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-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/arora/default.nix26
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/brave/default.nix157
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/browsh/default.nix61
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/browsh/deps.nix264
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/captive-browser/default.nix22
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/browser.nix94
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/common.nix337
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/default.nix211
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/dont-use-ANGLE-by-default.patch26
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-vdpau-support-for-nvidia.patch74
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-video-acceleration-on-linux.patch48
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/nix_plugin_paths_68.patch61
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/no-build-timestamps.patch17
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/remove-webp-include-69.patch11
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/patches/widevine-79.patch13
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/plugins.nix93
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/update.nix271
-rwxr-xr-xnixpkgs/pkgs/applications/networking/browsers/chromium/update.sh4
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/chromium/upstream-info.nix18
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/dillo/default.nix32
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/elinks/default.nix53
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/elinks/gc-init.patch17
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/elinks/openssl-1.1.patch51
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/eolie/default.nix67
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/ephemeral/default.nix70
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/falkon/default.nix44
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix965
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox-bin/default.nix210
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix965
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox-bin/release_sources.nix965
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox-bin/update.nix90
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/common.nix315
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/env_var_for_system_dir.patch6
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch23
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-min-65.patch25
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/packages.nix94
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/update.nix35
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/firefox/wrapper.nix182
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/google-chrome/default.nix141
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/links2/default.nix39
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/luakit/default.nix62
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/lynx/default.nix50
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/midori/default.nix59
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/default.nix147
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/standalone.nix106
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/next/default.nix95
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/next/next-gtk-webkit.nix50
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/opera/default.nix122
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/palemoon/default.nix133
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/qtchan/default.nix31
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/qutebrowser/default.nix113
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/qutebrowser/fix-restart.patch19
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/surf/default.nix47
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle-bin/default.nix412
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle/extensions.nix111
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/vimb/default.nix34
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/vivaldi/default.nix94
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/vivaldi/ffmpeg-codecs.nix32
-rwxr-xr-xnixpkgs/pkgs/applications/networking/browsers/vivaldi/update.sh46
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/vivaldi/widevine.nix33
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/w3m/RAND_egd.libressl.patch11
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/w3m/default.nix100
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/w3m/no-x11.patch14
-rw-r--r--nixpkgs/pkgs/applications/networking/browsers/webmacs/default.nix75
64 files changed, 8193 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/networking/browsers/arora/default.nix b/nixpkgs/pkgs/applications/networking/browsers/arora/default.nix
new file mode 100644
index 000000000000..88ad2c609bfa
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/arora/default.nix
@@ -0,0 +1,26 @@
+{ stdenv, fetchFromGitHub, qt4, qmake4Hook }:
+
+stdenv.mkDerivation rec {
+  pname = "arora";
+  version = "0.11.0";
+
+  src = fetchFromGitHub {
+    owner = "Arora";
+    repo = "arora";
+    rev = version;
+    sha256 = "0wmivgx3mw51rghi6q8fgivpkqc98z2mqmllf7c98ln0wd8rkf3c";
+  };
+
+  buildInputs = [ qt4 ];
+  nativeBuildInputs = [ qmake4Hook ];
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    platforms = qt4.meta.platforms;
+    maintainers = [ maintainers.phreedom ];
+    description = "A cross-platform Qt4 Webkit browser";
+    homepage = "https://github.com/Arora/arora";
+    license = with licenses; [ gpl2 gpl3 ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/brave/default.nix b/nixpkgs/pkgs/applications/networking/browsers/brave/default.nix
new file mode 100644
index 000000000000..151ce5edc355
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/brave/default.nix
@@ -0,0 +1,157 @@
+{ stdenv, lib, fetchurl
+, dpkg
+, alsaLib
+, at-spi2-atk
+, at-spi2-core
+, atk
+, cairo
+, cups
+, dbus
+, expat
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, gnome2
+, gnome3
+, gsettings-desktop-schemas
+, gtk3
+, libpulseaudio
+, libuuid
+, libX11
+, libXcomposite
+, libXcursor
+, libXdamage
+, libXext
+, libXfixes
+, libXi
+, libXrandr
+, libXrender
+, libXScrnSaver
+, libXtst
+, nspr
+, nss
+, pango
+, udev
+, xorg
+, zlib
+, xdg_utils
+, wrapGAppsHook
+}:
+
+let
+
+rpath = lib.makeLibraryPath [
+  alsaLib
+  at-spi2-atk
+  at-spi2-core
+  atk
+  cairo
+  cups
+  dbus
+  expat
+  fontconfig
+  freetype
+  gdk-pixbuf
+  glib
+  gnome2.GConf
+  gtk3
+  libpulseaudio
+  libX11
+  libXScrnSaver
+  libXcomposite
+  libXcursor
+  libXdamage
+  libXext
+  libXfixes
+  libXi
+  libXrandr
+  libXrender
+  libXtst
+  libuuid
+  nspr
+  nss
+  pango
+  udev
+  xdg_utils
+  xorg.libxcb
+  zlib
+];
+
+in
+
+stdenv.mkDerivation rec {
+  pname = "brave";
+  version = "1.7.92";
+
+  src = fetchurl {
+    url = "https://github.com/brave/brave-browser/releases/download/v${version}/brave-browser_${version}_amd64.deb";
+    sha256 = "1f262xh88c83m6ixqxc69z8kvkl3qbjc6jnv2g8n0flw8s70hs7z";
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+
+  nativeBuildInputs = [ dpkg wrapGAppsHook ];
+
+  buildInputs = [ glib gsettings-desktop-schemas gnome3.adwaita-icon-theme ];
+
+  unpackPhase = "dpkg-deb --fsys-tarfile $src | tar -x --no-same-permissions --no-same-owner";
+
+  installPhase = ''
+      mkdir -p $out $out/bin
+
+      cp -R usr/share $out
+      cp -R opt/ $out/opt
+
+      export BINARYWRAPPER=$out/opt/brave.com/brave/brave-browser
+
+      # Fix path to bash in $BINARYWRAPPER
+      substituteInPlace $BINARYWRAPPER \
+          --replace /bin/bash ${stdenv.shell}
+
+      ln -sf $BINARYWRAPPER $out/bin/brave
+
+      patchelf \
+          --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+          --set-rpath "${rpath}" $out/opt/brave.com/brave/brave
+
+      # Fix paths
+      substituteInPlace $out/share/applications/brave-browser.desktop \
+          --replace /usr/bin/brave-browser-stable $out/bin/brave
+      substituteInPlace $out/share/gnome-control-center/default-apps/brave-browser.xml \
+          --replace /opt/brave.com $out/opt/brave.com
+      substituteInPlace $out/share/menu/brave-browser.menu \
+          --replace /opt/brave.com $out/opt/brave.com
+      substituteInPlace $out/opt/brave.com/brave/default-app-block \
+          --replace /opt/brave.com $out/opt/brave.com
+
+      # Correct icons location
+      icon_sizes=("16" "22" "24" "32" "48" "64" "128" "256")
+
+      for icon in ''${icon_sizes[*]}
+      do
+          mkdir -p $out/share/icons/hicolor/$icon\x$icon/apps
+          ln -s $out/opt/brave.com/brave/product_logo_$icon.png $out/share/icons/hicolor/$icon\x$icon/apps/brave-browser.png
+      done
+
+      # Replace xdg-settings and xdg-mime
+      ln -sf ${xdg_utils}/bin/xdg-settings $out/opt/brave.com/brave/xdg-settings
+      ln -sf ${xdg_utils}/bin/xdg-mime $out/opt/brave.com/brave/xdg-mime
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "https://brave.com/";
+    description = "Privacy-oriented browser for Desktop and Laptop computers";
+    changelog = "https://github.com/brave/brave-browser/blob/v${version}/CHANGELOG.md";
+    longDescription = ''
+      Brave browser blocks the ads and trackers that slow you down,
+      chew up your bandwidth, and invade your privacy. Brave lets you
+      contribute to your favorite creators automatically.
+    '';
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ uskudnik rht jefflabonte ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/browsh/default.nix b/nixpkgs/pkgs/applications/networking/browsers/browsh/default.nix
new file mode 100644
index 000000000000..3662c3badd3e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/browsh/default.nix
@@ -0,0 +1,61 @@
+{ stdenv, buildGoPackage, fetchurl, fetchFromGitHub, go-bindata }:
+
+let
+  version = "1.6.4";
+
+  # TODO: must build the extension instead of downloading it. But since it's
+  # literally an asset that is indifferent regardless of the platform, this
+  # might be just enough.
+  webext = fetchurl {
+    url = "https://github.com/browsh-org/browsh/releases/download/v${version}/browsh-${version}-an.fx.xpi";
+    sha256 = "1shf1s9s525wns5vrsc4ns21zjxm1si43lx6v0q8ma6vd5x5445l";
+  };
+
+in buildGoPackage rec {
+  inherit version;
+
+  pname = "browsh";
+
+  goPackagePath = "browsh";
+
+  # further go package dependencies are defined in deps.nix, see line below.
+  src = fetchFromGitHub {
+    owner = "browsh-org";
+    repo = "browsh";
+    rev = "v${version}";
+    sha256 = "0gvf5k1gm81xxg7ha309kgfkgl5357dli0fbc4z01rmfgbl0rfa0";
+  };
+
+  nativeBuildInputs = [ go-bindata ];
+
+  # embed the web extension in a go file and place it where it's supposed to
+  # be. See
+  # https://github.com/browsh-org/browsh/blob/v1.5.0/interfacer/contrib/xpi2bin.sh
+  preBuild = ''
+    xpiprefix="$(mktemp -d)"
+    cp "${webext}" "$xpiprefix/browsh.xpi"
+    go-bindata \
+      -prefix "$xpiprefix" \
+      -pkg browsh \
+      -o "$NIX_BUILD_TOP/go/src/${goPackagePath}/interfacer/src/browsh/webextension.go" \
+      "$xpiprefix/browsh.xpi"
+
+    sed \
+      -e 's:Asset("/browsh.xpi"):Asset("browsh.xpi"):g' \
+      -i "$NIX_BUILD_TOP/go/src/${goPackagePath}/interfacer/src/browsh/firefox.go"
+  '';
+
+  postBuild = ''
+    mv "$NIX_BUILD_TOP/go/bin/src" "$NIX_BUILD_TOP/go/bin/browsh"
+  '';
+
+  goDeps = ./deps.nix;
+
+  meta = with stdenv.lib; {
+    description = "A fully-modern text-based browser, rendering to TTY and browsers";
+    homepage = "https://www.brow.sh/";
+    maintainers = [ maintainers.kalbasit ];
+    license = stdenv.lib.licenses.lgpl21;
+    platforms = stdenv.lib.platforms.linux ++ stdenv.lib.platforms.darwin;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/browsh/deps.nix b/nixpkgs/pkgs/applications/networking/browsers/browsh/deps.nix
new file mode 100644
index 000000000000..9a6a898beb5b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/browsh/deps.nix
@@ -0,0 +1,264 @@
+# file generated from Gopkg.lock using dep2nix (https://github.com/nixcloud/dep2nix)
+[
+  {
+    goPackagePath  = "github.com/NYTimes/gziphandler";
+    fetch = {
+      type = "git";
+      url = "https://github.com/NYTimes/gziphandler";
+      rev =  "dd0439581c7657cb652dfe5c71d7d48baf39541d";
+      sha256 = "0rhrjlw220hnymzfccm0yir3pc9dpj7h3gwzhzq2cbsb3hhsqvyy";
+    };
+  }
+  {
+    goPackagePath  = "github.com/fsnotify/fsnotify";
+    fetch = {
+      type = "git";
+      url = "https://github.com/fsnotify/fsnotify";
+      rev =  "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9";
+      sha256 = "07va9crci0ijlivbb7q57d2rz9h27zgn2fsm60spjsqpdbvyrx4g";
+    };
+  }
+  {
+    goPackagePath  = "github.com/gdamore/encoding";
+    fetch = {
+      type = "git";
+      url = "https://github.com/gdamore/encoding";
+      rev =  "6289cdc94c00ac4aa177771c5fce7af2f96b626d";
+      sha256 = "1vmm5zll92i2fm4ajqx0gyx0p9j36496x5nabi3y0x7h0inv0pk9";
+    };
+  }
+  {
+    goPackagePath  = "github.com/gdamore/tcell";
+    fetch = {
+      type = "git";
+      url = "https://github.com/gdamore/tcell";
+      rev =  "b5d0c1ac570211e469f43ff88c0c6aa4b56cc99a";
+      sha256 = "0g2zfbgyk3djlk0qpmrgcyy0ba9ad932yswpaacswi21qyf9gwag";
+    };
+  }
+  {
+    goPackagePath  = "github.com/go-errors/errors";
+    fetch = {
+      type = "git";
+      url = "https://github.com/go-errors/errors";
+      rev =  "a6af135bd4e28680facf08a3d206b454abc877a4";
+      sha256 = "0rznpknk19rxkr7li6dqs52c26pjazp69lh493l4ny4sxn5922lp";
+    };
+  }
+  {
+    goPackagePath  = "github.com/gorilla/websocket";
+    fetch = {
+      type = "git";
+      url = "https://github.com/gorilla/websocket";
+      rev =  "66b9c49e59c6c48f0ffce28c2d8b8a5678502c6d";
+      sha256 = "00i4vb31nsfkzzk7swvx3i75r2d960js3dri1875vypk3v2s0pzk";
+    };
+  }
+  {
+    goPackagePath  = "github.com/hashicorp/hcl";
+    fetch = {
+      type = "git";
+      url = "https://github.com/hashicorp/hcl";
+      rev =  "8cb6e5b959231cc1119e43259c4a608f9c51a241";
+      sha256 = "0q6ml0qqs0yil76mpn4mdx4lp94id8vbv575qm60jzl1ijcl5i66";
+    };
+  }
+  {
+    goPackagePath  = "github.com/hpcloud/tail";
+    fetch = {
+      type = "git";
+      url = "https://github.com/hpcloud/tail";
+      rev =  "a30252cb686a21eb2d0b98132633053ec2f7f1e5";
+      sha256 = "1njpzc0pi1acg5zx9y6vj9xi6ksbsc5d387rd6904hy6rh2m6kn0";
+    };
+  }
+  {
+    goPackagePath  = "github.com/lucasb-eyer/go-colorful";
+    fetch = {
+      type = "git";
+      url = "https://github.com/lucasb-eyer/go-colorful";
+      rev =  "30298f24079860c4dee452fdef6519b362a4a026";
+      sha256 = "0fig06880bvk1l92j4127v4x9sar4ds7ga8959gxxghb2w70b7l2";
+    };
+  }
+  {
+    goPackagePath  = "github.com/magiconair/properties";
+    fetch = {
+      type = "git";
+      url = "https://github.com/magiconair/properties";
+      rev =  "de8848e004dd33dc07a2947b3d76f618a7fc7ef1";
+      sha256 = "19zqw1x0w0crh8zc84yy82nkcc5yjz72gviaf2xjgfm5a8np7nyb";
+    };
+  }
+  {
+    goPackagePath  = "github.com/mattn/go-runewidth";
+    fetch = {
+      type = "git";
+      url = "https://github.com/mattn/go-runewidth";
+      rev =  "3ee7d812e62a0804a7d0a324e0249ca2db3476d3";
+      sha256 = "00b3ssm7wiqln3k54z2wcnxr3k3c7m1ybyhb9h8ixzbzspld0qzs";
+    };
+  }
+  {
+    goPackagePath  = "github.com/mitchellh/mapstructure";
+    fetch = {
+      type = "git";
+      url = "https://github.com/mitchellh/mapstructure";
+      rev =  "3536a929edddb9a5b34bd6861dc4a9647cb459fe";
+      sha256 = "03bpv28jz9zhn4947saqwi328ydj7f6g6pf1m2d4m5zdh5jlfkrr";
+    };
+  }
+  {
+    goPackagePath  = "github.com/onsi/ginkgo";
+    fetch = {
+      type = "git";
+      url = "https://github.com/onsi/ginkgo";
+      rev =  "eea6ad008b96acdaa524f5b409513bf062b500ad";
+      sha256 = "1326s5fxgasdpz1qqwrw4n5p3k0vz44msnyz14knrhlw5l97lx33";
+    };
+  }
+  {
+    goPackagePath  = "github.com/onsi/gomega";
+    fetch = {
+      type = "git";
+      url = "https://github.com/onsi/gomega";
+      rev =  "90e289841c1ed79b7a598a7cd9959750cb5e89e2";
+      sha256 = "1n7i4hksdgv410m43v2sw14bl5vy59dkp6nlw5l76nibbh37syr9";
+    };
+  }
+  {
+    goPackagePath  = "github.com/pelletier/go-toml";
+    fetch = {
+      type = "git";
+      url = "https://github.com/pelletier/go-toml";
+      rev =  "728039f679cbcd4f6a54e080d2219a4c4928c546";
+      sha256 = "1v76s3vds0i9dxaha4ikd6xjm7vqqfk6sy9l6jc2lsvmj99d5sy6";
+    };
+  }
+  {
+    goPackagePath  = "github.com/pkg/errors";
+    fetch = {
+      type = "git";
+      url = "https://github.com/pkg/errors";
+      rev =  "ba968bfe8b2f7e042a574c888954fccecfa385b4";
+      sha256 = "0g5qcb4d4fd96midz0zdk8b9kz8xkzwfa8kr1cliqbg8sxsy5vd1";
+    };
+  }
+  {
+    goPackagePath  = "github.com/shibukawa/configdir";
+    fetch = {
+      type = "git";
+      url = "https://github.com/shibukawa/configdir";
+      rev =  "e180dbdc8da04c4fa04272e875ce64949f38bd3e";
+      sha256 = "0vbma9jkwh0ifz8dk2ssgmy7aiaify63lpa0lah7i4dkkxr94c9z";
+    };
+  }
+  {
+    goPackagePath  = "github.com/spf13/afero";
+    fetch = {
+      type = "git";
+      url = "https://github.com/spf13/afero";
+      rev =  "588a75ec4f32903aa5e39a2619ba6a4631e28424";
+      sha256 = "0j9r65qgd58324m85lkl49vk9dgwd62g7dwvkfcm3k6i9dc555a9";
+    };
+  }
+  {
+    goPackagePath  = "github.com/spf13/cast";
+    fetch = {
+      type = "git";
+      url = "https://github.com/spf13/cast";
+      rev =  "8c9545af88b134710ab1cd196795e7f2388358d7";
+      sha256 = "0xq1ffqj8y8h7dcnm0m9lfrh0ga7pssnn2c1dnr09chqbpn4bdc5";
+    };
+  }
+  {
+    goPackagePath  = "github.com/spf13/jwalterweatherman";
+    fetch = {
+      type = "git";
+      url = "https://github.com/spf13/jwalterweatherman";
+      rev =  "94f6ae3ed3bceceafa716478c5fbf8d29ca601a1";
+      sha256 = "1ywmkwci5zyd88ijym6f30fj5c0k2yayxarkmnazf5ybljv50q7b";
+    };
+  }
+  {
+    goPackagePath  = "github.com/spf13/pflag";
+    fetch = {
+      type = "git";
+      url = "https://github.com/spf13/pflag";
+      rev =  "298182f68c66c05229eb03ac171abe6e309ee79a";
+      sha256 = "1cj3cjm7d3zk0mf1xdybh0jywkbbw7a6yr3y22x9sis31scprswd";
+    };
+  }
+  {
+    goPackagePath  = "github.com/spf13/viper";
+    fetch = {
+      type = "git";
+      url = "https://github.com/spf13/viper";
+      rev =  "b5bf975e5823809fb22c7644d008757f78a4259e";
+      sha256 = "1zpzxvn13wpvbblbbn73svaq39zgxfjqhci9d68g3qf309pcfy19";
+    };
+  }
+  {
+    goPackagePath  = "github.com/ulule/limiter";
+    fetch = {
+      type = "git";
+      url = "https://github.com/ulule/limiter";
+      rev =  "38b2a440be905c8be884fd5e114dc893a64e5d81";
+      sha256 = "0sbbfz9k3m2hf45cx7y7xshsr3rac495lks9ciwmnrzsnxfdh3l5";
+    };
+  }
+  {
+    goPackagePath  = "golang.org/x/net";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/net";
+      rev =  "461777fb6f67e8cb9d70cda16573678d085a74cf";
+      sha256 = "0sc0llch05q6h7nqgayi3sgismsznpnlsz4gh89y4klpymdcpbh2";
+    };
+  }
+  {
+    goPackagePath  = "golang.org/x/sys";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/sys";
+      rev =  "93c9922d18aeb82498a065f07aec7ad7fa60dfb7";
+      sha256 = "0hv96nwbv0li3nrv43ldfzmf12yrrbji2cf8n44iibv8ps5kfssx";
+    };
+  }
+  {
+    goPackagePath  = "golang.org/x/text";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/text";
+      rev =  "342b2e1fbaa52c93f31447ad2c6abc048c63e475";
+      sha256 = "0flv9idw0jm5nm8lx25xqanbkqgfiym6619w575p7nrdh0riqwqh";
+    };
+  }
+  {
+    goPackagePath  = "gopkg.in/fsnotify.v1";
+    fetch = {
+      type = "git";
+      url = "https://github.com/fsnotify/fsnotify";
+      rev =  "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9";
+      sha256 = "07va9crci0ijlivbb7q57d2rz9h27zgn2fsm60spjsqpdbvyrx4g";
+    };
+  }
+  {
+    goPackagePath  = "gopkg.in/tomb.v1";
+    fetch = {
+      type = "git";
+      url = "https://github.com/go-tomb/tomb";
+      rev =  "dd632973f1e7218eb1089048e0798ec9ae7dceb8";
+      sha256 = "1lqmq1ag7s4b3gc3ddvr792c5xb5k6sfn0cchr3i2s7f1c231zjv";
+    };
+  }
+  {
+    goPackagePath  = "gopkg.in/yaml.v2";
+    fetch = {
+      type = "git";
+      url = "https://github.com/go-yaml/yaml";
+      rev =  "51d6538a90f86fe93ac480b35f37b2be17fef232";
+      sha256 = "01wj12jzsdqlnidpyjssmj0r4yavlqy7dwrg7adqd8dicjc4ncsa";
+    };
+  }
+]
\ No newline at end of file
diff --git a/nixpkgs/pkgs/applications/networking/browsers/captive-browser/default.nix b/nixpkgs/pkgs/applications/networking/browsers/captive-browser/default.nix
new file mode 100644
index 000000000000..3ce04842c6e4
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/captive-browser/default.nix
@@ -0,0 +1,22 @@
+{ lib, fetchFromGitHub, buildGoPackage }:
+
+buildGoPackage rec {
+  name = "captive-browser";
+  version = "2019-04-16";
+  goPackagePath = name;
+
+  src = fetchFromGitHub {
+    owner  = "FiloSottile";
+    repo   = "captive-browser";
+    rev    = "08450562e58bf9564ee98ad64ef7b2800e53338f";
+    sha256 = "17icgjg7h0xm8g4yy38qjhsvlz9pmlmj9kydz01y2nyl0v02i648";
+  };
+
+  meta = with lib; {
+    description = "Dedicated Chrome instance to log into captive portals without messing with DNS settings";
+    homepage = "https://blog.filippo.io/captive-browser";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ volth ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/browser.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/browser.nix
new file mode 100644
index 000000000000..7c0609730c24
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/browser.nix
@@ -0,0 +1,94 @@
+{ stdenv, mkChromiumDerivation, channel, enableWideVine }:
+
+with stdenv.lib;
+
+mkChromiumDerivation (base: rec {
+  name = "chromium-browser";
+  packageName = "chromium";
+  buildTargets = [ "mksnapshot" "chrome_sandbox" "chrome" ];
+
+  outputs = ["out" "sandbox"];
+
+  sandboxExecutableName = "__chromium-suid-sandbox";
+
+  installPhase = ''
+    mkdir -p "$libExecPath"
+    cp -v "$buildPath/"*.pak "$buildPath/"*.bin "$libExecPath/"
+    cp -v "$buildPath/icudtl.dat" "$libExecPath/"
+    cp -vLR "$buildPath/locales" "$buildPath/resources" "$libExecPath/"
+    cp -v "$buildPath/chrome" "$libExecPath/$packageName"
+
+    # Swiftshader
+    # See https://stackoverflow.com/a/4264351/263061 for the find invocation.
+    if [ -n "$(find "$buildPath/swiftshader/" -maxdepth 1 -name '*.so' -print -quit)" ]; then
+      echo "Swiftshader files found; installing"
+      mkdir -p "$libExecPath/swiftshader"
+      cp -v "$buildPath/swiftshader/"*.so "$libExecPath/swiftshader/"
+    else
+      echo "Swiftshader files not found"
+    fi
+
+    mkdir -p "$sandbox/bin"
+    cp -v "$buildPath/chrome_sandbox" "$sandbox/bin/${sandboxExecutableName}"
+
+    mkdir -vp "$out/share/man/man1"
+    cp -v "$buildPath/chrome.1" "$out/share/man/man1/$packageName.1"
+
+    for icon_file in chrome/app/theme/chromium/product_logo_*[0-9].png; do
+      num_and_suffix="''${icon_file##*logo_}"
+      icon_size="''${num_and_suffix%.*}"
+      expr "$icon_size" : "^[0-9][0-9]*$" || continue
+      logo_output_prefix="$out/share/icons/hicolor"
+      logo_output_path="$logo_output_prefix/''${icon_size}x''${icon_size}/apps"
+      mkdir -vp "$logo_output_path"
+      cp -v "$icon_file" "$logo_output_path/$packageName.png"
+    done
+
+    # Install Desktop Entry
+    install -D chrome/installer/linux/common/desktop.template \
+      $out/share/applications/chromium-browser.desktop
+
+    substituteInPlace $out/share/applications/chromium-browser.desktop \
+      --replace "@@MENUNAME@@" "Chromium" \
+      --replace "@@PACKAGE@@" "chromium" \
+      --replace "Exec=/usr/bin/@@USR_BIN_SYMLINK_NAME@@" "Exec=chromium"
+
+    # Append more mime types to the end
+    sed -i '/^MimeType=/ s,$,x-scheme-handler/webcal;x-scheme-handler/mailto;x-scheme-handler/about;x-scheme-handler/unknown,' \
+      $out/share/applications/chromium-browser.desktop
+
+    # See https://github.com/NixOS/nixpkgs/issues/12433
+    sed -i \
+      -e '/\[Desktop Entry\]/a\' \
+      -e 'StartupWMClass=chromium-browser' \
+      $out/share/applications/chromium-browser.desktop
+  '';
+
+  passthru = { inherit sandboxExecutableName; };
+
+  requiredSystemFeatures = [ "big-parallel" ];
+
+  meta = {
+    description = "An open source web browser from Google";
+    longDescription = ''
+      Chromium is an open source web browser from Google that aims to build a
+      safer, faster, and more stable way for all Internet users to experience
+      the web. It has a minimalist user interface and provides the vast majority
+      of source code for Google Chrome (which has some additional features).
+    '';
+    homepage = "https://www.chromium.org/";
+    maintainers = with maintainers; [ bendlas thefloweringash primeos ];
+    # Overview of the maintainer roles:
+    # nixos-unstable:
+    # - TODO: Need a new maintainer for x86_64 [0]
+    # - @thefloweringash: aarch64
+    # - @primeos: Provisional maintainer (x86_64)
+    # Stable channel:
+    # - TODO (need someone to test backports [0])
+    # [0]: https://github.com/NixOS/nixpkgs/issues/78450
+    license = if enableWideVine then licenses.unfree else licenses.bsd3;
+    platforms = platforms.linux;
+    hydraPlatforms = if channel == "stable" then ["aarch64-linux" "x86_64-linux"] else [];
+    timeout = 172800; # 48 hours
+  };
+})
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/common.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/common.nix
new file mode 100644
index 000000000000..fdb8584f08e8
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/common.nix
@@ -0,0 +1,337 @@
+{ stdenv, llvmPackages, gnChromium, ninja, which, nodejs, fetchpatch, gnutar
+
+# default dependencies
+, bzip2, flac, speex, libopus
+, libevent, expat, libjpeg, snappy
+, libpng, libcap
+, xdg_utils, yasm, minizip, libwebp
+, libusb1, pciutils, nss, re2, zlib
+
+, python2Packages, perl, pkgconfig
+, nspr, systemd, kerberos
+, utillinux, alsaLib
+, bison, gperf
+, glib, gtk3, dbus-glib
+, glibc
+, libXScrnSaver, libXcursor, libXtst, libGLU, libGL
+, protobuf, speechd, libXdamage, cups
+, ffmpeg, libxslt, libxml2, at-spi2-core
+, jre
+
+# optional dependencies
+, libgcrypt ? null # gnomeSupport || cupsSupport
+, libva ? null # useVaapi
+, libdrm ? null, wayland ? null, mesa_drivers ? null, libxkbcommon ? null # useOzone
+
+# package customization
+, useOzone ? false
+, useVaapi ? !(useOzone || stdenv.isAarch64) # Built if supported, but disabled in the wrapper
+# VA-API TODOs:
+# - Ozone: M81 fails to build due to "ozone_platform_gbm = false"
+#   - Possible solutions: Write a patch to fix the build (wrong gn dependencies)
+#     or build with minigbm
+# - AArch64: Causes serious regressions (https://github.com/NixOS/nixpkgs/pull/85253#issuecomment-614405879)
+, gnomeSupport ? false, gnome ? null
+, gnomeKeyringSupport ? false, libgnome-keyring3 ? null
+, proprietaryCodecs ? true
+, cupsSupport ? true
+, pulseSupport ? false, libpulseaudio ? null
+
+, upstream-info
+}:
+
+buildFun:
+
+with stdenv.lib;
+
+# see http://www.linuxfromscratch.org/blfs/view/cvs/xsoft/chromium.html
+
+let
+  # The additional attributes for creating derivations based on the chromium
+  # source tree.
+  extraAttrs = buildFun base;
+
+  githubPatch = commit: sha256: fetchpatch {
+    url = "https://github.com/chromium/chromium/commit/${commit}.patch";
+    inherit sha256;
+  };
+
+  mkGnFlags =
+    let
+      # Serialize Nix types into GN types according to this document:
+      # https://chromium.googlesource.com/chromium/src/+/master/tools/gn/docs/language.md
+      mkGnString = value: "\"${escape ["\"" "$" "\\"] value}\"";
+      sanitize = value:
+        if value == true then "true"
+        else if value == false then "false"
+        else if isList value then "[${concatMapStringsSep ", " sanitize value}]"
+        else if isInt value then toString value
+        else if isString value then mkGnString value
+        else throw "Unsupported type for GN value `${value}'.";
+      toFlag = key: value: "${key}=${sanitize value}";
+    in attrs: concatStringsSep " " (attrValues (mapAttrs toFlag attrs));
+
+  gnSystemLibraries = [
+    "flac" "libwebp" "libxslt" "yasm" "opus" "snappy" "libpng"
+    # "zlib" # version 77 reports unresolved dependency on //third_party/zlib:zlib_config
+    # "libjpeg" # fails with multiple undefined references to chromium_jpeg_*
+    # "re2" # fails with linker errors
+    # "ffmpeg" # https://crbug.com/731766
+    # "harfbuzz-ng" # in versions over 63 harfbuzz and freetype are being built together
+                    # so we can't build with one from system and other from source
+  ];
+
+  opusWithCustomModes = libopus.override {
+    withCustomModes = true;
+  };
+
+  defaultDependencies = [
+    bzip2 flac speex opusWithCustomModes
+    libevent expat libjpeg snappy
+    libpng libcap
+    xdg_utils yasm minizip libwebp
+    libusb1 re2 zlib
+    ffmpeg libxslt libxml2
+    # harfbuzz # in versions over 63 harfbuzz and freetype are being built together
+               # so we can't build with one from system and other from source
+  ];
+
+  # build paths and release info
+  packageName = extraAttrs.packageName or extraAttrs.name;
+  buildType = "Release";
+  buildPath = "out/${buildType}";
+  libExecPath = "$out/libexec/${packageName}";
+
+  versionRange = min-version: upto-version:
+    let inherit (upstream-info) version;
+        result = versionAtLeast version min-version && versionOlder version upto-version;
+        stable-version = (import ./upstream-info.nix).stable.version;
+    in if versionAtLeast stable-version upto-version
+       then warn "chromium: stable version ${stable-version} is newer than a patchset bounded at ${upto-version}. You can safely delete it."
+            result
+       else result;
+
+  base = rec {
+    name = "${packageName}-unwrapped-${version}";
+    inherit (upstream-info) channel version;
+    inherit packageName buildType buildPath;
+
+    src = upstream-info.main;
+
+    nativeBuildInputs = [
+      ninja which python2Packages.python perl pkgconfig
+      python2Packages.ply python2Packages.jinja2 nodejs
+      gnutar
+    ] ++ optional (versionAtLeast version "83") python2Packages.setuptools;
+
+    buildInputs = defaultDependencies ++ [
+      nspr nss systemd
+      utillinux alsaLib
+      bison gperf kerberos
+      glib gtk3 dbus-glib
+      libXScrnSaver libXcursor libXtst libGLU libGL
+      pciutils protobuf speechd libXdamage at-spi2-core
+      jre
+    ] ++ optional useVaapi libva
+      ++ optional gnomeKeyringSupport libgnome-keyring3
+      ++ optionals gnomeSupport [ gnome.GConf libgcrypt ]
+      ++ optionals cupsSupport [ libgcrypt cups ]
+      ++ optional pulseSupport libpulseaudio
+      ++ optionals useOzone [ libdrm wayland mesa_drivers libxkbcommon ];
+
+    patches = [
+      ./patches/nix_plugin_paths_68.patch
+      ./patches/remove-webp-include-69.patch
+      ./patches/no-build-timestamps.patch
+      ./patches/widevine-79.patch
+      ./patches/dont-use-ANGLE-by-default.patch
+      # Unfortunately, chromium regularly breaks on major updates and
+      # then needs various patches backported in order to be compiled with GCC.
+      # Good sources for such patches and other hints:
+      # - https://gitweb.gentoo.org/repo/gentoo.git/plain/www-client/chromium/
+      # - https://git.archlinux.org/svntogit/packages.git/tree/trunk?h=packages/chromium
+      # - https://github.com/chromium/chromium/search?q=GCC&s=committer-date&type=Commits
+      #
+      # ++ optionals (channel == "dev") [ ( githubPatch "<patch>" "0000000000000000000000000000000000000000000000000000000000000000" ) ]
+      # ++ optional (versionRange "68" "72") ( githubPatch "<patch>" "0000000000000000000000000000000000000000000000000000000000000000" )
+    ] ++ optionals (useVaapi) ([ # Fixes for the VA-API build:
+      ./patches/enable-vdpau-support-for-nvidia.patch # https://aur.archlinux.org/cgit/aur.git/tree/vdpau-support.patch?h=chromium-vaapi
+      ./patches/enable-video-acceleration-on-linux.patch # Can be controlled at runtime (i.e. without rebuilding Chromium)
+    ] ++ optionals (versionRange "81" "82") [
+      (githubPatch "5b2ff215473e0526b5b24aeff4ad90d369b21c75" "0n00vh8wfpn2ay5fqsxcsx0zadnv7mihm72bcvnrfzh75nzbg902")
+      (githubPatch "98e343ab369e4262511b5fce547728e3e5eefba8" "00wwp653jk0k0yvix00vr7ymgck9dj7fxjwx4nc67ynn84dh6064")
+    ]);
+
+    postPatch = ''
+      # We want to be able to specify where the sandbox is via CHROME_DEVEL_SANDBOX
+      substituteInPlace sandbox/linux/suid/client/setuid_sandbox_host.cc \
+        --replace \
+          'return sandbox_binary;' \
+          'return base::FilePath(GetDevelSandboxPath());'
+
+      substituteInPlace services/audio/audio_sandbox_hook_linux.cc \
+        --replace \
+          '/usr/share/alsa/' \
+          '${alsaLib}/share/alsa/' \
+        --replace \
+          '/usr/lib/x86_64-linux-gnu/gconv/' \
+          '${glibc}/lib/gconv/' \
+        --replace \
+          '/usr/share/locale/' \
+          '${glibc}/share/locale/'
+
+      sed -i -e 's@"\(#!\)\?.*xdg-@"\1${xdg_utils}/bin/xdg-@' \
+        chrome/browser/shell_integration_linux.cc
+
+      sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${systemd.lib}/lib/\1!' \
+        device/udev_linux/udev?_loader.cc
+
+      sed -i -e '/libpci_loader.*Load/s!"\(libpci\.so\)!"${pciutils}/lib/\1!' \
+        gpu/config/gpu_info_collector_linux.cc
+
+      sed -i -re 's/([^:])\<(isnan *\()/\1std::\2/g' \
+        chrome/browser/ui/webui/engagement/site_engagement_ui.cc
+
+      sed -i -e '/#include/ {
+        i #include <algorithm>
+        :l; n; bl
+      }' gpu/config/gpu_control_list.cc
+
+      # Allow to put extensions into the system-path.
+      sed -i -e 's,/usr,/run/current-system/sw,' chrome/common/chrome_paths.cc
+
+      patchShebangs .
+      # use our own nodejs
+      mkdir -p third_party/node/linux/node-linux-x64/bin
+      ln -s $(which node) third_party/node/linux/node-linux-x64/bin/node
+
+      # remove unused third-party
+      # in third_party/crashpad third_party/zlib contains just a header-adapter
+      for lib in ${toString gnSystemLibraries}; do
+        find -type f -path "*third_party/$lib/*"     \
+            \! -path "*third_party/crashpad/crashpad/third_party/zlib/*"  \
+            \! -path "*third_party/$lib/chromium/*"  \
+            \! -path "*third_party/$lib/google/*"    \
+            \! -path "*base/third_party/icu/*"       \
+            \! -path "*base/third_party/libevent/*"  \
+            \! -regex '.*\.\(gn\|gni\|isolate\|py\)' \
+            -delete
+      done
+    '' + optionalString stdenv.isAarch64 ''
+      substituteInPlace build/toolchain/linux/BUILD.gn \
+        --replace 'toolprefix = "aarch64-linux-gnu-"' 'toolprefix = ""'
+    '' + optionalString stdenv.cc.isClang ''
+      mkdir -p third_party/llvm-build/Release+Asserts/bin
+      ln -s ${stdenv.cc}/bin/clang              third_party/llvm-build/Release+Asserts/bin/clang
+      ln -s ${stdenv.cc}/bin/clang++            third_party/llvm-build/Release+Asserts/bin/clang++
+      ln -s ${llvmPackages.llvm}/bin/llvm-ar    third_party/llvm-build/Release+Asserts/bin/llvm-ar
+    '';
+
+    gnFlags = mkGnFlags ({
+      linux_use_bundled_binutils = false;
+      use_lld = false;
+      use_gold = true;
+      gold_path = "${stdenv.cc}/bin";
+      is_debug = false;
+
+      proprietary_codecs = false;
+      use_sysroot = false;
+      use_gnome_keyring = gnomeKeyringSupport;
+      use_gio = gnomeSupport;
+      # ninja: error: '../../native_client/toolchain/linux_x86/pnacl_newlib/bin/x86_64-nacl-objcopy',
+      # needed by 'nacl_irt_x86_64.nexe', missing and no known rule to make it
+      enable_nacl = false;
+      # Enabling the Widevine component here doesn't affect whether we can
+      # redistribute the chromium package; the Widevine component is either
+      # added later in the wrapped -wv build or downloaded from Google.
+      enable_widevine = true;
+      use_cups = cupsSupport;
+
+      treat_warnings_as_errors = false;
+      is_clang = stdenv.cc.isClang;
+      clang_use_chrome_plugins = false;
+      blink_symbol_level = 0;
+      fieldtrial_testing_like_official_build = true;
+
+      # Google API keys, see:
+      #   http://www.chromium.org/developers/how-tos/api-keys
+      # Note: These are for NixOS/nixpkgs use ONLY. For your own distribution,
+      # please get your own set of keys.
+      google_api_key = "AIzaSyDGi15Zwl11UNe6Y-5XW_upsfyw31qwZPI";
+      google_default_client_id = "404761575300.apps.googleusercontent.com";
+      google_default_client_secret = "9rIFQjfnkykEmqb6FfjJQD1D";
+    } // optionalAttrs proprietaryCodecs {
+      # enable support for the H.264 codec
+      proprietary_codecs = true;
+      enable_hangout_services_extension = true;
+      ffmpeg_branding = "Chrome";
+    } // optionalAttrs useVaapi {
+      use_vaapi = true;
+    } // optionalAttrs pulseSupport {
+      use_pulseaudio = true;
+      link_pulseaudio = true;
+    } // optionalAttrs useOzone {
+      use_ozone = true;
+      ozone_platform_gbm = false;
+      use_xkbcommon = true;
+      use_glib = true;
+      use_gtk = true;
+      use_system_libwayland = true;
+      use_system_minigbm = true;
+      use_system_libdrm = true;
+      system_wayland_scanner_path = "${wayland}/bin/wayland-scanner";
+    } // (extraAttrs.gnFlags or {}));
+
+    configurePhase = ''
+      runHook preConfigure
+
+      # This is to ensure expansion of $out.
+      libExecPath="${libExecPath}"
+      python build/linux/unbundle/replace_gn_files.py \
+        --system-libraries ${toString gnSystemLibraries}
+      ${gnChromium}/bin/gn gen --args=${escapeShellArg gnFlags} out/Release | tee gn-gen-outputs.txt
+
+      # Fail if `gn gen` contains a WARNING.
+      grep -o WARNING gn-gen-outputs.txt && echo "Found gn WARNING, exiting nix build" && exit 1
+
+      runHook postConfigure
+    '';
+
+    # Don't spam warnings about unknown warning options. This is useful because
+    # our Clang is always older than Chromium's and the build logs have a size
+    # of approx. 25 MB without this option (and this saves e.g. 66 %).
+    NIX_CFLAGS_COMPILE = "-Wno-unknown-warning-option";
+
+    buildPhase = let
+      # Build paralelism: on Hydra the build was frequently running into memory
+      # exhaustion, and even other users might be running into similar issues.
+      # -j is halved to avoid memory problems, and -l is slightly increased
+      # so that the build gets slight preference before others
+      # (it will often be on "critical path" and at risk of timing out)
+      buildCommand = target: ''
+        ninja -C "${buildPath}"  \
+          -j$(( ($NIX_BUILD_CORES+1) / 2 )) -l$(( $NIX_BUILD_CORES+1 )) \
+          "${target}"
+        (
+          source chrome/installer/linux/common/installer.include
+          PACKAGE=$packageName
+          MENUNAME="Chromium"
+          process_template chrome/app/resources/manpage.1.in "${buildPath}/chrome.1"
+        )
+      '';
+      targets = extraAttrs.buildTargets or [];
+      commands = map buildCommand targets;
+    in concatStringsSep "\n" commands;
+
+    postFixup = ''
+      # Make sure that libGLESv2 is found by dlopen (if using EGL).
+      chromiumBinary="$libExecPath/$packageName"
+      origRpath="$(patchelf --print-rpath "$chromiumBinary")"
+      patchelf --set-rpath "${libGL}/lib:$origRpath" "$chromiumBinary"
+    '';
+  };
+
+# Remove some extraAttrs we supplied to the base attributes already.
+in stdenv.mkDerivation (base // removeAttrs extraAttrs [
+  "name" "gnFlags" "buildTargets"
+])
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/default.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/default.nix
new file mode 100644
index 000000000000..25ef76f331ba
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/default.nix
@@ -0,0 +1,211 @@
+{ newScope, config, stdenv, llvmPackages_9, llvmPackages_10
+, makeWrapper, ed
+, glib, gtk3, gnome3, gsettings-desktop-schemas, gn, fetchgit
+, libva ? null
+, gcc, nspr, nss, patchelfUnstable, runCommand
+, lib
+
+# package customization
+# Note: enable* flags should not require full rebuilds (i.e. only affect the wrapper)
+, channel ? "stable"
+, gnomeSupport ? false, gnome ? null
+, gnomeKeyringSupport ? false
+, proprietaryCodecs ? true
+, enablePepperFlash ? false
+, enableWideVine ? false
+, useVaapi ? false # Deprecated, use enableVaapi instead!
+, enableVaapi ? false # Disabled by default due to unofficial support and issues on radeon
+, useOzone ? false
+, cupsSupport ? true
+, pulseSupport ? config.pulseaudio or stdenv.isLinux
+, commandLineArgs ? ""
+}:
+
+let
+  llvmPackages = if channel != "stable"
+    then llvmPackages_10
+    else llvmPackages_9;
+  stdenv = llvmPackages.stdenv;
+
+  callPackage = newScope chromium;
+
+  chromium = {
+    inherit stdenv llvmPackages;
+
+    upstream-info = (callPackage ./update.nix {}).getChannel channel;
+
+    mkChromiumDerivation = callPackage ./common.nix ({
+      inherit gnome gnomeSupport gnomeKeyringSupport proprietaryCodecs cupsSupport pulseSupport useOzone;
+      gnChromium = gn;
+    } // lib.optionalAttrs (channel != "stable") {
+      # TODO: Remove after we can update gn for the stable channel (backward incompatible changes):
+      gnChromium = gn.overrideAttrs (oldAttrs: {
+        version = "2020-03-23";
+        src = fetchgit {
+          url = "https://gn.googlesource.com/gn";
+          rev = "5ed3c9cc67b090d5e311e4bd2aba072173e82db9";
+          sha256 = "00y2d35wvqmx9glaqhfb62wdgbfpwr77v0934nnvh9ks71vnsjqy";
+        };
+      });
+    });
+
+    browser = callPackage ./browser.nix { inherit channel enableWideVine; };
+
+    plugins = callPackage ./plugins.nix {
+      inherit enablePepperFlash;
+    };
+  };
+
+  mkrpath = p: "${lib.makeSearchPathOutput "lib" "lib64" p}:${lib.makeLibraryPath p}";
+  widevineCdm = let upstream-info = chromium.upstream-info; in stdenv.mkDerivation {
+    name = "chrome-widevine-cdm";
+
+    # The .deb file for Google Chrome
+    src = upstream-info.binary;
+
+    nativeBuildInputs = [ patchelfUnstable ];
+
+    phases = [ "unpackPhase" "patchPhase" "installPhase" "checkPhase" ];
+
+    unpackCmd = let
+      widevineCdmPath =
+        if upstream-info.channel == "stable" then
+          "./opt/google/chrome/WidevineCdm"
+        else if upstream-info.channel == "beta" then
+          "./opt/google/chrome-beta/WidevineCdm"
+        else if upstream-info.channel == "dev" then
+          "./opt/google/chrome-unstable/WidevineCdm"
+        else
+          throw "Unknown chromium channel.";
+    in ''
+      # Extract just WidevineCdm from upstream's .deb file
+      ar p "$src" data.tar.xz | tar xJ "${widevineCdmPath}"
+
+      # Move things around so that we don't have to reference a particular
+      # chrome-* directory later.
+      mv "${widevineCdmPath}" ./
+
+      # unpackCmd wants a single output directory; let it take WidevineCdm/
+      rm -rf opt
+    '';
+
+    doCheck = true;
+    checkPhase = ''
+      ! find -iname '*.so' -exec ldd {} + | grep 'not found'
+    '';
+
+    PATCH_RPATH = mkrpath [ gcc.cc glib nspr nss ];
+
+    patchPhase = ''
+      patchelf --set-rpath "$PATCH_RPATH" _platform_specific/linux_x64/libwidevinecdm.so
+    '';
+
+    installPhase = ''
+      mkdir -p $out/WidevineCdm
+      cp -a * $out/WidevineCdm/
+    '';
+
+    meta = {
+      platforms = [ "x86_64-linux" ];
+      license = lib.licenses.unfree;
+    };
+  };
+
+  suffix = if channel != "stable" then "-" + channel else "";
+
+  sandboxExecutableName = chromium.browser.passthru.sandboxExecutableName;
+
+  version = chromium.browser.version;
+
+  # We want users to be able to enableWideVine without rebuilding all of
+  # chromium, so we have a separate derivation here that copies chromium
+  # and adds the unfree WidevineCdm.
+  chromiumWV = let browser = chromium.browser; in if enableWideVine then
+    runCommand (browser.name + "-wv") { version = browser.version; }
+      ''
+        mkdir -p $out
+        cp -a ${browser}/* $out/
+        chmod u+w $out/libexec/chromium
+        cp -a ${widevineCdm}/WidevineCdm $out/libexec/chromium/
+      ''
+    else browser;
+
+  optionalVaapiFlags = if useVaapi # TODO: Remove after 20.09:
+    then throw ''
+      Chromium's useVaapi was replaced by enableVaapi and you don't need to pass
+      "--ignore-gpu-blacklist" anymore (also no rebuilds are required anymore).
+    '' else lib.optionalString
+      (!enableVaapi)
+      "--add-flags --disable-accelerated-video-decode --add-flags --disable-accelerated-video-encode";
+in stdenv.mkDerivation {
+  name = "chromium${suffix}-${version}";
+  inherit version;
+
+  buildInputs = [
+    makeWrapper ed
+
+    # needed for GSETTINGS_SCHEMAS_PATH
+    gsettings-desktop-schemas glib gtk3
+
+    # needed for XDG_ICON_DIRS
+    gnome3.adwaita-icon-theme
+  ];
+
+  outputs = ["out" "sandbox"];
+
+  buildCommand = let
+    browserBinary = "${chromiumWV}/libexec/chromium/chromium";
+    getWrapperFlags = plugin: "$(< \"${plugin}/nix-support/wrapper-flags\")";
+    libPath = stdenv.lib.makeLibraryPath [ libva ];
+
+  in with stdenv.lib; ''
+    mkdir -p "$out/bin"
+
+    eval makeWrapper "${browserBinary}" "$out/bin/chromium" \
+      --add-flags ${escapeShellArg (escapeShellArg commandLineArgs)} \
+      ${optionalVaapiFlags} \
+      ${concatMapStringsSep " " getWrapperFlags chromium.plugins.enabled}
+
+    ed -v -s "$out/bin/chromium" << EOF
+    2i
+
+    if [ -x "/run/wrappers/bin/${sandboxExecutableName}" ]
+    then
+      export CHROME_DEVEL_SANDBOX="/run/wrappers/bin/${sandboxExecutableName}"
+    else
+      export CHROME_DEVEL_SANDBOX="$sandbox/bin/${sandboxExecutableName}"
+    fi
+
+  '' + lib.optionalString (libPath != "") ''
+    # To avoid loading .so files from cwd, LD_LIBRARY_PATH here must not
+    # contain an empty section before or after a colon.
+    export LD_LIBRARY_PATH="\$LD_LIBRARY_PATH\''${LD_LIBRARY_PATH:+:}${libPath}"
+  '' + ''
+
+    # libredirect causes chromium to deadlock on startup
+    export LD_PRELOAD="\$(echo -n "\$LD_PRELOAD" | tr ':' '\n' | grep -v /lib/libredirect\\\\.so$ | tr '\n' ':')"
+
+    export XDG_DATA_DIRS=$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH\''${XDG_DATA_DIRS:+:}\$XDG_DATA_DIRS
+
+    .
+    w
+    EOF
+
+    ln -sv "${chromium.browser.sandbox}" "$sandbox"
+
+    ln -s "$out/bin/chromium" "$out/bin/chromium-browser"
+
+    mkdir -p "$out/share"
+    for f in '${chromium.browser}'/share/*; do # hello emacs */
+      ln -s -t "$out/share/" "$f"
+    done
+  '';
+
+  inherit (chromium.browser) packageName;
+  meta = chromium.browser.meta;
+  passthru = {
+    inherit (chromium) upstream-info browser;
+    mkDerivation = chromium.mkChromiumDerivation;
+    inherit sandboxExecutableName;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/dont-use-ANGLE-by-default.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/dont-use-ANGLE-by-default.patch
new file mode 100644
index 000000000000..9f14a304eb34
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/dont-use-ANGLE-by-default.patch
@@ -0,0 +1,26 @@
+A field trial currently enables the passthrough command decoder, which causes
+gl_factory.cc to try kGLImplementationEGLANGLE first, which causes Chromium to fail
+to load libGLESv2.so on NixOS.  It somehow does not try kGLImplementationDesktopGL,
+and so there is no GL support at all.
+
+Revert to using the validating command decoder, which prevents gl_factory.cc
+from touching allowed_impls, allowing it to successfully use kGLImplementationDesktopGL.
+
+diff --git a/ui/gl/gl_utils.cc b/ui/gl/gl_utils.cc
+index 697cbed5fe2d..8419bdb21a2f 100644
+--- a/ui/gl/gl_utils.cc
++++ b/ui/gl/gl_utils.cc
+@@ -71,9 +71,10 @@ bool UsePassthroughCommandDecoder(const base::CommandLine* command_line) {
+   } else if (switch_value == kCmdDecoderValidatingName) {
+     return false;
+   } else {
+-    // Unrecognized or missing switch, use the default.
+-    return base::FeatureList::IsEnabled(
+-        features::kDefaultPassthroughCommandDecoder);
++    // Ignore the field trial that enables it; disable it until
++    // gl_factory.cc kGLImplementationEGLANGLE issues are sorted
++    // out on NixOS.
++    return false;
+   }
+ }
+ }
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-vdpau-support-for-nvidia.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-vdpau-support-for-nvidia.patch
new file mode 100644
index 000000000000..b5372d1a2556
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-vdpau-support-for-nvidia.patch
@@ -0,0 +1,74 @@
+--- a/media/gpu/vaapi/vaapi_video_decode_accelerator.cc
++++ b/media/gpu/vaapi/vaapi_video_decode_accelerator.cc
+@@ -641,6 +641,7 @@ void VaapiVideoDecodeAccelerator::AssignPictureBuffers(
+   // |vpp_vaapi_wrapper_| for VaapiPicture to DownloadFromSurface() the VA's
+   // internal decoded frame.
+   if (buffer_allocation_mode_ != BufferAllocationMode::kNone &&
++      buffer_allocation_mode_ != BufferAllocationMode::kWrapVdpau &&
+       !vpp_vaapi_wrapper_) {
+     vpp_vaapi_wrapper_ = VaapiWrapper::Create(
+         VaapiWrapper::kVideoProcess, VAProfileNone,
+@@ -665,7 +666,8 @@ void VaapiVideoDecodeAccelerator::AssignPictureBuffers(
+     PictureBuffer buffer = buffers[i];
+     buffer.set_size(requested_pic_size_);
+     std::unique_ptr<VaapiPicture> picture = vaapi_picture_factory_->Create(
+-        (buffer_allocation_mode_ == BufferAllocationMode::kNone)
++        ((buffer_allocation_mode_ == BufferAllocationMode::kNone) ||
++         (buffer_allocation_mode_ == BufferAllocationMode::kWrapVdpau))
+             ? vaapi_wrapper_
+             : vpp_vaapi_wrapper_,
+         make_context_current_cb_, bind_image_cb_, buffer);
+@@ -1093,6 +1095,12 @@ VaapiVideoDecodeAccelerator::GetSupportedProfiles() {
+
+ VaapiVideoDecodeAccelerator::BufferAllocationMode
+ VaapiVideoDecodeAccelerator::DecideBufferAllocationMode() {
++  // NVIDIA blobs use VDPAU
++  if (VaapiWrapper::GetImplementationType() == VAImplementation::kNVIDIAVDPAU) {
++    LOG(INFO) << "VA-API driver on VDPAU backend";
++    return BufferAllocationMode::kWrapVdpau;
++  }
++
+   // TODO(crbug.com/912295): Enable a better BufferAllocationMode for IMPORT
+   // |output_mode_| as well.
+   if (output_mode_ == VideoDecodeAccelerator::Config::OutputMode::IMPORT)
+@@ -1105,7 +1113,7 @@ VaapiVideoDecodeAccelerator::DecideBufferAllocationMode() {
+   // depends on the bitstream and sometimes it's not enough to cover the amount
+   // of frames needed by the client pipeline (see b/133733739).
+   // TODO(crbug.com/911754): Enable for VP9 Profile 2.
+-  if (IsGeminiLakeOrLater() &&
++  if (false && IsGeminiLakeOrLater() &&
+       (profile_ == VP9PROFILE_PROFILE0 || profile_ == VP8PROFILE_ANY)) {
+     // Add one to the reference frames for the one being currently egressed, and
+     // an extra allocation for both |client_| and |decoder_|, see
+--- a/media/gpu/vaapi/vaapi_video_decode_accelerator.h
++++ b/media/gpu/vaapi/vaapi_video_decode_accelerator.h
+@@ -204,6 +204,7 @@ class MEDIA_GPU_EXPORT VaapiVideoDecodeAccelerator
+     // Using |client_|s provided PictureBuffers and as many internally
+     // allocated.
+     kNormal,
++    kWrapVdpau,
+   };
+
+   // Decides the concrete buffer allocation mode, depending on the hardware
+--- a/media/gpu/vaapi/vaapi_wrapper.cc
++++ b/media/gpu/vaapi/vaapi_wrapper.cc
+@@ -131,6 +131,9 @@ media::VAImplementation VendorStringToImplementationType(
+   } else if (base::StartsWith(va_vendor_string, "Intel iHD driver",
+                               base::CompareCase::SENSITIVE)) {
+     return media::VAImplementation::kIntelIHD;
++  } else if (base::StartsWith(va_vendor_string, "Splitted-Desktop Systems VDPAU",
++                              base::CompareCase::SENSITIVE)) {
++    return media::VAImplementation::kNVIDIAVDPAU;
+   }
+   return media::VAImplementation::kOther;
+ }
+--- a/media/gpu/vaapi/vaapi_wrapper.h
++++ b/media/gpu/vaapi/vaapi_wrapper.h
+@@ -79,6 +79,7 @@ enum class VAImplementation {
+   kIntelIHD,
+   kOther,
+   kInvalid,
++  kNVIDIAVDPAU,
+ };
+
+ // This class handles VA-API calls and ensures proper locking of VA-API calls
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-video-acceleration-on-linux.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-video-acceleration-on-linux.patch
new file mode 100644
index 000000000000..bd278633f67e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/enable-video-acceleration-on-linux.patch
@@ -0,0 +1,48 @@
+From b2144fd28e09cd52e7a88a62a9d9b54cf9922f9f Mon Sep 17 00:00:00 2001
+From: Michael Weiss <dev.primeos@gmail.com>
+Date: Tue, 14 Apr 2020 14:16:10 +0200
+Subject: [PATCH] Enable accelerated video decode on Linux
+
+This will enable accelerated video decode on Linux by default (i.e.
+without "--ignore-gpu-blacklist"), but on NixOS we'll provide
+"--disable-accelerated-video-decode" and
+"--disable-accelerated-video-encode" by default to avoid regressions
+(e.g. VA-API doesn't work properly for some radeon drivers).
+
+Video acceleration can then be enabled via:
+chromium.override { enableVaapi = true; }
+without rebuilding Chromium.
+---
+ gpu/config/software_rendering_list.json | 16 ----------------
+ 1 file changed, 16 deletions(-)
+
+diff --git a/gpu/config/software_rendering_list.json b/gpu/config/software_rendering_list.json
+index 22712bdbf38f..a06dd19a50e4 100644
+--- a/gpu/config/software_rendering_list.json
++++ b/gpu/config/software_rendering_list.json
+@@ -336,22 +336,6 @@
+       ]
+     },
+     {
+-      "id": 48,
+-      "description": "Accelerated video decode is unavailable on Linux",
+-      "cr_bugs": [137247, 1032907],
+-      "os": {
+-        "type": "linux"
+-      },
+-      "exceptions": [
+-        {
+-          "machine_model_name": ["Chromecast"]
+-        }
+-      ],
+-      "features": [
+-        "accelerated_video_decode"
+-      ]
+-    },
+-    {
+       "id": 50,
+       "description": "Disable VMware software renderer on older Mesa",
+       "cr_bugs": [145531, 332596, 571899, 629434],
+-- 
+2.11.0
+
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/nix_plugin_paths_68.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/nix_plugin_paths_68.patch
new file mode 100644
index 000000000000..e7aa4f1ea0ac
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/nix_plugin_paths_68.patch
@@ -0,0 +1,61 @@
+diff --git a/chrome/common/chrome_paths.cc b/chrome/common/chrome_paths.cc
+index f4e119d..d9775bd 100644
+--- a/chrome/common/chrome_paths.cc
++++ b/chrome/common/chrome_paths.cc
+@@ -68,21 +68,14 @@ static base::LazyInstance<base::FilePath>
+     g_invalid_specified_user_data_dir = LAZY_INSTANCE_INITIALIZER;
+ 
+ // Gets the path for internal plugins.
+-bool GetInternalPluginsDirectory(base::FilePath* result) {
+-#if defined(OS_MACOSX)
+-  // If called from Chrome, get internal plugins from a subdirectory of the
+-  // framework.
+-  if (base::mac::AmIBundled()) {
+-    *result = chrome::GetFrameworkBundlePath();
+-    DCHECK(!result->empty());
+-    *result = result->Append("Internet Plug-Ins");
+-    return true;
+-  }
+-  // In tests, just look in the module directory (below).
+-#endif
+-
+-  // The rest of the world expects plugins in the module directory.
+-  return base::PathService::Get(base::DIR_MODULE, result);
++bool GetInternalPluginsDirectory(base::FilePath* result,
++                                 const std::string& ident) {
++  std::string full_env = std::string("NIX_CHROMIUM_PLUGIN_PATH_") + ident;
++  const char* value = getenv(full_env.c_str());
++  if (value == NULL)
++      return base::PathService::Get(base::DIR_MODULE, result);
++  *result = base::FilePath(value);
++  return true;
+ }
+ 
+ // Gets the path for bundled implementations of components. Note that these
+@@ -272,7 +265,7 @@ bool PathProvider(int key, base::FilePath* result) {
+       create_dir = true;
+       break;
+     case chrome::DIR_INTERNAL_PLUGINS:
+-      if (!GetInternalPluginsDirectory(&cur))
++      if (!GetInternalPluginsDirectory(&cur, "ALL"))
+         return false;
+       break;
+     case chrome::DIR_COMPONENTS:
+@@ -280,7 +273,7 @@ bool PathProvider(int key, base::FilePath* result) {
+         return false;
+       break;
+     case chrome::DIR_PEPPER_FLASH_PLUGIN:
+-      if (!GetInternalPluginsDirectory(&cur))
++      if (!GetInternalPluginsDirectory(&cur, "PEPPERFLASH"))
+         return false;
+       cur = cur.Append(kPepperFlashBaseDirectory);
+       break;
+@@ -358,7 +351,7 @@ bool PathProvider(int key, base::FilePath* result) {
+         cur = cur.DirName();
+       }
+ #else
+-      if (!GetInternalPluginsDirectory(&cur))
++      if (!GetInternalPluginsDirectory(&cur, "PNACL"))
+         return false;
+ #endif
+       cur = cur.Append(FILE_PATH_LITERAL("pnacl"));
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/no-build-timestamps.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/no-build-timestamps.patch
new file mode 100644
index 000000000000..6b788f43d29c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/no-build-timestamps.patch
@@ -0,0 +1,17 @@
+--- chromium-70.0.3538.67/build/compute_build_timestamp.py.orig	2018-11-02 16:00:34.368933077 +0200
++++ chromium-70.0.3538.67/build/compute_build_timestamp.py	2018-11-08 04:06:21.658105129 +0200
+@@ -94,6 +94,14 @@
+       'build_type', help='The type of build', choices=('official', 'default'))
+   args = argument_parser.parse_args()
+ 
++  # I don't trust LASTCHANGE magic, and I definelly want something deterministic here
++  SOURCE_DATE_EPOCH = os.getenv("SOURCE_DATE_EPOCH", None)
++  if SOURCE_DATE_EPOCH is not None:
++    print(SOURCE_DATE_EPOCH)
++    return 0
++  else:
++    raise RuntimeError("SOURCE_DATE_EPOCH not set")
++
+   # The mtime of the revision in build/util/LASTCHANGE is stored in a file
+   # next to it. Read it, to get a deterministic time close to "now".
+   # That date is then modified as described at the top of the file so that
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/remove-webp-include-69.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/remove-webp-include-69.patch
new file mode 100644
index 000000000000..07572cf7ee94
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/remove-webp-include-69.patch
@@ -0,0 +1,11 @@
+--- a/third_party/blink/renderer/platform/image-encoders/image_encoder.cc
++++ b/third_party/blink/renderer/platform/image-encoders/image_encoder.cc
+@@ -13,7 +13,7 @@
+
+ #include "jpeglib.h"  // for JPEG_MAX_DIMENSION
+
+-#include "third_party/libwebp/src/webp/encode.h"  // for WEBP_MAX_DIMENSION
++#define WEBP_MAX_DIMENSION 16383
+
+ namespace blink {
+
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/widevine-79.patch b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/widevine-79.patch
new file mode 100644
index 000000000000..32f0ae2fb5e6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/patches/widevine-79.patch
@@ -0,0 +1,13 @@
+diff --git a/third_party/widevine/cdm/BUILD.gn b/third_party/widevine/cdm/BUILD.gn
+index ed0e2f5208b..5b431a030d5 100644
+--- a/third_party/widevine/cdm/BUILD.gn
++++ b/third_party/widevine/cdm/BUILD.gn
+@@ -14,7 +14,7 @@ buildflag_header("buildflags") {
+ 
+   flags = [
+     "ENABLE_WIDEVINE=$enable_widevine",
+-    "BUNDLE_WIDEVINE_CDM=$bundle_widevine_cdm",
++    "BUNDLE_WIDEVINE_CDM=true",
+     "ENABLE_WIDEVINE_CDM_COMPONENT=$enable_widevine_cdm_component",
+   ]
+ }
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/plugins.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/plugins.nix
new file mode 100644
index 000000000000..1dd9baa628ab
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/plugins.nix
@@ -0,0 +1,93 @@
+{ stdenv, gcc
+, jshon
+, glib
+, nspr
+, nss
+, fetchzip
+, patchelfUnstable
+, enablePepperFlash ? false
+
+, upstream-info
+}:
+
+with stdenv.lib;
+
+let
+  mkrpath = p: "${makeSearchPathOutput "lib" "lib64" p}:${makeLibraryPath p}";
+
+  # Generate a shell fragment that emits flags appended to the
+  # final makeWrapper call for wrapping the browser's main binary.
+  #
+  # Note that this is shell-escaped so that only the variable specified
+  # by the "output" attribute is substituted.
+  mkPluginInfo = { output ? "out", allowedVars ? [ output ]
+                 , flags ? [], envVars ? {}
+                 }: let
+    shSearch = ["'"] ++ map (var: "@${var}@") allowedVars;
+    shReplace = ["'\\''"] ++ map (var: "'\"\${${var}}\"'") allowedVars;
+    # We need to triple-escape "val":
+    #  * First because makeWrapper doesn't do any quoting of its arguments by
+    #    itself.
+    #  * Second because it's passed to the makeWrapper call separated by IFS but
+    #    not by the _real_ arguments, for example the Widevine plugin flags
+    #    contain spaces, so they would end up as separate arguments.
+    #  * Third in order to be correctly quoted for the "echo" call below.
+    shEsc = val: "'${replaceStrings ["'"] ["'\\''"] val}'";
+    mkSh = val: "'${replaceStrings shSearch shReplace (shEsc val)}'";
+    mkFlag = flag: ["--add-flags" (shEsc flag)];
+    mkEnvVar = key: val: ["--set" (shEsc key) (shEsc val)];
+    envList = mapAttrsToList mkEnvVar envVars;
+    quoted = map mkSh (flatten ((map mkFlag flags) ++ envList));
+  in ''
+    mkdir -p "''$${output}/nix-support"
+    echo ${toString quoted} > "''$${output}/nix-support/wrapper-flags"
+  '';
+
+  flash = stdenv.mkDerivation rec {
+    pname = "flashplayer-ppapi";
+    version = "32.0.0.363";
+
+    src = fetchzip {
+      url = "https://fpdownload.adobe.com/pub/flashplayer/pdc/${version}/flash_player_ppapi_linux.x86_64.tar.gz";
+      sha256 = "0znk8an892mykgbz56hyv3gz65vc9mhb3vn96c6bsvicwl1fn460";
+      stripRoot = false;
+    };
+
+    patchPhase = ''
+      chmod +x libpepflashplayer.so
+      patchelf --set-rpath "${mkrpath [ gcc.cc ]}" libpepflashplayer.so
+    '';
+
+    doCheck = true;
+    checkPhase = ''
+      ! find -iname '*.so' -exec ldd {} + | grep 'not found'
+    '';
+
+    installPhase = ''
+      flashVersion="$(
+        "${jshon}/bin/jshon" -F manifest.json -e version -u
+      )"
+
+      install -vD libpepflashplayer.so "$out/lib/libpepflashplayer.so"
+
+      ${mkPluginInfo {
+        allowedVars = [ "out" "flashVersion" ];
+        flags = [
+          "--ppapi-flash-path=@out@/lib/libpepflashplayer.so"
+          "--ppapi-flash-version=@flashVersion@"
+        ];
+      }}
+    '';
+
+    dontStrip = true;
+
+    meta = {
+      license = stdenv.lib.licenses.unfree;
+      maintainers = with stdenv.lib.maintainers; [ taku0 ];
+      platforms = platforms.x86_64;
+    };
+  };
+
+in {
+  enabled = optional enablePepperFlash flash;
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/update.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/update.nix
new file mode 100644
index 000000000000..6dff17c69ddb
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/update.nix
@@ -0,0 +1,271 @@
+let maybePkgs = import ../../../../../. {}; in
+
+{ stdenv     ? maybePkgs.stdenv
+, runCommand ? maybePkgs.runCommand
+, fetchurl   ? maybePkgs.fetchurl
+, writeText  ? maybePkgs.writeText
+, curl       ? maybePkgs.curl
+, cacert     ? maybePkgs.cacert
+, nix        ? maybePkgs.nix
+}:
+
+let
+  inherit (stdenv) lib;
+
+  sources = if builtins.pathExists ./upstream-info.nix
+            then import ./upstream-info.nix
+            else {};
+
+  bucketURL = "https://commondatastorage.googleapis.com/"
+            + "chromium-browser-official";
+
+  mkVerURL = version: "${bucketURL}/chromium-${version}.tar.xz";
+
+  debURL = "https://dl.google.com/linux/chrome/deb/pool/main/g";
+
+  getDebURL = channelName: version: arch: mirror: let
+    packageSuffix = if channelName == "dev" then "unstable" else channelName;
+    packageName = "google-chrome-${packageSuffix}";
+  in "${mirror}/${packageName}/${packageName}_${version}-1_${arch}.deb";
+
+  # Untrusted mirrors, don't try to update from them!
+  debMirrors = [
+    "http://95.31.35.30/chrome/pool/main/g"
+    "http://mirror.pcbeta.com/google/chrome/deb/pool/main/g"
+    "http://repo.fdzh.org/chrome/deb/pool/main/g"
+  ];
+
+in {
+  getChannel = channel: let
+    chanAttrs = builtins.getAttr channel sources;
+  in {
+    inherit channel;
+    inherit (chanAttrs) version;
+
+    main = fetchurl {
+      url = mkVerURL chanAttrs.version;
+      inherit (chanAttrs) sha256;
+    };
+
+    binary = fetchurl (let
+      mkUrls = arch: let
+        mkURLForMirror = getDebURL channel chanAttrs.version arch;
+      in map mkURLForMirror ([ debURL ] ++ debMirrors);
+    in if stdenv.is64bit && chanAttrs ? sha256bin64 then {
+      urls = mkUrls "amd64";
+      sha256 = chanAttrs.sha256bin64;
+    } else if !stdenv.is64bit && chanAttrs ? sha256bin32 then {
+      urls = mkUrls "i386";
+      sha256 = chanAttrs.sha256bin32;
+    } else throw "No Chrome plugins are available for your architecture.");
+  };
+
+  update = let
+    csv2nix = name: src: import (runCommand "${name}.nix" {
+      src = builtins.fetchurl src;
+    } ''
+      esc() { echo "\"$(echo "$1" | sed -e 's/"\\$/\\&/')\""; } # ohai emacs "
+      IFS=, read -r -a headings <<< "$(head -n1 "$src")"
+      echo "[" > "$out"
+      tail -n +2 "$src" | while IFS=, read -r -a line; do
+        echo "  {"
+        for idx in "''${!headings[@]}"; do
+          echo "    $(esc "''${headings[idx]}") = $(esc ''${line[$idx]});"
+        done
+        echo "  }"
+      done >> "$out"
+      echo "]" >> "$out"
+    '');
+
+    channels = lib.fold lib.recursiveUpdate {} (map (attrs: {
+      ${attrs.os}.${attrs.channel} = attrs // {
+        history = let
+          drvName = "omahaproxy-${attrs.os}.${attrs.channel}-info";
+          history = csv2nix drvName "http://omahaproxy.appspot.com/history";
+          cond = h: attrs.os == h.os && attrs.channel == h.channel
+                 && lib.versionOlder h.version attrs.current_version;
+          # Note that this is a *reverse* sort!
+          sorter = a: b: lib.versionOlder b.version a.version;
+          sorted = builtins.sort sorter (lib.filter cond history);
+        in map (lib.flip removeAttrs ["os" "channel"]) sorted;
+        version = attrs.current_version;
+      };
+    }) (csv2nix "omahaproxy-info" "http://omahaproxy.appspot.com/all?csv=1"));
+
+    /*
+      XXX: This is essentially the same as:
+
+        builtins.tryEval (builtins.fetchurl url)
+
+      ... except that tryEval on fetchurl isn't working and doesn't catch
+      errors for fetchurl, so we go for a different approach.
+
+      We only have fixed-output derivations that can have networking access, so
+      we abuse SHA1 and its weaknesses to forge a fixed-output derivation which
+      is not so fixed, because it emits different contents that have the same
+      SHA1 hash.
+
+      Using this method, we can distinguish whether the URL is available or
+      whether it's not based on the actual content.
+
+      So let's use tryEval as soon as it's working with fetchurl in Nix.
+    */
+    tryFetch = url: let
+      # SHA1 hash collisions from https://shattered.io/static/shattered.pdf:
+      collisions = runCommand "sha1-collisions" {
+        outputs = [ "out" "good" "bad" ];
+        base64 = ''
+          QlpoOTFBWSZTWbL5V5MABl///////9Pv///v////+/////HDdK739/677r+W3/75rUNr4
+          Aa/AAAAAAACgEVTRtQDQAaA0AAyGmjTQGmgAAANGgAaMIAYgGgAABo0AAAAAADQAIAGQ0
+          MgDIGmjQA0DRk0AaMQ0DQAGIANGgAAGRoNGQMRpo0GIGgBoGQAAIAGQ0MgDIGmjQA0DRk
+          0AaMQ0DQAGIANGgAAGRoNGQMRpo0GIGgBoGQAAIAGQ0MgDIGmjQA0DRk0AaMQ0DQAGIAN
+          GgAAGRoNGQMRpo0GIGgBoGQAAIAGQ0MgDIGmjQA0DRk0AaMQ0DQAGIANGgAAGRoNGQMRp
+          o0GIGgBoGQAABVTUExEZATTICnkxNR+p6E09JppoyamjGhkm0ammIyaekbUejU9JiGnqZ
+          qaaDxJ6m0JkZMQ2oaYmJ6gxqMyE2TUzJqfItligtJQJfYbl9Zy9QjQuB5mHQRdSSXCCTH
+          MgmSDYmdOoOmLTBJWiCpOhMQYpQlOYpJjn+wQUJSTCEpOMekaFaaNB6glCC0hKEJdHr6B
+          mUIHeph7YxS8WJYyGwgWnMTFJBDFSxSCCYljiEk7HZgJzJVDHJxMgY6tCEIIWgsKSlSZ0
+          S8GckoIIF+551Ro4RCw260VCEpWJSlpWx/PMrLyVoyhWMAneDilBcUIeZ1j6NCkus0qUC
+          Wnahhk5KT4GpWMh3vm2nJWjTL9Qg+84iExBJhNKpbV9tvEN265t3fu/TKkt4rXFTsV+Nc
+          upJXhOhOhJMQQktrqt4K8mSh9M2DAO2X7uXGVL9YQxUtzQmS7uBndL7M6R7vX869VxqPu
+          renSuHYNq1yTXOfNWLwgvKlRlFYqLCs6OChDp0HuTzCWscmGudLyqUuwVGG75nmyZhKpJ
+          yOE/pOZyHyrZxGM51DYIN+Jc8yVJgAykxKCEtW55MlfudLg3KG6TtozalunXrroSxUpVL
+          StWrWLFihMnVpkyZOrQnUrE6xq1CGtJlbAb5ShMbV1CZgqlKC0wCFCpMmUKSEkvFLaZC8
+          wHOCVAlvzaJQ/T+XLb5Dh5TNM67p6KZ4e4ZSGyVENx2O27LzrTIteAreTkMZpW95GS0CE
+          JYhMc4nToTJ0wQhKEyddaLb/rTqmgJSlkpnALxMhlNmuKEpkEkqhKUoEq3SoKUpIQcDgW
+          lC0rYahMmLuPQ0fHqZaF4v2W8IoJ2EhMhYmSw7qql27WJS+G4rUplToFi2rSv0NSrVvDU
+          pltQ8Lv6F8pXyxmFBSxiLSxglNC4uvXVKmAtusXy4YXGX1ixedEvXF1aX6t8adYnYCpC6
+          rW1ZzdZYlCCxKEv8vpbqdSsXl8v1jCQv0KEPxPTa/5rtWSF1dSgg4z4KjfIMNtgwWoWLE
+          sRhKxsSA9ji7V5LRPwtumeQ8V57UtFSPIUmtQdOQfseI2Ly1DMtk4Jl8n927w34zrWG6P
+          i4jzC82js/46Rt2IZoadWxOtMInS2xYmcu8mOw9PLYxQ4bdfFw3ZPf/g2pzSwZDhGrZAl
+          9lqky0W+yeanadC037xk496t0Dq3ctfmqmjgie8ln9k6Q0K1krb3dK9el4Xsu44LpGcen
+          r2eQZ1s1IhOhnE56WnXf0BLWn9Xz15fMkzi4kpVxiTKGEpffErEEMvEeMZhUl6yD1SdeJ
+          YbxzGNM3ak2TAaglLZlDCVnoM6wV5DRrycwF8Zh/fRsdmhkMfAO1duwknrsFwrzePWeMw
+          l107DWzymxdQwiSXx/lncnn75jL9mUzw2bUDqj20LTgtawxK2SlQg1CCZDQMgSpEqLjRM
+          sykM9zbSIUqil0zNk7Nu+b5J0DKZlhl9CtpGKgX5uyp0idoJ3we9bSrY7PupnUL5eWiDp
+          V5mmnNUhOnYi8xyClkLbNmAXyoWk7GaVrM2umkbpqHDzDymiKjetgzTocWNsJ2E0zPcfh
+          t46J4ipaXGCfF7fuO0a70c82bvqo3HceIcRlshgu73seO8BqlLIap2z5jTOY+T2ucCnBt
+          Atva3aHdchJg9AJ5YdKHz7LoA3VKmeqxAlFyEnQLBxB2PAhAZ8KvmuR6ELXws1Qr13Nd1
+          i4nsp189jqvaNzt+0nEnIaniuP1+/UOZdyfoZh57ku8sYHKdvfW/jYSUks+0rK+qtte+p
+          y8jWL9cOJ0fV8rrH/t+85/p1z2N67p/ZsZ3JmdyliL7lrNxZUlx0MVIl6PxXOUuGOeArW
+          3vuEvJ2beoh7SGyZKHKbR2bBWO1d49JDIcVM6lQtu9UO8ec8pOnXmkcponBPLNM2CwZ9k
+          NC/4ct6rQkPkQHMcV/8XckU4UJCy+VeTA==
+        '';
+      } ''
+        echo "$base64" | base64 -d | tar xj
+        mv good.pdf "$good"
+        mv bad.pdf "$bad"
+        touch "$out"
+      '';
+
+      cacheVal = let
+        urlHash = builtins.hashString "sha256" url;
+        timeSlice = builtins.currentTime / 600;
+      in "${urlHash}-${toString timeSlice}";
+
+    in {
+      success = import (runCommand "check-success" {
+        result = stdenv.mkDerivation {
+          name = "tryfetch-${cacheVal}";
+          inherit url;
+
+          outputHash = "d00bbe65d80f6d53d5c15da7c6b4f0a655c5a86a";
+          outputHashMode = "flat";
+          outputHashAlgo = "sha1";
+
+          nativeBuildInputs = [ curl ];
+          preferLocalBuild = true;
+
+          inherit (collisions) good bad;
+
+          buildCommand = ''
+            if SSL_CERT_FILE="${cacert}/etc/ssl/certs/ca-bundle.crt" \
+               curl -s -L -f -I "$url" > /dev/null; then
+              cp "$good" "$out"
+            else
+              cp "$bad" "$out"
+            fi
+          '';
+
+          impureEnvVars = lib.fetchers.proxyImpureEnvVars;
+        };
+        inherit (collisions) good;
+      } ''
+        if cmp -s "$result" "$good"; then
+          echo true > "$out"
+        else
+          echo false > "$out"
+        fi
+      '');
+      value = builtins.fetchurl url;
+    };
+
+    fetchLatest = channel: let
+      result = tryFetch (mkVerURL channel.version);
+    in if result.success then result.value else fetchLatest (channel // {
+      version = if channel.history != []
+                then (lib.head channel.history).version
+                else throw "Unfortunately there's no older version than " +
+                           "${channel.version} available for channel " +
+                           "${channel.channel} on ${channel.os}.";
+      history = lib.tail channel.history;
+    });
+
+    getHash = path: import (runCommand "gethash.nix" {
+      inherit path;
+      nativeBuildInputs = [ nix ];
+    } ''
+      sha256="$(nix-hash --flat --base32 --type sha256 "$path")"
+      echo "\"$sha256\"" > "$out"
+    '');
+
+    isLatest = channel: version: let
+      ourVersion = sources.${channel}.version or null;
+    in if ourVersion == null then false
+       else lib.versionOlder version sources.${channel}.version
+         || version == sources.${channel}.version;
+
+    # We only support GNU/Linux right now.
+    linuxChannels = let
+      genLatest = channelName: channel: let
+        newUpstream = {
+          inherit (channel) version;
+          sha256 = getHash (fetchLatest channel);
+        };
+        keepOld = let
+          oldChannel = sources.${channelName};
+        in {
+          inherit (oldChannel) version sha256;
+        } // lib.optionalAttrs (oldChannel ? sha256bin32) {
+          inherit (oldChannel) sha256bin32;
+        } // lib.optionalAttrs (oldChannel ? sha256bin64) {
+          inherit (oldChannel) sha256bin64;
+        };
+      in if isLatest channelName channel.version then keepOld else newUpstream;
+    in lib.mapAttrs genLatest channels.linux;
+
+    getLinuxFlash = channelName: channel: let
+      inherit (channel) version;
+      fetchArch = arch: tryFetch (getDebURL channelName version arch debURL);
+      packages = lib.genAttrs ["i386" "amd64"] fetchArch;
+      isNew = arch: attr: !(builtins.hasAttr attr channel)
+                       && packages.${arch}.success;
+    in channel // lib.optionalAttrs (isNew "i386" "sha256bin32") {
+      sha256bin32 = getHash (packages.i386.value);
+    } // lib.optionalAttrs (isNew "amd64" "sha256bin64") {
+      sha256bin64 = getHash (packages.amd64.value);
+    };
+
+    newChannels = lib.mapAttrs getLinuxFlash linuxChannels;
+
+    dumpAttrs = indent: attrs: let
+      mkVal = val: if lib.isAttrs val then dumpAttrs (indent + 1) val
+                   else "\"${lib.escape ["$" "\\" "\""] (toString val)}\"";
+      mkIndent = level: lib.concatStrings (builtins.genList (_: "  ") level);
+      mkAttr = key: val: "${mkIndent (indent + 1)}${key} = ${mkVal val};\n";
+      attrLines = lib.mapAttrsToList mkAttr attrs;
+    in "{\n" + (lib.concatStrings attrLines) + (mkIndent indent) + "}";
+  in writeText "chromium-new-upstream-info.nix" ''
+    # This file is autogenerated from update.sh in the same directory.
+    ${dumpAttrs 0 newChannels}
+  '';
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/update.sh b/nixpkgs/pkgs/applications/networking/browsers/chromium/update.sh
new file mode 100755
index 000000000000..ea67a62c107a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/update.sh
@@ -0,0 +1,4 @@
+#!/bin/sh -e
+cd "$(dirname "$0")"
+sp="$(nix-build --builders "" -Q --no-out-link update.nix -A update)"
+cat "$sp" > upstream-info.nix
diff --git a/nixpkgs/pkgs/applications/networking/browsers/chromium/upstream-info.nix b/nixpkgs/pkgs/applications/networking/browsers/chromium/upstream-info.nix
new file mode 100644
index 000000000000..cf542faa8a1e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/chromium/upstream-info.nix
@@ -0,0 +1,18 @@
+# This file is autogenerated from update.sh in the same directory.
+{
+  beta = {
+    sha256 = "1s16wl101yabq0l7w0q50lxkr2gn090pcaj6l5sj6g5xvi9lhgbf";
+    sha256bin64 = "0k6fsqlpiwp9vds83hb3cg9xf74hqgbfdm3ijyad2rmwc5rqk0ax";
+    version = "83.0.4103.14";
+  };
+  dev = {
+    sha256 = "0djppzwzpfyyfjb1mhy5wws2379m3wpzyk2x3kw5nd0mdz35hbny";
+    sha256bin64 = "1wg55qhfvd5zvigjl6496za81mh9b2c5da53zy07bk8wj91ly8pf";
+    version = "84.0.4115.5";
+  };
+  stable = {
+    sha256 = "0hsxxw7fm1p8g53msqb644v8vr4cpvjmpln444c2268rm43yik17";
+    sha256bin64 = "0ap7flrw3h885454fa2r7psa4sh8567ql7v7x96q11gh9gjrdvp3";
+    version = "81.0.4044.113";
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/dillo/default.nix b/nixpkgs/pkgs/applications/networking/browsers/dillo/default.nix
new file mode 100644
index 000000000000..fa1fa76340c3
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/dillo/default.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchurl
+, fltk
+, openssl
+, libjpeg, libpng
+, perl
+, libXcursor, libXi, libXinerama }:
+
+stdenv.mkDerivation rec {
+  version = "3.0.5";
+  pname = "dillo";
+
+  src = fetchurl {
+    url = "https://www.dillo.org/download/${pname}-${version}.tar.bz2";
+    sha256 = "12ql8n1lypv3k5zqgwjxlw1md90ixz3ag6j1gghfnhjq3inf26yv";
+  };
+
+  buildInputs = with stdenv.lib;
+  [ perl fltk openssl libjpeg libpng libXcursor libXi libXinerama ];
+
+  configureFlags = [ "--enable-ssl" ];
+
+  meta = with stdenv.lib; {
+    homepage = "https://www.dillo.org/";
+    description = "A fast graphical web browser with a small footprint";
+    longDescription = ''
+      Dillo is a small, fast web browser, tailored for older machines.
+    '';
+    maintainers = [ maintainers.AndersonTorres ];
+    platforms = platforms.linux;
+    license = licenses.gpl3;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/elinks/default.nix b/nixpkgs/pkgs/applications/networking/browsers/elinks/default.nix
new file mode 100644
index 000000000000..985497a095cb
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/elinks/default.nix
@@ -0,0 +1,53 @@
+{ stdenv, fetchurl, ncurses, xlibsWrapper, bzip2, zlib, openssl
+, gpm
+, # Incompatible licenses, LGPLv3 - GPLv2
+  enableGuile        ? false,                                         guile ? null
+, enablePython       ? false,                                         python ? null
+, enablePerl         ? (stdenv.hostPlatform == stdenv.buildPlatform), perl ? null
+, enableSpidermonkey ? (stdenv.hostPlatform == stdenv.buildPlatform), spidermonkey ? null
+}:
+
+assert enableGuile -> guile != null;
+assert enablePython -> python != null;
+
+stdenv.mkDerivation {
+  name = "elinks-0.12pre6";
+
+  src = fetchurl {
+    url = "http://elinks.or.cz/download/elinks-0.12pre6.tar.bz2";
+    sha256 = "1nnakbi01g7yd3zqwprchh5yp45br8086b0kbbpmnclabcvlcdiq";
+  };
+
+  patches = [
+    ./gc-init.patch
+    ./openssl-1.1.patch
+  ];
+
+  buildInputs = [ ncurses xlibsWrapper bzip2 zlib openssl spidermonkey gpm ]
+    ++ stdenv.lib.optional enableGuile guile
+    ++ stdenv.lib.optional enablePython python
+    ++ stdenv.lib.optional enablePerl perl
+    ;
+
+  configureFlags = [
+    "--enable-finger"
+    "--enable-html-highlight"
+    "--enable-gopher"
+    "--enable-cgi"
+    "--enable-bittorrent"
+    "--enable-nntp"
+    "--with-openssl=${openssl.dev}"
+    "--with-bzip2=${bzip2.dev}"
+  ] ++ stdenv.lib.optional enableGuile        "--with-guile"
+    ++ stdenv.lib.optional enablePython       "--with-python"
+    ++ stdenv.lib.optional enablePerl         "--with-perl"
+    ++ stdenv.lib.optional enableSpidermonkey "--with-spidermonkey=${spidermonkey}"
+    ;
+
+  meta = {
+    description = "Full-featured text-mode web browser";
+    homepage = "http://elinks.or.cz";
+    license = stdenv.lib.licenses.gpl2;
+    platforms = stdenv.lib.platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/elinks/gc-init.patch b/nixpkgs/pkgs/applications/networking/browsers/elinks/gc-init.patch
new file mode 100644
index 000000000000..de06f563d6e6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/elinks/gc-init.patch
@@ -0,0 +1,17 @@
+Fix libgc initialization in the presence of Guile 2.0.
+
+--- elinks-0.12pre5/src/main/main.c	2009-07-07 14:23:17.000000000 +0200
++++ elinks-0.12pre5/src/main/main.c	2011-04-28 23:20:15.000000000 +0200
+@@ -339,6 +339,11 @@ int
+ main(int argc, char *argv[])
+ {
+ #ifdef CONFIG_GC
++	/* Guile 2.x uses libgc too and it initializes it this way, so we
++	 * must make sure to initialize it the same way, or it will just
++	 * segfault.  */
++	GC_all_interior_pointers = 0;
++
+ 	GC_INIT();
+ 	GC_set_warn_proc(gc_warning);
+ #endif
+
diff --git a/nixpkgs/pkgs/applications/networking/browsers/elinks/openssl-1.1.patch b/nixpkgs/pkgs/applications/networking/browsers/elinks/openssl-1.1.patch
new file mode 100644
index 000000000000..22792b6c0790
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/elinks/openssl-1.1.patch
@@ -0,0 +1,51 @@
+diff --git a/src/network/ssl/socket.c b/src/network/ssl/socket.c
+index 45b4b4a8..0385a431 100644
+--- a/src/network/ssl/socket.c
++++ b/src/network/ssl/socket.c
+@@ -67,7 +67,9 @@ static void
+ ssl_set_no_tls(struct socket *socket)
+ {
+ #ifdef CONFIG_OPENSSL
+-	((ssl_t *) socket->ssl)->options |= SSL_OP_NO_TLSv1;
++#ifdef SSL_OP_NO_TLSv1
++	SSL_set_options((ssl_t *)socket->ssl, SSL_OP_NO_TLSv1);
++#endif
+ #elif defined(CONFIG_GNUTLS)
+ 	{
+ 		/* GnuTLS does not support SSLv2 because it is "insecure".
+@@ -145,9 +147,11 @@ ssl_connect(struct socket *socket)
+ 		}
+ 
+ 		if (client_cert) {
+-			SSL_CTX *ctx = ((SSL *) socket->ssl)->ctx;
++			SSL_CTX *ctx = SSL_get_SSL_CTX((SSL *) socket->ssl);
+ 
+-			SSL_CTX_use_certificate_chain_file(ctx, client_cert);
++			SSL_CTX_use_certificate_chain_file(
++					(SSL *) socket->ssl,
++					client_cert);
+ 			SSL_CTX_use_PrivateKey_file(ctx, client_cert,
+ 						    SSL_FILETYPE_PEM);
+ 		}
+diff --git a/src/network/ssl/ssl.c b/src/network/ssl/ssl.c
+index c008121d..c06a80a7 100644
+--- a/src/network/ssl/ssl.c
++++ b/src/network/ssl/ssl.c
+@@ -50,11 +50,16 @@ init_openssl(struct module *module)
+ 	 * cannot initialize the PRNG and so every attempt to use SSL fails.
+ 	 * It's actually an OpenSSL FAQ, and according to them, it's up to the
+ 	 * application coders to seed the RNG. -- William Yodlowsky */
+-	if (RAND_egd(RAND_file_name(f_randfile, sizeof(f_randfile))) < 0) {
++	RAND_file_name(f_randfile, sizeof(f_randfile));
++#ifdef HAVE_RAND_EGD
++	if (RAND_egd(f_randfile) < 0) {
+ 		/* Not an EGD, so read and write to it */
++#endif
+ 		if (RAND_load_file(f_randfile, -1))
+ 			RAND_write_file(f_randfile);
++#ifdef HAVE_RAND_EGD
+ 	}
++#endif
+ 
+ 	SSLeay_add_ssl_algorithms();
+ 	context = SSL_CTX_new(SSLv23_client_method());
diff --git a/nixpkgs/pkgs/applications/networking/browsers/eolie/default.nix b/nixpkgs/pkgs/applications/networking/browsers/eolie/default.nix
new file mode 100644
index 000000000000..cfccacf1ae08
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/eolie/default.nix
@@ -0,0 +1,67 @@
+{ stdenv, fetchgit, meson, ninja, pkgconfig
+, python3, gtk3, libsecret, gst_all_1, webkitgtk
+, glib-networking, gtkspell3, hunspell, desktop-file-utils
+, gobject-introspection, wrapGAppsHook }:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "eolie";
+  version = "0.9.63";
+
+  format = "other";
+  doCheck = false;
+
+  src = fetchgit {
+    url = "https://gitlab.gnome.org/World/eolie";
+    rev = "refs/tags/${version}";
+    fetchSubmodules = true;
+    sha256 = "0z8gcfg7i842rr5p8r3vqa31kf7nnj1yv3afax3jzf4zbnhb8wm0";
+  };
+
+  nativeBuildInputs = [
+    desktop-file-utils
+    gobject-introspection
+    meson
+    ninja
+    pkgconfig
+    wrapGAppsHook
+  ];
+
+  buildInputs = with gst_all_1; [
+    glib-networking
+    gobject-introspection
+    gst-libav
+    gst-plugins-base
+    gst-plugins-ugly
+    gstreamer
+    gtk3
+    gtkspell3
+    hunspell
+    libsecret
+    webkitgtk
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    beautifulsoup4
+    pycairo
+    pygobject3
+    python-dateutil
+  ];
+
+  postPatch = ''
+    chmod +x meson_post_install.py
+    patchShebangs meson_post_install.py
+  '';
+
+  preFixup = ''
+    buildPythonPath "$out $propagatedBuildInputs"
+    patchPythonScript "$out/libexec/eolie-sp"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A new GNOME web browser";
+    homepage = "https://wiki.gnome.org/Apps/Eolie";
+    license  = licenses.gpl3Plus;
+    maintainers = with maintainers; [ samdroid-apps worldofpeace ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/ephemeral/default.nix b/nixpkgs/pkgs/applications/networking/browsers/ephemeral/default.nix
new file mode 100644
index 000000000000..53d0ffb4c193
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/ephemeral/default.nix
@@ -0,0 +1,70 @@
+{ stdenv
+, fetchFromGitHub
+, desktop-file-utils
+, vala
+, gettext
+, glib
+, gtk3
+, libgee
+, libdazzle
+, meson
+, ninja
+, pantheon
+, pkgconfig
+, python3
+, webkitgtk
+, wrapGAppsHook
+, glib-networking
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ephemeral";
+  version = "6.3.3";
+
+  src = fetchFromGitHub {
+    owner = "cassidyjames";
+    repo = "ephemeral";
+    rev = version;
+    sha256 = "093bqc40p4s8jc1s5rg49363x24vnwwjayvgzmi4xag28f1x6kn8";
+  };
+
+  nativeBuildInputs = [
+    desktop-file-utils
+    gettext
+    meson
+    ninja
+    vala
+    pkgconfig
+    python3
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    glib
+    glib-networking
+    gtk3
+    libdazzle
+    libgee
+    pantheon.granite
+    webkitgtk
+  ];
+
+  postPatch = ''
+    chmod +x meson/post_install.py
+    patchShebangs meson/post_install.py
+  '';
+
+  passthru = {
+    updateScript = pantheon.updateScript {
+      attrPath = pname;
+    };
+  };
+
+  meta = with stdenv.lib; {
+    description = "The always-incognito web browser";
+    homepage = "https://github.com/cassidyjames/ephemeral";
+    maintainers = with maintainers; [ kjuvi ] ++ pantheon.maintainers;
+    platforms = platforms.linux;
+    license = licenses.gpl3;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/falkon/default.nix b/nixpkgs/pkgs/applications/networking/browsers/falkon/default.nix
new file mode 100644
index 000000000000..954b45a2042b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/falkon/default.nix
@@ -0,0 +1,44 @@
+{ stdenv, mkDerivation, lib, fetchFromGitHub
+, cmake, extra-cmake-modules, pkgconfig, qmake
+, libpthreadstubs, libxcb, libXdmcp
+, qtsvg, qttools, qtwebengine, qtx11extras
+, qtwayland
+, kwallet
+}:
+
+mkDerivation rec {
+  pname = "falkon";
+  version = "3.1.0";
+
+  src = fetchFromGitHub {
+    owner  = "KDE";
+    repo   = "falkon";
+    rev    = "v${version}";
+    sha256 = "1w64slh9wpcfi4v7ds9wci1zvwh0dh787ndpi6hd4kmdgnswvsw7";
+  };
+
+  preConfigure = ''
+    export NONBLOCK_JS_DIALOGS=true
+    export KDE_INTEGRATION=true
+    export GNOME_INTEGRATION=false
+    export FALKON_PREFIX=$out
+  '';
+
+  buildInputs = [
+    libpthreadstubs libxcb libXdmcp
+    qtsvg qttools qtwebengine qtx11extras
+    kwallet
+  ] ++ lib.optionals stdenv.isLinux [ qtwayland ];
+
+  nativeBuildInputs = [ cmake extra-cmake-modules pkgconfig qmake qttools ];
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    description = "QtWebEngine based cross-platform web browser";
+    homepage    = "https://community.kde.org/Incubator/Projects/Falkon";
+    license     = licenses.gpl3;
+    maintainers = with maintainers; [ peterhoeg ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix
new file mode 100644
index 000000000000..0737bac48c79
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix
@@ -0,0 +1,965 @@
+{
+  version = "76.0b4";
+  sources = [
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/ach/firefox-76.0b4.tar.bz2";
+      locale = "ach";
+      arch = "linux-x86_64";
+      sha512 = "069dab2a91793ac9cdaa128473f706e194cf763df66ae448217cd7e5297857bb2d21ad198f9592bbe4831a2bbe9b76ec1ef96c288c4d8a85e35733ef0f75462f";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/af/firefox-76.0b4.tar.bz2";
+      locale = "af";
+      arch = "linux-x86_64";
+      sha512 = "bf1c4da2b03f95f241497e646d77ce5675f09dd8947def93983814c5bad257e38acc5c918faf7b758bf7293c09594baeac43ffaad814a47d3cbebcd5a49b4f4f";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/an/firefox-76.0b4.tar.bz2";
+      locale = "an";
+      arch = "linux-x86_64";
+      sha512 = "04bf37a16a65d453d1c9406196d095acd0087a0bfad0ffbb466afc2c99249f7a82899434a47343399db63c95d9c827a9a49b5c9eede2ad7bb7bcd91d82770fcf";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/ar/firefox-76.0b4.tar.bz2";
+      locale = "ar";
+      arch = "linux-x86_64";
+      sha512 = "71bcef558731031d1e38b370494be88dcd82299918a98c45be7fbec61ba5122ffcf3bbf4f2705c2e81cc133a888289c118511d8713ed722d99638a530d5d4da2";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/ast/firefox-76.0b4.tar.bz2";
+      locale = "ast";
+      arch = "linux-x86_64";
+      sha512 = "9f73a427c5a520fefd777d84aea6dfe50f2bd65f29e9acd16f0238ba5869e2c129872073c04769afab3ee973bfbcc6b50e204a53a8ca380a0e5d578557d59599";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/az/firefox-76.0b4.tar.bz2";
+      locale = "az";
+      arch = "linux-x86_64";
+      sha512 = "8717b342a6c49356017674c516b58415a21aa2a84fdf986c427f0dfc6af3944dae822728aca93184a10f5517202cf5e6ee49221485c64526edc0e083b0caae52";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/be/firefox-76.0b4.tar.bz2";
+      locale = "be";
+      arch = "linux-x86_64";
+      sha512 = "0bf61f3952c7b40e4950bfd294f5382da877eecc265bd9a1ea78135471b5802b69bc90361c6e286e2a2c7f5151a44c711c45f3d9b053324213ade49c79907b8b";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/bg/firefox-76.0b4.tar.bz2";
+      locale = "bg";
+      arch = "linux-x86_64";
+      sha512 = "de46cf916c7289f04590beab6ca3aecbcecb6ac65b7377206244e9cd41d0df8e68e6006ca49ae477ecabbb9b13c9b1df11c4cd732967b13aef3e9d0d708d2e3d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/bn/firefox-76.0b4.tar.bz2";
+      locale = "bn";
+      arch = "linux-x86_64";
+      sha512 = "46ae6e3ef632317f2f449223d64ebdea050c21f72a37fb27e5cff10d60f87cdb5d8b58de0e0d63e1a6f55ed0559eb5ef40a0768615a52dd5e2f2dee1e0bcf08c";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/br/firefox-76.0b4.tar.bz2";
+      locale = "br";
+      arch = "linux-x86_64";
+      sha512 = "f0652632fe303db805cc422ee010f968493377014865a3a80af13ea308c3eca7c9793172106064dc2f36ec2f8f3aa3e679f285975a431fc7de6aeca4373db67d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/bs/firefox-76.0b4.tar.bz2";
+      locale = "bs";
+      arch = "linux-x86_64";
+      sha512 = "31efa7360e56508f2b249d2789387bb8130a3db14843b87463dfb600ba3f37328fb86113c263dca3ceb30c620e889810194bd408220941ce9700dddea908e1f5";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/ca-valencia/firefox-76.0b4.tar.bz2";
+      locale = "ca-valencia";
+      arch = "linux-x86_64";
+      sha512 = "f6ddaa4f75bf434474da6f441c8caedaa77a53ecfef92532135a27c8e76f8acad7afc26b3549a2f753676533c0352227cdd875d952c1a720332cf9cf4dfbfbf4";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/ca/firefox-76.0b4.tar.bz2";
+      locale = "ca";
+      arch = "linux-x86_64";
+      sha512 = "4d58cd473798b52dfaa5fb4424f9ec57eb4e667c884808dd4fdceb851161ef3f3f72354588ce25eec24ff7ee671e7bdc1dfa7ef18c262540549ba34d8471ca42";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/cak/firefox-76.0b4.tar.bz2";
+      locale = "cak";
+      arch = "linux-x86_64";
+      sha512 = "5aa6d504cf97e0d446e8699bbc34b9e69632455b97c0427c1081d9083c200ef3a83472b95ee3804612e36d93f0d5992bcc4f8bade7eb132a30c313d2efd7a75a";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/cs/firefox-76.0b4.tar.bz2";
+      locale = "cs";
+      arch = "linux-x86_64";
+      sha512 = "c8ee077240afe3df4052f093e6a5f13ec2449f84863063483edd11b8c76ccd42a45cce2c627ef57d5b4e337f71a88e510efdea1fb1f0065fddc1390d4753ce12";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/cy/firefox-76.0b4.tar.bz2";
+      locale = "cy";
+      arch = "linux-x86_64";
+      sha512 = "b0352034fcfc9e2acbb546343ec2e8103f08b3c802289486611d694c07bd154d9bab7509e8a09134b44929ffb54a806ea4cf44a8d4b1ea506c23b84adee123ef";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/da/firefox-76.0b4.tar.bz2";
+      locale = "da";
+      arch = "linux-x86_64";
+      sha512 = "57bfa4d27ab78cdf9da4d04a4bd6a38873918bb800ccc1e49259c5d6753e9fdee0620795c96193c84938c126a94423d21ae12a3c998274474ff7b71b3da9e701";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/de/firefox-76.0b4.tar.bz2";
+      locale = "de";
+      arch = "linux-x86_64";
+      sha512 = "61cfd12448a01a71c98ef855ea9c54d105bde516d97e8e1d70e5008a3633c0a45c194a751f2a7884e0632c56d7ee830bfd1a0d9a07bcfd54606f7c37bf2b4b92";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/dsb/firefox-76.0b4.tar.bz2";
+      locale = "dsb";
+      arch = "linux-x86_64";
+      sha512 = "d6d3f08595f1675f181b40cc55f03009ccc212bfa733c341e51151e24089372a357a3a2851806eee708cc143a75a1d1a8d8a078fffa5988683945183f927f801";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/el/firefox-76.0b4.tar.bz2";
+      locale = "el";
+      arch = "linux-x86_64";
+      sha512 = "559c34cd79cb820f674d0aff9aec9e9cccc51ff7b1fcbd17ef95b9066e35880c5c980155d2ec6913e1d9ad3f9e25ff8757ce84e0b22beb21e893ab0bf30ddd5b";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/en-CA/firefox-76.0b4.tar.bz2";
+      locale = "en-CA";
+      arch = "linux-x86_64";
+      sha512 = "9f850ab71ab61eff4d2c9630cedbe42773982e1a8086a59723db64a01852a9ebf5ec90be7e315b9b7e142bc040eb2523b805eeab13b47a01ccd0978786d77fa4";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/en-GB/firefox-76.0b4.tar.bz2";
+      locale = "en-GB";
+      arch = "linux-x86_64";
+      sha512 = "134740c2c4efb9f014f42eb5002a4eddf8da67c62798f8c733623ec3f28a2ce7c2caad0e3b0f05fc5474148714c7394c53ba77953d4f5c56d1ad4aa8fd35c19d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-x86_64/en-US/firefox-76.0b4.tar.bz2";
+      locale = "en-US";
+      arch = "linux-x86_64";
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+      locale = "ro";
+      arch = "linux-i686";
+      sha512 = "e21c30b888b9a5cd8a1276abadf1cb7b61ef16aea1a2d14570649b887e6d4130e0e4d42bcbdb0e9f48760338c0cb2a8f52081cf6ed5163a4b7339923e5e13acf";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/ru/firefox-76.0b4.tar.bz2";
+      locale = "ru";
+      arch = "linux-i686";
+      sha512 = "6e8ebb45f4d0dc3b73c692db8e07032c62948d5a8ca6799d09087206a071db61c98cb883c85db0dfe1423f99383ef7efb613d5092fb0b295b9c3a24d29b60f6a";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/si/firefox-76.0b4.tar.bz2";
+      locale = "si";
+      arch = "linux-i686";
+      sha512 = "0d588d2befab1e7b23591f373b76083bfedca1ecc269c72f8d63a35e30d71db2a98c6b1ea18ed298909628800acd274ebc281c4d5e5399bec3f359f1f66e9bcd";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/sk/firefox-76.0b4.tar.bz2";
+      locale = "sk";
+      arch = "linux-i686";
+      sha512 = "f4fd28a6f9397290f7db17ad30078b51e743f7093351493eaa117b526893f5a8f8ef36f255b50503d2b48c4bb3fbb3071ed0b25ea687cab01b01379b6ad64e6d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/sl/firefox-76.0b4.tar.bz2";
+      locale = "sl";
+      arch = "linux-i686";
+      sha512 = "8d6218ee90b9a767e03acb9f6bce4602bb948377cf91cc81b0dbe2020b5dac0750f1e283913940c59e0ee1cc14a0ce1928338ea90695948e5ddc854244b62c47";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/son/firefox-76.0b4.tar.bz2";
+      locale = "son";
+      arch = "linux-i686";
+      sha512 = "4818470e713cb9b7209cf9b6b73fd2682ec9b017516f56570b83d1123e69921f7bf2f8c2ff8de36d622f0f93e1191e8671b00357864e1aa862ffeb7b88a90dc5";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/sq/firefox-76.0b4.tar.bz2";
+      locale = "sq";
+      arch = "linux-i686";
+      sha512 = "0ef59e995790814ca0ed50c2b510a1971ae802a1f362d2bb5a90e35687fae26aed9ba925c8e08bb68a7a0279a832132e2d66adb5dc1471a4a8e426cd4731d7aa";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/sr/firefox-76.0b4.tar.bz2";
+      locale = "sr";
+      arch = "linux-i686";
+      sha512 = "5387f446bb9a4e3edb89a3aa8f19bff7972c932cfba97b386bc07875354ed6585fe39873a3e9f74aa68ae13ca4d7a1e765e3185517c5a266072167069b037786";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/sv-SE/firefox-76.0b4.tar.bz2";
+      locale = "sv-SE";
+      arch = "linux-i686";
+      sha512 = "067f132d49fedf4e8dcc1401b39445b88a11aa5a7796ee24a06233540dd2b1ace5042dc06218f28bb6472716747dafedfa183b1db1e87d22ca5b865fa6f972eb";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/ta/firefox-76.0b4.tar.bz2";
+      locale = "ta";
+      arch = "linux-i686";
+      sha512 = "4016a1677a62dc4877dad75c0ec2f4d8dd5ed3aaaf625c73175fadae527d54f628bd29db2044f90c8be36e72b89422280e8030a231cda9db0f98c18d3fc037da";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/te/firefox-76.0b4.tar.bz2";
+      locale = "te";
+      arch = "linux-i686";
+      sha512 = "bd4a683f30e92fe9631506bfb2aaf726c6765044db65adb8d85795e60365684c7a9d2d351b7ae5b02125546dea8ffea6ec637a39e417bcd61acc57b8560068ee";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/th/firefox-76.0b4.tar.bz2";
+      locale = "th";
+      arch = "linux-i686";
+      sha512 = "1b10aa327fdb46c322af0848a66ca03ecff38fc29ada50fce6e44e9056a874275407bcc3959cc7668493a6de599e71644e6c4f57f83e031b18d4a88505b35f9f";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/tl/firefox-76.0b4.tar.bz2";
+      locale = "tl";
+      arch = "linux-i686";
+      sha512 = "febcf3fc454d7079bece7a9da0a9d158c15d0cd7a61058befb411d921e35f7d180773b2063c2084552cb6f7fda552430778f75875b474312878f72014ae9913a";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/tr/firefox-76.0b4.tar.bz2";
+      locale = "tr";
+      arch = "linux-i686";
+      sha512 = "a23a443245eadeb943858bde3cb5d824277b47365cab047904268f783ffe3e0f42c0809b0b083a428b1d16038ae24cfc873b545d9513e1449661b511d17313d2";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/trs/firefox-76.0b4.tar.bz2";
+      locale = "trs";
+      arch = "linux-i686";
+      sha512 = "c614aae0b803329d05aec5f60aec633d31353bed9822d9b8b7c5dff5d08fcbbc551aae480c02021abf0bdad1059b665e4ef627dc00ac5cab0380fa30111cb15d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/uk/firefox-76.0b4.tar.bz2";
+      locale = "uk";
+      arch = "linux-i686";
+      sha512 = "80bce7f860ed4d8921e9826d25f6d877879c3e4e3e3bf7bd8bf9ed4de4cc10cf72e42cb6323240f799a53ac6fc366ee7e1e6deb4b1c697f2444e97ab090ab9db";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/ur/firefox-76.0b4.tar.bz2";
+      locale = "ur";
+      arch = "linux-i686";
+      sha512 = "ac2d7c2ab3d26157feb78283a16e8d2195f78eabeeecb4ded60352fd423d8ff57f5e8a5fde72feaf32c3fece3a4e90c49d18d672ccff5775bc497e1c89b3fbea";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/uz/firefox-76.0b4.tar.bz2";
+      locale = "uz";
+      arch = "linux-i686";
+      sha512 = "a3cde7db978a3876b3ea596ae5b3e1aa1e77064f49686eb39bb083e4344cdda8366f01d37ceee4a007c1a36b4fd18499b2c46b2233f58b7efa8be4e59cc9e347";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/vi/firefox-76.0b4.tar.bz2";
+      locale = "vi";
+      arch = "linux-i686";
+      sha512 = "b76c01da5b4be1e39a3080ed2088bf6cad5e6f08364edae08a74c6b5ec07c35a214c47ef80b8bf5e3f4c53db6789e8eff1d6be22a1a75d408570fd9a9bf5140c";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/xh/firefox-76.0b4.tar.bz2";
+      locale = "xh";
+      arch = "linux-i686";
+      sha512 = "9175fe7659d000ed22cbbd8968146e57e0d8b39a112ce22f1bc18f553bca36c94c374f0f89d7b4743a521f654f2689e50ea4a4cf13ff320752c498e038abdbdf";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/zh-CN/firefox-76.0b4.tar.bz2";
+      locale = "zh-CN";
+      arch = "linux-i686";
+      sha512 = "0ffaffd4a316c36aeb75242902cf05bfd99143b6bbd67eed7bc6070ca4eb4328dcc7903f706fcf7e93e980d916b24d2041ecd5f7324b0bbe5e7ca2fb7b755574";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/76.0b4/linux-i686/zh-TW/firefox-76.0b4.tar.bz2";
+      locale = "zh-TW";
+      arch = "linux-i686";
+      sha512 = "ca46afa28f7e756718aa45e7d84fc5a14773671aa18edcc33b4c3e5ca68017a14a6f0d7b737ccfd098875c333c6d65b271a3521eecd3d4c64f535620f8c66346";
+    }
+    ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/default.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/default.nix
new file mode 100644
index 000000000000..71940c1b33ae
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/default.nix
@@ -0,0 +1,210 @@
+{ lib, stdenv, fetchurl, config, wrapGAppsHook
+, alsaLib
+, atk
+, cairo
+, curl
+, cups
+, dbus-glib
+, dbus
+, fontconfig
+, freetype
+, gconf
+, gdk-pixbuf
+, glib
+, glibc
+, gtk2
+, gtk3
+, kerberos
+, libX11
+, libXScrnSaver
+, libxcb
+, libXcomposite
+, libXcursor
+, libXdamage
+, libXext
+, libXfixes
+, libXi
+, libXinerama
+, libXrender
+, libXt
+, libcanberra-gtk2
+, libgnome
+, libgnomeui
+, libnotify
+, gnome3
+, libGLU, libGL
+, nspr
+, nss
+, pango
+, libheimdal
+, libpulseaudio
+, systemd
+, channel
+, generated
+, writeScript
+, writeText
+, xidel
+, coreutils
+, gnused
+, gnugrep
+, gnupg
+, ffmpeg
+, runtimeShell
+, systemLocale ? config.i18n.defaultLocale or "en-US"
+}:
+
+let
+
+  inherit (generated) version sources;
+
+  mozillaPlatforms = {
+    i686-linux = "linux-i686";
+    x86_64-linux = "linux-x86_64";
+  };
+
+  arch = mozillaPlatforms.${stdenv.hostPlatform.system};
+
+  isPrefixOf = prefix: string:
+    builtins.substring 0 (builtins.stringLength prefix) string == prefix;
+
+  sourceMatches = locale: source:
+      (isPrefixOf source.locale locale) && source.arch == arch;
+
+  policies = {
+    DisableAppUpdate = true;
+  };
+
+  policiesJson = writeText "no-update-firefox-policy.json" (builtins.toJSON { inherit policies; });
+
+  defaultSource = stdenv.lib.findFirst (sourceMatches "en-US") {} sources;
+
+  source = stdenv.lib.findFirst (sourceMatches systemLocale) defaultSource sources;
+
+  name = "firefox-${channel}-bin-unwrapped-${version}";
+
+in
+
+stdenv.mkDerivation {
+  inherit name;
+
+  src = fetchurl { inherit (source) url sha512; };
+
+  phases = [ "unpackPhase" "patchPhase" "installPhase" "fixupPhase" ];
+
+  libPath = stdenv.lib.makeLibraryPath
+    [ stdenv.cc.cc
+      alsaLib
+      (lib.getDev alsaLib)
+      atk
+      cairo
+      curl
+      cups
+      dbus-glib
+      dbus
+      fontconfig
+      freetype
+      gconf
+      gdk-pixbuf
+      glib
+      glibc
+      gtk2
+      gtk3
+      kerberos
+      libX11
+      libXScrnSaver
+      libXcomposite
+      libXcursor
+      libxcb
+      libXdamage
+      libXext
+      libXfixes
+      libXi
+      libXinerama
+      libXrender
+      libXt
+      libcanberra-gtk2
+      libgnome
+      libgnomeui
+      libnotify
+      libGLU libGL
+      nspr
+      nss
+      pango
+      libheimdal
+      libpulseaudio
+      (lib.getDev libpulseaudio)
+      systemd
+      ffmpeg
+    ] + ":" + stdenv.lib.makeSearchPathOutput "lib" "lib64" [
+      stdenv.cc.cc
+    ];
+
+  inherit gtk3;
+
+  buildInputs = [ wrapGAppsHook gtk3 gnome3.adwaita-icon-theme ];
+
+  # "strip" after "patchelf" may break binaries.
+  # See: https://github.com/NixOS/patchelf/issues/10
+  dontStrip = true;
+  dontPatchELF = true;
+
+  patchPhase = ''
+    # Don't download updates from Mozilla directly
+    echo 'pref("app.update.auto", "false");' >> defaults/pref/channel-prefs.js
+  '';
+
+  installPhase =
+    ''
+      mkdir -p "$prefix/usr/lib/firefox-bin-${version}"
+      cp -r * "$prefix/usr/lib/firefox-bin-${version}"
+
+      mkdir -p "$out/bin"
+      ln -s "$prefix/usr/lib/firefox-bin-${version}/firefox" "$out/bin/"
+
+      for executable in \
+        firefox firefox-bin plugin-container \
+        updater crashreporter webapprt-stub
+      do
+        if [ -e "$out/usr/lib/firefox-bin-${version}/$executable" ]; then
+          patchelf --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+            "$out/usr/lib/firefox-bin-${version}/$executable"
+        fi
+      done
+
+      find . -executable -type f -exec \
+        patchelf --set-rpath "$libPath" \
+          "$out/usr/lib/firefox-bin-${version}/{}" \;
+
+      # wrapFirefox expects "$out/lib" instead of "$out/usr/lib"
+      ln -s "$out/usr/lib" "$out/lib"
+
+      gappsWrapperArgs+=(--argv0 "$out/bin/.firefox-wrapped")
+
+      # See: https://github.com/mozilla/policy-templates/blob/master/README.md
+      mkdir -p "$out/lib/firefox-bin-${version}/distribution";
+      ln -s ${policiesJson} "$out/lib/firefox-bin-${version}/distribution/policies.json";
+    '';
+
+  passthru.execdir = "/bin";
+  passthru.ffmpegSupport = true;
+  passthru.gssSupport = true;
+  # update with:
+  # $ nix-shell maintainers/scripts/update.nix --argstr package firefox-bin-unwrapped
+  passthru.updateScript = import ./update.nix {
+    inherit name channel writeScript xidel coreutils gnused gnugrep gnupg curl runtimeShell;
+    baseUrl =
+      if channel == "devedition"
+        then "http://archive.mozilla.org/pub/devedition/releases/"
+        else "http://archive.mozilla.org/pub/firefox/releases/";
+  };
+  meta = with stdenv.lib; {
+    description = "Mozilla Firefox, free web browser (binary package)";
+    homepage = "http://www.mozilla.org/firefox/";
+    license = {
+      free = false;
+      url = "http://www.mozilla.org/en-US/foundation/trademarks/policy/";
+    };
+    platforms = builtins.attrNames mozillaPlatforms;
+    maintainers = with maintainers; [ taku0 ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
new file mode 100644
index 000000000000..f10bd8e9f39d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
@@ -0,0 +1,965 @@
+{
+  version = "76.0b4";
+  sources = [
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/ach/firefox-76.0b4.tar.bz2";
+      locale = "ach";
+      arch = "linux-x86_64";
+      sha512 = "9d76b71a20b9079513af70a082d6ab7373378e01b126cac5111437a040b08aaf3c78ad6d944cb27943043917be5d00ad90dd428ac3f2107754e2c96d5ec5c7cc";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/af/firefox-76.0b4.tar.bz2";
+      locale = "af";
+      arch = "linux-x86_64";
+      sha512 = "b498c1f6b56a65b66765173ac6c4568066facbf67b945d8e863a0d046cfdfda5e792acffaaffd1e7e5e5e5753b4a85ece8d19aa97d743340028346686a65cc7a";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/an/firefox-76.0b4.tar.bz2";
+      locale = "an";
+      arch = "linux-x86_64";
+      sha512 = "115e952394389af064117dc837d1f2ec157ced9aa35affc1d490e0a4860f36309c445a0e4781d0020420e2f4f3bdad18d078321b6bb760aaf2900273f5601e5b";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/ar/firefox-76.0b4.tar.bz2";
+      locale = "ar";
+      arch = "linux-x86_64";
+      sha512 = "cdebc4f71f304c930ee06c2048a142a1b610965059a3c2167882f6859446eb8af661c5d64011de3639144702b3b1936c1ef6af7eccaf7944fbbd7eda7161f569";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/ast/firefox-76.0b4.tar.bz2";
+      locale = "ast";
+      arch = "linux-x86_64";
+      sha512 = "6a96535466e06326f0577f045bdaf310d05a7f3878db940521bef58f60abef196cca038912145f25bd6879b55a693b6c98933d0045bfd5da58ff436cdcd1de6d";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/az/firefox-76.0b4.tar.bz2";
+      locale = "az";
+      arch = "linux-x86_64";
+      sha512 = "327cf4ba8de32044426d6ced1e250e03972e9a24705373a0c15e46c2f6c4994fc83cd1c67aacf09c2d11d9b665e63dba6176e845ef8c037241c55e9c536caa8a";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/be/firefox-76.0b4.tar.bz2";
+      locale = "be";
+      arch = "linux-x86_64";
+      sha512 = "9fa7311bf0425d7314298751553b49597b6eee71f9d251e52318f13e1d38d86adbfe1a1b6d599319d6f61de47652a5cfd33ef3f3ae9a2ee3f16af53629f0b85a";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/bg/firefox-76.0b4.tar.bz2";
+      locale = "bg";
+      arch = "linux-x86_64";
+      sha512 = "084fffbd48bad4fd38c649dd7ef5aaacfd5c86be4482a87f25c8e19ac6469e28897cf1ceeaed14cda55f40c77b08425a75ae3679d9866c255eaa8927a3c4e7e1";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/bn/firefox-76.0b4.tar.bz2";
+      locale = "bn";
+      arch = "linux-x86_64";
+      sha512 = "bd6d179e2ebc392bd8a2b5fc2b67d486150b00a4d881aa23c4d49ec2bbb7e8b8e9d70247bd704f608972af5ea3ffc5f53f949096a33455bb1fcb018acd4a0987";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/br/firefox-76.0b4.tar.bz2";
+      locale = "br";
+      arch = "linux-x86_64";
+      sha512 = "55d293e4f510229cc6545e41631db06987779f094020edf70093a38d1612d755334b59fc492f6b77ad3bb5e9996883231c0896d99ab83ffa418ea55b61cb76ee";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/bs/firefox-76.0b4.tar.bz2";
+      locale = "bs";
+      arch = "linux-x86_64";
+      sha512 = "b69e81c5b10411e7b391de4f9a3d3df4d183e4870b81ee3963bb663b85da2b955d2ea71ffa6246790a77cd2f512a1797bbe90f35d9da75b5d4bfe0c4e4209621";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/ca-valencia/firefox-76.0b4.tar.bz2";
+      locale = "ca-valencia";
+      arch = "linux-x86_64";
+      sha512 = "047cb7e2135ad93aa4d1378e9d48e8baaeac711aed823ae603f6d9431b90a8e46096948712f4fbaa6a80ae519ae7d75dcc5704305323c7eaa9c307cc688194fb";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/ca/firefox-76.0b4.tar.bz2";
+      locale = "ca";
+      arch = "linux-x86_64";
+      sha512 = "417dfb9a91902fd3bf7245accf6c48ce0dc1b9944376d5c73d38816e5b8c05ce214c1327f31773d5a72470a4b565b17f2469ed2f9d3fd6a7739699e19ac9bbd9";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-x86_64/cak/firefox-76.0b4.tar.bz2";
+      locale = "cak";
+      arch = "linux-x86_64";
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+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/nb-NO/firefox-76.0b4.tar.bz2";
+      locale = "nb-NO";
+      arch = "linux-i686";
+      sha512 = "9136a922d582db8871f72deaf308d6da711b931b20a491f139e4d7b4fa95de0b028814765b84632d485727fd6bb40732ae716582a38bac59d30f709a02070cb2";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/ne-NP/firefox-76.0b4.tar.bz2";
+      locale = "ne-NP";
+      arch = "linux-i686";
+      sha512 = "41c6d2f49c1e08f7ea647203f6d5b94f6b8b8c12edd181b5865e13234fcc47275dff9a553a2609fb107e5b0f3edf0a1fbb5cbede97716ecf48b7a83a51b5d4f0";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/nl/firefox-76.0b4.tar.bz2";
+      locale = "nl";
+      arch = "linux-i686";
+      sha512 = "3ca94e9cec360529bbde7cc8c713ce129e8cab654d2551babb91192485b04233932cac5e0256e2bcaa55fa34949116d1d207eb73acc41b1cb86a1231d939e880";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/nn-NO/firefox-76.0b4.tar.bz2";
+      locale = "nn-NO";
+      arch = "linux-i686";
+      sha512 = "2914d4488a847bccd7aa008d43a659d46cb06e377032c8d3496da32a2c13387b8dc33f21ca6345abe874a9c6c65464262ee4bbddc83dfaf6532ddbfd554e2b50";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/oc/firefox-76.0b4.tar.bz2";
+      locale = "oc";
+      arch = "linux-i686";
+      sha512 = "08e5e5b775b90684b6c275eeaf556eb4dc3e331db3f2807dca313273c4fddff37e31fa2ad36ed2dd7bd76e3ce5e7dac97a4bba85e7c4f07fce2d35bbb63e5759";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/pa-IN/firefox-76.0b4.tar.bz2";
+      locale = "pa-IN";
+      arch = "linux-i686";
+      sha512 = "10dcdcb6268a32b84ecdeaf4bed76ee78b9358e9e84f4fc8cf868f080a4425adf228116d03b440a48fd82d0808335c9632b0dc967a417bc44a5bea3edd79bbf6";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/pl/firefox-76.0b4.tar.bz2";
+      locale = "pl";
+      arch = "linux-i686";
+      sha512 = "7057c8e9a2b0b988d275041dcee47d0c6a2d23d765340e68846c66ca545ba6ee735d8d167ccbc57d8054f46bb4c074ccc22f88d51ade9492d6f904671be88367";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/pt-BR/firefox-76.0b4.tar.bz2";
+      locale = "pt-BR";
+      arch = "linux-i686";
+      sha512 = "e4f71f9cfcae8afb55757fb1873b5561bbfd110e9deb52b65244d5c7db48467ce035b663cf972f4fa976b52da1b945e551ced73366fb859c17beabc54b0f20c7";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/pt-PT/firefox-76.0b4.tar.bz2";
+      locale = "pt-PT";
+      arch = "linux-i686";
+      sha512 = "d48c432d4c84a1288f7a98654a95731978aadfb32dbef7e3464cd468abdb4153fc929edad4d4dab9b19bce7cdb8545d5987c7ded1b600fe181f044b3675c6b5e";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/rm/firefox-76.0b4.tar.bz2";
+      locale = "rm";
+      arch = "linux-i686";
+      sha512 = "b6231ff9e8cc373328210dcf5389590a2608c60fed17fde5a880412614213feb5066dd9c05cc0ae813f6af1701f4469586b255930449a11cd5bdae1c5ace54b9";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/ro/firefox-76.0b4.tar.bz2";
+      locale = "ro";
+      arch = "linux-i686";
+      sha512 = "919afe9f6850f39a61d825e2e7fb7ce109b3b942fbbfffcb8a9626b67dd9b5c7fbd6f43267c0b58b5fdd1f645366897ec15116eb21ddac93a48f7e3800bf0403";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/ru/firefox-76.0b4.tar.bz2";
+      locale = "ru";
+      arch = "linux-i686";
+      sha512 = "75612a4126aa52560e2cdc29b7c2fa1bd35fec34c9033f0ca276fb1239fe4dd50c1c4b024895c7aa8abb28435e58961adce4bf968922669dfd1abfbccddf40eb";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/si/firefox-76.0b4.tar.bz2";
+      locale = "si";
+      arch = "linux-i686";
+      sha512 = "e5f4c69e7656a198f831d693465ae2780d33f0692907ac4ae9781c0a307e8f7a654377af0d76eb9d63d120ac65bd147a858485b4e211f5c119bc92798bd917c6";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/sk/firefox-76.0b4.tar.bz2";
+      locale = "sk";
+      arch = "linux-i686";
+      sha512 = "547ee4c8ec75ad4ce583abde35a604c1b607dc7ce71cce1a955e4269fbb18dc20af756a07facb56fb194c2afda8170f4114511228dbe058c1126f932d6c94793";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/sl/firefox-76.0b4.tar.bz2";
+      locale = "sl";
+      arch = "linux-i686";
+      sha512 = "468cff45ebf0706887b01890431b7cbdcea6eca30fe86a2911de19160b8b068ab45a49801e28ea6413ece5fb6cad4c8bdd3601da2e237b8946bdacbd4e51b764";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/son/firefox-76.0b4.tar.bz2";
+      locale = "son";
+      arch = "linux-i686";
+      sha512 = "7daf5b95990a2a4386b04b0d11459e64cd3b101c57e18c514a28b28d1d62d797256b049f94809e423a8102269f7934b0074b2522109b2005c7bf317a705f5763";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/sq/firefox-76.0b4.tar.bz2";
+      locale = "sq";
+      arch = "linux-i686";
+      sha512 = "91b0e82ca4de76a5efe2a759f8325f784441c1fc118bca51b9ccf832f4866732dfa00b40c64c3cf767787ee5fbb11b9b09bc838c933c4ccf2d8472533cc1d07c";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/sr/firefox-76.0b4.tar.bz2";
+      locale = "sr";
+      arch = "linux-i686";
+      sha512 = "b41cbce7747ad6937c471f7f54d88e506a415dd6fa145979cdb88c07e1e929922b54ae9e61a674e47c120c9b53e2062d9b8c75b2cb84825fbb52dec2f2ef2751";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/sv-SE/firefox-76.0b4.tar.bz2";
+      locale = "sv-SE";
+      arch = "linux-i686";
+      sha512 = "902273fe8c9057b7d7778ac3b21b3230735d60ed3de6b48c9bb9554825c0e8f8131e7dd4a53aa4170f44220c25d64f23bf5f464402db9797a0d30c8bd3e388f0";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/ta/firefox-76.0b4.tar.bz2";
+      locale = "ta";
+      arch = "linux-i686";
+      sha512 = "4fac2fc24242045e01bb7fcff75238d2cf4ad85da11efadc0b4a180a402deeeab4f4eaf39f32118a5668c872569e67dcd2b86793bbaa57391cf8c860a7bee345";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/te/firefox-76.0b4.tar.bz2";
+      locale = "te";
+      arch = "linux-i686";
+      sha512 = "9c6eda370b7fffab80d3a4dc76f19a660f17ddd845251f99fa6bfa79ed5bd8bba601ba4bf07c108186423ade57358461756e82427e1f5db77807336d4eef62a2";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/th/firefox-76.0b4.tar.bz2";
+      locale = "th";
+      arch = "linux-i686";
+      sha512 = "38b01f7e48cee6ed453b48bf0924beff15755ff1b4870b625120bb82eb4a36825295b5f314ebac977b4ec1fc0be2f475ca8d288293526c856563829cfb5b52e3";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/tl/firefox-76.0b4.tar.bz2";
+      locale = "tl";
+      arch = "linux-i686";
+      sha512 = "a949c67154859aceacd77a2d090f1ef9e585eb11ec817f8b0ad19a5e661391fe24d33c4a996137ac5ed2c312bad833d07dd140aa8bb0cfc0d223dca8ed4b84bc";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/tr/firefox-76.0b4.tar.bz2";
+      locale = "tr";
+      arch = "linux-i686";
+      sha512 = "460430a84436bbafb814c722a66e228e3a9e6fb4b1e250a8cb5955ae43e7de604bdbf374db7788b6bd26e3f6e038d1fe88f250fe37b5a4798d5d8a03f85cd3d6";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/trs/firefox-76.0b4.tar.bz2";
+      locale = "trs";
+      arch = "linux-i686";
+      sha512 = "0ba10c70b32ec847e497d20cc8e872ea1b867a8d5c608df1568edbd15475d9eb4e53ce6e7a96e249a9e0835fbd18137d4fc69a5f29e81abd9c154acfdd0db398";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/uk/firefox-76.0b4.tar.bz2";
+      locale = "uk";
+      arch = "linux-i686";
+      sha512 = "f6fa0f31ac6007420f9e6ba01db67d98e380375aa3fd0cf12ebf94db157dc35d905b76f5ab6e0087fde825cddd8031da860a15c59f6747268b6547546f08e796";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/ur/firefox-76.0b4.tar.bz2";
+      locale = "ur";
+      arch = "linux-i686";
+      sha512 = "b723e0c609705f4ddb29e3d3349b0195520b842af7ca0a1ccc427da5d0a9dfeeb1b71f2570c5c877b1351886bec5d810ae8ce38525dd771b10f9923fc076de83";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/uz/firefox-76.0b4.tar.bz2";
+      locale = "uz";
+      arch = "linux-i686";
+      sha512 = "d0c085a5bb75e5f6d9e1950aba926d5e3b31af7ee96503fc8716091382ce9f85c9e9c6bde4c693034517299ed2a3c650026b0c811d969974de6b79db8f5e74d5";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/vi/firefox-76.0b4.tar.bz2";
+      locale = "vi";
+      arch = "linux-i686";
+      sha512 = "b5bb0ef8535422d83c24103e72a3fe619347f537230aa2f03b24ea8f29b726cd4fd5c94312466918a166ab8166df22403e3eb1c74a8aeea4bb3c71d4a378f755";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/xh/firefox-76.0b4.tar.bz2";
+      locale = "xh";
+      arch = "linux-i686";
+      sha512 = "3b8b91d953a1f62402d5c8d709ba7ae9d873acdc7a49604453bf862a223453f02b34bc2857e0e3744b608c41fcc906ec2f3771fe4510c9dc0cd5b6d0763e50bc";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/zh-CN/firefox-76.0b4.tar.bz2";
+      locale = "zh-CN";
+      arch = "linux-i686";
+      sha512 = "4446989a2531865b5266c7a5e4066a94399faba26f2349f92797bfad5fafccd658d0af57e2af4f62222b03818a8a57e7f2709d6f87dd97f9db419221c72199ef";
+    }
+    { url = "http://archive.mozilla.org/pub/devedition/releases/76.0b4/linux-i686/zh-TW/firefox-76.0b4.tar.bz2";
+      locale = "zh-TW";
+      arch = "linux-i686";
+      sha512 = "a77c23a6bc0844a43569e91b2725b580c8f542804f20d81164328e7bf84332513bca2ebf3b60f0d87f64c450e7dfc34e81d0147a449738c7b6754e0cd134790e";
+    }
+    ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/release_sources.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/release_sources.nix
new file mode 100644
index 000000000000..997d6d984050
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/release_sources.nix
@@ -0,0 +1,965 @@
+{
+  version = "75.0";
+  sources = [
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/ach/firefox-75.0.tar.bz2";
+      locale = "ach";
+      arch = "linux-x86_64";
+      sha512 = "654ce2cccf5b123e25509f71f4526f42052b3cd6eb79694de47f94363af4ab2b98b60d73020bf45c11d5aee9d0b3e246f72a7795cdf770f34a34f8c097d3cb5b";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/af/firefox-75.0.tar.bz2";
+      locale = "af";
+      arch = "linux-x86_64";
+      sha512 = "615b948a59066bf7503d66a3fd574fa6523f85765f7e7f84d3929a78ef82b4833be6e810eeb95e266e3609e943703e1c84a0f7a26a542fb5e8a8bb0fcf379065";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/an/firefox-75.0.tar.bz2";
+      locale = "an";
+      arch = "linux-x86_64";
+      sha512 = "070d250a2a22ae6b97efc618fb65fe93efe209b82aab53f9c13d20c3c8bf3fb9b84e209661d0322759a0dbed68e17c69ce6ef24a53d9dfd3186f1fd987e7c60c";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/ar/firefox-75.0.tar.bz2";
+      locale = "ar";
+      arch = "linux-x86_64";
+      sha512 = "36f7e51b0a1b7eb1c5df858cd0e90c301c162bb0413882dc3e64ed1240b4c81fde26eb0d9f7d813ce92c8bbae1e87a98e97d4a6360d765fb32ffdd84298f7f37";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/ast/firefox-75.0.tar.bz2";
+      locale = "ast";
+      arch = "linux-x86_64";
+      sha512 = "693cc4eedc5ec9a058ecb618ef70b322bc55b5a6159f480b219807940061ec22c92843fd288252ef30341dc1e42d0ad63586f5b9f438011726dc5fe88ad6037e";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/az/firefox-75.0.tar.bz2";
+      locale = "az";
+      arch = "linux-x86_64";
+      sha512 = "9d78aa451a95f5c26685b6065c93c77c7b3f14db6cbc57ceb0b868a30ce2a023d28063d4a14b5617f65c2ebcb6eab7d2ec6ba2eab0909e44ab3f25b2b69471df";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/be/firefox-75.0.tar.bz2";
+      locale = "be";
+      arch = "linux-x86_64";
+      sha512 = "6b898118e72cb2311d6230a2a151505c1927a35060bf703da6ce97a5d0735b06e56b163d5e5d4542931453923cf5e0afb9b527d2392e324a509da5185f2a2720";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/bg/firefox-75.0.tar.bz2";
+      locale = "bg";
+      arch = "linux-x86_64";
+      sha512 = "b9a12097e8312c099622c3f506c09507a9f3cb25e36f25967001c37f3840916f58c6693f272725ef3a35b22be916c3f4eea78b3bd0ea4a110647a0db53484cfd";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/bn/firefox-75.0.tar.bz2";
+      locale = "bn";
+      arch = "linux-x86_64";
+      sha512 = "b396e1e57c0e1cb7d554eb32ff4cd92db5458c5c232855bce42765aa2ab0d387ccd817f8a06624f84122f74dc1d5818992e9ca18138085a2f164ae3095485e14";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/br/firefox-75.0.tar.bz2";
+      locale = "br";
+      arch = "linux-x86_64";
+      sha512 = "3aa6fb9dc3300b38038873e5fb06e40f4e9adbf30aa6fc4f3cfa7ebc399bd94d3464081f304843e83d4478989874283a8ae1be5704d34f4e43b2a699aab31466";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/bs/firefox-75.0.tar.bz2";
+      locale = "bs";
+      arch = "linux-x86_64";
+      sha512 = "baf9e2909320fa15c70fc4a37e4e15a89726079d49d2a7edb72dcc4908b59cd8a8ae4917c1f4338063f5b85b119dfdd9c8d0480d71dd4fc45cca77ce465a3170";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/ca-valencia/firefox-75.0.tar.bz2";
+      locale = "ca-valencia";
+      arch = "linux-x86_64";
+      sha512 = "a3e16f4ef89e8ffa65981cee1ed53817dc2ed235f2f3f7b9ba035db92ccc58893b10f5719fa7c37a400bfb9da07309f788c142e36e5f7a91e286d7f0d9ec3092";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/ca/firefox-75.0.tar.bz2";
+      locale = "ca";
+      arch = "linux-x86_64";
+      sha512 = "a68a75844cf22ecccd407f0478bd38b3ed6f19cf8e6b32cef2c9e5e6d03eaa621b60be924a649c729b6cca3dbdeaf518f56676cb0bc295cb50ebb1038571e31b";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/cak/firefox-75.0.tar.bz2";
+      locale = "cak";
+      arch = "linux-x86_64";
+      sha512 = "5759039f87134d0a1653d8175c53a0aa8a71379cc4aad75831282956711e4fe485e62040c3325f24684e2d676fe4208ec4319aa959cb29c9682847b35906589d";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/cs/firefox-75.0.tar.bz2";
+      locale = "cs";
+      arch = "linux-x86_64";
+      sha512 = "dcb7a5c9b89c524e61f7a99a2926099cb7ba088c7fbce82f3e8450b00554efc587dd7c4b757b6567519f0ec928edf50fcfd438367c37b48a3bff7d1ef66b4d51";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/cy/firefox-75.0.tar.bz2";
+      locale = "cy";
+      arch = "linux-x86_64";
+      sha512 = "e788954f6ce821cc68afe9428c02823870533164b36123d7f7a9bce7a4d82392606d397713e8cf28b5360dc5897ca35bd3ff6aaaafbabb7fe5106462e8f687f2";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-x86_64/da/firefox-75.0.tar.bz2";
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+      sha512 = "519f9777303a5dc6eca8933406ff0ffbf7654c75305c16e13f1600550d924569ded9dc6ba606050c9bacc31ecbc0d6e43dd91dbe8cb3b587ab71d20467564cd5";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/pt-PT/firefox-75.0.tar.bz2";
+      locale = "pt-PT";
+      arch = "linux-i686";
+      sha512 = "92500d0b49090382e261baa0fdd4620e5d9e4a047c9c7098ad3f7ce34a5e97bde419a87019517125239144d21589b428c11138aec691328530fd41d5a78cc5db";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/rm/firefox-75.0.tar.bz2";
+      locale = "rm";
+      arch = "linux-i686";
+      sha512 = "6b8f3655d962612a047bb7d961ba74b362da0bcf740362e8f31a2263b0898da90e051951cf5894bd8a493f40d2d89fd50d6060eecc78908518f8611218a27eb3";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/ro/firefox-75.0.tar.bz2";
+      locale = "ro";
+      arch = "linux-i686";
+      sha512 = "4f2e2012136c9821792241f2189550843320b52c44905d9902c7ef3f2be21f26dd79f930b719f752d3d4b5e7ab6ca8429d12ba6120f6bc365bf9e2f496ea85e2";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/ru/firefox-75.0.tar.bz2";
+      locale = "ru";
+      arch = "linux-i686";
+      sha512 = "7ce2ab97b3483b9632d24a979bbe051d8db539329359f91dc9df4446db0b4c1201dcbc6422e1406400dd3df007e5c3af6bcc8279966cf7448671608cc05a4231";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/si/firefox-75.0.tar.bz2";
+      locale = "si";
+      arch = "linux-i686";
+      sha512 = "65edb310b0c94dbaa2f5ece2eb6593a4fa7d89b2fc9e4d3bd8c77bd43dd4517d09895a7a325b9d6a1b5fda965e9d6e3c10f7e4b889b582ad4aacc2061db6a443";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/sk/firefox-75.0.tar.bz2";
+      locale = "sk";
+      arch = "linux-i686";
+      sha512 = "4e29357906cafb6df7dfddb4c668479d8e52722a4771e043a1d9e0c254e434251768a716f7791c6969e34c5004f276d1b3ae8b8c77176bb1ba76409295126671";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/sl/firefox-75.0.tar.bz2";
+      locale = "sl";
+      arch = "linux-i686";
+      sha512 = "c84cdabcb498c6a387a08b7ead1cdadfb68c173a955e34f4118a4d56417918649b7ffab2eeb88ddfa276656367f8429e17ddad4b909b1f39e120e41d1caca56c";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/son/firefox-75.0.tar.bz2";
+      locale = "son";
+      arch = "linux-i686";
+      sha512 = "3fdf243217a00baef75aa36b9bcc257e1741fadc8070f5e50a4573c3c4b6b86eeb4405fab327b057e5d92543a0643429fc1159d3b77fe30ad918d8757d8970b1";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/sq/firefox-75.0.tar.bz2";
+      locale = "sq";
+      arch = "linux-i686";
+      sha512 = "f8c32ef45297c86935bc8b99a9d6b8e4804320f76e085e70f988def0ec003f221666e8f7e34e1866c52c38dc45a3b6a39397ac1e81a7033a74652a1d42d32355";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/sr/firefox-75.0.tar.bz2";
+      locale = "sr";
+      arch = "linux-i686";
+      sha512 = "10dfc0655723a00be5b5e32a280ffc660cf464df0be0686601b2bb502730ea5ee6f7c23c3f40616e9df3c5eb17638b841cc70e8b2271b442cc8b95927191dd62";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/sv-SE/firefox-75.0.tar.bz2";
+      locale = "sv-SE";
+      arch = "linux-i686";
+      sha512 = "57e77414cd484560716ef659271e28c14a8f02f7189bc858b4293a72ac07cb0acc77a6e719c25b7a9b76cd4da6b3b56df8a75236b6ddef0ace9f87113f4f8d72";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/ta/firefox-75.0.tar.bz2";
+      locale = "ta";
+      arch = "linux-i686";
+      sha512 = "396fe91815427866908619b33df4fcc503e0b30f03c567a9d4baa51bfae19d91de816cfbca4bd94a48447c7abdfb56d52a294ad0b8fff8134d935db9d6a81221";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/te/firefox-75.0.tar.bz2";
+      locale = "te";
+      arch = "linux-i686";
+      sha512 = "87237a320372b1c34c583335335b5b8e85eaf0dd774883b0b0c74e883854c1cd14d459cc8b84db2dade7dc92b36d176c8f30bd17658f6e5660660b0f167fc715";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/th/firefox-75.0.tar.bz2";
+      locale = "th";
+      arch = "linux-i686";
+      sha512 = "ca5ca4be8242e1fe9a9714b117965b67ebe86b578381ea4339f378dfe74e08f268b63346b5d3bcf30cf1c108a933609d8cbb393caa7f7646557d265c2b40decb";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/tl/firefox-75.0.tar.bz2";
+      locale = "tl";
+      arch = "linux-i686";
+      sha512 = "99322a06d7122438715b92f176b07203246c1e15a0a42dae4349f424232778f3d2b9bcd17a7b239b8eb6273a6ada8e259480601258275f16c567d9cee51fd16f";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/tr/firefox-75.0.tar.bz2";
+      locale = "tr";
+      arch = "linux-i686";
+      sha512 = "95a86989879b65c85032e9b8ffa9290d9a6fa1be409786b9782b284e4c0fb894719fc464ef7e6b96554e2cb852a3276a8e042bbff02a17bdb44aaf9ddc170361";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/trs/firefox-75.0.tar.bz2";
+      locale = "trs";
+      arch = "linux-i686";
+      sha512 = "aae0652f74e82b0cdd752cb8f0747fd4f36f04fcdc50c3cd9d084c6418694cd3015e8de87d851605f5cac0b0159ddd8f9521755d81adbee0e561926b2ea1d393";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/uk/firefox-75.0.tar.bz2";
+      locale = "uk";
+      arch = "linux-i686";
+      sha512 = "df038e62ba6284245212f23c5458b2df14547ed532ba66adfed2297041ae7acf693a6e01a6af9c16f4a2e141806d9baf3c4fce91bf3316e635da7211ba9b057f";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/ur/firefox-75.0.tar.bz2";
+      locale = "ur";
+      arch = "linux-i686";
+      sha512 = "1bcc2f2e8f5e389c29fd0e7f4a5a376d91268e326758b396c9d829e59d1315a52df0449fe49e81170713f1161946c2ed224560dc96329f30a5d13c8413f26823";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/uz/firefox-75.0.tar.bz2";
+      locale = "uz";
+      arch = "linux-i686";
+      sha512 = "d957e4942ead1634d792555f57c6dbe54972fd9a97071e63901b422ed6b723426b27fe85afc8c33d75087a502112a4b4b2e0dc3f3a04a9d44a48ec867dc78cb2";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/vi/firefox-75.0.tar.bz2";
+      locale = "vi";
+      arch = "linux-i686";
+      sha512 = "e3209382cf01d827f3e68230c46c6eda837798f92812c93ac19e81a77a0d72f3a5b53681320b71d886d8d4339fb2eb51d056bb4bc41466116aa51ffd50ff05d1";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/xh/firefox-75.0.tar.bz2";
+      locale = "xh";
+      arch = "linux-i686";
+      sha512 = "8719acd4bca1136668c6a90b3f7caaf29bd773acaab2776f2b7daca3c9028c33e73dc2c15c82d44064e92b61def23ca889a2ad09043c5bc5ad91db3214af1919";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/zh-CN/firefox-75.0.tar.bz2";
+      locale = "zh-CN";
+      arch = "linux-i686";
+      sha512 = "681e276d7ff6a6f91be59994e53f9f6f082e16f9d22ec7e1d1b65813e91c6c2661f28989b0331100b6f0d4cdbbb0589204b0ed80bf5f0bc0d18016e905a71148";
+    }
+    { url = "http://archive.mozilla.org/pub/firefox/releases/75.0/linux-i686/zh-TW/firefox-75.0.tar.bz2";
+      locale = "zh-TW";
+      arch = "linux-i686";
+      sha512 = "71ee272a7d02758187a9ef2d0a722760d04d9bf0fe11c90e841e15dc9019f44ba22483b6698e3f8eba9620e34d2678db2dbc2974c1ab5c7f0f79934aa4142432";
+    }
+    ];
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/update.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/update.nix
new file mode 100644
index 000000000000..d6593be8890c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox-bin/update.nix
@@ -0,0 +1,90 @@
+{ name
+, channel
+, writeScript
+, xidel
+, coreutils
+, gnused
+, gnugrep
+, curl
+, gnupg
+, runtimeShell
+, baseName ? "firefox"
+, basePath ? "pkgs/applications/networking/browsers/firefox-bin"
+, baseUrl
+}:
+
+let
+  isBeta =
+    channel != "release";
+
+in writeScript "update-${name}" ''
+  #!${runtimeShell}
+  PATH=${coreutils}/bin:${gnused}/bin:${gnugrep}/bin:${xidel}/bin:${curl}/bin:${gnupg}/bin
+  set -eux
+  pushd ${basePath}
+
+  export GNUPGHOME=`mktemp -d`
+  gpg --keyserver hkps://gpg.mozilla.org --recv-keys 14F26682D0916CDD81E37B6D61B7B526D98F0353
+
+  tmpfile=`mktemp`
+  url=${baseUrl}
+
+  # retriving latest released version
+  #  - extracts all links from the $url
+  #  - removes . and ..
+  #  - this line remove everything not starting with a number
+  #  - this line sorts everything with semver in mind
+  #  - we remove lines that are mentioning funnelcake
+  #  - this line removes beta version if we are looking for final release
+  #    versions or removes release versions if we are looking for beta
+  #    versions
+  # - this line pick up latest release
+  version=`xidel -s $url --extract "//a" | \
+           sed s"/.$//" | \
+           grep "^[0-9]" | \
+           sort --version-sort | \
+           grep -v "funnelcake" | \
+           grep -e "${if isBeta then "b" else ""}\([[:digit:]]\|[[:digit:]][[:digit:]]\)$" | ${if isBeta then "" else "grep -v \"b\" |"} \
+           tail -1`
+
+  curl --silent -o $HOME/shasums "$url$version/SHA512SUMS"
+  curl --silent -o $HOME/shasums.asc "$url$version/SHA512SUMS.asc"
+  gpgv --keyring=$GNUPGHOME/pubring.kbx $HOME/shasums.asc $HOME/shasums
+
+  # this is a list of sha512 and tarballs for both arches
+  shasums=`cat $HOME/shasums`
+
+  cat > $tmpfile <<EOF
+  {
+    version = "$version";
+    sources = [
+  EOF
+  for arch in linux-x86_64 linux-i686; do
+    # retriving a list of all tarballs for each arch
+    #  - only select tarballs for current arch
+    #  - only select tarballs for current version
+    #  - rename space with colon so that for loop doesnt
+    #  - inteprets sha and path as 2 lines
+    for line in `echo "$shasums" | \
+                 grep $arch | \
+                 grep "${baseName}-$version.tar.bz2$" | \
+                 tr " " ":"`; do
+      # create an entry for every locale
+      cat >> $tmpfile <<EOF
+      { url = "$url$version/`echo $line | cut -d":" -f3`";
+        locale = "`echo $line | cut -d":" -f3 | sed "s/$arch\///" | sed "s/\/.*//"`";
+        arch = "$arch";
+        sha512 = "`echo $line | cut -d":" -f1`";
+      }
+  EOF
+    done
+  done
+  cat >> $tmpfile <<EOF
+      ];
+  }
+  EOF
+
+  mv $tmpfile ${channel}_sources.nix
+
+  popd
+''
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/common.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox/common.nix
new file mode 100644
index 000000000000..3a1ae0b7cea0
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/common.nix
@@ -0,0 +1,315 @@
+{ pname, ffversion, meta, updateScript ? null
+, src, unpackPhase ? null, patches ? []
+, extraNativeBuildInputs ? [], extraConfigureFlags ? [], extraMakeFlags ? [] }:
+
+{ lib, stdenv, pkgconfig, pango, perl, python2, python3, zip, libIDL
+, libjpeg, zlib, dbus, dbus-glib, bzip2, xorg
+, freetype, fontconfig, file, nspr, nss, libnotify
+, yasm, libGLU, libGL, sqlite, unzip, makeWrapper
+, hunspell, libXdamage, libevent, libstartup_notification
+, libvpx, libvpx_1_8
+, icu, libpng, jemalloc, glib
+, autoconf213, which, gnused, cargo, rustc, llvmPackages
+, rust-cbindgen, nodejs, nasm, fetchpatch
+, debugBuild ? false
+
+### optionals
+
+## optional libraries
+
+, alsaSupport ? stdenv.isLinux, alsaLib
+, pulseaudioSupport ? stdenv.isLinux, libpulseaudio
+, ffmpegSupport ? true
+, gtk3Support ? true, gtk2, gtk3, wrapGAppsHook
+, gssSupport ? true, kerberos
+, waylandSupport ? gtk3Support, libxkbcommon
+
+## privacy-related options
+
+, privacySupport ? false
+
+# WARNING: NEVER set any of the options below to `true` by default.
+# Set to `!privacySupport` or `false`.
+
+# webrtcSupport breaks the aarch64 build on version >= 60, fixed in 63.
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1434589
+, webrtcSupport ? !privacySupport
+, geolocationSupport ? !privacySupport
+, googleAPISupport ? geolocationSupport
+, crashreporterSupport ? false
+
+, safeBrowsingSupport ? false
+, drmSupport ? false
+
+# macOS dependencies
+, xcbuild, CoreMedia, ExceptionHandling, Kerberos, AVFoundation, MediaToolbox
+, CoreLocation, Foundation, AddressBook, libobjc, cups, rsync
+
+## other
+
+# As stated by Sylvestre Ledru (@sylvestre) on Nov 22, 2017 at
+# https://github.com/NixOS/nixpkgs/issues/31843#issuecomment-346372756 we
+# have permission to use the official firefox branding.
+#
+# Fur purposes of documentation the statement of @sylvestre:
+# > As the person who did part of the work described in the LWN article
+# > and release manager working for Mozilla, I can confirm the statement
+# > that I made in
+# > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815006
+# >
+# > @garbas shared with me the list of patches applied for the Nix package.
+# > As they are just for portability and tiny modifications, they don't
+# > alter the experience of the product. In parallel, Rok also shared the
+# > build options. They seem good (even if I cannot judge the quality of the
+# > packaging of the underlying dependencies like sqlite, png, etc).
+# > Therefor, as long as you keep the patch queue sane and you don't alter
+# > the experience of Firefox users, you won't have any issues using the
+# > official branding.
+, enableOfficialBranding ? true
+}:
+
+assert stdenv.cc.libc or null != null;
+
+let
+  flag = tf: x: [(if tf then "--enable-${x}" else "--disable-${x}")];
+
+  default-toolkit = if stdenv.isDarwin then "cairo-cocoa"
+                    else "cairo-gtk${if gtk3Support then "3${lib.optionalString waylandSupport "-wayland"}" else "2"}";
+
+  binaryName = "firefox";
+  binaryNameCapitalized = lib.toUpper (lib.substring 0 1 binaryName) + lib.substring 1 (-1) binaryName;
+
+  browserName = if stdenv.isDarwin then binaryNameCapitalized else binaryName;
+
+  execdir = if stdenv.isDarwin
+            then "/Applications/${binaryNameCapitalized}.app/Contents/MacOS"
+            else "/bin";
+in
+
+stdenv.mkDerivation ({
+  name = "${pname}-unwrapped-${ffversion}";
+  version = ffversion;
+
+  inherit src unpackPhase meta;
+
+  patches = [
+    ./env_var_for_system_dir.patch
+  ]
+  ++ patches;
+
+
+  # Ignore trivial whitespace changes in patches, this fixes compatibility of
+  # ./env_var_for_system_dir.patch with Firefox >=65 without having to track
+  # two patches.
+  patchFlags = [ "-p1" "-l" ];
+
+  buildInputs = [
+    gtk2 perl zip libIDL libjpeg zlib bzip2
+    dbus dbus-glib pango freetype fontconfig xorg.libXi xorg.libXcursor
+    xorg.libX11 xorg.libXrender xorg.libXft xorg.libXt file
+    libnotify xorg.pixman yasm libGLU libGL
+    xorg.libXScrnSaver xorg.xorgproto
+    xorg.libXext unzip makeWrapper
+    libevent libstartup_notification /* cairo */
+    icu libpng jemalloc glib
+    nasm
+    # >= 66 requires nasm for the AV1 lib dav1d
+    # yasm can potentially be removed in future versions
+    # https://bugzilla.mozilla.org/show_bug.cgi?id=1501796
+    # https://groups.google.com/forum/#!msg/mozilla.dev.platform/o-8levmLU80/SM_zQvfzCQAJ
+    nspr nss
+  ]
+  ++ lib.optionals  (lib.versionOlder ffversion "75") [ libvpx sqlite ]
+  ++ lib.optional  (lib.versionAtLeast ffversion "75.0") libvpx_1_8
+  ++ lib.optional  alsaSupport alsaLib
+  ++ lib.optional  pulseaudioSupport libpulseaudio # only headers are needed
+  ++ lib.optional  gtk3Support gtk3
+  ++ lib.optional  waylandSupport libxkbcommon
+  ++ lib.optional  gssSupport kerberos
+  ++ lib.optional  waylandSupport libxkbcommon
+  ++ lib.optionals stdenv.isDarwin [ CoreMedia ExceptionHandling Kerberos
+                                     AVFoundation MediaToolbox CoreLocation
+                                     Foundation libobjc AddressBook cups ];
+
+  NIX_CFLAGS_COMPILE = toString ([
+    "-I${glib.dev}/include/gio-unix-2.0"
+    "-I${nss.dev}/include/nss"
+  ]
+  ++ lib.optional (pname == "firefox-esr" && lib.versionOlder ffversion "69")
+    "-Wno-error=format-security");
+
+  postPatch = ''
+    substituteInPlace third_party/prio/prio/rand.c --replace 'nspr/prinit.h' 'prinit.h'
+    rm -rf obj-x86_64-pc-linux-gnu
+  '';
+
+  nativeBuildInputs =
+    [
+      autoconf213
+      cargo
+      gnused
+      llvmPackages.llvm # llvm-objdump
+      nodejs
+      perl
+      pkgconfig
+      python2
+      python3
+      rust-cbindgen
+      rustc
+      which
+    ]
+    ++ lib.optional gtk3Support wrapGAppsHook
+    ++ lib.optionals stdenv.isDarwin [ xcbuild rsync ]
+    ++ extraNativeBuildInputs;
+
+  preConfigure = ''
+    # remove distributed configuration files
+    rm -f configure
+    rm -f js/src/configure
+    rm -f .mozconfig*
+    # this will run autoconf213
+    configureScript="$(realpath ./mach) configure"
+    export MOZCONFIG=$(pwd)/mozconfig
+
+    # Set C flags for Rust's bindgen program. Unlike ordinary C
+    # compilation, bindgen does not invoke $CC directly. Instead it
+    # uses LLVM's libclang. To make sure all necessary flags are
+    # included we need to look in a few places.
+    # TODO: generalize this process for other use-cases.
+
+    BINDGEN_CFLAGS="$(< ${stdenv.cc}/nix-support/libc-cflags) \
+      $(< ${stdenv.cc}/nix-support/cc-cflags) \
+      ${stdenv.cc.default_cxx_stdlib_compile} \
+      ${lib.optionalString stdenv.cc.isClang "-idirafter ${stdenv.cc.cc}/lib/clang/${lib.getVersion stdenv.cc.cc}/include"} \
+      ${lib.optionalString stdenv.cc.isGNU "-isystem ${stdenv.cc.cc}/include/c++/${lib.getVersion stdenv.cc.cc} -isystem ${stdenv.cc.cc}/include/c++/${lib.getVersion stdenv.cc.cc}/${stdenv.hostPlatform.config}"} \
+      $NIX_CFLAGS_COMPILE"
+
+    echo "ac_add_options BINDGEN_CFLAGS='$BINDGEN_CFLAGS'" >> $MOZCONFIG
+  '' + (lib.optionalString googleAPISupport ''
+    # Google API key used by Chromium and Firefox.
+    # Note: These are for NixOS/nixpkgs use ONLY. For your own distribution,
+    # please get your own set of keys.
+    echo "AIzaSyDGi15Zwl11UNe6Y-5XW_upsfyw31qwZPI" > $TMPDIR/ga
+    # 60.5+ & 66+ did split the google API key arguments: https://bugzilla.mozilla.org/show_bug.cgi?id=1531176
+    configureFlagsArray+=("--with-google-location-service-api-keyfile=$TMPDIR/ga")
+    configureFlagsArray+=("--with-google-safebrowsing-api-keyfile=$TMPDIR/ga")
+  '') + ''
+    # AS=as in the environment causes build failure https://bugzilla.mozilla.org/show_bug.cgi?id=1497286
+    unset AS
+  '';
+
+  configureFlags = [
+    "--enable-application=browser"
+    "--with-system-jpeg"
+    "--with-system-zlib"
+    "--with-system-bz2"
+    "--with-system-libevent"
+    "--with-system-libvpx"
+    "--with-system-png" # needs APNG support
+    "--with-system-icu"
+    "--enable-system-ffi"
+    "--enable-system-pixman"
+    #"--enable-system-cairo"
+    "--enable-startup-notification"
+    #"--enable-content-sandbox" # TODO: probably enable after 54
+    "--disable-tests"
+    "--disable-necko-wifi" # maybe we want to enable this at some point
+    "--disable-updater"
+    "--enable-jemalloc"
+    "--disable-gconf"
+    "--enable-default-toolkit=${default-toolkit}"
+    "--with-libclang-path=${llvmPackages.libclang}/lib"
+    "--with-clang-path=${llvmPackages.clang}/bin/clang"
+    "--with-system-nspr"
+    "--with-system-nss"
+  ]
+  ++ lib.optional (lib.versionOlder ffversion "75") "--enable-system-sqlite"
+  ++ lib.optional (stdenv.isDarwin) "--disable-xcode-checks"
+  ++ lib.optionals (lib.versionOlder ffversion "69") [
+    "--enable-webrender=build"
+  ]
+
+  ++ flag alsaSupport "alsa"
+  ++ flag pulseaudioSupport "pulseaudio"
+  ++ flag ffmpegSupport "ffmpeg"
+  ++ flag gssSupport "negotiateauth"
+  ++ flag webrtcSupport "webrtc"
+  ++ flag crashreporterSupport "crashreporter"
+  ++ lib.optional (!drmSupport) "--disable-eme"
+
+  ++ (if debugBuild then [ "--enable-debug" "--enable-profiling" ]
+                    else [ "--disable-debug" "--enable-release"
+                           "--enable-optimize"
+                           "--enable-strip" ])
+  ++ lib.optional enableOfficialBranding "--enable-official-branding"
+  ++ extraConfigureFlags;
+
+  postConfigure = ''
+    cd obj-*
+  '';
+
+  makeFlags = lib.optionals enableOfficialBranding [
+    "MOZILLA_OFFICIAL=1"
+    "BUILD_OFFICIAL=1"
+  ]
+  ++ extraMakeFlags;
+
+  enableParallelBuilding = true;
+  doCheck = false; # "--disable-tests" above
+
+  installPhase = if stdenv.isDarwin then ''
+    mkdir -p $out/Applications
+    cp -LR dist/${binaryNameCapitalized}.app $out/Applications
+  '' else null;
+
+  postInstall = lib.optionalString stdenv.isLinux ''
+    # Remove SDK cruft. FIXME: move to a separate output?
+    rm -rf $out/share/idl $out/include $out/lib/${binaryName}-devel-*
+
+    # Needed to find Mozilla runtime
+    gappsWrapperArgs+=(--argv0 "$out/bin/.${binaryName}-wrapped")
+  '';
+
+  postFixup = lib.optionalString stdenv.isLinux ''
+    # Fix notifications. LibXUL uses dlopen for this, unfortunately; see #18712.
+    patchelf --set-rpath "${lib.getLib libnotify
+      }/lib:$(patchelf --print-rpath "$out"/lib/${binaryName}*/libxul.so)" \
+        "$out"/lib/${binaryName}*/libxul.so
+  '';
+
+  doInstallCheck = true;
+  installCheckPhase = ''
+    # Some basic testing
+    "$out${execdir}/${browserName}" --version
+  '';
+
+  passthru = {
+    inherit updateScript;
+    version = ffversion;
+    isFirefox3Like = true;
+    gtk = gtk2;
+    inherit nspr;
+    inherit ffmpegSupport;
+    inherit gssSupport;
+    inherit execdir;
+    inherit browserName;
+  } // lib.optionalAttrs gtk3Support { inherit gtk3; };
+} //
+lib.optionalAttrs (lib.versionAtLeast ffversion "74") {
+  hardeningDisable = [ "format" ]; # -Werror=format-security
+} //
+# the build system verifies checksums of the bundled rust sources
+# ./third_party/rust is be patched by our libtool fixup code in stdenv
+# unfortunately we can't just set this to `false` when we do not want it.
+# See https://github.com/NixOS/nixpkgs/issues/77289 for more details
+
+lib.optionalAttrs (lib.versionAtLeast ffversion "72") {
+  # Ideally we would figure out how to tell the build system to not
+  # care about changed hashes as we are already doing that when we
+  # fetch the sources. Any further modifications of the source tree
+  # is on purpose by some of our tool (or by accident and a bug?).
+  dontFixLibtool = true;
+
+  # on aarch64 this is also required
+  dontUpdateAutotoolsGnuConfigScripts = true;
+})
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/env_var_for_system_dir.patch b/nixpkgs/pkgs/applications/networking/browsers/firefox/env_var_for_system_dir.patch
new file mode 100644
index 000000000000..18d31356989a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/env_var_for_system_dir.patch
@@ -0,0 +1,6 @@
+--- a/toolkit/xre/nsXREDirProvider.cpp        2019-02-28 21:00:14.157543388 +0100
++++ b/toolkit/xre/nsXREDirProvider.cpp   2019-02-28 21:01:28.731128320 +0100
+@@ -302 +302,2 @@
+-  rv = NS_NewNativeLocalFile(dirname, false, getter_AddRefs(localDir));
++  const char* pathVar = PR_GetEnv("MOZ_SYSTEM_DIR");
++  rv = NS_NewNativeLocalFile((pathVar && *pathVar) ? nsDependentCString(pathVar) : reinterpret_cast<const nsCString&>(dirname), false, getter_AddRefs(localDir));
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch b/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch
new file mode 100644
index 000000000000..7d129dc78f98
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch
@@ -0,0 +1,23 @@
+diff -ur firefox-65.0-orig/docshell/base/nsAboutRedirector.cpp firefox-65.0/docshell/base/nsAboutRedirector.cpp
+--- firefox-65.0-orig/docshell/base/nsAboutRedirector.cpp       2019-01-23 00:48:28.988747428 +0100
++++ firefox-65.0/docshell/base/nsAboutRedirector.cpp    2019-01-23 00:51:13.378188397 +0100
+@@ -67,8 +67,6 @@
+     {"about", "chrome://global/content/aboutAbout.xhtml", 0},
+     {"addons", "chrome://mozapps/content/extensions/extensions.xul",
+      nsIAboutModule::ALLOW_SCRIPT},
+-    {"buildconfig", "chrome://global/content/buildconfig.html",
+-     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
+     {"checkerboard", "chrome://global/content/aboutCheckerboard.xhtml",
+      nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+          nsIAboutModule::ALLOW_SCRIPT},
+diff -ur firefox-65.0-orig/toolkit/content/jar.mn firefox-65.0/toolkit/content/jar.mn
+--- firefox-65.0-orig/toolkit/content/jar.mn    2019-01-23 00:48:35.033372506 +0100
++++ firefox-65.0/toolkit/content/jar.mn 2019-01-23 00:50:45.126565924 +0100
+@@ -36,7 +36,6 @@
+    content/global/plugins.css
+    content/global/browser-child.js
+    content/global/browser-content.js
+-*   content/global/buildconfig.html
+    content/global/buildconfig.css
+    content/global/contentAreaUtils.js
+    content/global/datepicker.xhtml
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-min-65.patch b/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-min-65.patch
new file mode 100644
index 000000000000..708004781efc
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/no-buildconfig-min-65.patch
@@ -0,0 +1,25 @@
+diff --git a/docshell/base/nsAboutRedirector.cpp b/docshell/base/nsAboutRedirector.cpp
+index fe0a5af..3df1e0e 100644
+--- a/docshell/base/nsAboutRedirector.cpp
++++ b/docshell/base/nsAboutRedirector.cpp
+@@ -67,8 +67,6 @@ static const RedirEntry kRedirMap[] = {
+     {"about", "chrome://global/content/aboutAbout.xhtml", 0},
+     {"addons", "chrome://mozapps/content/extensions/extensions.xul",
+      nsIAboutModule::ALLOW_SCRIPT},
+-    {"buildconfig", "chrome://global/content/buildconfig.html",
+-     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
+     {"checkerboard", "chrome://global/content/aboutCheckerboard.xhtml",
+      nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+          nsIAboutModule::ALLOW_SCRIPT},
+diff --git a/toolkit/content/jar.mn b/toolkit/content/jar.mn
+index 2ec137d..579ef4d 100644
+--- a/toolkit/content/jar.mn
++++ b/toolkit/content/jar.mn
+@@ -36,7 +36,6 @@ toolkit.jar:
+    content/global/plugins.css
+    content/global/browser-child.js
+    content/global/browser-content.js
+-*   content/global/buildconfig.html
+    content/global/buildconfig.css
+    content/global/contentAreaUtils.js
+    content/global/datepicker.xhtml
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/packages.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox/packages.nix
new file mode 100644
index 000000000000..3d435c9394af
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -0,0 +1,94 @@
+{ config, stdenv, lib, callPackage, fetchurl, firefoxCommon }:
+
+rec {
+  firefox = firefoxCommon rec {
+    pname = "firefox";
+    ffversion = "75.0";
+    src = fetchurl {
+      url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
+      sha512 = "0m3ibm6dy9cpvsxkzkzwj7na5rm5qz7sm3bpx604ibay9pccvgv59jxapisvmswzmlz2nv02l6p2gxlz3b0lbcg7rd5zasia92y7j99";
+    };
+
+    patches = [
+      ./no-buildconfig-ffx65.patch
+    ];
+
+    meta = {
+      description = "A web browser built from Firefox source tree";
+      homepage = "http://www.mozilla.com/en-US/firefox/";
+      maintainers = with lib.maintainers; [ eelco andir ];
+      platforms = lib.platforms.unix;
+      badPlatforms = lib.platforms.darwin;
+      broken = stdenv.buildPlatform.is32bit; # since Firefox 60, build on 32-bit platforms fails with "out of memory".
+                                             # not in `badPlatforms` because cross-compilation on 64-bit machine might work.
+      license = lib.licenses.mpl20;
+    };
+    updateScript = callPackage ./update.nix {
+      attrPath = "firefox-unwrapped";
+      versionKey = "ffversion";
+    };
+  };
+
+  firefox-esr-68 = firefoxCommon rec {
+    pname = "firefox-esr";
+    ffversion = "68.7.0esr";
+    src = fetchurl {
+      url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
+      sha512 = "29qbcc78hz1rsnz735a5miwfj0c3r1c5qm2043vyd9qz879vsh4ab82k7wncm3xa04kqdff26zh1rpbbjmdr7gwn4q8nmjzzs7wzpd3";
+    };
+
+    patches = [
+      ./no-buildconfig-ffx65.patch
+    ];
+
+    meta = firefox.meta // {
+      description = "A web browser built from Firefox Extended Support Release source tree";
+    };
+    updateScript = callPackage ./update.nix {
+      attrPath = "firefox-esr-68-unwrapped";
+      versionSuffix = "esr";
+      versionKey = "ffversion";
+    };
+  };
+
+  firefox-beta = firefoxCommon rec {
+    pname = "firefox";
+    ffversion = "66.0b5";
+    src = fetchurl {
+      url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
+      sha512 = "2cnv8pnl220dxqfpcdnwibwidc8b9zg3bj9wkzc83r4cdsfcjy3hqyw01gpc30a4qwbbabsgask3hl3dg7d3d8qqw4c588b00z67mvs";
+    };
+
+    patches = [
+      ./no-buildconfig-ffx65.patch
+    ];
+
+    meta = firefox.meta // {
+      description = "A web browser built from Firefox Beta source tree";
+    };
+    updateScript = callPackage ./update.nix {
+      attrPath = "firefox-beta";
+      versionKey = "ffversion";
+    };
+  };
+
+} // lib.optionalAttrs (config.allowAliases or true) {
+  #### ALIASES
+  #### remove after 20.03 branchoff
+
+  firefox-esr-52 = throw ''
+    firefoxPackages.firefox-esr-52 was removed as it's an unsupported ESR with
+    open security issues. If you need it because you need to run some plugins
+    not having been ported to WebExtensions API, import it from an older
+    nixpkgs checkout still containing it.
+  '';
+  firefox-esr-60 = throw "firefoxPackages.firefox-esr-60 was removed as it's an unsupported ESR with open security issues.";
+
+  icecat = throw "firefoxPackages.icecat was removed as even its latest upstream version is based on an unsupported ESR release with open security issues.";
+  icecat-52 = throw "firefoxPackages.icecat was removed as even its latest upstream version is based on an unsupported ESR release with open security issues.";
+
+  tor-browser-7-5 = throw "firefoxPackages.tor-browser-7-5 was removed because it was out of date and inadequately maintained. Please use tor-browser-bundle-bin instead. See #77452.";
+  tor-browser-8-5 = throw "firefoxPackages.tor-browser-8-5 was removed because it was out of date and inadequately maintained. Please use tor-browser-bundle-bin instead. See #77452.";
+  tor-browser = throw "firefoxPackages.tor-browser was removed because it was out of date and inadequately maintained. Please use tor-browser-bundle-bin instead. See #77452.";
+
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/update.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox/update.nix
new file mode 100644
index 000000000000..e12b552535d2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/update.nix
@@ -0,0 +1,35 @@
+{ writeScript
+, lib
+, xidel
+, common-updater-scripts
+, coreutils
+, gnused
+, gnugrep
+, curl
+, attrPath
+, runtimeShell
+, baseUrl ? "http://archive.mozilla.org/pub/firefox/releases/"
+, versionSuffix ? ""
+, versionKey ? "version"
+}:
+
+writeScript "update-${attrPath}" ''
+  #!${runtimeShell}
+  PATH=${lib.makeBinPath [ common-updater-scripts coreutils curl gnugrep gnused xidel ]}
+
+  url=${baseUrl}
+
+  # retriving latest released version
+  #  - extracts all links from the $url
+  #  - extracts lines only with number and dots followed by a slash
+  #  - removes trailing slash
+  #  - sorts everything with semver in mind
+  #  - picks up latest release
+  version=`xidel -s $url --extract "//a" | \
+           grep "^[0-9.]*${versionSuffix}/$" | \
+           sed s/[/]$// | \
+           sort --version-sort | \
+           tail -n 1`
+
+  update-source-version ${attrPath} "$version" "" "" --version-key=${versionKey}
+''
diff --git a/nixpkgs/pkgs/applications/networking/browsers/firefox/wrapper.nix b/nixpkgs/pkgs/applications/networking/browsers/firefox/wrapper.nix
new file mode 100644
index 000000000000..0afa8ca7b834
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -0,0 +1,182 @@
+{ stdenv, lib, makeDesktopItem, makeWrapper, lndir, config
+
+## various stuff that can be plugged in
+, flashplayer, hal-flash
+, ffmpeg, xorg, libpulseaudio, libcanberra-gtk2, libglvnd
+, gnome3/*.gnome-shell*/
+, browserpass, chrome-gnome-shell, uget-integrator, plasma-browser-integration, bukubrow
+, tridactyl-native
+, fx_cast_bridge
+, udev
+, kerberos
+}:
+
+## configurability of the wrapper itself
+
+browser:
+
+let
+  wrapper =
+    { browserName ? browser.browserName or (lib.getName browser)
+    , pname ? browserName
+    , version ? lib.getVersion browser
+    , desktopName ? # browserName with first letter capitalized
+      (lib.toUpper (lib.substring 0 1 browserName) + lib.substring 1 (-1) browserName)
+    , nameSuffix ? ""
+    , icon ? browserName
+    , extraNativeMessagingHosts ? []
+    , gdkWayland ? false
+    , cfg ? config.${browserName} or {}
+    }:
+
+    assert gdkWayland -> (browser ? gtk3); # Can only use the wayland backend if gtk3 is being used
+
+    let
+      enableAdobeFlash = cfg.enableAdobeFlash or false;
+      ffmpegSupport = browser.ffmpegSupport or false;
+      gssSupport = browser.gssSupport or false;
+
+      plugins =
+        let
+          removed = lib.filter (a: builtins.hasAttr a cfg) [
+            "enableVLC"
+            "enableDjvu"
+            "enableMPlayer"
+            "jre"
+            "icedtea"
+            "enableGoogleTalkPlugin"
+            "enableFriBIDPlugin"
+            "enableBluejeans"
+            "enableAdobeReader"
+          ];
+        in if removed != []
+           then throw "Your configuration mentions ${lib.concatMapStringsSep ", " (p: browserName + "." + p) removed}. All plugin related options, except for the adobe flash player, have been removed, since Firefox from version 52 onwards no longer supports npapi plugins (see https://support.mozilla.org/en-US/kb/npapi-plugins)."
+           else lib.optional enableAdobeFlash flashplayer;
+
+      nativeMessagingHosts =
+        ([ ]
+          ++ lib.optional (cfg.enableBrowserpass or false) (lib.getBin browserpass)
+          ++ lib.optional (cfg.enableBukubrow or false) bukubrow
+          ++ lib.optional (cfg.enableTridactylNative or false) tridactyl-native
+          ++ lib.optional (cfg.enableGnomeExtensions or false) chrome-gnome-shell
+          ++ lib.optional (cfg.enableUgetIntegrator or false) uget-integrator
+          ++ lib.optional (cfg.enablePlasmaBrowserIntegration or false) plasma-browser-integration
+          ++ lib.optional (cfg.enableFXCastBridge or false) fx_cast_bridge
+          ++ extraNativeMessagingHosts
+        );
+      libs =   lib.optional stdenv.isLinux udev
+            ++ lib.optional ffmpegSupport ffmpeg
+            ++ lib.optional gssSupport kerberos
+            ++ lib.optional gdkWayland libglvnd
+            ++ lib.optionals (cfg.enableQuakeLive or false)
+            (with xorg; [ stdenv.cc libX11 libXxf86dga libXxf86vm libXext libXt alsaLib zlib ])
+            ++ lib.optional (enableAdobeFlash && (cfg.enableAdobeFlashDRM or false)) hal-flash
+            ++ lib.optional (config.pulseaudio or true) libpulseaudio;
+      gtk_modules = [ libcanberra-gtk2 ];
+
+    in stdenv.mkDerivation {
+      inherit pname version;
+
+      desktopItem = makeDesktopItem {
+        name = browserName;
+        exec = "${browserName}${nameSuffix} %U";
+        inherit icon;
+        comment = "";
+        desktopName = "${desktopName}${nameSuffix}${lib.optionalString gdkWayland " (Wayland)"}";
+        genericName = "Web Browser";
+        categories = "Application;Network;WebBrowser;";
+        mimeType = stdenv.lib.concatStringsSep ";" [
+          "text/html"
+          "text/xml"
+          "application/xhtml+xml"
+          "application/vnd.mozilla.xul+xml"
+          "x-scheme-handler/http"
+          "x-scheme-handler/https"
+          "x-scheme-handler/ftp"
+        ];
+      };
+
+      nativeBuildInputs = [ makeWrapper lndir ];
+      buildInputs = lib.optional (browser ? gtk3) browser.gtk3;
+
+      buildCommand = lib.optionalString stdenv.isDarwin ''
+        mkdir -p $out/Applications
+        cp -R --no-preserve=mode,ownership ${browser}/Applications/${browserName}.app $out/Applications
+        rm -f $out${browser.execdir or "/bin"}/${browserName}
+      '' + ''
+        if [ ! -x "${browser}${browser.execdir or "/bin"}/${browserName}" ]
+        then
+            echo "cannot find executable file \`${browser}${browser.execdir or "/bin"}/${browserName}'"
+            exit 1
+        fi
+
+        makeWrapper "$(readlink -v --canonicalize-existing "${browser}${browser.execdir or "/bin"}/${browserName}")" \
+          "$out${browser.execdir or "/bin"}/${browserName}${nameSuffix}" \
+            --suffix-each MOZ_PLUGIN_PATH ':' "$plugins" \
+            --suffix LD_LIBRARY_PATH ':' "$libs" \
+            --suffix-each GTK_PATH ':' "$gtk_modules" \
+            --suffix-each LD_PRELOAD ':' "$(cat $(filterExisting $(addSuffix /extra-ld-preload $plugins)))" \
+            --prefix-contents PATH ':' "$(filterExisting $(addSuffix /extra-bin-path $plugins))" \
+            --suffix PATH ':' "$out${browser.execdir or "/bin"}" \
+            --set MOZ_APP_LAUNCHER "${browserName}${nameSuffix}" \
+            --set MOZ_SYSTEM_DIR "$out/lib/mozilla" \
+            --set SNAP_NAME "firefox" \
+            --set MOZ_LEGACY_PROFILES 1 \
+            --set MOZ_ALLOW_DOWNGRADE 1 \
+            ${lib.optionalString gdkWayland ''
+              --set GDK_BACKEND "wayland" \
+            ''}${lib.optionalString (browser ? gtk3)
+                ''--prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH" \
+                  --suffix XDG_DATA_DIRS : '${gnome3.adwaita-icon-theme}/share'
+                ''
+            }
+
+        if [ -e "${browser}/share/icons" ]; then
+            mkdir -p "$out/share"
+            ln -s "${browser}/share/icons" "$out/share/icons"
+        else
+            for res in 16 32 48 64 128; do
+            mkdir -p "$out/share/icons/hicolor/''${res}x''${res}/apps"
+            icon=( "${browser}/lib/"*"/browser/chrome/icons/default/default''${res}.png" )
+              if [ -e "$icon" ]; then ln -s "$icon" \
+                "$out/share/icons/hicolor/''${res}x''${res}/apps/${browserName}.png"
+              fi
+            done
+        fi
+
+        install -D -t $out/share/applications $desktopItem/share/applications/*
+
+        mkdir -p $out/lib/mozilla/native-messaging-hosts
+        for ext in ${toString nativeMessagingHosts}; do
+            ln -sLt $out/lib/mozilla/native-messaging-hosts $ext/lib/mozilla/native-messaging-hosts/*
+        done
+
+        # For manpages, in case the program supplies them
+        mkdir -p $out/nix-support
+        echo ${browser} > $out/nix-support/propagated-user-env-packages
+      '';
+
+      preferLocalBuild = true;
+
+      # Let each plugin tell us (through its `mozillaPlugin') attribute
+      # where to find the plugin in its tree.
+      plugins = map (x: x + x.mozillaPlugin) plugins;
+      libs = lib.makeLibraryPath libs + ":" + lib.makeSearchPathOutput "lib" "lib64" libs;
+      gtk_modules = map (x: x + x.gtkModule) gtk_modules;
+
+      passthru = { unwrapped = browser; };
+
+      disallowedRequisites = [ stdenv.cc ];
+
+      meta = browser.meta // {
+        description =
+          browser.meta.description
+          + " (with plugins: "
+          + lib.concatStrings (lib.intersperse ", " (map (x: x.name) plugins))
+          + ")";
+        hydraPlatforms = [];
+        priority = (browser.meta.priority or 0) - 1; # prefer wrapper over the package
+      };
+    };
+in
+  lib.makeOverridable wrapper
diff --git a/nixpkgs/pkgs/applications/networking/browsers/google-chrome/default.nix b/nixpkgs/pkgs/applications/networking/browsers/google-chrome/default.nix
new file mode 100644
index 000000000000..e5cd08f7df7f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/google-chrome/default.nix
@@ -0,0 +1,141 @@
+{ stdenv, patchelf, makeWrapper
+
+# Linked dynamic libraries.
+, glib, fontconfig, freetype, pango, cairo, libX11, libXi, atk, gconf, nss, nspr
+, libXcursor, libXext, libXfixes, libXrender, libXScrnSaver, libXcomposite, libxcb
+, alsaLib, libXdamage, libXtst, libXrandr, expat, cups
+, dbus, gtk2, gtk3, gdk-pixbuf, gcc-unwrapped, at-spi2-atk, at-spi2-core
+, kerberos, libdrm, mesa
+
+# command line arguments which are always set e.g "--disable-gpu"
+, commandLineArgs ? ""
+
+# Will crash without.
+, systemd
+
+# Loaded at runtime.
+, libexif
+
+# Additional dependencies according to other distros.
+## Ubuntu
+, liberation_ttf, curl, utillinux, xdg_utils, wget
+## Arch Linux.
+, flac, harfbuzz, icu, libpng, libopus, snappy, speechd
+## Gentoo
+, bzip2, libcap
+
+# Which distribution channel to use.
+, channel ? "stable"
+
+# Necessary for USB audio devices.
+, pulseSupport ? true, libpulseaudio ? null
+
+# Only needed for getting information about upstream binaries
+, chromium
+
+, gsettings-desktop-schemas
+, gnome2, gnome3
+}:
+
+with stdenv.lib;
+
+let
+  opusWithCustomModes = libopus.override {
+    withCustomModes = true;
+  };
+
+  version = chromium.upstream-info.version;
+  gtk = if (versionAtLeast version "59.0.0.0") then gtk3 else gtk2;
+  gnome = if (versionAtLeast version "59.0.0.0") then gnome3 else gnome2;
+
+  deps = [
+    glib fontconfig freetype pango cairo libX11 libXi atk gconf nss nspr
+    libXcursor libXext libXfixes libXrender libXScrnSaver libXcomposite libxcb
+    alsaLib libXdamage libXtst libXrandr expat cups
+    dbus gdk-pixbuf gcc-unwrapped.lib
+    systemd
+    libexif
+    liberation_ttf curl utillinux xdg_utils wget
+    flac harfbuzz icu libpng opusWithCustomModes snappy speechd
+    bzip2 libcap at-spi2-atk at-spi2-core
+    kerberos libdrm mesa
+  ] ++ optional pulseSupport libpulseaudio
+    ++ [ gtk ];
+
+  suffix = if channel != "stable" then "-" + channel else "";
+
+in stdenv.mkDerivation {
+  inherit version;
+
+  name = "google-chrome${suffix}-${version}";
+
+  src = chromium.upstream-info.binary;
+
+  nativeBuildInputs = [ patchelf makeWrapper ];
+  buildInputs = [
+    # needed for GSETTINGS_SCHEMAS_PATH
+    gsettings-desktop-schemas glib gtk
+
+    # needed for XDG_ICON_DIRS
+    gnome.adwaita-icon-theme
+  ];
+
+  unpackPhase = ''
+    ar x $src
+    tar xf data.tar.xz
+  '';
+
+  rpath = makeLibraryPath deps + ":" + makeSearchPathOutput "lib" "lib64" deps;
+  binpath = makeBinPath deps;
+
+  installPhase = ''
+    case ${channel} in
+      beta) appname=chrome-beta      dist=beta     ;;
+      dev)  appname=chrome-unstable  dist=unstable ;;
+      *)    appname=chrome           dist=stable   ;;
+    esac
+
+    exe=$out/bin/google-chrome-$dist
+
+    mkdir -p $out/bin $out/share
+
+    cp -a opt/* $out/share
+    cp -a usr/share/* $out/share
+
+    substituteInPlace $out/share/applications/google-$appname.desktop \
+      --replace /usr/bin/google-chrome-$dist $exe
+    substituteInPlace $out/share/gnome-control-center/default-apps/google-$appname.xml \
+      --replace /opt/google/$appname/google-$appname $exe
+    substituteInPlace $out/share/menu/google-$appname.menu \
+      --replace /opt $out/share \
+      --replace $out/share/google/$appname/google-$appname $exe
+
+    for icon_file in $out/share/google/chrome*/product_logo_*[0-9].png; do
+      num_and_suffix="''${icon_file##*logo_}"
+      icon_size="''${num_and_suffix%.*}"
+      logo_output_prefix="$out/share/icons/hicolor"
+      logo_output_path="$logo_output_prefix/''${icon_size}x''${icon_size}/apps"
+      mkdir -p "$logo_output_path"
+      mv "$icon_file" "$logo_output_path/google-$appname.png"
+    done
+
+    makeWrapper "$out/share/google/$appname/google-$appname" "$exe" \
+      --prefix LD_LIBRARY_PATH : "$rpath" \
+      --prefix PATH            : "$binpath" \
+      --prefix XDG_DATA_DIRS   : "$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH" \
+      --add-flags ${escapeShellArg commandLineArgs}
+
+    for elf in $out/share/google/$appname/{chrome,chrome-sandbox,nacl_helper}; do
+      patchelf --set-rpath $rpath $elf
+      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $elf
+    done
+  '';
+
+  meta = {
+    description = "A freeware web browser developed by Google";
+    homepage = "https://www.google.com/chrome/browser/";
+    license = licenses.unfree;
+    maintainers = [ maintainers.msteen ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/links2/default.nix b/nixpkgs/pkgs/applications/networking/browsers/links2/default.nix
new file mode 100644
index 000000000000..d58fc8fd19bf
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/links2/default.nix
@@ -0,0 +1,39 @@
+{ stdenv, fetchurl
+, gpm, openssl, pkgconfig, libev # Misc.
+, libpng, libjpeg, libtiff, librsvg # graphic formats
+, bzip2, zlib, xz # Transfer encodings
+, enableFB ? true
+, enableDirectFB ? false, directfb
+, enableX11 ? true, libX11, libXt, libXau # GUI support
+}:
+
+stdenv.mkDerivation rec {
+  version = "2.20.2";
+  pname = "links2";
+
+  src = fetchurl {
+    url = "${meta.homepage}/download/links-${version}.tar.bz2";
+    sha256 = "097ll98ympzfx7qfdyhc52yzvsp167x5nnjs6v8ih496wv80fksb";
+  };
+
+  buildInputs = with stdenv.lib;
+    [ libev librsvg libpng libjpeg libtiff openssl xz bzip2 zlib ]
+    ++ optionals stdenv.isLinux [ gpm ]
+    ++ optionals enableX11 [ libX11 libXau libXt ]
+    ++ optional enableDirectFB [ directfb ];
+
+  nativeBuildInputs = [ pkgconfig bzip2 ];
+
+  configureFlags = [ "--with-ssl" ]
+    ++ stdenv.lib.optional (enableX11 || enableFB || enableDirectFB) "--enable-graphics"
+    ++ stdenv.lib.optional enableX11 "--with-x"
+    ++ stdenv.lib.optional enableFB "--with-fb"
+    ++ stdenv.lib.optional enableDirectFB "--with-directfb";
+
+  meta = with stdenv.lib; {
+    homepage = "http://links.twibright.com/";
+    description = "A small browser with some graphics support";
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/luakit/default.nix b/nixpkgs/pkgs/applications/networking/browsers/luakit/default.nix
new file mode 100644
index 000000000000..bf10043e942e
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/luakit/default.nix
@@ -0,0 +1,62 @@
+{ stdenv, fetchFromGitHub, pkgconfig, wrapGAppsHook
+, help2man, luafilesystem, luajit, sqlite
+, webkitgtk, gtk3, gst_all_1, glib-networking
+}:
+
+stdenv.mkDerivation rec {
+  pname = "luakit";
+  version = "2.1";
+
+  src = fetchFromGitHub {
+    owner = "luakit";
+    repo = "luakit";
+    rev = version;
+    sha256 = "05mm76g72fs48410pbij4mw0s3nqji3r7f3mnr2fvhv02xqj05aa";
+  };
+
+  nativeBuildInputs = [
+    pkgconfig help2man wrapGAppsHook
+  ];
+
+  buildInputs = [
+    webkitgtk luafilesystem luajit sqlite gtk3
+    gst_all_1.gstreamer gst_all_1.gst-plugins-base
+    gst_all_1.gst-plugins-good gst_all_1.gst-plugins-bad gst_all_1.gst-plugins-ugly
+    gst_all_1.gst-libav
+    glib-networking # TLS support
+  ];
+
+  preBuild = ''
+    # build-utils/docgen/gen.lua:2: module 'lib.lousy.util' not found
+    # TODO: why is not this the default? The test runner adds
+    # ';./lib/?.lua;./lib/?/init.lua' to package.path, but the build-utils
+    # scripts don't add an equivalent
+    export LUA_PATH="$LUA_PATH;./?.lua;./?/init.lua"
+  '';
+
+  makeFlags = [
+    "DEVELOPMENT_PATHS=0"
+    "USE_LUAJIT=1"
+    "INSTALLDIR=${placeholder "out"}"
+    "PREFIX=${placeholder "out"}"
+    "USE_GTK3=1"
+    "XDGPREFIX=${placeholder "out"}/etc/xdg"
+  ];
+
+  preFixup = let
+    luaKitPath = "$out/share/luakit/lib/?/init.lua;$out/share/luakit/lib/?.lua";
+  in ''
+    gappsWrapperArgs+=(
+      --prefix XDG_CONFIG_DIRS : "$out/etc/xdg"
+      --prefix LUA_PATH ';' "${luaKitPath};$LUA_PATH"
+      --prefix LUA_CPATH ';' "$LUA_CPATH"
+    )
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Fast, small, webkit based browser framework extensible in Lua";
+    homepage    = "https://luakit.github.io/";
+    license     = licenses.gpl3;
+    platforms   = platforms.linux; # Only tested linux
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/lynx/default.nix b/nixpkgs/pkgs/applications/networking/browsers/lynx/default.nix
new file mode 100644
index 000000000000..8aeee45b9e54
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/lynx/default.nix
@@ -0,0 +1,50 @@
+{ stdenv, buildPackages
+, fetchurl, pkgconfig, ncurses, gzip
+, sslSupport ? true, openssl ? null
+, nukeReferences
+}:
+
+assert sslSupport -> openssl != null;
+
+stdenv.mkDerivation rec {
+  pname = "lynx";
+  version = "2.8.9rel.1";
+
+  src = fetchurl {
+    urls = [
+      "ftp://ftp.invisible-island.net/lynx/tarballs/lynx${version}.tar.bz2"
+      "https://invisible-mirror.net/archives/lynx/tarballs/lynx${version}.tar.bz2"
+    ];
+    sha256 = "15cmyyma2kz1hfaa6mwjgli8zwdzq3jv0q2cl6nwzycjfwyijzrq";
+  };
+
+  enableParallelBuilding = true;
+
+  hardeningEnable = [ "pie" ];
+
+  configureFlags = [
+    "--enable-default-colors"
+    "--enable-widec"
+    "--enable-ipv6"
+  ] ++ stdenv.lib.optional sslSupport "--with-ssl";
+
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+  nativeBuildInputs = [ nukeReferences ]
+    ++ stdenv.lib.optional sslSupport pkgconfig;
+
+  buildInputs = [ ncurses gzip ] ++ stdenv.lib.optional sslSupport openssl.dev;
+
+  # cfg_defs.h captures lots of references to build-only dependencies, derived
+  # from config.cache.
+  postConfigure = ''
+    make cfg_defs.h
+    nuke-refs cfg_defs.h
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A text-mode web browser";
+    homepage = "https://lynx.invisible-island.net/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/midori/default.nix b/nixpkgs/pkgs/applications/networking/browsers/midori/default.nix
new file mode 100644
index 000000000000..66f6384643ad
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/midori/default.nix
@@ -0,0 +1,59 @@
+{ stdenv
+, fetchurl
+, cmake
+, ninja
+, pkgconfig
+, intltool
+, vala
+, wrapGAppsHook
+, gcr
+, libpeas
+, gtk3
+, webkitgtk
+, sqlite
+, gsettings-desktop-schemas
+, libsoup
+, glib-networking
+, json-glib
+, libarchive
+}:
+
+stdenv.mkDerivation rec {
+  pname = "midori";
+  version = "9.0";
+
+  src = fetchurl {
+    url = "https://github.com/midori-browser/core/releases/download/v${version}/midori-v${version}.tar.gz";
+    sha256 = "05i04qa83dnarmgkx4xsk6fga5lw1lmslh4rb3vhyyy4ala562jy";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    intltool
+    ninja
+    pkgconfig
+    vala
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    (libsoup.override { gnomeSupport = true; })
+    gcr
+    glib-networking
+    gsettings-desktop-schemas
+    gtk3
+    libpeas
+    sqlite
+    webkitgtk
+    json-glib
+    libarchive
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Lightweight WebKitGTK web browser";
+    homepage = "https://www.midori-browser.org/";
+    license = with licenses; [ lgpl21Plus ];
+    platforms = with platforms; linux;
+    maintainers = with maintainers; [ raskin ramkromberg ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/default.nix b/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/default.nix
new file mode 100644
index 000000000000..6672a75d574d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/default.nix
@@ -0,0 +1,147 @@
+{ stdenv
+, lib
+, fetchurl
+, alsaLib
+, atk
+, bzip2
+, cairo
+, curl
+, expat
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, glibc
+, graphite2
+, gtk2
+, harfbuzz
+, libICE
+, libSM
+, libX11
+, libXau
+, libXcomposite
+, libXcursor
+, libXdamage
+, libXdmcp
+, libXext
+, libXfixes
+, libXi
+, libXinerama
+, libXrandr
+, libXrender
+, libXt
+, libXxf86vm
+, libdrm
+, libffi
+, libglvnd
+, libpng
+, libvdpau
+, libxcb
+, libxshmfence
+, nspr
+, nss
+, pango
+, pcre
+, pixman
+, zlib
+, unzip
+, debug ? false
+
+/* you have to add ~/mm.cfg :
+
+    TraceOutputFileEnable=1
+    ErrorReportingEnable=1
+    MaxWarnings=1
+
+  in order to read the flash trace at ~/.macromedia/Flash_Player/Logs/flashlog.txt
+  Then FlashBug (a FireFox plugin) shows the log as well
+*/
+
+}:
+
+let
+  arch =
+    if stdenv.hostPlatform.system == "x86_64-linux" then
+      "x86_64"
+    else if stdenv.hostPlatform.system == "i686-linux"   then
+      "i386"
+    else throw "Flash Player is not supported on this platform";
+  lib_suffix =
+      if stdenv.hostPlatform.system == "x86_64-linux" then
+      "64"
+    else
+      "";
+in
+stdenv.mkDerivation rec {
+  pname = "flashplayer";
+  version = "32.0.0.363";
+
+  src = fetchurl {
+    url =
+      if debug then
+        "https://fpdownload.macromedia.com/pub/flashplayer/updaters/32/flash_player_npapi_linux_debug.${arch}.tar.gz"
+      else
+        "https://fpdownload.adobe.com/get/flashplayer/pdc/${version}/flash_player_npapi_linux.${arch}.tar.gz";
+    sha256 =
+      if debug then
+        if arch == "x86_64" then
+          "06711k4vbn6mqfd8gvx2snsxyalhw15hn5b64sja8726z5rxvzy7"
+        else
+          "0v584aqhy4xk08afi3ypkq4mqjq57y136z82i5ixyim88dqbaf4f"
+      else
+        if arch == "x86_64" then
+          "1g1ijxypm8a8mfc1x58gksmaakqpp7xmf277wiir8zqjn3vd6c64"
+        else
+          "13nbxmqmbxqvdhdwdqimim2f9fz3y2vrsx6b3pck6352m4i4wzh8";
+  };
+
+  nativeBuildInputs = [ unzip ];
+
+  sourceRoot = ".";
+
+  dontStrip = true;
+  dontPatchELF = true;
+
+  preferLocalBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/lib/mozilla/plugins
+    cp -pv libflashplayer.so $out/lib/mozilla/plugins
+
+    mkdir -p $out/bin
+    cp -pv usr/bin/flash-player-properties $out/bin
+
+    mkdir -p $out/lib${lib_suffix}/kde4
+    cp -pv usr/lib${lib_suffix}/kde4/kcm_adobe_flash_player.so $out/lib${lib_suffix}/kde4
+
+    patchelf --set-rpath "$rpath" \
+      $out/lib/mozilla/plugins/libflashplayer.so \
+      $out/lib${lib_suffix}/kde4/kcm_adobe_flash_player.so
+
+    patchelf \
+      --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
+      --set-rpath "$rpath" \
+      $out/bin/flash-player-properties
+  '';
+
+  passthru = {
+    mozillaPlugin = "/lib/mozilla/plugins";
+  };
+
+  rpath = lib.makeLibraryPath
+    [ stdenv.cc.cc
+      alsaLib atk bzip2 cairo curl expat fontconfig freetype gdk-pixbuf glib
+      glibc graphite2 gtk2 harfbuzz libICE libSM libX11 libXau libXcomposite
+      libXcursor libXdamage libXdmcp libXext libXfixes libXi libXinerama
+      libXrandr libXrender libXt libXxf86vm libdrm libffi libglvnd libpng
+      libvdpau libxcb libxshmfence nspr nss pango pcre pixman zlib
+    ];
+
+  meta = {
+    description = "Adobe Flash Player browser plugin";
+    homepage = "http://www.adobe.com/products/flashplayer/";
+    license = stdenv.lib.licenses.unfree;
+    maintainers = with stdenv.lib.maintainers; [ taku0 ];
+    platforms = [ "x86_64-linux" "i686-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/standalone.nix b/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/standalone.nix
new file mode 100644
index 000000000000..3661f6edb530
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer/standalone.nix
@@ -0,0 +1,106 @@
+{ stdenv
+, lib
+, fetchurl
+, alsaLib
+, atk
+, bzip2
+, cairo
+, curl
+, expat
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, glibc
+, graphite2
+, gtk2
+, harfbuzz
+, libICE
+, libSM
+, libX11
+, libXau
+, libXcomposite
+, libXcursor
+, libXdamage
+, libXdmcp
+, libXext
+, libXfixes
+, libXi
+, libXinerama
+, libXrandr
+, libXrender
+, libXt
+, libXxf86vm
+, libdrm
+, libffi
+, libglvnd
+, libpng
+, libvdpau
+, libxcb
+, libxshmfence
+, nspr
+, nss
+, pango
+, pcre
+, pixman
+, zlib
+, unzip
+, debug ? false
+}:
+
+stdenv.mkDerivation {
+  pname = "flashplayer-standalone";
+  version = "32.0.0.363";
+
+  src = fetchurl {
+    url =
+      if debug then
+        "https://fpdownload.macromedia.com/pub/flashplayer/updaters/32/flash_player_sa_linux_debug.x86_64.tar.gz"
+      else
+        "https://fpdownload.macromedia.com/pub/flashplayer/updaters/32/flash_player_sa_linux.x86_64.tar.gz";
+    sha256 =
+      if debug then
+        "03zhza8lvc1nvz3racwfsajfd6rnbw3g56dp5wvr1qmaps8xaaqg"
+      else
+        "0bhp7jv2l2agfzr8m564k749a5g75dw1390phlwvf49n1h8ldap2";
+  };
+
+  nativeBuildInputs = [ unzip ];
+
+  sourceRoot = ".";
+
+  dontStrip = true;
+  dontPatchELF = true;
+
+  preferLocalBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -pv flashplayer${lib.optionalString debug "debugger"} $out/bin
+
+    patchelf \
+      --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
+      --set-rpath "$rpath" \
+      $out/bin/flashplayer${lib.optionalString debug "debugger"}
+  '';
+
+  rpath = lib.makeLibraryPath
+    [ stdenv.cc.cc
+      alsaLib atk bzip2 cairo curl expat fontconfig freetype gdk-pixbuf glib
+      glibc graphite2 gtk2 harfbuzz libICE libSM libX11 libXau libXcomposite
+      libXcursor libXdamage libXdmcp libXext libXfixes libXi libXinerama
+      libXrandr libXrender libXt libXxf86vm libdrm libffi libglvnd libpng
+      libvdpau libxcb libxshmfence nspr nss pango pcre pixman zlib
+    ];
+
+  meta = {
+    description = "Adobe Flash Player standalone executable";
+    homepage = "https://www.adobe.com/support/flashplayer/debug_downloads.html";
+    license = stdenv.lib.licenses.unfree;
+    maintainers = with stdenv.lib.maintainers; [ taku0 ];
+    platforms = [ "x86_64-linux" ];
+    # Application crashed with an unhandled SIGSEGV
+    # Not on all systems, though. Video driver problem?
+    broken = false;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/next/default.nix b/nixpkgs/pkgs/applications/networking/browsers/next/default.nix
new file mode 100644
index 000000000000..e03f918a587c
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/next/default.nix
@@ -0,0 +1,95 @@
+{ stdenv
+, fetchFromGitHub
+, lispPackages
+, sbcl
+, callPackage
+}:
+
+let
+
+  # This is the wrapped webkitgtk platform port that we hardcode into the Lisp Core.
+  # See https://github.com/atlas-engineer/next/tree/master/ports#next-platform-ports
+  next-gtk-webkit = callPackage ./next-gtk-webkit.nix {};
+
+in
+
+stdenv.mkDerivation rec {
+  pname = "next";
+  version = "1.5.0";
+
+  src = fetchFromGitHub {
+    owner = "atlas-engineer";
+    repo = "next";
+    rev = version;
+    sha256 = "1gqkp185wcwaxr8py90hqk44nqjblrrdwvig19gizrbzr2gx2zhy";
+  };
+
+  nativeBuildInputs = [
+    sbcl
+  ] ++ (with lispPackages; [
+    prove-asdf
+    trivial-features
+  ]);
+
+  buildInputs = with lispPackages; [
+    alexandria
+    bordeaux-threads
+    cl-annot
+    cl-ansi-text
+    cl-css
+    cl-json
+    cl-markup
+    cl-ppcre
+    cl-ppcre-unicode
+    cl-prevalence
+    closer-mop
+    dbus
+    dexador
+    ironclad
+    local-time
+    log4cl
+    lparallel
+    mk-string-metrics
+    parenscript
+    plump
+    quri
+    serapeum
+    sqlite
+    str
+    swank
+    trivia
+    trivial-clipboard
+    trivial-types
+    unix-opts
+  ];
+
+  # This reference is unfortunately not detected by Nix
+  propagatedBuildInputs = [ next-gtk-webkit ];
+
+  prePatch = ''
+    substituteInPlace source/ports/gtk-webkit.lisp \
+      --replace "next-gtk-webkit" "${next-gtk-webkit}/bin/next-gtk-webkit"
+  '';
+
+  buildPhase = ''
+    common-lisp.sh --eval "(require :asdf)" \
+                   --eval "(asdf:load-asd (truename \"next.asd\") :name \"next\")" \
+                   --eval '(asdf:make :next)' \
+                   --quit
+  '';
+
+  installPhase = ''
+    install -D -m0755 next $out/bin/next
+  '';
+
+  # Stripping destroys the generated SBCL image
+  dontStrip = true;
+
+  meta = with stdenv.lib; {
+    description = "Infinitely extensible web-browser (with Lisp development files using WebKitGTK platform port)";
+    homepage = "https://next.atlas.engineer";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.lewo ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/next/next-gtk-webkit.nix b/nixpkgs/pkgs/applications/networking/browsers/next/next-gtk-webkit.nix
new file mode 100644
index 000000000000..8039c5492408
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/next/next-gtk-webkit.nix
@@ -0,0 +1,50 @@
+# https://github.com/atlas-engineer/next/tree/master/ports/gtk-webkit
+
+{ stdenv
+, pkg-config
+, next
+, webkitgtk
+, gtk3
+, glib
+, gsettings-desktop-schemas
+, glib-networking
+, gst_all_1
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "next-gtk-webkit";
+  inherit (next) src version;
+
+  nativeBuildInputs = [
+    pkg-config
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    glib
+    glib-networking
+    gsettings-desktop-schemas
+    gtk3
+    webkitgtk
+    gst_all_1.gst-plugins-base
+    gst_all_1.gstreamer
+  ];
+
+  makeFlags = [
+    "gtk-webkit"
+    "PREFIX=${placeholder "out"}"
+  ];
+
+  installTargets =  [
+    "install-gtk-webkit"
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Infinitely extensible web-browser (user interface only)";
+    homepage = "https://next.atlas.engineer";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.lewo ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/opera/default.nix b/nixpkgs/pkgs/applications/networking/browsers/opera/default.nix
new file mode 100644
index 000000000000..686ffee91488
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/opera/default.nix
@@ -0,0 +1,122 @@
+{ alsaLib
+, atk
+, cairo
+, cups
+, curl
+, dbus
+, dpkg
+, expat
+, fetchurl
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, gnome2
+, gtk3
+, lib
+, libX11
+, libxcb
+, libXScrnSaver
+, libXcomposite
+, libXcursor
+, libXdamage
+, libXext
+, libXfixes
+, libXi
+, libXrandr
+, libXrender
+, libXtst
+, libnotify
+, libpulseaudio
+, libuuid
+, nspr
+, nss
+, pango
+, stdenv
+, systemd
+, at-spi2-atk
+, at-spi2-core
+, autoPatchelfHook
+, wrapGAppsHook
+}:
+
+let
+
+  mirror = "https://get.geo.opera.com/pub/opera/desktop";
+
+in stdenv.mkDerivation rec {
+
+  pname = "opera";
+  version = "67.0.3575.31";
+
+  src = fetchurl {
+    url = "${mirror}/${version}/linux/${pname}-stable_${version}_amd64.deb";
+    sha256 = "1ghygin7xf5lwd77s8f6bag339di4alwlkqwjzlq20wzwx4lns4w";
+  };
+
+  unpackCmd = "${dpkg}/bin/dpkg-deb -x $curSrc .";
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    alsaLib
+    at-spi2-atk
+    at-spi2-core
+    atk
+    cairo
+    cups
+    curl
+    dbus
+    expat
+    fontconfig.lib
+    freetype
+    gdk-pixbuf
+    glib
+    gnome2.GConf
+    gtk3
+    libX11
+    libXScrnSaver
+    libXcomposite
+    libXcursor
+    libXdamage
+    libXext
+    libXfixes
+    libXi
+    libXrandr
+    libXrender
+    libXtst
+    libnotify
+    libuuid
+    libxcb
+    nspr
+    nss
+    pango
+    stdenv.cc.cc.lib
+  ];
+
+  runtimeDependencies = [
+    # Works fine without this except there is no sound.
+    libpulseaudio.out
+
+    # This is a little tricky. Without it the app starts then crashes. Then it
+    # brings up the crash report, which also crashes. `strace -f` hints at a
+    # missing libudev.so.0.
+    systemd.lib
+  ];
+
+  installPhase = ''
+    mkdir -p $out
+    cp -r . $out/
+    mv $out/lib/*/opera/*.so $out/lib/
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.opera.com";
+    description = "Web browser";
+    platforms = [ "x86_64-linux" ];
+    license = licenses.unfree;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/palemoon/default.nix b/nixpkgs/pkgs/applications/networking/browsers/palemoon/default.nix
new file mode 100644
index 000000000000..7c010b91a1e6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/palemoon/default.nix
@@ -0,0 +1,133 @@
+{ stdenv, fetchFromGitHub, makeDesktopItem
+, pkgconfig, autoconf213, alsaLib, bzip2, cairo
+, dbus, dbus-glib, ffmpeg, file, fontconfig, freetype
+, gnome2, gnum4, gtk2, hunspell, libevent, libjpeg
+, libnotify, libstartup_notification, makeWrapper
+, libGLU, libGL, perl, python, libpulseaudio
+, unzip, xorg, wget, which, yasm, zip, zlib
+}:
+
+let
+
+  libPath = stdenv.lib.makeLibraryPath [ ffmpeg ];
+
+in stdenv.mkDerivation rec {
+  pname = "palemoon";
+  version = "28.8.4";
+
+  src = fetchFromGitHub {
+    owner  = "MoonchildProductions";
+    repo   = "UXP";
+    rev    = "PM${version}_Release";
+    sha256 = "1k2j4rlgjwkns3a592pbiwwhrpja3fachvzby1his3d1mhdvyc6f";
+  };
+
+  desktopItem = makeDesktopItem {
+    name = "palemoon";
+    exec = "palemoon %U";
+    icon = "palemoon";
+    desktopName = "Pale Moon";
+    genericName = "Web Browser";
+    categories = "Application;Network;WebBrowser;";
+    mimeType = stdenv.lib.concatStringsSep ";" [
+      "text/html"
+      "text/xml"
+      "application/xhtml+xml"
+      "application/vnd.mozilla.xul+xml"
+      "x-scheme-handler/http"
+      "x-scheme-handler/https"
+      "x-scheme-handler/ftp"
+    ];
+  };
+
+  buildInputs = [
+    alsaLib bzip2 cairo dbus dbus-glib ffmpeg file fontconfig freetype
+    gnome2.GConf gnum4 gtk2 hunspell libevent libjpeg libnotify
+    libstartup_notification makeWrapper libGLU libGL perl
+    pkgconfig python libpulseaudio unzip wget which yasm zip zlib
+  ] ++ (with xorg; [
+    libX11 libXext libXft libXi libXrender libXScrnSaver
+    libXt pixman xorgproto
+  ]);
+
+  enableParallelBuilding = true;
+
+  configurePhase = ''
+    export MOZBUILD_STATE_PATH=$(pwd)/mozbuild
+    export MOZCONFIG=$(pwd)/mozconfig
+    export MOZ_NOSPAM=1
+    export builddir=$(pwd)/pmbuild
+
+    echo > $MOZCONFIG "
+    mk_add_options AUTOCLOBBER=1
+    mk_add_options MOZ_OBJDIR=$builddir
+    ac_add_options --enable-application=palemoon
+
+    ac_add_options --enable-optimize='-O2'
+
+    # Please see https://www.palemoon.org/redist.shtml for restrictions when using the official branding.
+    ac_add_options --enable-official-branding
+    export MOZILLA_OFFICIAL=1
+
+    ac_add_options --enable-default-toolkit=cairo-gtk2
+    ac_add_options --enable-jemalloc
+    ac_add_options --enable-strip
+    ac_add_options --with-pthreads
+
+    ac_add_options --disable-tests
+    ac_add_options --disable-eme
+    ac_add_options --disable-parental-controls
+    ac_add_options --disable-accessibility
+    ac_add_options --disable-webrtc
+    ac_add_options --disable-gamepad
+    ac_add_options --disable-necko-wifi
+    ac_add_options --disable-updater
+
+    ac_add_options --x-libraries=${xorg.libX11.out}/lib
+
+    ac_add_options --prefix=$out
+    mk_add_options MOZ_MAKE_FLAGS='-j$NIX_BUILD_CORES'
+    mk_add_options AUTOCONF=${autoconf213}/bin/autoconf
+    "
+  '';
+
+  buildPhase = ''
+    $src/mach build
+  '';
+
+  installPhase = ''
+    $src/mach install
+
+    mkdir -p $out/share/applications
+    cp ${desktopItem}/share/applications/* $out/share/applications
+
+    for n in 16 22 24 32 48 256; do
+      size=$n"x"$n
+      mkdir -p $out/share/icons/hicolor/$size/apps
+      cp $src/application/palemoon/branding/official/default$n.png \
+         $out/share/icons/hicolor/$size/apps/palemoon.png
+    done
+
+    wrapProgram $out/lib/palemoon-${version}/palemoon \
+      --prefix LD_LIBRARY_PATH : "${libPath}"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "An Open Source, Goanna-based web browser focusing on efficiency and customization";
+    longDescription = ''
+      Pale Moon is an Open Source, Goanna-based web browser focusing on
+      efficiency and customization.
+
+      Pale Moon offers you a browsing experience in a browser completely built
+      from its own, independently developed source that has been forked off from
+      Firefox/Mozilla code a number of years ago, with carefully selected
+      features and optimizations to improve the browser's stability and user
+      experience, while offering full customization and a growing collection of
+      extensions and themes to make the browser truly your own.
+    '';
+    homepage    = "https://www.palemoon.org/";
+    license     = licenses.mpl20;
+    maintainers = with maintainers; [ AndersonTorres OPNA2608 ];
+    platforms   = [ "i686-linux" "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/qtchan/default.nix b/nixpkgs/pkgs/applications/networking/browsers/qtchan/default.nix
new file mode 100644
index 000000000000..9a4d61a50aee
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/qtchan/default.nix
@@ -0,0 +1,31 @@
+{ mkDerivation, lib, fetchFromGitHub, qmake, qtbase }:
+
+mkDerivation rec {
+  pname = "qtchan";
+  version = "1.0.1";
+
+  src = fetchFromGitHub {
+    owner  = "siavash119";
+    repo   = "qtchan";
+    rev    = "v${version}";
+    sha256 = "1x11m1kwqindzc0dkpfifcglsb362impaxs85kgzx50p898sz9ll";
+  };
+
+  enableParallelBuilding = true;
+  nativeBuildInputs = [ qmake ];
+  buildInputs = [ qtbase ];
+  qmakeFlags = [ "CONFIG-=app_bundle" ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp qtchan $out/bin
+  '';
+
+  meta = with lib; {
+    description = "4chan browser in qt5";
+    homepage    = "https://github.com/siavash119/qtchan";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ chiiruno ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/default.nix b/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/default.nix
new file mode 100644
index 000000000000..537bb0ebf2ec
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/default.nix
@@ -0,0 +1,113 @@
+{ stdenv, lib, fetchurl, fetchzip, python3Packages
+, mkDerivationWith, wrapQtAppsHook, wrapGAppsHook, qtbase, glib-networking
+, asciidoc, docbook_xml_dtd_45, docbook_xsl, libxml2
+, libxslt, gst_all_1 ? null
+, withPdfReader        ? true
+, withMediaPlayback    ? true
+}:
+
+assert withMediaPlayback -> gst_all_1 != null;
+
+let
+  pdfjs = let
+    version = "2.3.200";
+  in
+  fetchzip rec {
+    name = "pdfjs-${version}";
+    url = "https://github.com/mozilla/pdf.js/releases/download/v${version}/${name}-dist.zip";
+    sha256 = "1fpxsw0hzahccyng08acvc7g0gk29j2x701p6w6fg1718mvcrm1q";
+    stripRoot = false;
+  };
+
+in mkDerivationWith python3Packages.buildPythonApplication rec {
+  pname = "qutebrowser";
+  version = "1.10.1";
+
+  # the release tarballs are different from the git checkout!
+  src = fetchurl {
+    url = "https://github.com/qutebrowser/qutebrowser/releases/download/v${version}/${pname}-${version}.tar.gz";
+    sha256 = "06bcnsfb4kz92bh8xjxwaghhy9x2mmcb76wk3fv868jb1ga75vd8";
+  };
+
+  # Needs tox
+  doCheck = false;
+
+  buildInputs = [
+    qtbase
+    glib-networking
+  ] ++ lib.optionals withMediaPlayback (with gst_all_1; [
+    gst-plugins-base gst-plugins-good
+    gst-plugins-bad gst-plugins-ugly gst-libav
+  ]);
+
+  nativeBuildInputs = [
+    wrapQtAppsHook wrapGAppsHook asciidoc
+    docbook_xml_dtd_45 docbook_xsl libxml2 libxslt
+  ];
+
+  propagatedBuildInputs = with python3Packages; [
+    pyyaml pyqt5 pyqtwebengine jinja2 pygments
+    pypeg2 cssutils pyopengl attrs setuptools
+    # scripts and userscripts libs
+    tldextract beautifulsoup4
+    pyreadability pykeepass stem
+  ];
+
+  patches = [
+    ./fix-restart.patch
+  ];
+
+  dontWrapGApps = true;
+  dontWrapQtApps = true;
+
+  postPatch = ''
+    substituteInPlace qutebrowser/app.py --subst-var-by qutebrowser "$out/bin/qutebrowser"
+
+    sed -i "s,/usr/share/,$out/share/,g" qutebrowser/utils/standarddir.py
+  '' + lib.optionalString withPdfReader ''
+    sed -i "s,/usr/share/pdf.js,${pdfjs},g" qutebrowser/browser/pdfjs.py
+  '';
+
+  postBuild = ''
+    a2x -f manpage doc/qutebrowser.1.asciidoc
+  '';
+
+  postInstall = ''
+    install -Dm644 doc/qutebrowser.1 "$out/share/man/man1/qutebrowser.1"
+    install -Dm644 misc/org.qutebrowser.qutebrowser.desktop \
+        "$out/share/applications/org.qutebrowser.qutebrowser.desktop"
+
+    # Install icons
+    for i in 16 24 32 48 64 128 256 512; do
+        install -Dm644 "icons/qutebrowser-''${i}x''${i}.png" \
+            "$out/share/icons/hicolor/''${i}x''${i}/apps/qutebrowser.png"
+    done
+    install -Dm644 icons/qutebrowser.svg \
+        "$out/share/icons/hicolor/scalable/apps/qutebrowser.svg"
+
+    # Install scripts
+    sed -i "s,/usr/bin/,$out/bin/,g" scripts/open_url_in_instance.sh
+    install -Dm755 -t "$out/share/qutebrowser/scripts/" $(find scripts -type f)
+    install -Dm755 -t "$out/share/qutebrowser/userscripts/" misc/userscripts/*
+
+    # Patch python scripts
+    buildPythonPath "$out $propagatedBuildInputs"
+    scripts=$(grep -rl python "$out"/share/qutebrowser/{user,}scripts/)
+    for i in $scripts; do
+      patchPythonScript "$i"
+    done
+  '';
+
+  postFixup = ''
+    wrapProgram $out/bin/qutebrowser \
+      "''${gappsWrapperArgs[@]}" \
+      "''${qtWrapperArgs[@]}"
+  '';
+
+  meta = with stdenv.lib; {
+    homepage    = "https://github.com/The-Compiler/qutebrowser";
+    description = "Keyboard-focused browser with a minimal GUI";
+    license     = licenses.gpl3Plus;
+    maintainers = with maintainers; [ jagajaga rnhmjoj ebzzry ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/fix-restart.patch b/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/fix-restart.patch
new file mode 100644
index 000000000000..d54a37fe71fe
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/qutebrowser/fix-restart.patch
@@ -0,0 +1,19 @@
+diff --git a/quitter.py b/quitterb.py
+index a42b9d0..f544ccb 100644
+--- a/qutebrowser/misc/quitter.py
++++ b/qutebrowser/misc/quitter.py
+@@ -112,13 +112,7 @@ class Quitter(QObject):
+         Return:
+             The commandline as a list of strings.
+         """
+-        if os.path.basename(sys.argv[0]) == 'qutebrowser':
+-            # Launched via launcher script
+-            args = [sys.argv[0]]
+-        elif hasattr(sys, 'frozen'):
+-            args = [sys.executable]
+-        else:
+-            args = [sys.executable, '-m', 'qutebrowser']
++        args = ['@qutebrowser@']
+ 
+         # Add all open pages so they get reopened.
+         page_args = []  # type: typing.MutableSequence[str]
diff --git a/nixpkgs/pkgs/applications/networking/browsers/surf/default.nix b/nixpkgs/pkgs/applications/networking/browsers/surf/default.nix
new file mode 100644
index 000000000000..03571469da1f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/surf/default.nix
@@ -0,0 +1,47 @@
+{ lib, stdenv, fetchurl
+, pkgconfig, wrapGAppsHook
+, glib, glib-networking, gsettings-desktop-schemas, gtk, libsoup, webkitgtk
+, xorg, dmenu, findutils, gnused, coreutils
+, patches ? null
+}:
+
+stdenv.mkDerivation rec {
+  pname = "surf";
+  version = "2.0";
+
+  src = fetchurl {
+    url = "https://dl.suckless.org/surf/surf-${version}.tar.gz";
+    sha256 = "07cmajyafljigy10d21kkyvv5jf3hxkx06pz3rwwk3y3c9x4rvps";
+  };
+
+  nativeBuildInputs = [ pkgconfig wrapGAppsHook ];
+  buildInputs = [ glib glib-networking gsettings-desktop-schemas gtk libsoup webkitgtk ];
+
+  inherit patches;
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  # Add run-time dependencies to PATH. Append them to PATH so the user can
+  # override the dependencies with their own PATH.
+  preFixup = let
+    depsPath = lib.makeBinPath [ xorg.xprop dmenu findutils gnused coreutils ];
+  in ''
+    gappsWrapperArgs+=(
+      --suffix PATH : ${depsPath}
+    )
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A simple web browser based on WebKit/GTK";
+    longDescription = ''
+      Surf is a simple web browser based on WebKit/GTK. It is able to display
+      websites and follow links. It supports the XEmbed protocol which makes it
+      possible to embed it in another application. Furthermore, one can point
+      surf to another URI by setting its XProperties.
+    '';
+    homepage = "https://surf.suckless.org";
+    license = licenses.mit;
+    platforms = webkitgtk.meta.platforms;
+    maintainers = with maintainers; [ joachifm ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle-bin/default.nix b/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle-bin/default.nix
new file mode 100644
index 000000000000..97a03ccbab5b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle-bin/default.nix
@@ -0,0 +1,412 @@
+{ stdenv
+, fetchurl
+, makeDesktopItem
+
+# Common run-time dependencies
+, zlib
+
+# libxul run-time dependencies
+, atk
+, cairo
+, dbus
+, dbus-glib
+, fontconfig
+, freetype
+, gdk-pixbuf
+, glib
+, gtk3
+, libxcb
+, libX11
+, libXext
+, libXrender
+, libXt
+, pango
+
+, audioSupport ? mediaSupport
+, pulseaudioSupport ? false
+, libpulseaudio
+, apulse
+
+# Media support (implies audio support)
+, mediaSupport ? true
+, ffmpeg
+
+, gmp
+
+# Pluggable transport dependencies
+, python27
+
+# Wrapper runtime
+, coreutils
+, glibcLocales
+, gnome3
+, runtimeShell
+, shared-mime-info
+, gsettings-desktop-schemas
+
+# Hardening
+, graphene-hardened-malloc
+, useHardenedMalloc ? graphene-hardened-malloc != null && builtins.elem stdenv.system graphene-hardened-malloc.meta.platforms
+
+# Whether to disable multiprocess support to work around crashing tabs
+# TODO: fix the underlying problem instead of this terrible work-around
+, disableContentSandbox ? true
+
+# Extra preferences
+, extraPrefs ? ""
+}:
+
+with stdenv.lib;
+
+let
+  libPath = makeLibraryPath libPkgs;
+
+  libPkgs = [
+    atk
+    cairo
+    dbus
+    dbus-glib
+    fontconfig
+    freetype
+    gdk-pixbuf
+    glib
+    gtk3
+    libxcb
+    libX11
+    libXext
+    libXrender
+    libXt
+    pango
+    stdenv.cc.cc
+    stdenv.cc.libc
+    zlib
+  ]
+  ++ optionals pulseaudioSupport [ libpulseaudio ]
+  ++ optionals mediaSupport [
+    ffmpeg
+  ];
+
+  # Library search path for the fte transport
+  fteLibPath = makeLibraryPath [ stdenv.cc.cc gmp ];
+
+  # Upstream source
+  version = "9.0.9";
+
+  lang = "en-US";
+
+  srcs = {
+    x86_64-linux = fetchurl {
+      url = "https://dist.torproject.org/torbrowser/${version}/tor-browser-linux64-${version}_${lang}.tar.xz";
+      sha256 = "0ws4s0jn559j1ih60wqspxvr5wpqww29kzk0xzzbr56wfyahp4fg";
+    };
+
+    i686-linux = fetchurl {
+      url = "https://dist.torproject.org/torbrowser/${version}/tor-browser-linux32-${version}_${lang}.tar.xz";
+      sha256 = "0sv73jlv0qwlkxgqkmqg1flsa9lbkxa4yahny5wrfgsbw74xibkl";
+    };
+  };
+in
+
+stdenv.mkDerivation rec {
+  pname = "tor-browser-bundle-bin";
+  inherit version;
+
+  src = srcs.${stdenv.hostPlatform.system} or (throw "unsupported system: ${stdenv.hostPlatform.system}");
+
+  preferLocalBuild = true;
+  allowSubstitutes = false;
+
+  desktopItem = makeDesktopItem {
+    name = "torbrowser";
+    exec = "tor-browser";
+    icon = "torbrowser";
+    desktopName = "Tor Browser";
+    genericName = "Web Browser";
+    comment = meta.description;
+    categories = "Network;WebBrowser;Security;";
+  };
+
+  buildCommand = ''
+    # For convenience ...
+    TBB_IN_STORE=$out/share/tor-browser
+    interp=$(< $NIX_CC/nix-support/dynamic-linker)
+
+    # Unpack & enter
+    mkdir -p "$TBB_IN_STORE"
+    tar xf "${src}" -C "$TBB_IN_STORE" --strip-components=2
+    pushd "$TBB_IN_STORE"
+
+    # Set ELF interpreter
+    for exe in firefox.real TorBrowser/Tor/tor ; do
+      echo "Setting ELF interpreter on $exe ..." >&2
+      patchelf --set-interpreter "$interp" "$exe"
+    done
+
+    # firefox is a wrapper that checks for a more recent libstdc++ & appends it to the ld path
+    mv firefox.real firefox
+
+    # The final libPath.  Note, we could split this into firefoxLibPath
+    # and torLibPath for accuracy, but this is more convenient ...
+    libPath=${libPath}:$TBB_IN_STORE:$TBB_IN_STORE/TorBrowser/Tor
+
+    # apulse uses a non-standard library path.  For now special-case it.
+    ${optionalString (audioSupport && !pulseaudioSupport) ''
+      libPath=${apulse}/lib/apulse:$libPath
+    ''}
+
+    # Fixup paths to pluggable transports.
+    sed -i TorBrowser/Data/Tor/torrc-defaults \
+        -e "s,./TorBrowser,$TBB_IN_STORE/TorBrowser,g"
+
+    # Fixup obfs transport.  Work around patchelf failing to set
+    # interpreter for pre-compiled Go binaries by invoking the interpreter
+    # directly.
+    sed -i TorBrowser/Data/Tor/torrc-defaults \
+        -e "s|\(ClientTransportPlugin meek_lite,obfs2,obfs3,obfs4,scramblesuit\) exec|\1 exec $interp|"
+
+    # Similarly fixup snowflake
+    sed -i TorBrowser/Data/Tor/torrc-defaults \
+        -e "s|\(ClientTransportPlugin snowflake\) exec|\1 exec $interp|"
+
+
+    # Prepare for autoconfig.
+    #
+    # See https://developer.mozilla.org/en-US/Firefox/Enterprise_deployment
+    cat >defaults/pref/autoconfig.js <<EOF
+    //
+    pref("general.config.filename", "mozilla.cfg");
+    pref("general.config.obscure_value", 0);
+    EOF
+
+    # Hard-coded Firefox preferences.
+    cat >mozilla.cfg <<EOF
+    // First line must be a comment
+
+    // Always update via Nixpkgs
+    lockPref("app.update.auto", false);
+    lockPref("app.update.enabled", false);
+    lockPref("extensions.update.autoUpdateDefault", false);
+    lockPref("extensions.update.enabled", false);
+    lockPref("extensions.torbutton.versioncheck_enabled", false);
+
+    // User should never change these.  Locking prevents these
+    // values from being written to prefs.js, avoiding Store
+    // path capture.
+    lockPref("extensions.torlauncher.torrc-defaults_path", "$TBB_IN_STORE/TorBrowser/Data/Tor/torrc-defaults");
+    lockPref("extensions.torlauncher.tor_path", "$TBB_IN_STORE/TorBrowser/Tor/tor");
+
+    // Reset pref that captures store paths.
+    clearPref("extensions.xpiState");
+
+    // Stop obnoxious first-run redirection.
+    lockPref("noscript.firstRunRedirection", false);
+
+    // Insist on using IPC for communicating with Tor
+    //
+    // Defaults to creating \$TBB_HOME/TorBrowser/Data/Tor/{socks,control}.socket
+    lockPref("extensions.torlauncher.control_port_use_ipc", true);
+    lockPref("extensions.torlauncher.socks_port_use_ipc", true);
+
+    // Optionally disable multiprocess support.  We always set this to ensure that
+    // toggling the pref takes effect.
+    lockPref("browser.tabs.remote.autostart.2", ${if disableContentSandbox then "false" else "true"});
+
+    // Allow sandbox access to sound devices if using ALSA directly
+    ${if (audioSupport && !pulseaudioSupport) then ''
+      pref("security.sandbox.content.write_path_whitelist", "/dev/snd/");
+    '' else ''
+      clearPref("security.sandbox.content.write_path_whitelist");
+    ''}
+
+    ${optionalString (extraPrefs != "") ''
+      ${extraPrefs}
+    ''}
+    EOF
+
+    # Hard-code path to TBB fonts; see also FONTCONFIG_FILE in
+    # the wrapper below.
+    FONTCONFIG_FILE=$TBB_IN_STORE/TorBrowser/Data/fontconfig/fonts.conf
+    sed -i "$FONTCONFIG_FILE" \
+        -e "s,<dir>fonts</dir>,<dir>$TBB_IN_STORE/fonts</dir>,"
+
+    # Preload extensions by moving into the runtime instead of storing under the
+    # user's profile directory.
+    mkdir -p "$TBB_IN_STORE/browser/extensions"
+    mv "$TBB_IN_STORE/TorBrowser/Data/Browser/profile.default/extensions/"* \
+      "$TBB_IN_STORE/browser/extensions"
+
+    # Hard-code paths to geoip data files.  TBB resolves the geoip files
+    # relative to torrc-defaults_path but if we do not hard-code them
+    # here, these paths end up being written to the torrc in the user's
+    # state dir.
+    cat >>TorBrowser/Data/Tor/torrc-defaults <<EOF
+    GeoIPFile $TBB_IN_STORE/TorBrowser/Data/Tor/geoip
+    GeoIPv6File $TBB_IN_STORE/TorBrowser/Data/Tor/geoip6
+    EOF
+
+    WRAPPER_LD_PRELOAD=${optionalString useHardenedMalloc
+      "${graphene-hardened-malloc}/lib/libhardened_malloc.so"}
+
+    WRAPPER_XDG_DATA_DIRS=${concatMapStringsSep ":" (x: "${x}/share") [
+      gnome3.adwaita-icon-theme
+      shared-mime-info
+    ]}
+    WRAPPER_XDG_DATA_DIRS+=":"${concatMapStringsSep ":" (x: "${x}/share/gsettings-schemas/${x.name}") [
+      glib
+      gsettings-desktop-schemas
+      gtk3
+    ]};
+
+    # Generate wrapper
+    mkdir -p $out/bin
+    cat > "$out/bin/tor-browser" << EOF
+    #! ${runtimeShell}
+    set -o errexit -o nounset
+
+    PATH=${makeBinPath [ coreutils ]}
+    export LC_ALL=C
+    export LOCALE_ARCHIVE=${glibcLocales}/lib/locale/locale-archive
+
+    # Enter local state directory.
+    REAL_HOME=\$HOME
+    TBB_HOME=\''${TBB_HOME:-''${XDG_DATA_HOME:-\$REAL_HOME/.local/share}/tor-browser}
+    HOME=\$TBB_HOME
+
+    mkdir -p "\$HOME"
+    cd "\$HOME"
+
+    # Initialize empty TBB local state directory hierarchy.  We
+    # intentionally mirror the layout that TBB would see if executed from
+    # the unpacked bundle dir.
+    mkdir -p "\$HOME/TorBrowser" "\$HOME/TorBrowser/Data"
+
+    # Initialize the Tor data directory.
+    mkdir -p "\$HOME/TorBrowser/Data/Tor"
+
+    # TBB will fail if ownership is too permissive
+    chmod 0700 "\$HOME/TorBrowser/Data/Tor"
+
+    # Initialize the browser profile state.  Note that the only data
+    # copied from the Store payload is the initial bookmark file, which is
+    # never updated once created.  All other files under user's profile
+    # dir are generated by TBB.
+    mkdir -p "\$HOME/TorBrowser/Data/Browser/profile.default"
+    cp -u --no-preserve=mode,owner "$TBB_IN_STORE/TorBrowser/Data/Browser/profile.default/bookmarks.html" \
+      "\$HOME/TorBrowser/Data/Browser/profile.default/bookmarks.html"
+
+    # Clear out some files that tend to capture store references but are
+    # easily generated by firefox at startup.
+    rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/{addonStartup.json.lz4,compatibility.ini,extensions.ini,extensions.json}
+    rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/startupCache/*
+
+    # XDG
+    : "\''${XDG_RUNTIME_DIR:=/run/user/\$(id -u)}"
+    : "\''${XDG_CONFIG_HOME:=\$REAL_HOME/.config}"
+
+    ${optionalString pulseaudioSupport ''
+      # Figure out some envvars for pulseaudio
+      : "\''${PULSE_SERVER:=\$XDG_RUNTIME_DIR/pulse/native}"
+      : "\''${PULSE_COOKIE:=\$XDG_CONFIG_HOME/pulse/cookie}"
+    ''}
+
+    # Font cache files capture store paths; clear them out on the off
+    # chance that TBB would continue using old font files.
+    rm -rf "\$HOME/.cache/fontconfig"
+
+    # Lift-off
+    #
+    # XAUTHORITY and DISPLAY are required for TBB to work at all.
+    #
+    # DBUS_SESSION_BUS_ADDRESS is inherited to avoid auto-launch; to
+    # prevent that, set it to an empty/invalid value prior to running
+    # tor-browser.
+    #
+    # PULSE_SERVER is necessary for audio playback.
+    #
+    # Setting FONTCONFIG_FILE is required to make fontconfig read the TBB
+    # fonts.conf; upstream uses FONTCONFIG_PATH, but FC_DEBUG=1024
+    # indicates the system fonts.conf being used instead.
+    #
+    # XDG_DATA_DIRS is set to prevent searching system dirs (looking for .desktop & icons)
+    exec env -i \
+      LD_PRELOAD=$WRAPPER_LD_PRELOAD \
+      \
+      TZ=":" \
+      TZDIR="\''${TZDIR:-}" \
+      LOCALE_ARCHIVE="\$LOCALE_ARCHIVE" \
+      \
+      TMPDIR="\''${TMPDIR:-/tmp}" \
+      HOME="\$HOME" \
+      XAUTHORITY="\''${XAUTHORITY:-\$HOME/.Xauthority}" \
+      DISPLAY="\$DISPLAY" \
+      DBUS_SESSION_BUS_ADDRESS="\''${DBUS_SESSION_BUS_ADDRESS:-unix:path=\$XDG_RUNTIME_DIR/bus}" \\
+      \
+      XDG_DATA_HOME="\$HOME/.local/share" \
+      XDG_DATA_DIRS="$WRAPPER_XDG_DATA_DIRS" \
+      \
+      PULSE_SERVER="\''${PULSE_SERVER:-}" \
+      PULSE_COOKIE="\''${PULSE_COOKIE:-}" \
+      \
+      APULSE_PLAYBACK_DEVICE="\''${APULSE_PLAYBACK_DEVICE:-plug:dmix}" \
+      \
+      TOR_SKIP_LAUNCH="\''${TOR_SKIP_LAUNCH:-}" \
+      TOR_CONTROL_PORT="\''${TOR_CONTROL_PORT:-}" \
+      TOR_SOCKS_PORT="\''${TOR_SOCKS_PORT:-}" \
+      \
+      FONTCONFIG_FILE="$FONTCONFIG_FILE" \
+      \
+      LD_LIBRARY_PATH="$libPath" \
+      \
+      "$TBB_IN_STORE/firefox" \
+        --class "Tor Browser" \
+        -no-remote \
+        -profile "\$HOME/TorBrowser/Data/Browser/profile.default" \
+        "\''${@}"
+    EOF
+    chmod +x $out/bin/tor-browser
+
+    # Easier access to docs
+    mkdir -p $out/share/doc
+    ln -s $TBB_IN_STORE/TorBrowser/Docs $out/share/doc/tor-browser
+
+    # Install .desktop item
+    mkdir -p $out/share/applications
+    cp $desktopItem/share/applications"/"* $out/share/applications
+    sed -i $out/share/applications/torbrowser.desktop \
+        -e "s,Exec=.*,Exec=$out/bin/tor-browser," \
+        -e "s,Icon=.*,Icon=tor-browser,"
+    for i in 16 32 48 64 128; do
+      mkdir -p $out/share/icons/hicolor/''${i}x''${i}/apps/
+      ln -s $out/share/tor-browser/browser/chrome/icons/default/default$i.png $out/share/icons/hicolor/''${i}x''${i}/apps/tor-browser.png
+    done
+
+    # Check installed apps
+    echo "Checking bundled Tor ..."
+    LD_LIBRARY_PATH=$libPath $TBB_IN_STORE/TorBrowser/Tor/tor --version >/dev/null
+
+    echo "Checking tor-browser wrapper ..."
+    DISPLAY="" XAUTHORITY="" DBUS_SESSION_BUS_ADDRESS="" TBB_HOME=$(mktemp -d) \
+      $out/bin/tor-browser --version >/dev/null
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Tor Browser Bundle built by torproject.org";
+    longDescription = ''
+      Tor Browser Bundle is a bundle of the Tor daemon, Tor Browser (heavily patched version of
+      Firefox), several essential extensions for Tor Browser, and some tools that glue those
+      together with a convenient UI.
+
+      `tor-browser-bundle-bin` package is the official version built by torproject.org patched with
+      `patchelf` to work under nix and with bundled scripts adapted to the read-only nature of
+      the `/nix/store`.
+    '';
+    homepage = "https://www.torproject.org/";
+    platforms = attrNames srcs;
+    maintainers = with maintainers; [ offline matejc doublec thoughtpolice joachifm hax404 cap ];
+    hydraPlatforms = [];
+    # MPL2.0+, GPL+, &c.  While it's not entirely clear whether
+    # the compound is "libre" in a strict sense (some components place certain
+    # restrictions on redistribution), it's free enough for our purposes.
+    license = licenses.free;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle/extensions.nix b/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle/extensions.nix
new file mode 100644
index 000000000000..7356768f3973
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/tor-browser-bundle/extensions.nix
@@ -0,0 +1,111 @@
+{ stdenv
+, fetchgit
+, fetchurl
+
+# common
+, zip
+
+# HTTPS Everywhere
+, git
+, libxml2 # xmllint
+, python27
+, python27Packages
+, rsync
+}:
+
+{
+  https-everywhere = stdenv.mkDerivation rec {
+    pname = "https-everywhere";
+    version = "2017.10.4";
+
+    extid = "https-everywhere-eff@eff.org";
+
+    src = fetchgit {
+      url = "https://git.torproject.org/https-everywhere.git";
+      rev = "refs/tags/${version}";
+      sha256 = "1g7971xygnhagnb25xjdf6mli6091ai9igx42d0ww88g8i0cqfzj";
+      fetchSubmodules = true; # for translations, TODO: remove
+    };
+
+    nativeBuildInputs = [
+      git
+      libxml2 # xmllint
+      python27
+      python27Packages.lxml
+      rsync
+      zip
+    ];
+
+    buildPhase = ''
+      $shell ./makexpi.sh ${version} --no-recurse
+    '';
+
+    installPhase = ''
+      install -m 444 -D pkg/https-everywhere-$version-eff.xpi "$out/$extid.xpi"
+    '';
+  };
+
+  noscript = stdenv.mkDerivation rec {
+    pname = "noscript";
+    version = "5.1.2";
+
+    extid = "{73a6fe31-595d-460b-a920-fcc0f8843232}";
+
+    src = fetchurl {
+      url = "https://secure.informaction.com/download/releases/noscript-${version}.xpi";
+      sha256 = "1fzspdiwhjabwz1yxb3gzj7giz9jbc1xxm65i93rvhzcp537cs42";
+    };
+
+    dontUnpack = true;
+
+    installPhase = ''
+      install -m 444 -D $src "$out/$extid.xpi"
+    '';
+  };
+
+  torbutton = stdenv.mkDerivation rec {
+    pname = "torbutton";
+    version = "1.9.8.1";
+
+    extid = "torbutton@torproject.org";
+
+    src = fetchgit {
+      url = "https://git.torproject.org/torbutton.git";
+      rev = "refs/tags/${version}";
+      sha256 = "1amp0c9ky0a7fsa0bcbi6n6ginw7s2g3an4rj7kvc1lxmrcsm65l";
+    };
+
+    nativeBuildInputs = [ zip ];
+
+    buildPhase = ''
+      $shell ./makexpi.sh
+    '';
+
+    installPhase = ''
+      install -m 444 -D pkg/torbutton-$version.xpi "$out/$extid.xpi"
+    '';
+  };
+
+  tor-launcher = stdenv.mkDerivation rec {
+    pname = "tor-launcher";
+    version = "0.2.13";
+
+    extid = "tor-launcher@torproject.org";
+
+    src = fetchgit {
+      url = "https://git.torproject.org/tor-launcher.git";
+      rev = "refs/tags/${version}";
+      sha256 = "1f98v88y2clwvjiw77kxqc9cacp5h0489a540nc2wmsx7vnskrq0";
+    };
+
+    nativeBuildInputs = [ zip ];
+
+    buildPhase = ''
+      make package
+    '';
+
+    installPhase = ''
+      install -m 444 -D pkg/tor-launcher-$version.xpi "$out/$extid.xpi"
+    '';
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/vimb/default.nix b/nixpkgs/pkgs/applications/networking/browsers/vimb/default.nix
new file mode 100644
index 000000000000..099d81c99f80
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/vimb/default.nix
@@ -0,0 +1,34 @@
+{ stdenv, fetchFromGitHub, pkgconfig, libsoup, webkitgtk, gtk3, glib-networking
+, gsettings-desktop-schemas, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "vimb";
+  version = "3.3.0";
+
+  src = fetchFromGitHub {
+    owner = "fanglingsu";
+    repo = "vimb";
+    rev = version;
+    sha256 = "1qg18z2gnsli9qgrqfhqfrsi6g9mcgr90w8yab28nxrq4aha6brf";
+  };
+
+  nativeBuildInputs = [ wrapGAppsHook pkgconfig ];
+  buildInputs = [ gtk3 libsoup webkitgtk glib-networking gsettings-desktop-schemas ];
+
+  makeFlags = [ "PREFIX=${placeholder "out"}" ];
+
+  meta = {
+    description = "A Vim-like browser";
+    longDescription = ''
+      A fast and lightweight vim like web browser based on the webkit web
+      browser engine and the GTK toolkit. Vimb is modal like the great vim
+      editor and also easily configurable during runtime. Vimb is mostly
+      keyboard driven and does not detract you from your daily work.
+    '';
+    homepage = "https://fanglingsu.github.io/vimb/";
+    license = stdenv.lib.licenses.gpl3;
+    maintainers = [];
+    platforms = with stdenv.lib.platforms; linux;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/vivaldi/default.nix b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/default.nix
new file mode 100644
index 000000000000..776ed8f4471b
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/default.nix
@@ -0,0 +1,94 @@
+{ stdenv, fetchurl, zlib, libX11, libXext, libSM, libICE
+, libXfixes, libXt, libXi, libXcursor, libXScrnSaver, libXcomposite, libXdamage, libXtst, libXrandr
+, alsaLib, dbus, cups, libexif, ffmpeg, systemd
+, freetype, fontconfig, libXft, libXrender, libxcb, expat
+, libuuid
+, gstreamer, gst-plugins-base, libxml2
+, glib, gtk3, pango, gdk-pixbuf, cairo, atk, at-spi2-atk, at-spi2-core, gnome2
+, nss, nspr
+, patchelf, makeWrapper
+, isSnapshot ? false
+, proprietaryCodecs ? false, vivaldi-ffmpeg-codecs ? null
+, enableWidevine ? false, vivaldi-widevine ? null
+}:
+
+let
+  branch = if isSnapshot then "snapshot" else "stable";
+  vivaldiName = if isSnapshot then "vivaldi-snapshot" else "vivaldi";
+in stdenv.mkDerivation rec {
+  pname = "vivaldi";
+  version = "2.11.1811.52-1";
+
+  src = fetchurl {
+    url = "https://downloads.vivaldi.com/${branch}/vivaldi-${branch}_${version}_amd64.deb";
+    sha256 = "0bq9ggk75xzka2nbrnc7vghq8s7jjy9nbfmyrf51kf0nni1zg1fp";
+  };
+
+  unpackPhase = ''
+    ar vx $src
+    tar -xvf data.tar.xz
+  '';
+
+  nativeBuildInputs = [ patchelf makeWrapper ];
+
+  buildInputs = [
+    stdenv.cc.cc stdenv.cc.libc zlib libX11 libXt libXext libSM libICE libxcb
+    libXi libXft libXcursor libXfixes libXScrnSaver libXcomposite libXdamage libXtst libXrandr
+    atk at-spi2-atk at-spi2-core alsaLib dbus cups gtk3 gdk-pixbuf libexif ffmpeg systemd
+    freetype fontconfig libXrender libuuid expat glib nss nspr
+    gstreamer libxml2 gst-plugins-base pango cairo gnome2.GConf
+  ] ++ stdenv.lib.optional proprietaryCodecs vivaldi-ffmpeg-codecs;
+
+  libPath = stdenv.lib.makeLibraryPath buildInputs
+    + stdenv.lib.optionalString (stdenv.is64bit)
+      (":" + stdenv.lib.makeSearchPathOutput "lib" "lib64" buildInputs)
+    + ":$out/opt/${vivaldiName}/lib";
+
+  buildPhase = ''
+    echo "Patching Vivaldi binaries"
+    patchelf \
+      --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+      --set-rpath "${libPath}" \
+      opt/${vivaldiName}/vivaldi-bin
+  '' + stdenv.lib.optionalString proprietaryCodecs ''
+    ln -s ${vivaldi-ffmpeg-codecs}/lib/libffmpeg.so opt/${vivaldiName}/libffmpeg.so.''${version%\.*\.*}
+  '' + ''
+    echo "Finished patching Vivaldi binaries"
+  '';
+
+  dontPatchELF = true;
+  dontStrip    = true;
+
+  installPhase = ''
+    mkdir -p "$out"
+    cp -r opt "$out"
+    mkdir "$out/bin"
+    ln -s "$out/opt/${vivaldiName}/${vivaldiName}" "$out/bin/vivaldi"
+    mkdir -p "$out/share"
+    cp -r usr/share/{applications,xfce4} "$out"/share
+    substituteInPlace "$out"/share/applications/*.desktop \
+      --replace /usr/bin/${vivaldiName} "$out"/bin/vivaldi
+    substituteInPlace "$out"/share/applications/*.desktop \
+      --replace vivaldi-stable vivaldi
+    local d
+    for d in 16 22 24 32 48 64 128 256; do
+      mkdir -p "$out"/share/icons/hicolor/''${d}x''${d}/apps
+      ln -s \
+        "$out"/opt/${vivaldiName}/product_logo_''${d}.png \
+        "$out"/share/icons/hicolor/''${d}x''${d}/apps/vivaldi.png
+    done
+    wrapProgram "$out/bin/vivaldi" \
+      --suffix XDG_DATA_DIRS : ${gtk3}/share/gsettings-schemas/${gtk3.name}/ \
+      ${stdenv.lib.optionalString enableWidevine "--suffix LD_LIBRARY_PATH : ${libPath}"}
+  '' + stdenv.lib.optionalString enableWidevine ''
+    ln -sf ${vivaldi-widevine}/share/google/chrome/WidevineCdm $out/opt/${vivaldiName}/WidevineCdm
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A Browser for our Friends, powerful and personal";
+    homepage    = "https://vivaldi.com";
+    license     = licenses.unfree;
+    maintainers = with maintainers; [ otwieracz nequissimus ];
+    platforms   = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/vivaldi/ffmpeg-codecs.nix b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/ffmpeg-codecs.nix
new file mode 100644
index 000000000000..2643bd3e58d9
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/ffmpeg-codecs.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchurl
+, dpkg
+}:
+
+stdenv.mkDerivation rec {
+  name = "chromium-codecs-ffmpeg";
+  version = "78.0.3904.70";
+
+  src = fetchurl {
+    url = "https://launchpadlibrarian.net/449403909/${name}-extra_${version}-0ubuntu0.16.04.2_amd64.deb";
+    sha256 = "00j604nm49z6hbyw7xsxcvmdjf7117kb478plkpizzvmm3w72b9v";
+  };
+
+  buildInputs = [ dpkg ];
+
+  unpackPhase = ''
+    dpkg-deb -x $src .
+    find .
+  '';
+
+  installPhase = ''
+    install -vD usr/lib/chromium-browser/libffmpeg.so $out/lib/libffmpeg.so
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Additional support for proprietary codecs for Vivaldi";
+    homepage    = "https://ffmpeg.org/";
+    license     = licenses.lgpl21;
+    maintainers = with maintainers; [ betaboon lluchs ];
+    platforms   = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/vivaldi/update.sh b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/update.sh
new file mode 100755
index 000000000000..2e6c2853eb14
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/update.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p libarchive curl common-updater-scripts
+
+set -eu -o pipefail
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+root=../../../../..
+export NIXPKGS_ALLOW_UNFREE=1
+
+version() {
+  (cd "$root" && nix-instantiate --eval --strict -A "$1.version" | tr -d '"')
+}
+
+vivaldi_version_old=$(version vivaldi)
+vivaldi_version=$(curl -sS https://vivaldi.com/download/ | sed -rne 's/.*vivaldi-stable_([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+-[0-9]+)_amd64\.deb.*/\1/p')
+
+if [[ "$vivaldi_version" = "$vivaldi_version_old" ]]; then
+  echo "vivaldi is already up-to-date"
+  exit
+fi
+
+# Download vivaldi and save hash and file path.
+url="https://downloads.vivaldi.com/stable/vivaldi-stable_${vivaldi_version}_amd64.deb"
+mapfile -t prefetch < <(nix-prefetch-url --print-path "$url")
+hash=${prefetch[0]}
+path=${prefetch[1]}
+
+nixpkgs="$(git rev-parse --show-toplevel)"
+default_nix="$nixpkgs/pkgs/applications/networking/browsers/vivaldi/default.nix"
+ffmpeg_nix="$nixpkgs/pkgs/applications/networking/browsers/vivaldi/ffmpeg-codecs.nix"
+
+(cd "$root" && update-source-version vivaldi "$vivaldi_version" "$hash")
+
+git add "${default_nix}"
+git commit -m "vivaldi: ${vivaldi_version_old} -> ${vivaldi_version}"
+
+# Check vivaldi-ffmpeg-codecs version.
+chromium_version_old=$(version vivaldi-ffmpeg-codecs)
+chromium_version=$(bsdtar xOf "$path" data.tar.xz | bsdtar xOf - ./opt/vivaldi/vivaldi-bin | strings | grep '^[0-9]\{2,\}\.[0-9]\+\.[0-9]\{4,\}\+\.[0-9]\+$')
+
+if [[ "$chromium_version" != "$chromium_version_old" ]]; then
+  (cd "$root" && update-source-version vivaldi-ffmpeg-codecs "$chromium_version")
+
+  git add "${ffmpeg_nix}"
+  git commit -m "vivaldi-ffmepg-codecs: $chromium_version_old -> $chromium_version"
+fi
diff --git a/nixpkgs/pkgs/applications/networking/browsers/vivaldi/widevine.nix b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/widevine.nix
new file mode 100644
index 000000000000..6e807aac5df6
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/vivaldi/widevine.nix
@@ -0,0 +1,33 @@
+{ stdenv, fetchurl
+, unzip
+}:
+
+stdenv.mkDerivation rec {
+  name = "widevine";
+  version = "4.10.1582.1";
+
+  src = fetchurl {
+    url = "https://dl.google.com/widevine-cdm/${version}-linux-x64.zip";
+    sha256 = "0l743f2yyaq1vvc3iicajgnfpjxjsfvjcqvanndbxs23skgjcv6r";
+  };
+
+  buildInputs = [ unzip ];
+
+  unpackPhase = ''
+    unzip $src
+  '';
+
+  installPhase = ''
+    install -vD manifest.json $out/share/google/chrome/WidevineCdm/manifest.json
+    install -vD LICENSE.txt $out/share/google/chrome/WidevineCdm/LICENSE.txt
+    install -vD libwidevinecdm.so $out/share/google/chrome/WidevineCdm/_platform_specific/linux_x64/libwidevinecdm.so
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Widevine support for Vivaldi";
+    homepage = "https://www.widevine.com";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ betaboon ];
+    platforms   = [ "x86_64-linux" ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/w3m/RAND_egd.libressl.patch b/nixpkgs/pkgs/applications/networking/browsers/w3m/RAND_egd.libressl.patch
new file mode 100644
index 000000000000..49dd417d1c39
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/w3m/RAND_egd.libressl.patch
@@ -0,0 +1,11 @@
+--- a/url.c  2014-07-14 12:31:30.476563116 +0200
++++ b/url.c   2014-07-14 12:32:16.364918248 +0200
+@@ -268,7 +268,7 @@ init_PRNG()
+     if (RAND_status())
+ 	return;
+     if ((file = RAND_file_name(buffer, sizeof(buffer)))) {
+-#ifdef USE_EGD
++#if defined(USE_EGD) && defined(HAVE_SSL_RAND_EGD)
+ 	if (RAND_egd(file) > 0)
+ 	    return;
+ #endif
diff --git a/nixpkgs/pkgs/applications/networking/browsers/w3m/default.nix b/nixpkgs/pkgs/applications/networking/browsers/w3m/default.nix
new file mode 100644
index 000000000000..a15d6844f56d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/w3m/default.nix
@@ -0,0 +1,100 @@
+{ stdenv, fetchFromGitHub, fetchpatch
+, ncurses, boehmgc, gettext, zlib
+, sslSupport ? true, openssl ? null
+, graphicsSupport ? !stdenv.isDarwin, imlib2 ? null
+, x11Support ? graphicsSupport, libX11 ? null
+, mouseSupport ? !stdenv.isDarwin, gpm-ncurses ? null
+, perl, man, pkgconfig, buildPackages, w3m
+}:
+
+assert sslSupport -> openssl != null;
+assert graphicsSupport -> imlib2 != null;
+assert x11Support -> graphicsSupport && libX11 != null;
+assert mouseSupport -> gpm-ncurses != null;
+
+with stdenv.lib;
+
+let
+  mktable = buildPackages.stdenv.mkDerivation {
+    name = "w3m-mktable";
+    inherit (w3m) src;
+    nativeBuildInputs = [ pkgconfig boehmgc ];
+    makeFlags = [ "mktable" ];
+    installPhase = ''
+      install -D mktable $out/bin/mktable
+    '';
+  };
+in stdenv.mkDerivation rec {
+  pname = "w3m";
+  version = "0.5.3+git20190105";
+
+  src = fetchFromGitHub {
+    owner = "tats";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1fbg2p8qh2gvi3g4iz4q6vc0k70pf248r4yndi5lcn2m3mzvjx0i";
+  };
+
+  NIX_LDFLAGS = optionalString stdenv.isSunOS "-lsocket -lnsl";
+
+  # we must set these so that the generated files (e.g. w3mhelp.cgi) contain
+  # the correct paths.
+  PERL = "${perl}/bin/perl";
+  MAN = "${man}/bin/man";
+
+  makeFlags = [ "AR=${stdenv.cc.bintools.targetPrefix}ar" ];
+
+  patches = [
+    ./RAND_egd.libressl.patch
+    (fetchpatch {
+      name = "https.patch";
+      url = "https://aur.archlinux.org/cgit/aur.git/plain/https.patch?h=w3m-mouse&id=5b5f0fbb59f674575e87dd368fed834641c35f03";
+      sha256 = "08skvaha1hjyapsh8zw5dgfy433mw2hk7qy9yy9avn8rjqj7kjxk";
+    })
+  ] ++ optional (graphicsSupport && !x11Support) [ ./no-x11.patch ];
+
+  postPatch = optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+    ln -s ${mktable}/bin/mktable mktable
+    # stop make from recompiling mktable
+    sed -ie 's!mktable.*:.*!mktable:!' Makefile.in
+  '';
+
+  nativeBuildInputs = [ pkgconfig gettext ];
+  buildInputs = [ ncurses boehmgc zlib ]
+    ++ optional sslSupport openssl
+    ++ optional mouseSupport gpm-ncurses
+    ++ optional graphicsSupport imlib2
+    ++ optional x11Support libX11;
+
+  postInstall = optionalString graphicsSupport ''
+    ln -s $out/libexec/w3m/w3mimgdisplay $out/bin
+  '';
+
+  hardeningDisable = [ "format" ];
+
+  configureFlags =
+    [ "--with-ssl=${openssl.dev}" "--with-gc=${boehmgc.dev}" ]
+    ++ optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+      "ac_cv_func_setpgrp_void=yes"
+    ]
+    ++ optional graphicsSupport "--enable-image=${optionalString x11Support "x11,"}fb";
+
+  preConfigure = ''
+    substituteInPlace ./configure --replace "/lib /usr/lib /usr/local/lib /usr/ucblib /usr/ccslib /usr/ccs/lib /lib64 /usr/lib64" /no-such-path
+    substituteInPlace ./configure --replace /usr /no-such-path
+  '';
+
+  enableParallelBuilding = false;
+
+  # for w3mimgdisplay
+  # see: https://bbs.archlinux.org/viewtopic.php?id=196093
+  LIBS = optionalString x11Support "-lX11";
+
+  meta = {
+    homepage = "http://w3m.sourceforge.net/";
+    description = "A text-mode web browser";
+    maintainers = [ maintainers.cstrahan ];
+    platforms = stdenv.lib.platforms.unix;
+    license = stdenv.lib.licenses.mit;
+  };
+}
diff --git a/nixpkgs/pkgs/applications/networking/browsers/w3m/no-x11.patch b/nixpkgs/pkgs/applications/networking/browsers/w3m/no-x11.patch
new file mode 100644
index 000000000000..0816c022926d
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/w3m/no-x11.patch
@@ -0,0 +1,14 @@
+Forget about X11 in fb module.
+This breaks w3mimgdisplay under X11, but removes X11 dependency it in pure fb.
+diff --git a/w3mimg/fb/fb_imlib2.c b/w3mimg/fb/fb_imlib2.c
+index 1a5151c..d3d7bc3 100644
+--- a/w3mimg/fb/fb_imlib2.c
++++ b/w3mimg/fb/fb_imlib2.c
+@@ -3,6 +3,7 @@
+                 fb_imlib2.c 0.3 Copyright (C) 2002, hito
+  **************************************************************************/
+ 
++#define X_DISPLAY_MISSING
+ #include <Imlib2.h>
+ #include "fb.h"
+ #include "fb_img.h"
diff --git a/nixpkgs/pkgs/applications/networking/browsers/webmacs/default.nix b/nixpkgs/pkgs/applications/networking/browsers/webmacs/default.nix
new file mode 100644
index 000000000000..7dbb6a3c5388
--- /dev/null
+++ b/nixpkgs/pkgs/applications/networking/browsers/webmacs/default.nix
@@ -0,0 +1,75 @@
+{ lib
+, mkDerivationWith
+, fetchFromGitHub
+, python3Packages
+, herbstluftwm
+}:
+
+mkDerivationWith python3Packages.buildPythonApplication rec {
+  pname = "webmacs";
+  version = "0.8";
+
+  disabled = python3Packages.isPy27;
+
+  src = fetchFromGitHub {
+    owner = "parkouss";
+    repo = "webmacs";
+    rev = version;
+    fetchSubmodules = true;
+    sha256 = "1hzb9341hybgrqcy1w20hshm6xaiby4wbjpjkigf4zq389407368";
+  };
+
+  propagatedBuildInputs = with python3Packages; [
+    pyqtwebengine
+    setuptools
+    dateparser
+    jinja2
+    pygments
+  ];
+
+  checkInputs = [
+    python3Packages.pytest
+    #python3Packages.pytest-xvfb
+    #python3Packages.pytest-qt
+    python3Packages.pytestCheckHook
+    herbstluftwm
+
+    # The following are listed in test-requirements.txt but appear not
+    # to be needed at present:
+
+    # python3Packages.pytest-mock
+    # python3Packages.flake8
+  ];
+
+  # See https://github.com/parkouss/webmacs/blob/1a04fb7bd3f33d39cb4d71621b48c2458712ed39/setup.py#L32
+  # Don't know why they're using CC for g++.
+  preConfigure = ''
+   export CC=$CXX
+  '';
+
+  doCheck = false; # test dependencies not packaged up yet
+
+  dontWrapQtApps = true;
+
+  preFixup = ''
+    makeWrapperArgs+=("''${qtWrapperArgs[@]}")
+  '';
+
+  meta = with lib; {
+    description = "Keyboard-based web browser with Emacs/conkeror heritage";
+    longDescription = ''
+      webmacs is yet another browser for keyboard-based web navigation.
+
+      It mainly targets emacs-like navigation, and started as a clone (in terms of
+      features) of conkeror.
+
+      Based on QtWebEngine and Python 3. Fully customizable in Python.
+    '';
+    homepage = "https://webmacs.readthedocs.io/en/latest/";
+    changelog = "https://github.com/parkouss/webmacs/blob/master/CHANGELOG.md";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ jacg ];
+    platforms = platforms.all;
+  };
+
+}