail
+
+    version=$( \
+      curl https://www.teamspeak.com/en/downloads/ \
+        | pup "#server .linux .version json{}" \
+        | jq -r ".[0].text"
+    )
+
+    versionOld=$(nix-instantiate --eval --strict -A "teamspeak_server.version")
+
+    nixFile=pkgs/applications/networking/instant-messengers/teamspeak/server.nix
+
+    update-source-version teamspeak_server "$version" --system=i686-linux
+
+    sed -i -e "s/version = \"$version\";/version = $versionOld;/" "$nixFile"
+
+    update-source-version teamspeak_server "$version" --system=x86_64-linux
+  '';
+
+  meta = with lib; {
+    description = "TeamSpeak voice communication server";
+    homepage = "https://teamspeak.com/";
+    license = licenses.unfreeRedistributable;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ arobyn gerschtli ];
+  };
+}
+
+/*
+License issues:
+Date: Mon, 10 Dec 2007 19:55:16 -0500
+From: TeamSpeak Sales <sales@tritoncia.com>
+To: 'Marc Weber' <marco-oweber@gmx.de>
+Subject: RE: teamspeak on nix?
+
+Yes, that would be fine.  As long as you are not renting servers or selling
+TeamSpeak then you are more than welcome to distribute it.
+
+Thank you,
+
+TeamSpeak Sales Team
+________________________________
+e-Mail: sales@tritoncia.com
+TeamSpeak: http://www.TeamSpeak.com
+Account Login: https://sales.TritonCIA.com/users
+
+
+
+-----Original Message-----
+From: Marc Weber [mailto:marco-oweber@gmx.de]
+Sent: Monday, December 10, 2007 5:03 PM
+To: sales@tritoncia.com
+Subject: teamspeak on nix?
+
+Hello,
+
+nix is very young software distribution system (http://nix.cs.uu.nl/)
+I'd like to ask wether you permit us to add teamspeak (server/ client?)
+
+Sincerly
+Marc Weber (small nix contributor)
+*/
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
new file mode 100644
index 000000000000..d9f9cd91a52d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
@@ -0,0 +1,74 @@
+{ mkDerivation, lib, fetchFromGitHub, callPackage
+, pkg-config, cmake, ninja, python3, wrapGAppsHook, wrapQtAppsHook
+, qtbase, qtimageformats, gtk3, libsForQt5, lz4, xxHash
+, ffmpeg, openalSoft, minizip, libopus, alsa-lib, libpulseaudio, range-v3
+, tl-expected, hunspell, glibmm, webkitgtk
+# Transitive dependencies:
+, pcre, xorg, util-linux, libselinux, libsepol, epoxy
+, at-spi2-core, libXtst, libthai, libdatrie
+}:
+
+with lib;
+
+let
+  tg_owt = callPackage ./tg_owt.nix {};
+in mkDerivation rec {
+  pname = "kotatogram-desktop";
+  version = "1.4.1";
+
+  src = fetchFromGitHub {
+    owner = "kotatogram";
+    repo = "kotatogram-desktop";
+    rev = "k${version}";
+    sha256 = "07z56gz3sk45n5j0gw9p9mxrbwixxsmp7lvqc6lqnxmglz6knc1d";
+    fetchSubmodules = true;
+  };
+
+  postPatch = ''
+    substituteInPlace Telegram/CMakeLists.txt \
+      --replace '"''${TDESKTOP_LAUNCHER_BASENAME}.appdata.xml"' '"''${TDESKTOP_LAUNCHER_BASENAME}.metainfo.xml"'
+  '';
+
+  # We want to run wrapProgram manually (with additional parameters)
+  dontWrapGApps = true;
+  dontWrapQtApps = true;
+
+  nativeBuildInputs = [ pkg-config cmake ninja python3 wrapGAppsHook wrapQtAppsHook ];
+
+  buildInputs = [
+    qtbase qtimageformats gtk3 libsForQt5.kwayland libsForQt5.libdbusmenu lz4 xxHash
+    ffmpeg openalSoft minizip libopus alsa-lib libpulseaudio range-v3
+    tl-expected hunspell glibmm webkitgtk
+    tg_owt
+    # Transitive dependencies:
+    pcre xorg.libXdmcp util-linux libselinux libsepol epoxy
+    at-spi2-core libXtst libthai libdatrie
+  ];
+
+  cmakeFlags = [ "-DTDESKTOP_API_TEST=ON" ];
+
+  postFixup = ''
+    # We also use gappsWrapperArgs from wrapGAppsHook.
+    wrapProgram $out/bin/kotatogram-desktop \
+      "''${gappsWrapperArgs[@]}" \
+      "''${qtWrapperArgs[@]}"
+  '';
+
+  passthru = {
+    inherit tg_owt;
+  };
+
+  meta = {
+    description = "Kotatogram – experimental Telegram Desktop fork";
+    longDescription = ''
+      Unofficial desktop client for the Telegram messenger, based on Telegram Desktop.
+
+      It contains some useful (or purely cosmetic) features, but they could be unstable. A detailed list is available here: https://kotatogram.github.io/changes
+    '';
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    homepage = "https://kotatogram.github.io";
+    changelog = "https://github.com/kotatogram/kotatogram-desktop/releases/tag/k{ver}";
+    maintainers = with maintainers; [ ilya-fedin ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
new file mode 100644
index 000000000000..614183b72d08
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, cmake, ninja, yasm
+, libjpeg, openssl, libopus, ffmpeg, alsa-lib, libpulseaudio, protobuf
+, xorg, libXtst
+}:
+
+let
+  rev = "2d804d2c9c5d05324c8ab22f2e6ff8306521b3c3";
+  sha256 = "0kz0i381iwsgcc3yzsq7njx3gkqja4bb9fsgc24vhg0md540qhyn";
+
+in stdenv.mkDerivation {
+  pname = "tg_owt";
+  version = "git-${rev}";
+
+  src = fetchFromGitHub {
+    owner = "desktop-app";
+    repo = "tg_owt";
+    inherit rev sha256;
+    fetchSubmodules = true;
+  };
+
+  outputs = [ "out" "dev" ];
+
+  nativeBuildInputs = [ pkg-config cmake ninja yasm ];
+
+  buildInputs = [
+    libjpeg openssl libopus ffmpeg alsa-lib libpulseaudio protobuf
+    xorg.libX11 libXtst
+  ];
+
+  cmakeFlags = [
+    # Building as a shared library isn't officially supported and currently broken:
+    "-DBUILD_SHARED_LIBS=OFF"
+  ];
+
+  meta.license = lib.licenses.bsd3;
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
new file mode 100644
index 000000000000..7f97e20a85e3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
@@ -0,0 +1,177 @@
+{ mkDerivation
+, lib
+, fetchFromGitHub
+, callPackage
+, pkg-config
+, cmake
+, ninja
+, python3
+, wrapGAppsHook
+, wrapQtAppsHook
+, extra-cmake-modules
+, qtbase
+, qtimageformats
+, gtk3
+, kwayland
+, libdbusmenu
+, lz4
+, xxHash
+, ffmpeg
+, openalSoft
+, minizip
+, libopus
+, alsa-lib
+, libpulseaudio
+, range-v3
+, tl-expected
+, hunspell
+, glibmm
+, webkitgtk
+, jemalloc
+, rnnoise
+  # Transitive dependencies:
+, util-linuxMinimal
+, pcre
+, libpthreadstubs
+, libXdmcp
+, libselinux
+, libsepol
+, epoxy
+, at-spi2-core
+, libXtst
+, libthai
+, libdatrie
+, xdg-utils
+, libsysprof-capture
+, libpsl
+, brotli
+}:
+
+# Main reference:
+# - This package was originally based on the Arch package but all patches are now upstreamed:
+#   https://git.archlinux.org/svntogit/community.git/tree/trunk/PKGBUILD?h=packages/telegram-desktop
+# Other references that could be useful:
+# - https://git.alpinelinux.org/aports/tree/testing/telegram-desktop/APKBUILD
+# - https://github.com/void-linux/void-packages/blob/master/srcpkgs/telegram-desktop/template
+
+let
+  tg_owt = callPackage ./tg_owt.nix { };
+in
+mkDerivation rec {
+  pname = "telegram-desktop";
+  version = "2.9.3";
+  # Note: Update via pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py
+
+  # Telegram-Desktop with submodules
+  src = fetchFromGitHub {
+    owner = "telegramdesktop";
+    repo = "tdesktop";
+    rev = "v${version}";
+    fetchSubmodules = true;
+    sha256 = "sha256-ZmhgBL5nbgrNLRmCHocqVNC3KtaLm4LUY1f4Xl8CvB4=";
+  };
+
+  postPatch = ''
+    substituteInPlace Telegram/CMakeLists.txt \
+      --replace '"''${TDESKTOP_LAUNCHER_BASENAME}.appdata.xml"' '"''${TDESKTOP_LAUNCHER_BASENAME}.metainfo.xml"'
+
+    substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioInputALSA.cpp \
+      --replace '"libasound.so.2"' '"${alsa-lib}/lib/libasound.so.2"'
+    substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioOutputALSA.cpp \
+      --replace '"libasound.so.2"' '"${alsa-lib}/lib/libasound.so.2"'
+    substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioPulse.cpp \
+      --replace '"libpulse.so.0"' '"${libpulseaudio}/lib/libpulse.so.0"'
+  '';
+
+  # We want to run wrapProgram manually (with additional parameters)
+  dontWrapGApps = true;
+  dontWrapQtApps = true;
+
+  nativeBuildInputs = [
+    pkg-config
+    cmake
+    ninja
+    python3
+    wrapGAppsHook
+    wrapQtAppsHook
+    extra-cmake-modules
+  ];
+
+  buildInputs = [
+    qtbase
+    qtimageformats
+    gtk3
+    kwayland
+    libdbusmenu
+    lz4
+    xxHash
+    ffmpeg
+    openalSoft
+    minizip
+    libopus
+    alsa-lib
+    libpulseaudio
+    range-v3
+    tl-expected
+    hunspell
+    glibmm
+    webkitgtk
+    jemalloc
+    rnnoise
+    tg_owt
+    # Transitive dependencies:
+    util-linuxMinimal # Required for libmount thus not nativeBuildInputs.
+    pcre
+    libpthreadstubs
+    libXdmcp
+    libselinux
+    libsepol
+    epoxy
+    at-spi2-core
+    libXtst
+    libthai
+    libdatrie
+    libsysprof-capture
+    libpsl
+    brotli
+  ];
+
+  cmakeFlags = [
+    "-Ddisable_autoupdate=ON"
+    # We're allowed to used the API ID of the Snap package:
+    "-DTDESKTOP_API_ID=611335"
+    "-DTDESKTOP_API_HASH=d524b414d21f4d37f08684c1df41ac9c"
+    # See: https://github.com/NixOS/nixpkgs/pull/130827#issuecomment-885212649
+    "-DDESKTOP_APP_USE_PACKAGED_FONTS=OFF"
+  ];
+
+  postFixup = ''
+    # This is necessary to run Telegram in a pure environment.
+    # We also use gappsWrapperArgs from wrapGAppsHook.
+    wrapProgram $out/bin/telegram-desktop \
+      "''${gappsWrapperArgs[@]}" \
+      "''${qtWrapperArgs[@]}" \
+      --prefix PATH : ${lib.makeBinPath [ xdg-utils]} \
+      --set XDG_RUNTIME_DIR "XDG-RUNTIME-DIR"
+    sed -i $out/bin/telegram-desktop \
+      -e "s,'XDG-RUNTIME-DIR',\"\''${XDG_RUNTIME_DIR:-/run/user/\$(id --user)}\","
+  '';
+
+  passthru = {
+    inherit tg_owt;
+    updateScript = ./update.py;
+  };
+
+  meta = with lib; {
+    description = "Telegram Desktop messaging app";
+    longDescription = ''
+      Desktop client for the Telegram messenger, based on the Telegram API and
+      the MTProto secure protocol.
+    '';
+    license = licenses.gpl3Only;
+    platforms = platforms.linux;
+    homepage = "https://desktop.telegram.org/";
+    changelog = "https://github.com/telegramdesktop/tdesktop/releases/tag/v${version}";
+    maintainers = with maintainers; [ oxalica primeos ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/tg_owt.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/tg_owt.nix
new file mode 100644
index 000000000000..e553c95990e5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/tg_owt.nix
@@ -0,0 +1,46 @@
+{ lib, stdenv, fetchFromGitHub
+, pkg-config, cmake, ninja, yasm
+, libjpeg, openssl, libopus, ffmpeg, alsa-lib, libpulseaudio, protobuf
+, openh264, usrsctp, libevent, libvpx
+, libX11, libXtst, libXcomposite, libXdamage, libXext, libXrender, libXrandr, libXi
+, glib, abseil-cpp, pcre, util-linuxMinimal, libselinux, libsepol, pipewire
+}:
+
+stdenv.mkDerivation {
+  pname = "tg_owt";
+  version = "unstable-2021-06-27";
+
+  src = fetchFromGitHub {
+    owner = "desktop-app";
+    repo = "tg_owt";
+    rev = "91d836dc84a16584c6ac52b36c04c0de504d9c34";
+    sha256 = "1ir4svv5mijpzr0rmx65088iikck83vhcdqrpf9dnk6yp4j9v4v2";
+    fetchSubmodules = true;
+  };
+
+  outputs = [ "out" "dev" ];
+
+  nativeBuildInputs = [ pkg-config cmake ninja yasm ];
+
+  buildInputs = [
+    libjpeg openssl libopus ffmpeg alsa-lib libpulseaudio protobuf
+    openh264 usrsctp libevent libvpx
+    libX11 libXtst libXcomposite libXdamage libXext libXrender libXrandr libXi
+    glib abseil-cpp pcre util-linuxMinimal libselinux libsepol pipewire
+  ];
+
+  cmakeFlags = [
+    # Building as a shared library isn't officially supported and may break at any time.
+    "-DBUILD_SHARED_LIBS=OFF"
+  ];
+
+  propagatedBuildInputs = [
+    # Required for linking downstream binaries.
+    abseil-cpp openh264 usrsctp libevent libvpx
+  ];
+
+  meta = with lib; {
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ oxalica ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py
new file mode 100755
index 000000000000..89e40218623b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py
@@ -0,0 +1,73 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i python3 -p python3 nix nix-prefetch-git
+
+import fileinput
+import json
+import os
+import re
+import subprocess
+
+from datetime import datetime
+from urllib.request import urlopen, Request
+
+
+DIR = os.path.dirname(os.path.abspath(__file__))
+HEADERS = {'Accept': 'application/vnd.github.v3+json'}
+
+
+def github_api_request(endpoint):
+    base_url = 'https://api.github.com/'
+    request = Request(base_url + endpoint, headers=HEADERS)
+    with urlopen(request) as http_response:
+        return json.loads(http_response.read().decode('utf-8'))
+
+
+def get_commit_date(repo, sha):
+    url = f'https://api.github.com/repos/{repo}/commits/{sha}'
+    request = Request(url, headers=HEADERS)
+    with urlopen(request) as http_response:
+        commit = json.loads(http_response.read().decode())
+        date = commit['commit']['committer']['date'].rstrip('Z')
+        date = datetime.fromisoformat(date).date().isoformat()
+        return 'unstable-' + date
+
+
+def nix_prefetch_git(url, rev):
+    """Prefetches the requested Git revision (incl. submodules) of the given repository URL."""
+    print(f'nix-prefetch-git {url} {rev}')
+    out = subprocess.check_output(['nix-prefetch-git', '--quiet', '--url', url, '--rev', rev, '--fetch-submodules'])
+    return json.loads(out)['sha256']
+
+
+def nix_prefetch_url(url, unpack=False):
+    """Prefetches the content of the given URL."""
+    print(f'nix-prefetch-url {url}')
+    options = ['--type', 'sha256']
+    if unpack:
+        options += ['--unpack']
+    out = subprocess.check_output(['nix-prefetch-url'] + options + [url])
+    return out.decode('utf-8').rstrip()
+
+
+def update_file(relpath, version, sha256, rev=None):
+    file_path = os.path.join(DIR, relpath)
+    with fileinput.FileInput(file_path, inplace=True) as f:
+        for line in f:
+            result = line
+            result = re.sub(r'^  version = ".+";', f'  version = "{version}";', result)
+            result = re.sub(r'^    sha256 = ".+";', f'    sha256 = "{sha256}";', result)
+            if rev:
+                result = re.sub(r'^    rev = ".*";', f'    rev = "{rev}";', result)
+            print(result, end='')
+
+
+if __name__ == "__main__":
+    tdesktop_tag = github_api_request('repos/telegramdesktop/tdesktop/releases/latest')['tag_name']
+    tdesktop_version = tdesktop_tag.lstrip('v')
+    tdesktop_hash = nix_prefetch_git('https://github.com/telegramdesktop/tdesktop.git', tdesktop_tag)
+    update_file('default.nix', tdesktop_version, tdesktop_hash)
+    tg_owt_ref = github_api_request('repos/desktop-app/tg_owt/commits/master')['sha']
+    tg_owt_version = get_commit_date('desktop-app/tg_owt', tg_owt_ref)
+    tg_owt_hash = nix_prefetch_git('https://github.com/desktop-app/tg_owt.git', tg_owt_ref)
+    update_file('tg_owt.nix', tg_owt_version, tg_owt_hash, tg_owt_ref)
+    tg_owt_ref = github_api_request('repos/desktop-app/tg_owt/commits/master')['sha']
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/telegram-cli/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/telegram-cli/default.nix
new file mode 100644
index 000000000000..bff3d3769a7a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telegram/telegram-cli/default.nix
@@ -0,0 +1,49 @@
+{ stdenv, fetchFromGitHub, jansson, lib, libconfig, libevent, libgcrypt, lua, lua53Packages
+, makeWrapper, openssl, pkg-config, python3, readline, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "telegram-cli";
+  version = "20200106";
+
+  src = fetchFromGitHub {
+    owner = "kenorb-contrib";
+    repo = "tg";
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-wYBPr2b8IOycO9y/CNyGjnRsyGyYl3oiXYtTzwTurVA=";
+    fetchSubmodules = true;
+  };
+
+  buildInputs = [
+    jansson
+    libconfig
+    libevent
+    libgcrypt
+    lua
+    lua53Packages.lgi
+    openssl
+    python3
+    readline
+    zlib
+  ];
+  nativeBuildInputs = [
+    pkg-config
+    makeWrapper
+  ];
+
+  installPhase = ''
+    runHook preInstall
+    install -Dm755 ./bin/telegram-cli $out/bin/telegram-cli-keyless
+    install -Dm644 ./tg-server.pub -t $out/share/telegram-cli
+    makeWrapper $out/bin/telegram-cli-keyless $out/bin/telegram-cli \
+      --add-flags "-k $out/share/telegram-cli/tg-server.pub"
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Command-line interface for Telegram, that uses readline interface, it's a client implementation of TGL library";
+    downloadPage = "https://github.com/kenorb-contrib/tg";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ superherointj ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/gabble/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/gabble/default.nix
new file mode 100644
index 000000000000..3b1775a7ba8c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/gabble/default.nix
@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchurl, pkg-config, libxslt, telepathy-glib, python2, libxml2, dbus-glib, dbus
+, sqlite, libsoup, libnice, gnutls}:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-gabble";
+  version = "0.18.4";
+
+  src = fetchurl {
+    url = "https://telepathy.freedesktop.org/releases/telepathy-gabble/telepathy-gabble-${version}.tar.gz";
+    sha256 = "174nlkqm055vrhv11gy73m20jbsggcb0ddi51c7s9m3j5ibr2p0i";
+  };
+
+  nativeBuildInputs = [ pkg-config libxslt ];
+  buildInputs = [ libxml2 dbus-glib sqlite libsoup libnice telepathy-glib gnutls python2 ];
+
+  checkInputs = [ dbus.daemon ];
+
+  configureFlags = [ "--with-ca-certificates=/etc/ssl/certs/ca-certificates.crt" ];
+
+  enableParallelBuilding = true;
+  doCheck = true;
+
+  meta = with lib; {
+    homepage = "https://telepathy.freedesktop.org/components/telepathy-gabble/";
+    description = "Jabber/XMPP connection manager for the Telepathy framework";
+    license = licenses.lgpl21Plus;
+    platforms = lib.platforms.gnu ++ lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/haze/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/haze/default.nix
new file mode 100644
index 000000000000..27df1273c083
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/haze/default.nix
@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchurl, fetchpatch, pidgin, telepathy-glib, python2, glib, dbus-glib, pkg-config, libxslt }:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-haze";
+  version = "0.8.0";
+
+  src = fetchurl {
+    url = "https://telepathy.freedesktop.org/releases/telepathy-haze/telepathy-haze${version}.tar.gz";
+    sha256 = "1jgrp32p6rllj089ynbsk3n9xrvsvzmwzhf0ql05kkgj0nf08xiy";
+  };
+
+  buildInputs = [ glib telepathy-glib dbus-glib pidgin python2 ];
+
+  nativeBuildInputs = [ pkg-config libxslt ];
+
+  patches = [
+    # Patch from Gentoo that helps telepathy-haze build with more
+    # recent versions of pidgin.
+    (fetchpatch {
+      url = "https://raw.githubusercontent.com/gentoo/gentoo/master/net-voip/telepathy-haze/files/telepathy-haze-0.8.0-pidgin-2.10.12-compat.patch";
+      sha256 = "0fa1p4n1559qd096w7ya4kvfnc1c98ykarkxzlpkwvzbczwzng3c";
+    })
+  ];
+
+  meta = {
+    description = "A Telepathy connection manager based on libpurple";
+    platforms = lib.platforms.gnu ++ lib.platforms.linux; # Random choice
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/idle/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/idle/default.nix
new file mode 100644
index 000000000000..fe7ef49cd0d3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/idle/default.nix
@@ -0,0 +1,25 @@
+{ lib, stdenv, fetchurl, glib, dconf, pkg-config, dbus-glib, telepathy-glib, python2, libxslt, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-idle";
+  version = "0.2.0";
+
+  src = fetchurl {
+    url = "http://telepathy.freedesktop.org/releases/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "1argdzbif1vdmwp5vqbgkadq9ancjmgdm2ncp0qfckni715ss4rh";
+  };
+
+  nativeBuildInputs = [ pkg-config makeWrapper ];
+  buildInputs = [ glib telepathy-glib dbus-glib libxslt python2 (lib.getLib dconf) ];
+
+  preFixup = ''
+    wrapProgram "$out/libexec/telepathy-idle" \
+      --prefix GIO_EXTRA_MODULES : "${lib.getLib dconf}/lib/gio/modules"
+  '';
+
+  meta = {
+    description = "IRC connection manager for the Telepathy framework";
+    license = lib.licenses.lgpl21;
+    platforms = lib.platforms.gnu ++ lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix
new file mode 100644
index 000000000000..ad7a588d9cea
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix
@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchurl, dbus-glib, libxml2, sqlite, telepathy-glib, python2, pkg-config
+, dconf, makeWrapper, intltool, libxslt, gobject-introspection, dbus }:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-logger";
+  version = "0.8.2";
+
+  src = fetchurl {
+    url = "https://telepathy.freedesktop.org/releases/telepathy-logger/telepathy-logger-${version}.tar.bz2";
+    sha256 = "1bjx85k7jyfi5pvl765fzc7q2iz9va51anrc2djv7caksqsdbjlg";
+  };
+
+  nativeBuildInputs = [
+    makeWrapper pkg-config intltool libxslt gobject-introspection
+  ];
+  buildInputs = [
+    dbus-glib libxml2 sqlite telepathy-glib
+    dbus python2
+  ];
+
+  configureFlags = [ "--enable-call" ];
+
+  preFixup = ''
+    wrapProgram "$out/libexec/telepathy-logger" \
+      --prefix GIO_EXTRA_MODULES : "${lib.getLib dconf}/lib/gio/modules" \
+      --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
+  '';
+
+  meta = with lib; {
+    description = "Logger service for Telepathy framework";
+    homepage = "https://telepathy.freedesktop.org/components/telepathy-logger/";
+    license = licenses.lgpl21;
+    maintainers = with maintainers; [ jtojnar ];
+    platforms = platforms.gnu ++ platforms.linux; # Arbitrary choice
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix
new file mode 100644
index 000000000000..8464619f1e73
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix
@@ -0,0 +1,53 @@
+{ lib, stdenv
+, fetchurl
+, pkg-config
+, dconf
+, telepathy-glib
+, python3
+, libxslt
+, makeWrapper
+}:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-mission-control";
+  version = "5.16.6";
+
+  outputs = [ "out" "lib" "dev" ];
+
+  src = fetchurl {
+    url = "https://telepathy.freedesktop.org/releases/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "0ibs575pfr0wmhfcw6ln6iz7gw2y45l3bah11rksf6g9jlwsxy1d";
+  };
+
+  buildInputs = [
+    python3
+  ]; # ToDo: optional stuff missing
+
+  nativeBuildInputs = [
+    pkg-config
+    libxslt
+    makeWrapper
+  ];
+
+  propagatedBuildInputs = [
+    telepathy-glib
+  ];
+
+  doCheck = true;
+
+  enableParallelBuilding = true;
+
+  preFixup = ''
+    wrapProgram "$lib/libexec/mission-control-5" \
+      --prefix GIO_EXTRA_MODULES : "${lib.getLib dconf}/lib/gio/modules" \
+      --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
+  '';
+
+  meta = with lib; {
+    description = "An account manager and channel dispatcher for the Telepathy framework";
+    homepage = "https://telepathy.freedesktop.org/components/telepathy-mission-control/";
+    license = licenses.lgpl21Only;
+    maintainers = with maintainers; [ jtojnar ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/salut/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/salut/default.nix
new file mode 100644
index 000000000000..882fae1c3b5f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/telepathy/salut/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchurl, libxslt, glib, libxml2, telepathy-glib, python2, avahi, libsoup
+, libuuid, openssl, pcre, sqlite, pkg-config }:
+
+stdenv.mkDerivation rec {
+  pname = "telepathy-salut";
+  version = "0.8.1";
+
+  src = fetchurl {
+    url = "https://telepathy.freedesktop.org/releases/telepathy-salut/telepathy-salut-${version}.tar.gz";
+    sha256 = "13k112vrr3zghzr03pnbqc1id65qvpj0sn0virlbf4dmr2511fbh";
+  };
+
+  # pcre needed because https://github.com/NixOS/nixpkgs/pull/15046
+  buildInputs = [ glib libxml2 telepathy-glib avahi libsoup libuuid openssl
+    sqlite pcre python2 ];
+
+  nativeBuildInputs = [ libxslt pkg-config ];
+
+  configureFlags = [ "--disable-avahi-tests" ];
+
+  meta = with lib; {
+    description = "Link-local XMPP connection manager for Telepathy";
+    platforms = platforms.gnu ++ platforms.linux; # Random choice
+    maintainers = [ ];
+    broken = true;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/tensor/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/tensor/default.nix
new file mode 100644
index 000000000000..172d11f6b857
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/tensor/default.nix
@@ -0,0 +1,62 @@
+{ mkDerivation, lib, stdenv, fetchgit, qtbase, qtquickcontrols, qmake
+, makeDesktopItem }:
+
+# we now have libqmatrixclient so a future version of tensor that supports it
+# should use that
+
+mkDerivation rec {
+  pname = "tensor-git";
+  version = "2017-02-21";
+
+  src = fetchgit {
+    url             = "https://github.com/davidar/tensor.git";
+    rev             = "f3f3056d770d7fb4a21c610cee7936ee900569f5";
+    sha256          = "19in8c7a2hxsx2c4lj540w5c3pn1882645m21l91mcriynqr67k9";
+    fetchSubmodules = true;
+  };
+
+  buildInputs = [ qtbase qtquickcontrols ];
+  nativeBuildInputs = [ qmake ];
+
+  desktopItem = makeDesktopItem {
+    name        = "tensor";
+    exec        = "@bin@";
+    icon        = "tensor.png";
+    comment     = meta.description;
+    desktopName = "Tensor Matrix Client";
+    genericName = meta.description;
+    categories  = "Chat;Utility";
+    mimeType    = "application/x-chat";
+  };
+
+  installPhase = if stdenv.isDarwin then ''
+    runHook preInstall
+
+    mkdir -p $out/Applications
+    cp -r tensor.app $out/Applications/tensor.app
+    wrapQtApp $out/Applications/tensor.app/Contents/MacOS/tensor
+
+    runHook postInstall
+  '' else ''
+    runHook preInstall
+
+    install -Dm755 tensor $out/bin/tensor
+    install -Dm644 client/logo.png \
+                   $out/share/icons/hicolor/512x512/apps/tensor.png
+    install -Dm644 ${desktopItem}/share/applications/tensor.desktop \
+                   $out/share/applications/tensor.desktop
+
+    substituteInPlace $out/share/applications/tensor.desktop \
+      --subst-var-by bin $out/bin/tensor
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://matrix.org/docs/projects/client/tensor.html";
+    description = "Cross-platform Qt5/QML-based Matrix client";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ peterhoeg ];
+    inherit (qtbase.meta) platforms;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/torchat/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/torchat/default.nix
new file mode 100644
index 000000000000..4a1ffef292f0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/torchat/default.nix
@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchFromGitHub, python, unzip, wxPython, wrapPython, tor }:
+
+stdenv.mkDerivation rec {
+  pname = "torchat";
+  version = "0.9.9.553";
+
+  src = fetchFromGitHub {
+    owner = "prof7bit";
+    repo = "TorChat";
+    rev = version;
+    sha256 = "2LHG9qxZDo5rV6wsputdRo2Y1aHs+irMwt1ucFnXQE0=";
+  };
+
+  nativeBuildInputs = [ unzip ];
+  buildInputs = [ python wxPython wrapPython ];
+  pythonPath = [ wxPython ];
+
+  preConfigure = "cd torchat/src; rm portable.txt";
+
+  installPhase = ''
+    substituteInPlace "Tor/tor.sh" --replace "tor -f" "${tor}/bin/tor -f"
+
+    wrapPythonPrograms
+
+    mkdir -p $out/lib/torchat
+    cp -rf * $out/lib/torchat
+    makeWrapper ${python}/bin/python $out/bin/torchat \
+        --set PYTHONPATH $out/lib/torchat:$program_PYTHONPATH \
+        --run "cd $out/lib/torchat" \
+        --add-flags "-O $out/lib/torchat/torchat.py"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/prof7bit/TorChat";
+    description = "Instant messaging application on top of the Tor network and it's location hidden services";
+    license = licenses.gpl3;
+    maintainers = [ maintainers.phreedom ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/toxic/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/toxic/default.nix
new file mode 100644
index 000000000000..fc6c78a4f673
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/toxic/default.nix
@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, libsodium, ncurses, curl
+, libtoxcore, openal, libvpx, freealut, libconfig, pkg-config, libopus
+, qrencode, gdk-pixbuf, libnotify }:
+
+stdenv.mkDerivation rec {
+  pname = "toxic";
+  version = "0.10.1";
+
+  src = fetchFromGitHub {
+    owner  = "Tox";
+    repo   = "toxic";
+    rev    = "v${version}";
+    sha256 = "sha256-EElDi/VEYgYPpoDNatxcKQC1pnCU8kOcj0bAFojD9fU=";
+  };
+
+  makeFlags = [ "PREFIX=$(out)"];
+  installFlags = [ "PREFIX=$(out)"];
+
+  buildInputs = [
+    libtoxcore libsodium ncurses curl gdk-pixbuf libnotify
+  ] ++ lib.optionals (!stdenv.isAarch32) [
+    openal libopus libvpx freealut qrencode
+  ];
+  nativeBuildInputs = [ pkg-config libconfig ];
+
+  meta = with lib; {
+    description = "Reference CLI for Tox";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/turses/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/turses/default.nix
new file mode 100644
index 000000000000..256e026a060e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/turses/default.nix
@@ -0,0 +1,54 @@
+{ lib, fetchpatch, python3Packages }:
+
+with lib;
+with python3Packages;
+
+buildPythonPackage rec {
+  pname = "turses";
+  version = "0.3.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "15mkhm3b5ka42h8qph0mhh8izfc1200v7651c62k7ldcs50ib9j6";
+  };
+
+  checkInputs = [ mock pytest coverage tox ];
+  propagatedBuildInputs = [ urwid tweepy future ];
+
+  LC_ALL = "en_US.UTF-8";
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/louipc/turses/commit/be0961b51f502d49fd9e2e5253ac130e543a31c7.patch";
+      sha256 = "17s1n0275mcj03vkf3n39dmc09niwv4y7ssrfk7k3vqx22kppzg3";
+    })
+    # python 3.7+ support
+    (fetchpatch {
+      url = "https://github.com/booxter/turses/commit/e6e285eae50fc3d2042a476185fe60daef1e758e.patch";
+      sha256 = "0g2zsrny955viwgs2l6gpiiz8m67b5sgdcxkjmfimfvvih5sg79f";
+    })
+  ];
+
+  checkPhase = ''
+    TMP_TURSES=`echo turses-$RANDOM`
+    mkdir $TMP_TURSES
+    PYTHONPATH=tests:$PYTHONPATH HOME=$TMP_TURSES py.test tests/
+    rm -rf $TMP_TURSES
+  '';
+
+  postPatch = ''
+    sed -i -e 's|urwid==1.3.0|urwid==${getVersion urwid}|' setup.py
+    sed -i -e "s|future==0.14.3|future==${getVersion future}|" setup.py
+    sed -i -e "s|tweepy==3.3.0|tweepy==${getVersion tweepy}|" setup.py
+    sed -i -e "s|config.generate_config_file.assert_called_once()|assert config.generate_config_file.call_count == 1|" tests/test_config.py
+    sed -i -e "s|self.observer.update.assert_called_once()|assert self.observer.update.call_count == 1|" tests/test_meta.py
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/louipc/turses";
+    description = "A Twitter client for the console";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/twinkle/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/twinkle/default.nix
new file mode 100644
index 000000000000..01c83ba7b1cc
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/twinkle/default.nix
@@ -0,0 +1,84 @@
+{ lib
+, fetchFromGitHub
+, cmake
+, libxml2
+, libsndfile
+, file
+, readline
+, bison
+, flex
+, ucommon
+, ccrtp
+, qtbase
+, qttools
+, qtquickcontrols2
+, alsa-lib
+, speex
+, ilbc
+, fetchurl
+, mkDerivation
+, bcg729
+}:
+
+mkDerivation rec {
+  pname = "twinkle";
+  version = "1.10.2";
+
+  src = fetchFromGitHub {
+    repo = pname;
+    owner = "LubosD";
+    rev = "v${version}";
+    sha256 = "0s0gi03xwvzp02ah4q6j33r9jx9nbayr6dxlg2ck9pwbay1nq1hx";
+  };
+
+  buildInputs = [
+    libxml2
+    file # libmagic
+    libsndfile
+    readline
+    ucommon
+    ccrtp
+    qtbase
+    qttools
+    qtquickcontrols2
+    alsa-lib
+    speex
+    ilbc
+  ];
+
+  patches = [
+    # patch for bcg729 1.0.2+
+    (fetchurl { # https://github.com/LubosD/twinkle/pull/152
+      url = "https://github.com/LubosD/twinkle/compare/05082ae12051821b1d969e6672d9e4e5afe1bc07...7a6c533cda387652b5b4cb2a867be1a18585890c.patch";
+      sha256 = "39fc6cef3e88cfca8db44612b2d082fb618027b0f99509138d3c0d2777a494c2";
+    })
+    # patch manual link to not link to old url, which now points to NSFW page
+    (fetchurl { # https://github.com/LubosD/twinkle/commit/05082ae12051821b1d969e6672d9e4e5afe1bc07
+      url = "https://github.com/LubosD/twinkle/commit/05082ae12051821b1d969e6672d9e4e5afe1bc07.diff";
+      sha256 = "1iamragr9wp2vczsnp6n261fpr1ai2nc2abp0228jlar9zafksw0";
+    })
+  ];
+
+  nativeBuildInputs = [
+    cmake
+    bison
+    flex
+    bcg729
+  ];
+
+  cmakeFlags = [
+    "-DWITH_G729=On"
+    "-DWITH_SPEEX=On"
+    "-DWITH_ILBC=On"
+    /* "-DWITH_DIAMONDCARD=On" seems ancient and broken */
+  ];
+
+  meta = with lib; {
+    changelog = "https://github.com/LubosD/twinkle/blob/${version}/NEWS";
+    description = "A SIP-based VoIP client";
+    homepage = "http://twinkle.dolezel.info/";
+    license = licenses.gpl2Plus;
+    maintainers = [ maintainers.mkg20001 ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/utox/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/utox/default.nix
new file mode 100644
index 000000000000..e5a2c201d873
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/utox/default.nix
@@ -0,0 +1,43 @@
+{ lib, stdenv, fetchFromGitHub, check, cmake, pkg-config
+, libtoxcore, filter-audio, dbus, libvpx, libX11, openal, freetype, libv4l
+, libXrender, fontconfig, libXext, libXft, libsodium, libopus }:
+
+stdenv.mkDerivation rec {
+  pname = "utox";
+
+  version = "0.17.0";
+
+  src = fetchFromGitHub {
+    owner  = "uTox";
+    repo   = "uTox";
+    rev    = "v${version}";
+    sha256 = "12wbq883il7ikldayh8hm0cjfrkp45vn05xx9s1jbfz6gmkidyar";
+    fetchSubmodules = true;
+  };
+
+  buildInputs = [
+    libtoxcore dbus libvpx libX11 openal freetype
+    libv4l libXrender fontconfig libXext libXft filter-audio
+    libsodium libopus
+  ];
+
+  nativeBuildInputs = [
+    cmake pkg-config
+  ];
+
+  cmakeFlags = [
+    "-DENABLE_AUTOUPDATE=OFF"
+    "-DENABLE_TESTS=${if doCheck then "ON" else "OFF"}"
+  ];
+
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+  checkInputs = [ check ];
+
+  meta = with lib; {
+    description = "Lightweight Tox client";
+    homepage = "https://github.com/uTox/uTox";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.all;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/vacuum/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/vacuum/default.nix
new file mode 100644
index 000000000000..0fc7e8b6d8ee
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/vacuum/default.nix
@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub
+  , qt4, qmake4Hook, openssl
+  , xorgproto, libX11, libXScrnSaver
+  , xz, zlib
+}:
+stdenv.mkDerivation {
+  pname = "vacuum-im";
+  version = "1.3.0.20160104";
+
+  src = fetchFromGitHub {
+    owner = "Vacuum-IM";
+    repo = "vacuum-im";
+    rev = "1.3.0.20160104-Alpha";
+    sha256 = "1jcw9c7s75y4c3m4skfc3cc0i519z39b23n997vj5mwcjplxyc76";
+  };
+
+  buildInputs = [
+    qt4 openssl xorgproto libX11 libXScrnSaver xz zlib
+  ];
+
+  # hack: needed to fix build issues in
+  # https://hydra.nixos.org/build/38322959/nixlog/1
+  # should be an upstream issue but it's easy to fix
+  NIX_LDFLAGS = "-lz";
+
+  nativeBuildInputs = [ qmake4Hook ];
+
+  preConfigure = ''
+    qmakeFlags="$qmakeFlags INSTALL_PREFIX=$out"
+  '';
+
+  hardeningDisable = [ "format" ];
+
+  meta = with lib; {
+    description = "An XMPP client fully composed of plugins";
+    maintainers = [ maintainers.raskin ];
+    platforms = platforms.linux;
+    license = licenses.gpl3;
+    homepage = "http://www.vacuum-im.org";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/viber/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/viber/default.nix
new file mode 100644
index 000000000000..53eea50767f5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/viber/default.nix
@@ -0,0 +1,109 @@
+{fetchurl, lib, stdenv, dpkg, makeWrapper,
+ alsa-lib, cups, curl, dbus, expat, fontconfig, freetype, glib, gst_all_1,
+ harfbuzz, libcap, libGL, libGLU, libpulseaudio, libxkbcommon, libxml2, libxslt,
+ nspr, nss, openssl, systemd, wayland, xorg, zlib, ...
+}:
+
+stdenv.mkDerivation {
+  pname = "viber";
+  version = "13.3.1.22";
+
+  src = fetchurl {
+    # Official link: https://download.cdn.viber.com/cdn/desktop/Linux/viber.deb
+    url = "http://web.archive.org/web/20210602004133/https://download.cdn.viber.com/cdn/desktop/Linux/viber.deb";
+    sha256 = "0rs26x0lycavybn6k1hbb5kzms0zzcmxlrmi4g8k7vyafj6s8dqh";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ dpkg ];
+
+  dontUnpack = true;
+
+  libPath = lib.makeLibraryPath [
+      alsa-lib
+      cups
+      curl
+      dbus
+      expat
+      fontconfig
+      freetype
+      glib
+      gst_all_1.gst-plugins-base
+      gst_all_1.gstreamer
+      harfbuzz
+      libcap
+      libGLU libGL
+      libpulseaudio
+      libxkbcommon
+      libxml2
+      libxslt
+      nspr
+      nss
+      openssl
+      stdenv.cc.cc
+      systemd
+      wayland
+      zlib
+
+      xorg.libICE
+      xorg.libSM
+      xorg.libX11
+      xorg.libxcb
+      xorg.libXcomposite
+      xorg.libXcursor
+      xorg.libXdamage
+      xorg.libXext
+      xorg.libXfixes
+      xorg.libXi
+      xorg.libXrandr
+      xorg.libXrender
+      xorg.libXScrnSaver
+      xorg.libXtst
+      xorg.xcbutilimage
+      xorg.xcbutilkeysyms
+      xorg.xcbutilrenderutil
+      xorg.xcbutilwm
+  ]
+  ;
+
+  installPhase = ''
+    dpkg-deb -x $src $out
+    mkdir -p $out/bin
+
+    # Soothe nix-build "suspicions"
+    chmod -R g-w $out
+
+    for file in $(find $out -type f \( -perm /0111 -o -name \*.so\* \) ); do
+      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" "$file" || true
+      patchelf --set-rpath $libPath:$out/opt/viber/lib $file || true
+    done
+
+    # qt.conf is not working, so override everything using environment variables
+    wrapProgram $out/opt/viber/Viber \
+      --set QT_PLUGIN_PATH "$out/opt/viber/plugins" \
+      --set QT_XKB_CONFIG_ROOT "${xorg.xkeyboardconfig}/share/X11/xkb" \
+      --set QTCOMPOSE "${xorg.libX11.out}/share/X11/locale" \
+      --set QML2_IMPORT_PATH "$out/opt/viber/qml"
+    ln -s $out/opt/viber/Viber $out/bin/viber
+
+    mv $out/usr/share $out/share
+    rm -rf $out/usr
+
+    # Fix the desktop link
+    substituteInPlace $out/share/applications/viber.desktop \
+      --replace /opt/viber/Viber $out/opt/viber/Viber \
+      --replace /usr/share/ $out/share/
+  '';
+
+  dontStrip = true;
+  dontPatchELF = true;
+
+  meta = {
+    homepage = "http://www.viber.com";
+    description = "An instant messaging and Voice over IP (VoIP) app";
+    license = lib.licenses.unfree;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with lib.maintainers; [ jagajaga ];
+  };
+
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/vk-cli/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/vk-cli/default.nix
new file mode 100644
index 000000000000..bb34fd7534c9
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/vk-cli/default.nix
@@ -0,0 +1,54 @@
+{ stdenv
+, lib
+, fetchurl
+, curl
+, p7zip
+, glibc
+, ncurses
+, openssl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "vk-cli";
+  version = "0.7.6";
+
+  src = fetchurl {
+    url = "https://github.com/vk-cli/vk/releases/download/${version}/vk-${version}-64-bin.7z";
+    sha256 = "sha256-Y40oLjddunrd7ZF1JbCcgjSCn8jFTubq69jhAVxInXw=";
+  };
+
+  nativeBuildInputs = [
+    p7zip
+  ];
+
+  buildInputs = [
+    curl
+    ncurses
+    openssl
+  ];
+
+  unpackPhase = ''
+    mkdir -p $TMP/
+    7z x $src -o$TMP/
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin/
+    mv $TMP/vk-${version}-64-bin vk-cli
+    install -D vk-cli --target-directory=$out/bin/
+  '';
+
+  postFixup = ''
+    patchelf $out/bin/vk-cli \
+      --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+      --set-rpath "${lib.makeLibraryPath [ curl glibc ]}"
+  '';
+
+  meta = with lib; {
+    description = "A console (ncurses) client for vk.com written in D";
+    homepage = "https://github.com/vk-cli/vk";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ dan4ik605743 ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix
new file mode 100644
index 000000000000..51b119aa6de5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix
@@ -0,0 +1,73 @@
+{ stdenv, lib, fetchurl, rpmextract, undmg, autoPatchelfHook
+, xorg, gtk3, gnome2, nss, alsa-lib, udev, libnotify
+, wrapGAppsHook }:
+
+let
+  pname = "vk-messenger";
+  version = "5.2.3";
+
+  src = {
+    i686-linux = fetchurl {
+      url = "https://desktop.userapi.com/rpm/master/vk-${version}.i686.rpm";
+      sha256 = "09zi2rzsank6lhw1z9yar1rp634y6qskvr2i0rvqg2fij7cy6w19";
+    };
+    x86_64-linux = fetchurl {
+      url = "https://desktop.userapi.com/rpm/master/vk-${version}.x86_64.rpm";
+      sha256 = "1m6saanpv1k5wc5s58jpf0wsgjsj7haabx8nycm1fjyhky1chirb";
+    };
+    x86_64-darwin = fetchurl {
+      url = "https://web.archive.org/web/20210310071550/https://desktop.userapi.com/mac/master/vk.dmg";
+      sha256 = "0j5qsr0fyl55d0x46xm4h2ykwr4y9z1dsllhqx5lnc15nc051s9b";
+    };
+  }.${stdenv.system} or (throw "Unsupported system: ${stdenv.system}");
+
+  meta = with lib; {
+    description = "Simple and Convenient Messaging App for VK";
+    homepage = "https://vk.com/messenger";
+    license = licenses.unfree;
+    maintainers = [ ];
+    platforms = ["i686-linux" "x86_64-linux" "x86_64-darwin"];
+  };
+
+  linux = stdenv.mkDerivation {
+    inherit pname version src meta;
+
+    nativeBuildInputs = [ rpmextract autoPatchelfHook wrapGAppsHook ];
+    buildInputs = (with xorg; [
+      libXdamage libXtst libXScrnSaver libxkbfile
+    ]) ++ [ gtk3 nss alsa-lib ];
+
+    runtimeDependencies = [ (lib.getLib udev) libnotify ];
+
+    unpackPhase = ''
+      rpmextract $src
+    '';
+
+    buildPhase = ''
+      substituteInPlace usr/share/applications/vk.desktop \
+        --replace /usr/share/pixmaps/vk.png vk
+    '';
+
+    installPhase = ''
+      mkdir $out
+      cd usr
+      cp -r --parents bin $out
+      cp -r --parents share/vk $out
+      cp -r --parents share/applications $out
+      cp -r --parents share/pixmaps $out
+    '';
+  };
+
+  darwin = stdenv.mkDerivation {
+    inherit pname version src meta;
+
+    nativeBuildInputs = [ undmg ];
+
+    sourceRoot = ".";
+
+    installPhase = ''
+      mkdir -p $out/Applications
+      cp -r *.app $out/Applications
+    '';
+  };
+in if stdenv.isDarwin then darwin else linux
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/wavebox/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/wavebox/default.nix
new file mode 100644
index 000000000000..371ac91120b5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/wavebox/default.nix
@@ -0,0 +1,68 @@
+{ alsa-lib, autoPatchelfHook, fetchurl, gtk3, libnotify
+, makeDesktopItem, makeWrapper, nss, lib, stdenv, udev, xdg-utils
+, xorg
+}:
+
+with lib;
+
+let
+  bits = "x86_64";
+
+  version = "4.11.3";
+
+  desktopItem = makeDesktopItem rec {
+    name = "Wavebox";
+    exec = "wavebox";
+    icon = "wavebox";
+    desktopName = name;
+    genericName = name;
+    categories = "Network;";
+  };
+
+  tarball = "Wavebox_${replaceStrings ["."] ["_"] (toString version)}_linux_${bits}.tar.gz";
+
+in stdenv.mkDerivation {
+  pname = "wavebox";
+  inherit version;
+  src = fetchurl {
+    url = "https://github.com/wavebox/waveboxapp/releases/download/v${version}/${tarball}";
+    sha256 = "0z04071lq9bfyrlg034fmvd4346swgfhxbmsnl12m7c2m2b9z784";
+  };
+
+  # don't remove runtime deps
+  dontPatchELF = true;
+
+  nativeBuildInputs = [ autoPatchelfHook makeWrapper ];
+
+  buildInputs = with xorg; [
+    libXdmcp libXScrnSaver libXtst
+  ] ++ [
+    alsa-lib gtk3 nss
+  ];
+
+  runtimeDependencies = [ (getLib udev) libnotify ];
+
+  installPhase = ''
+    mkdir -p $out/bin $out/opt/wavebox
+    cp -r * $out/opt/wavebox
+
+    # provide desktop item and icon
+    mkdir -p $out/share/applications $out/share/pixmaps
+    ln -s ${desktopItem}/share/applications/* $out/share/applications
+    ln -s $out/opt/wavebox/Wavebox-linux-x64/wavebox_icon.png $out/share/pixmaps/wavebox.png
+  '';
+
+  postFixup = ''
+    makeWrapper $out/opt/wavebox/Wavebox $out/bin/wavebox \
+      --prefix PATH : ${xdg-utils}/bin
+  '';
+
+  meta = with lib; {
+    description = "Wavebox messaging application";
+    homepage = "https://wavebox.io";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ rawkode ];
+    platforms = ["x86_64-linux"];
+    hydraPlatforms = [];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/whatsapp-for-linux/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/whatsapp-for-linux/default.nix
new file mode 100644
index 000000000000..0405dddf7cdc
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/whatsapp-for-linux/default.nix
@@ -0,0 +1,47 @@
+{ fetchFromGitHub
+, lib
+, stdenv
+, gtkmm3
+, webkitgtk
+, cmake
+, pkg-config
+, libappindicator-gtk3
+, gst_all_1
+, pcre
+}:
+
+stdenv.mkDerivation rec {
+  pname = "whatsapp-for-linux";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = "eneshecan";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-dB+NsoUEYM3cT0cg5ZOkBGW7ozRGFWSsYQMja3CjaHM=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+  ];
+
+  buildInputs = [
+    gtkmm3
+    webkitgtk
+    libappindicator-gtk3
+    gst_all_1.gst-plugins-base
+    gst_all_1.gst-plugins-good
+    gst_all_1.gst-plugins-bad
+    gst_all_1.gst-libav
+    pcre
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/eneshecan/whatsapp-for-linux";
+    description = "Whatsapp desktop messaging app";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ bartuka ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix
new file mode 100644
index 000000000000..fc8fbdcede3d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix
@@ -0,0 +1,175 @@
+{ atomEnv
+, autoPatchelfHook
+, dpkg
+, fetchurl
+, makeDesktopItem
+, makeWrapper
+, stdenv
+, lib
+, udev
+, wrapGAppsHook
+, cpio
+, xar
+, libdbusmenu
+}:
+
+let
+
+  inherit (stdenv.hostPlatform) system;
+
+  throwSystem = throw "Unsupported system: ${system}";
+
+  pname = "wire-desktop";
+
+  version = {
+    x86_64-darwin = "3.26.4145";
+    x86_64-linux = "3.26.2941";
+  }.${system} or throwSystem;
+
+  sha256 = {
+    x86_64-darwin = "1ck74a9z2mrwmljrqm347bqhjiaf1v0bf1jfnp58cqngh5ygqnf2";
+    x86_64-linux = "01gy84gr0gw5ap7hpy72azaf6hlzac7vxkn5cgad5sfbyzxgjgc9";
+  }.${system} or throwSystem;
+
+  meta = with lib; {
+    description = "A modern, secure messenger for everyone";
+    longDescription = ''
+      Wire Personal is a secure, privacy-friendly messenger. It combines useful
+      and fun features, audited security, and a beautiful, distinct user
+      interface.  It does not require a phone number to register and chat.
+
+        * End-to-end encrypted chats, calls, and files
+        * Crystal clear voice and video calling
+        * File and screen sharing
+        * Timed messages and chats
+        * Synced across your phone, desktop and tablet
+    '';
+    homepage = "https://wire.com/";
+    downloadPage = "https://wire.com/download/";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [
+      arianvp
+      kiwi
+      toonn
+    ];
+    platforms = [
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+  };
+
+  linux = stdenv.mkDerivation rec {
+    inherit pname version meta;
+
+    src = fetchurl {
+      url = "https://wire-app.wire.com/linux/debian/pool/main/"
+      + "Wire-${version}_amd64.deb";
+      inherit sha256;
+    };
+
+    desktopItem = makeDesktopItem {
+      categories = "Network;InstantMessaging;Chat;VideoConference";
+      comment = "Secure messenger for everyone";
+      desktopName = "Wire";
+      exec = "wire-desktop %U";
+      genericName = "Secure messenger";
+      icon = "wire-desktop";
+      name = "wire-desktop";
+      extraEntries = ''
+        StartupWMClass=Wire
+      '';
+    };
+
+    dontBuild = true;
+    dontConfigure = true;
+    dontPatchELF = true;
+    dontWrapGApps = true;
+
+    nativeBuildInputs = [
+      autoPatchelfHook
+      dpkg
+      makeWrapper
+      wrapGAppsHook
+    ];
+
+    buildInputs = atomEnv.packages;
+
+    unpackPhase = ''
+      runHook preUnpack
+
+      dpkg-deb -x $src .
+
+      runHook postUnpack
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p "$out/bin"
+      cp -R "opt" "$out"
+      cp -R "usr/share" "$out/share"
+      chmod -R g-w "$out"
+
+      # Desktop file
+      mkdir -p "$out/share/applications"
+      cp "${desktopItem}/share/applications/"* "$out/share/applications"
+
+      runHook postInstall
+    '';
+
+    runtimeDependencies = [
+      (lib.getLib udev)
+      libdbusmenu
+    ];
+
+    postFixup = ''
+      makeWrapper $out/opt/Wire/wire-desktop $out/bin/wire-desktop \
+        "''${gappsWrapperArgs[@]}"
+    '';
+  };
+
+  darwin = stdenv.mkDerivation {
+    inherit pname version meta;
+
+    src = fetchurl {
+      url = "https://github.com/wireapp/wire-desktop/releases/download/"
+          + "macos%2F${version}/Wire.pkg";
+      inherit sha256;
+    };
+
+    buildInputs = [
+      cpio
+      xar
+    ];
+
+    unpackPhase = ''
+      runHook preUnpack
+
+      xar -xf $src
+      cd com.wearezeta.zclient.mac.pkg
+
+      runHook postUnpack
+    '';
+
+    buildPhase = ''
+      runHook preBuild
+
+      cat Payload | gunzip -dc | cpio -i
+
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/Applications
+      cp -r Wire.app $out/Applications
+
+      runHook postInstall
+    '';
+  };
+
+in
+if stdenv.isDarwin
+then darwin
+else linux
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/default.nix
new file mode 100644
index 000000000000..4367230f7756
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/default.nix
@@ -0,0 +1,25 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "xmpp-client";
+  version = "20160916-${lib.strings.substring 0 7 rev}";
+  rev = "abbf9020393e8caae3e8996a16ce48446e31cf0e";
+
+  goPackagePath = "github.com/agl/xmpp-client";
+
+  src = fetchFromGitHub {
+    owner = "agl";
+    repo = "xmpp-client";
+    inherit rev;
+    sha256 = "0j9mfr208cachzm39i8b94v5qk9hws278vv2ms9ma4wn16wns81s";
+  };
+
+  goDeps = ./deps.nix;
+
+  meta = with lib; {
+    description = "An XMPP client with OTR support";
+    homepage = "https://github.com/agl/xmpp-client";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ codsl ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/deps.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/deps.nix
new file mode 100644
index 000000000000..caa41024fc61
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/xmpp-client/deps.nix
@@ -0,0 +1,20 @@
+[
+  {
+    goPackagePath = "golang.org/x/net";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/net";
+      rev = "62ac18b461605b4be188bbc7300e9aa2bc836cd4";
+      sha256 = "0lwwvbbwbf3yshxkfhn6z20gd45dkvnmw2ms36diiy34krgy402p";
+    };
+  }
+  {
+    goPackagePath = "golang.org/x/crypto";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/crypto";
+      rev = "575fdbe86e5dd89229707ebec0575ce7d088a4a6";
+      sha256 = "1kgv1mkw9y404pk3lcwbs0vgl133mwyp294i18jg9hp10s5d56xa";
+    };
+  }
+]
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/ytalk/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/ytalk/default.nix
new file mode 100644
index 000000000000..1ccc9fbe6f57
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/ytalk/default.nix
@@ -0,0 +1,21 @@
+{ lib, stdenv, fetchurl, ncurses }:
+
+stdenv.mkDerivation rec {
+  pname = "ytalk";
+  version = "3.3.0";
+
+  src = fetchurl {
+    url = "ftp://ftp.ourproject.org/pub/ytalk/${pname}-${version}.tar.gz";
+    sha256 = "1d3jhnj8rgzxyxjwfa22vh45qwzjvxw1qh8fz6b7nfkj3zvk9jvf";
+  };
+
+  buildInputs = [ ncurses ];
+
+  meta = {
+    homepage    = "http://ytalk.ourproject.org";
+    description = "A terminal based talk client";
+    platforms   = lib.platforms.unix;
+    maintainers = with lib.maintainers; [ taeer ];
+    license     = lib.licenses.gpl2Plus;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/default.nix
new file mode 100644
index 000000000000..5395946125d0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/default.nix
@@ -0,0 +1,130 @@
+{ stdenv
+, lib
+, fetchurl
+, makeWrapper
+  # Dynamic libraries
+, alsa-lib
+, atk
+, cairo
+, dbus
+, libGL
+, fontconfig
+, freetype
+, gtk3
+, gdk-pixbuf
+, glib
+, pango
+, wayland
+, xorg
+, libxkbcommon
+, zlib
+  # Runtime
+, coreutils
+, pciutils
+, procps
+, util-linux
+, pulseaudioSupport ? true
+, libpulseaudio
+}:
+
+let
+  version = "5.7.31792.0820";
+  srcs = {
+    x86_64-linux = fetchurl {
+      url = "https://zoom.us/client/${version}/zoom_x86_64.pkg.tar.xz";
+      sha256 = "16p8wn67hb6p9rn684bbpwz8w5knyqw9rv2nnw6cwg949qjv43lm";
+    };
+  };
+
+  libs = lib.makeLibraryPath ([
+    # $ LD_LIBRARY_PATH=$NIX_LD_LIBRARY_PATH:$PWD ldd zoom | grep 'not found'
+    alsa-lib
+    atk
+    cairo
+    dbus
+    libGL
+    fontconfig
+    freetype
+    gtk3
+    gdk-pixbuf
+    glib
+    pango
+    stdenv.cc.cc
+    wayland
+    xorg.libX11
+    xorg.libxcb
+    xorg.libXcomposite
+    xorg.libXext
+    libxkbcommon
+    xorg.libXrender
+    zlib
+    xorg.xcbutilimage
+    xorg.xcbutilkeysyms
+    xorg.libXfixes
+    xorg.libXtst
+  ] ++ lib.optional (pulseaudioSupport) libpulseaudio);
+
+in
+stdenv.mkDerivation rec {
+  pname = "zoom";
+  inherit version;
+
+  src = srcs.${stdenv.hostPlatform.system};
+
+  dontUnpack = true;
+
+  nativeBuildInputs = [
+    makeWrapper
+  ];
+
+  installPhase = ''
+    runHook preInstall
+    mkdir $out
+    tar -C $out -xf $src
+    mv $out/usr/* $out/
+    runHook postInstall
+  '';
+
+  postFixup = ''
+    # Desktop File
+    substituteInPlace $out/share/applications/Zoom.desktop \
+        --replace "Exec=/usr/bin/zoom" "Exec=$out/bin/zoom"
+
+    for i in zopen zoom ZoomLauncher; do
+      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/opt/zoom/$i
+    done
+
+    # ZoomLauncher sets LD_LIBRARY_PATH before execing zoom
+    wrapProgram $out/opt/zoom/zoom \
+      --prefix LD_LIBRARY_PATH ":" ${libs}
+
+    rm $out/bin/zoom
+    # Zoom expects "zopen" executable (needed for web login) to be present in CWD. Or does it expect
+    # everybody runs Zoom only after cd to Zoom package directory? Anyway, :facepalm:
+    # Clear Qt paths to prevent tripping over "foreign" Qt resources.
+    # Clear Qt screen scaling settings to prevent over-scaling.
+    makeWrapper $out/opt/zoom/ZoomLauncher $out/bin/zoom \
+      --run "cd $out/opt/zoom" \
+      --unset QML2_IMPORT_PATH \
+      --unset QT_PLUGIN_PATH \
+      --unset QT_SCREEN_SCALE_FACTORS \
+      --prefix PATH : ${lib.makeBinPath [ coreutils glib.dev pciutils procps util-linux ]} \
+      --prefix LD_LIBRARY_PATH ":" ${libs}
+
+    # Backwards compatiblity: we used to call it zoom-us
+    ln -s $out/bin/{zoom,zoom-us}
+  '';
+
+  # already done
+  dontPatchELF = true;
+
+  passthru.updateScript = ./update.sh;
+
+  meta = with lib; {
+    homepage = "https://zoom.us/";
+    description = "zoom.us video conferencing application";
+    license = licenses.unfree;
+    platforms = builtins.attrNames srcs;
+    maintainers = with maintainers; [ danbst tadfisher doronbehar ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/update.sh b/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/update.sh
new file mode 100755
index 000000000000..6ef9ec32538f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/zoom-us/update.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl pup common-updater-scripts
+
+set -eu -o pipefail
+
+version="$(curl -Ls https://zoom.us/download\?os\=linux | \
+  pup '.linux-ver-text text{}' | \
+  awk -F'[ ().]' '{printf $2"."$3"."$6"."$7"\n"}')"
+
+update-source-version zoom-us "$version"
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
new file mode 100644
index 000000000000..b2f80c70d240
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
@@ -0,0 +1,53 @@
+{ lib
+, python3
+, fetchFromGitHub
+, glibcLocales
+, libnotify
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "zulip-term";
+  version = "0.6.0";
+
+  # no tests on PyPI
+  src = fetchFromGitHub {
+    owner = "zulip";
+    repo = "zulip-terminal";
+    rev = version;
+    sha256 = "sha256-nlvZaGMVRRCu8PZHxPWjNSxkqhZs0T/tE1js/3pDUFk=";
+  };
+
+  patches = [
+    ./pytest-executable-name.patch
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    urwid
+    zulip
+    urwid-readline
+    beautifulsoup4
+    lxml
+    typing-extensions
+    python-dateutil
+    tzlocal
+  ];
+
+  checkInputs = [
+    glibcLocales
+  ] ++ (with python3.pkgs; [
+    pytestCheckHook
+    pytest-cov
+    pytest-mock
+  ]);
+
+  makeWrapperArgs = [
+    "--prefix" "PATH" ":" (lib.makeBinPath [ libnotify ])
+  ];
+
+  meta = with lib; {
+    description = "Zulip's official terminal client";
+    homepage = "https://github.com/zulip/zulip-terminal";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/pytest-executable-name.patch b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/pytest-executable-name.patch
new file mode 100644
index 000000000000..4602a254ab88
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip-term/pytest-executable-name.patch
@@ -0,0 +1,13 @@
+diff --git a/tests/cli/test_run.py b/tests/cli/test_run.py
+index 459aa82..c6e434e 100644
+--- a/tests/cli/test_run.py
++++ b/tests/cli/test_run.py
+@@ -180,7 +180,7 @@ def test_main_multiple_autohide_options(capsys, options):
+         assert str(e.value) == "2"
+     captured = capsys.readouterr()
+     lines = captured.err.strip('\n')
+-    lines = lines.split("pytest: ", 1)[1]
++    lines = lines.split("__main__.py: ", 1)[1]
+     expected = ("error: argument {}: not allowed "
+                 "with argument {}".format(options[1], options[0]))
+     assert lines == expected
diff --git a/nixpkgs/pkgs/applications/networking/instant-messengers/zulip/default.nix b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip/default.nix
new file mode 100644
index 000000000000..1fce1a6b6e52
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/instant-messengers/zulip/default.nix
@@ -0,0 +1,40 @@
+{ lib
+, fetchurl
+, appimageTools
+}:
+
+let
+  pname = "zulip";
+  version = "5.8.1";
+  name = "${pname}-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/zulip/zulip-desktop/releases/download/v${version}/Zulip-${version}-x86_64.AppImage";
+    sha256 = "02m18y5j6jmmlygv8ycwaaq6n7mvj97ljhd3l9pvii0adwcvrpfz";
+    name="${pname}-${version}.AppImage";
+  };
+
+  appimageContents = appimageTools.extractType2 {
+    inherit name src;
+  };
+
+in appimageTools.wrapType2 {
+  inherit name src;
+
+  extraInstallCommands = ''
+    mv $out/bin/${name} $out/bin/${pname}
+    install -m 444 -D ${appimageContents}/zulip.desktop $out/share/applications/zulip.desktop
+    install -m 444 -D ${appimageContents}/usr/share/icons/hicolor/512x512/apps/zulip.png \
+      $out/share/icons/hicolor/512x512/apps/zulip.png
+    substituteInPlace $out/share/applications/zulip.desktop \
+      --replace 'Exec=AppRun' 'Exec=${pname}'
+  '';
+
+  meta = with lib; {
+    description = "Desktop client for Zulip Chat";
+    homepage = "https://zulip.com";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ andersk jonafato ];
+    platforms = [ "x86_64-linux" ];
+  };
+}