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-rw-r--r--nixos/default.nix16
-rw-r--r--nixos/doc/manual/configuration/configuration.xml1
-rw-r--r--nixos/doc/manual/default.nix1
-rw-r--r--nixos/doc/manual/installation/obtaining.xml4
-rw-r--r--nixos/doc/manual/release-notes/rl-unstable.xml35
-rw-r--r--nixos/modules/misc/ids.nix3
-rw-r--r--nixos/modules/misc/nixos.nix82
-rw-r--r--nixos/modules/misc/nixos.xml84
-rw-r--r--nixos/modules/module-list.nix4
-rw-r--r--nixos/modules/profiles/base.nix4
-rw-r--r--nixos/modules/programs/bash/bash.nix4
-rw-r--r--nixos/modules/programs/ibus.nix2
-rw-r--r--nixos/modules/programs/zsh/zsh.nix20
-rw-r--r--nixos/modules/services/cluster/kubernetes.nix1
-rw-r--r--nixos/modules/services/databases/influxdb.nix239
-rw-r--r--nixos/modules/services/misc/bepasty.nix151
-rw-r--r--nixos/modules/services/misc/devmon.nix8
-rw-r--r--nixos/modules/services/monitoring/bosun.nix28
-rw-r--r--nixos/modules/services/monitoring/grafana.nix193
-rw-r--r--nixos/modules/services/monitoring/heapster.nix57
-rw-r--r--nixos/modules/services/monitoring/longview.nix118
-rw-r--r--nixos/modules/services/networking/i2pd.nix172
-rw-r--r--nixos/modules/services/networking/nix-serve.nix2
-rw-r--r--nixos/modules/services/scheduling/cron.nix2
-rw-r--r--nixos/modules/services/torrent/transmission.nix8
-rw-r--r--nixos/modules/services/web-servers/apache-httpd/wordpress.nix2
-rw-r--r--nixos/modules/services/x11/desktop-managers/kde5.nix4
-rw-r--r--nixos/modules/services/x11/desktop-managers/xfce.nix10
-rw-r--r--nixos/modules/services/x11/display-managers/gdm.nix2
-rw-r--r--nixos/modules/services/x11/display-managers/lightdm.nix2
-rw-r--r--nixos/modules/services/x11/display-managers/slim.nix5
-rw-r--r--nixos/modules/system/boot/systemd-unit-options.nix9
-rw-r--r--nixos/modules/system/boot/systemd.nix2
-rw-r--r--nixos/modules/tasks/filesystems.nix16
-rw-r--r--nixos/modules/tasks/scsi-link-power-management.nix34
-rw-r--r--nixos/modules/virtualisation/docker.nix7
-rw-r--r--nixos/release.nix2
-rw-r--r--nixos/tests/nixos-pin-version.nix57
-rw-r--r--nixos/tests/sddm.nix28
39 files changed, 1040 insertions, 379 deletions
diff --git a/nixos/default.nix b/nixos/default.nix
index 5d69b79e13a6..6359d10c8805 100644
--- a/nixos/default.nix
+++ b/nixos/default.nix
@@ -1,12 +1,20 @@
 { configuration ? import ./lib/from-env.nix "NIXOS_CONFIG" <nixos-config>
 , system ? builtins.currentSystem
+, extraModules ? []
+  # This attribute is used to specify a different nixos version, a different
+  # system or additional modules which might be set conditionally.
+, reEnter ? false
 }:
 
 let
+  reEnterModule = {
+    config.nixos.path = with (import ../lib); mkIf reEnter (mkForce null);
+    config.nixos.configuration = configuration;
+  };
 
   eval = import ./lib/eval-config.nix {
     inherit system;
-    modules = [ configuration ];
+    modules = [ configuration reEnterModule ] ++ extraModules;
   };
 
   inherit (eval) pkgs;
@@ -14,14 +22,14 @@ let
   # This is for `nixos-rebuild build-vm'.
   vmConfig = (import ./lib/eval-config.nix {
     inherit system;
-    modules = [ configuration ./modules/virtualisation/qemu-vm.nix ];
+    modules = [ configuration reEnterModule ./modules/virtualisation/qemu-vm.nix ] ++ extraModules;
   }).config;
 
   # This is for `nixos-rebuild build-vm-with-bootloader'.
   vmWithBootLoaderConfig = (import ./lib/eval-config.nix {
     inherit system;
     modules =
-      [ configuration
+      [ configuration reEnterModule
         ./modules/virtualisation/qemu-vm.nix
         { virtualisation.useBootLoader = true; }
       ];
@@ -30,7 +38,7 @@ let
 in
 
 {
-  inherit (eval) config options;
+  inherit (eval.config.nixos.reflect) config options;
 
   system = eval.config.system.build.toplevel;
 
diff --git a/nixos/doc/manual/configuration/configuration.xml b/nixos/doc/manual/configuration/configuration.xml
index 8fde0dc7e611..afffd60bc485 100644
--- a/nixos/doc/manual/configuration/configuration.xml
+++ b/nixos/doc/manual/configuration/configuration.xml
@@ -26,6 +26,7 @@ effect after you run <command>nixos-rebuild</command>.</para>
 
 <!-- FIXME: auto-include NixOS module docs -->
 <xi:include href="postgresql.xml" />
+<xi:include href="nixos.xml" />
 
 <!-- Apache; libvirtd virtualisation -->
 
diff --git a/nixos/doc/manual/default.nix b/nixos/doc/manual/default.nix
index 61a71d834050..4bfd08869b7f 100644
--- a/nixos/doc/manual/default.nix
+++ b/nixos/doc/manual/default.nix
@@ -55,6 +55,7 @@ let
       cp -prd $sources/* . # */
       chmod -R u+w .
       cp ${../../modules/services/databases/postgresql.xml} configuration/postgresql.xml
+      cp ${../../modules/misc/nixos.xml} configuration/nixos.xml
       ln -s ${optionsDocBook} options-db.xml
       echo "${version}" > version
     '';
diff --git a/nixos/doc/manual/installation/obtaining.xml b/nixos/doc/manual/installation/obtaining.xml
index afd6c9543f70..f6e8b218e2b3 100644
--- a/nixos/doc/manual/installation/obtaining.xml
+++ b/nixos/doc/manual/installation/obtaining.xml
@@ -39,8 +39,8 @@ running NixOS system through several other means:
     <para>Using NixOps, the NixOS-based cloud deployment tool, which
     allows you to provision VirtualBox and EC2 NixOS instances from
     declarative specifications.  Check out the <link
-    xlink:href="https://github.com/NixOS/nixops">NixOps
-    homepage</link> for details.</para>
+    xlink:href="https://nixos.org/nixops">NixOps homepage</link> for
+    details.</para>
   </listitem>
 </itemizedlist>
 
diff --git a/nixos/doc/manual/release-notes/rl-unstable.xml b/nixos/doc/manual/release-notes/rl-unstable.xml
index 573b99d4902f..97ac03a770f6 100644
--- a/nixos/doc/manual/release-notes/rl-unstable.xml
+++ b/nixos/doc/manual/release-notes/rl-unstable.xml
@@ -6,6 +6,26 @@
 
 <title>Unstable</title>
 
+<para>In addition to numerous new and upgraded packages, this release
+has the following highlights:</para>
+
+<itemizedlist>
+
+  <listitem>
+    <para>You can now pin a specific version of NixOS in your <filename>configuration.nix</filename>
+    by setting:
+
+<programlisting>
+nixos.path = ./nixpkgs-unstable-2015-12-06/nixos;
+</programlisting>
+
+    This will make NixOS re-evaluate your configuration with the modules of
+    the specified NixOS version at the given path.  For more details, see
+    <xref linkend="module-misc-nixos" /></para>
+  </listitem>
+
+</itemizedlist>
+
 <para>When upgrading from a previous release, please be aware of the
 following incompatible changes:</para>
 
@@ -54,6 +74,21 @@ nginx.override {
     </para>
   </listitem>
 
+  <listitem>
+    <para><command>s3sync</command> is removed, as it hasn't been
+    developed by upstream for 4 years and only runs with ruby 1.8.
+    For an actively-developer alternative look at
+    <command>tarsnap</command> and others.
+    </para>
+  </listitem>
+
+  <listitem>
+    <para><command>ruby_1_8</command> has been removed as it's not
+    supported from upstream anymore and probably contains security
+    issues.
+    </para>
+  </listitem>
+
 </itemizedlist>
 
 </section>
diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index de9a318fdd24..c9810b6fccb1 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -235,6 +235,8 @@
       kibana = 211;
       xtreemfs = 212;
       calibre-server = 213;
+      heapster = 214;
+      bepasty = 215;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -448,6 +450,7 @@
       #kibana = 211;
       xtreemfs = 212;
       calibre-server = 213;
+      bepasty = 215;
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal
diff --git a/nixos/modules/misc/nixos.nix b/nixos/modules/misc/nixos.nix
new file mode 100644
index 000000000000..356129211d06
--- /dev/null
+++ b/nixos/modules/misc/nixos.nix
@@ -0,0 +1,82 @@
+{ config, options, lib, ... }:
+
+# This modules is used to inject a different NixOS version as well as its
+# argument such that one can pin a specific version with the versionning
+# system of the configuration.
+let
+  nixosReentry = import config.nixos.path {
+    inherit (config.nixos) configuration extraModules;
+    inherit (config.nixpkgs) system;
+    reEnter = true;
+  };
+in
+
+with lib;
+
+{
+  options = {
+    nixos.path = mkOption {
+      default = null;
+      example = literalExample "./nixpkgs-15.09/nixos";
+      type = types.nullOr types.path;
+      description = ''
+        This option give the ability to evaluate the current set of modules
+        with a different version of NixOS. This option can be used version
+        the version of NixOS with the configuration without relying on the
+        <literal>NIX_PATH</literal> environment variable.
+      '';
+    };
+
+    nixos.system = mkOption {
+      example = "i686-linux";
+      type = types.uniq types.str;
+      description = ''
+        Name of the system used to compile NixOS.
+      '';
+    };
+
+    nixos.extraModules = mkOption {
+      default = [];
+      example = literalExample "mkIf config.services.openssh.enable [ ./sshd-config.nix ]";
+      type = types.listOf types.unspecified;
+      description = ''
+        Define additional modules which would be loaded to evaluate the
+        configuration.
+      '';
+    };
+
+    nixos.configuration = mkOption {
+      type = types.unspecified;
+      internal = true;
+      description = ''
+        Option used by <filename>nixos/default.nix</filename> to re-inject
+        the same configuration module as the one used for the current
+        execution.
+      '';
+    };
+
+    nixos.reflect = mkOption {
+      default = { inherit config options; };
+      type = types.unspecified;
+      internal = true;
+      description = ''
+        Provides <literal>config</literal> and <literal>options</literal>
+        computed by the module system and given as argument to all
+        modules. These are used for introspection of options and
+        configuration by tools such as <literal>nixos-option</literal>.
+      '';
+    };
+  };
+
+  config = mkMerge [
+    (mkIf (config.nixos.path != null) (mkForce {
+      system.build.toplevel = nixosReentry.system;
+      system.build.vm = nixosReentry.vm;
+      nixos.reflect = { inherit (nixosReentry) config options; };
+    }))
+
+    { meta.maintainers = singleton lib.maintainers.pierron;
+      meta.doc = ./nixos.xml;
+    }
+  ];
+}
diff --git a/nixos/modules/misc/nixos.xml b/nixos/modules/misc/nixos.xml
new file mode 100644
index 000000000000..f8d3b4bc6e33
--- /dev/null
+++ b/nixos/modules/misc/nixos.xml
@@ -0,0 +1,84 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="module-misc-nixos">
+
+<title>NixOS Reentry</title>
+
+<!-- FIXME: render nicely -->
+
+<!-- FIXME: source can be added automatically -->
+<para><emphasis>Source:</emphasis> <filename>modules/misc/nixos.nix</filename></para>
+
+<!-- FIXME: more stuff, like maintainer? -->
+
+<para>NixOS reentry can be used for both pinning the evaluation to a
+specific version of NixOS, and to dynamically add additional modules into
+the Module evaluation.</para>
+
+<section><title>NixOS Version Pinning</title>
+
+<para>To pin a specific version of NixOS, you need a version that you can
+either clone localy, or that you can fetch remotely.</para>
+
+<para>If you already have a cloned version of NixOS in the directory
+<filename>/etc/nixos/nixpkgs-16-03</filename>, then you can specify the
+<option>nixos.path</option> with either the path or the relative path of
+your NixOS clone. For example, you can add the following to your
+<filename>/etc/nixos/configuration.nix</filename> file:
+
+<programlisting>
+nixos.path = ./nixpkgs-16-03/nixos;
+</programlisting>
+</para>
+
+<para>Another option is to fetch a specific version of NixOS, with either
+the <literal>fetchTarball</literal> builtin, or the
+<literal>pkgs.fetchFromGithub</literal> function and use the result as an
+input.
+
+<programlisting>
+nixos.path = "${builtins.fetchTarball https://github.com/NixOS/nixpkgs/archive/1f27976e03c15183191d1b4aa1a40d1f14666cd2.tar.gz}/nixos";
+</programlisting>
+</para>
+
+</section>
+
+
+<section><title>Adding Module Dynamically</title>
+
+<para>To add additional module, the recommended way is to use statically
+known modules in the list of imported arguments as described in <xref
+linkend="sec-modularity" />.  Unfortunately, this recommended method has
+limitation, such that the list of imported files cannot be selected based on
+the content of the configuration.
+
+Fortunately, NixOS reentry system can be used as an alternative to register
+new imported modules based on the content of the configuration. To do so,
+one should define both <option>nixos.path</option> and
+<option>nixos.extraModules</option> options.
+
+<programlisting>
+nixos.path = &lt;nixos&gt;;
+nixos.extraModules =
+  if config.networking.hostName == "server" then
+    [ ./server.nix ] else [ ./client.nix ];
+</programlisting>
+
+Also note, that the above can be reimplemented in a different way which is
+not as expensive, by using <literal>mkIf</literal> at the top each
+configuration if both modules are present on the file system (see <xref
+linkend="sec-option-definitions" />) and by always inmporting both
+modules.</para>
+
+</section>
+
+<section><title>Options</title>
+
+<para>FIXME: auto-generated list of module options.</para>
+
+</section>
+
+
+</chapter>
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 034ea933a7db..a8cf38f1c8fe 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -52,6 +52,7 @@
   ./misc/lib.nix
   ./misc/locate.nix
   ./misc/meta.nix
+  ./misc/nixos.nix
   ./misc/nixpkgs.nix
   ./misc/passthru.nix
   ./misc/version.nix
@@ -189,6 +190,7 @@
   ./services/mail/spamassassin.nix
   ./services/misc/apache-kafka.nix
   ./services/misc/autofs.nix
+  ./services/misc/bepasty.nix
   ./services/misc/canto-daemon.nix
   ./services/misc/calibre-server.nix
   ./services/misc/cpuminer-cryptonight.nix
@@ -238,6 +240,8 @@
   ./services/monitoring/dd-agent.nix
   ./services/monitoring/grafana.nix
   ./services/monitoring/graphite.nix
+  ./services/monitoring/heapster.nix
+  ./services/monitoring/longview.nix
   ./services/monitoring/monit.nix
   ./services/monitoring/munin.nix
   ./services/monitoring/nagios.nix
diff --git a/nixos/modules/profiles/base.nix b/nixos/modules/profiles/base.nix
index 79324f83646b..20a1f7f1ed8c 100644
--- a/nixos/modules/profiles/base.nix
+++ b/nixos/modules/profiles/base.nix
@@ -1,7 +1,7 @@
 # This module defines the software packages included in the "minimal"
 # installation CD.  It might be useful elsewhere.
 
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
   # Include some utilities that are useful for installing or repairing
@@ -50,5 +50,5 @@
   boot.supportedFilesystems = [ "btrfs" "reiserfs" "vfat" "f2fs" "xfs" "zfs" "ntfs" "cifs" ];
 
   # Configure host id for ZFS to work
-  networking.hostId = "8425e349";
+  networking.hostId = lib.mkDefault "8425e349";
 }
diff --git a/nixos/modules/programs/bash/bash.nix b/nixos/modules/programs/bash/bash.nix
index 75efd5e29039..1c3c07a1c210 100644
--- a/nixos/modules/programs/bash/bash.nix
+++ b/nixos/modules/programs/bash/bash.nix
@@ -90,8 +90,8 @@ in
 
       promptInit = mkOption {
         default = ''
-          if test "$TERM" != "dumb"; then
-            # Provide a nice prompt.
+          # Provide a nice prompt if the terminal supports it.
+          if [ "$TERM" != "dumb" -o -n "$INSIDE_EMACS" ]; then
             PROMPT_COLOR="1;31m"
             let $UID && PROMPT_COLOR="1;32m"
             PS1="\n\[\033[$PROMPT_COLOR\][\u@\h:\w]\\$\[\033[0m\] "
diff --git a/nixos/modules/programs/ibus.nix b/nixos/modules/programs/ibus.nix
index b8702a743d8a..a42753a292b2 100644
--- a/nixos/modules/programs/ibus.nix
+++ b/nixos/modules/programs/ibus.nix
@@ -27,7 +27,7 @@ in
   };
 
   config = mkIf cfg.enable {
-    environment.systemPackages = [ pkgs.ibus ];
+    environment.systemPackages = [ pkgs.ibus pkgs.gnome3.dconf ];
 
     gtkPlugins = [ pkgs.ibus ];
     qtPlugins = [ pkgs.ibus-qt ];
diff --git a/nixos/modules/programs/zsh/zsh.nix b/nixos/modules/programs/zsh/zsh.nix
index 74dd6af0bdde..9f7596a21e72 100644
--- a/nixos/modules/programs/zsh/zsh.nix
+++ b/nixos/modules/programs/zsh/zsh.nix
@@ -25,7 +25,7 @@ in
       enable = mkOption {
         default = false;
         description = ''
-          Whenever to configure Zsh as an interactive shell.
+          Whether to configure zsh as an interactive shell.
         '';
         type = types.bool;
       };
@@ -73,6 +73,14 @@ in
         type = types.lines;
       };
 
+      enableCompletion = mkOption {
+        default = true;
+        description = ''
+          Enable zsh completion for all interactive zsh shells.
+        '';
+        type = types.bool;
+      };
+
     };
 
   };
@@ -101,6 +109,13 @@ in
         export HISTFILE=$HOME/.zsh_history
 
         setopt HIST_IGNORE_DUPS SHARE_HISTORY HIST_FCNTL_LOCK
+
+        # Tell zsh how to find installed completions
+        for p in ''${(z)NIX_PROFILES}; do
+          fpath+=($p/share/zsh/site-functions $p/share/zsh/$ZSH_VERSION/functions)
+        done
+
+        ${if cfg.enableCompletion then "autoload -U compinit && compinit" else ""}
       '';
 
     };
@@ -161,7 +176,8 @@ in
 
     environment.etc."zinputrc".source = ./zinputrc;
 
-    environment.systemPackages = [ pkgs.zsh ];
+    environment.systemPackages = [ pkgs.zsh ]
+      ++ optional cfg.enableCompletion pkgs.nix-zsh-completions;
 
     #users.defaultUserShell = mkDefault "/run/current-system/sw/bin/zsh";
 
diff --git a/nixos/modules/services/cluster/kubernetes.nix b/nixos/modules/services/cluster/kubernetes.nix
index a06384e27139..42efde36678f 100644
--- a/nixos/modules/services/cluster/kubernetes.nix
+++ b/nixos/modules/services/cluster/kubernetes.nix
@@ -512,6 +512,7 @@ in {
         wantedBy = [ "multi-user.target" ];
         requires = ["kubernetes-setup.service"];
         after = [ "network-interfaces.target" "etcd.service" "docker.service" ];
+        path = [ pkgs.gitMinimal pkgs.openssh ];
         script = ''
           export PATH="/bin:/sbin:/usr/bin:/usr/sbin:$PATH"
           exec ${cfg.package}/bin/kubelet \
diff --git a/nixos/modules/services/databases/influxdb.nix b/nixos/modules/services/databases/influxdb.nix
index 4be0428caa33..8d63f14c67b5 100644
--- a/nixos/modules/services/databases/influxdb.nix
+++ b/nixos/modules/services/databases/influxdb.nix
@@ -5,43 +5,103 @@ with lib;
 let
   cfg = config.services.influxdb;
 
-  influxdbConfig = pkgs.writeText "config.toml" ''
-    bind-address = "${cfg.bindAddress}"
+  configOptions = recursiveUpdate {
+    meta = {
+      bind-address = ":8088";
+      commit-timeout = "50ms";
+      dir = "${cfg.dataDir}/meta";
+      election-timeout = "1s";
+      heartbeat-timeout = "1s";
+      hostname = "localhost";
+      leader-lease-timeout = "500ms";
+      retention-autocreate = true;
+    };
+
+    data = {
+      dir = "${cfg.dataDir}/data";
+      wal-dir = "${cfg.dataDir}/wal";
+      max-wal-size = 104857600;
+      wal-enable-logging = true;
+      wal-flush-interval = "10m";
+      wal-partition-flush-delay = "2s";
+    };
+
+    cluster = {
+      shard-writer-timeout = "5s";
+      write-timeout = "5s";
+    };
 
-    [logging]
-    level  = "info"
-    file   = "stdout"
+    retention = {
+      enabled = true;
+      check-interval = "30m";
+    };
 
-    [admin]
-    port   = ${toString cfg.adminPort}
-    assets = "${pkgs.influxdb}/share/influxdb/admin"
+    http = {
+      enabled = true;
+      auth-enabled = false;
+      bind-address = ":8086";
+      https-enabled = false;
+      log-enabled = true;
+      pprof-enabled = false;
+      write-tracing = false;
+    };
 
-    [api]
-    port   = ${toString cfg.apiPort}
-    ${cfg.apiExtraConfig}
+    monitor = {
+      store-enabled = false;
+      store-database = "_internal";
+      store-interval = "10s";
+    };
 
-    [input_plugins]
-      ${cfg.inputPluginsConfig}
+    admin = {
+      enabled = true;
+      bind-address = ":8083";
+      https-enabled = false;
+    };
 
-    [raft]
-    dir = "${cfg.dataDir}/raft"
-    ${cfg.raftConfig}
+    graphite = [{
+      enabled = false;
+    }];
 
-    [storage]
-    dir = "${cfg.dataDir}/db"
-    ${cfg.storageConfig}
+    udp = [{
+      enabled = false;
+    }];
 
-    [cluster]
-    ${cfg.clusterConfig}
+    collectd = {
+      enabled = false;
+      typesdb = "${pkgs.collectd}/share/collectd/types.db";
+      database = "collectd_db";
+      port = 25826;
+    };
 
-    [sharding]
-      ${cfg.shardingConfig}
+    opentsdb = {
+      enabled = false;
+    };
 
-    [wal]
-    dir = "${cfg.dataDir}/wal"
-    ${cfg.walConfig}
+    continuous_queries = {
+      enabled = true;
+      log-enabled = true;
+      recompute-previous-n = 2;
+      recompute-no-older-than = "10m";
+      compute-runs-per-interval = 10;
+      compute-no-more-than = "2m";
+    };
 
-    ${cfg.extraConfig}
+    hinted-handoff = {
+      enabled = true;
+      dir = "${cfg.dataDir}/hh";
+      max-size = 1073741824;
+      max-age = "168h";
+      retry-rate-limit = 0;
+      retry-interval = "1s";
+    };
+  } cfg.extraConfig;
+
+  configFile = pkgs.runCommand "config.toml" {
+    buildInputs = [ pkgs.remarshal ];
+  } ''
+    remarshal -if json -of toml \
+      < ${pkgs.writeText "config.json" (builtins.toJSON configOptions)} \
+      > $out
   '';
 in
 {
@@ -82,124 +142,10 @@ in
         type = types.path;
       };
 
-      bindAddress = mkOption {
-        default = "127.0.0.1";
-        description = "Address where influxdb listens";
-        type = types.str;
-      };
-
-      adminPort = mkOption {
-        default = 8083;
-        description = "The port where influxdb admin listens";
-        type = types.int;
-      };
-
-      apiPort = mkOption {
-        default = 8086;
-        description = "The port where influxdb api listens";
-        type = types.int;
-      };
-
-      apiExtraConfig = mkOption {
-        default = ''
-          read-timeout = "5s"
-        '';
-        description = "Extra influxdb api configuration";
-        example = ''
-          ssl-port = 8084
-          ssl-cert = /path/to/cert.pem
-          read-timeout = "5s"
-        '';
-        type = types.lines;
-      };
-
-      inputPluginsConfig = mkOption {
-        default = "";
-        description = "Configuration of influxdb extra plugins";
-        example = ''
-          [input_plugins.graphite]
-          enabled = true
-          port = 2003
-          database = "graphite"
-        '';
-      };
-
-      raftConfig = mkOption {
-        default = ''
-          port = 8090
-        '';
-        description = "Influxdb raft configuration";
-        type = types.lines;
-      };
-
-      storageConfig = mkOption {
-        default = ''
-          write-buffer-size = 10000
-        '';
-        description = "Influxdb raft configuration";
-        type = types.lines;
-      };
-
-      clusterConfig = mkOption {
-        default = ''
-          protobuf_port = 8099
-          protobuf_timeout = "2s"
-          protobuf_heartbeat = "200ms"
-          protobuf_min_backoff = "1s"
-          protobuf_max_backoff = "10s"
-
-          write-buffer-size = 10000
-          max-response-buffer-size = 100
-
-          concurrent-shard-query-limit = 10
-        '';
-        description = "Influxdb cluster configuration";
-        type = types.lines;
-      };
-
-      leveldbConfig = mkOption {
-        default = ''
-          max-open-files = 40
-          lru-cache-size = "200m"
-          max-open-shards = 0
-          point-batch-size = 100
-          write-batch-size = 5000000
-        '';
-        description = "Influxdb leveldb configuration";
-        type = types.lines;
-      };
-
-      shardingConfig = mkOption {
-        default = ''
-          replication-factor = 1
-
-          [sharding.short-term]
-          duration = "7d"
-          split = 1
-
-          [sharding.long-term]
-          duration = "30d"
-          split = 1
-        '';
-        description = "Influxdb sharding configuration";
-        type = types.lines;
-      };
-
-      walConfig = mkOption {
-        default = ''
-          flush-after = 1000
-          bookmark-after = 1000
-          index-after = 1000
-          requests-per-logfile = 10000
-        '';
-        description = "Influxdb write-ahead log configuration";
-        type = types.lines;
-      };
-
       extraConfig = mkOption {
-        default = "";
+        default = {};
         description = "Extra configuration options for influxdb";
-        type = types.string;
+        type = types.attrs;
       };
     };
 
@@ -215,7 +161,7 @@ in
       wantedBy = [ "multi-user.target" ];
       after = [ "network-interfaces.target" ];
       serviceConfig = {
-        ExecStart = ''${cfg.package}/bin/influxdb -config "${influxdbConfig}"'';
+        ExecStart = ''${cfg.package}/bin/influxd -config "${configFile}"'';
         User = "${cfg.user}";
         Group = "${cfg.group}";
         PermissionsStartOnly = true;
@@ -224,11 +170,6 @@ in
         mkdir -m 0770 -p ${cfg.dataDir}
         if [ "$(id -u)" = 0 ]; then chown -R ${cfg.user}:${cfg.group} ${cfg.dataDir}; fi
       '';
-      postStart = mkBefore ''
-        until ${pkgs.curl.bin}/bin/curl -s -o /dev/null 'http://${cfg.bindAddress}:${toString cfg.apiPort}/'; do
-          sleep 1;
-        done
-      '';
     };
 
     users.extraUsers = optional (cfg.user == "influxdb") {
diff --git a/nixos/modules/services/misc/bepasty.nix b/nixos/modules/services/misc/bepasty.nix
new file mode 100644
index 000000000000..12671cb1b6cd
--- /dev/null
+++ b/nixos/modules/services/misc/bepasty.nix
@@ -0,0 +1,151 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  gunicorn = pkgs.pythonPackages.gunicorn;
+  bepasty = pkgs.pythonPackages.bepasty-server;
+  gevent = pkgs.pythonPackages.gevent;
+  python = pkgs.pythonPackages.python;
+  cfg = config.services.bepasty;
+  user = "bepasty";
+  group = "bepasty";
+  default_home = "/var/lib/bepasty";
+in
+{
+  options.services.bepasty = {
+    enable = mkEnableOption "Bepasty servers";
+
+    servers = mkOption {
+      default = {};
+      description = ''
+        configure a number of bepasty servers which will be started with
+        gunicorn.
+        '';
+      type = with types ; attrsOf (submodule ({
+
+        options = {
+
+          bind = mkOption {
+            type = types.str;
+            description = ''
+              Bind address to be used for this server.
+              '';
+            example = "0.0.0.0:8000";
+            default = "127.0.0.1:8000";
+          };
+
+
+          dataDir = mkOption {
+            type = types.str;
+            description = ''
+              Path to the directory where the pastes will be saved to
+              '';
+            default = default_home+"/data";
+          };
+
+          defaultPermissions = mkOption {
+            type = types.str;
+            description = ''
+              default permissions for all unauthenticated accesses.
+              '';
+            example = "read,create,delete";
+            default = "read";
+          };
+
+          extraConfig = mkOption {
+            type = types.str;
+            description = ''
+              Extra configuration for bepasty server to be appended on the
+              configuration.
+              see https://bepasty-server.readthedocs.org/en/latest/quickstart.html#configuring-bepasty
+              for all options.
+              '';
+            default = "";
+            example = ''
+              PERMISSIONS = {
+                'myadminsecret': 'admin,list,create,read,delete',
+              }
+              MAX_ALLOWED_FILE_SIZE = 5 * 1000 * 1000
+              '';
+          };
+
+          secretKey = mkOption {
+            type = types.str;
+            description = ''
+              server secret for safe session cookies, must be set.
+              '';
+            default = "";
+          };
+
+          workDir = mkOption {
+            type = types.str;
+            description = ''
+              Path to the working directory (used for config and pidfile).
+              Defaults to the users home directory.
+              '';
+            default = default_home;
+          };
+
+        };
+      }));
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ bepasty ];
+
+    # creates gunicorn systemd service for each configured server
+    systemd.services = mapAttrs' (name: server:
+      nameValuePair ("bepasty-server-${name}-gunicorn")
+        ({
+          description = "Bepasty Server ${name}";
+          wantedBy = [ "multi-user.target" ];
+          after = [ "network.target" ];
+          restartIfChanged = true;
+
+          environment = {
+            BEPASTY_CONFIG = "${server.workDir}/bepasty-${name}.conf";
+            PYTHONPATH= "${bepasty}/lib/${python.libPrefix}/site-packages:${gevent}/lib/${python.libPrefix}/site-packages";
+          };
+
+          serviceConfig = {
+            Type = "simple";
+            PrivateTmp = true;
+            ExecStartPre = assert server.secretKey != ""; pkgs.writeScript "bepasty-server.${name}-init" ''
+              #!/bin/sh
+              mkdir -p "${server.workDir}"
+              mkdir -p "${server.dataDir}"
+              chown ${user}:${group} "${server.workDir}" "${server.dataDir}"
+              cat > ${server.workDir}/bepasty-${name}.conf <<EOF
+              SITENAME="${name}"
+              STORAGE_FILESYSTEM_DIRECTORY="${server.dataDir}"
+              SECRET_KEY="${server.secretKey}"
+              DEFAULT_PERMISSIONS="${server.defaultPermissions}"
+              ${server.extraConfig}
+              EOF
+            '';
+            ExecStart = ''${gunicorn}/bin/gunicorn bepasty.wsgi --name ${name} \
+              -u ${user} \
+              -g ${group} \
+              --workers 3 --log-level=info \
+              --bind=${server.bind} \
+              --pid ${server.workDir}/gunicorn-${name}.pid \
+              -k gevent
+            '';
+          };
+        })
+    ) cfg.servers;
+
+    users.extraUsers = [{
+      uid = config.ids.uids.bepasty;
+      name = user;
+      group = group;
+      home = default_home;
+    }];
+
+    users.extraGroups = [{
+      name = group;
+      gid = config.ids.gids.bepasty;
+    }];
+  };
+}
diff --git a/nixos/modules/services/misc/devmon.nix b/nixos/modules/services/misc/devmon.nix
index 7a1f7c2e079e..9dc8fee2964b 100644
--- a/nixos/modules/services/misc/devmon.nix
+++ b/nixos/modules/services/misc/devmon.nix
@@ -18,11 +18,13 @@ in {
   };
 
   config = mkIf cfg.enable {
-    systemd.services.devmon = {
+    systemd.user.services.devmon = {
       description = "devmon automatic device mounting daemon";
-      wantedBy = [ "multi-user.target" ];
-      path = [ pkgs.udevil ];
+      wantedBy = [ "default.target" ];
+      path = [ pkgs.udevil pkgs.procps pkgs.udisks2 pkgs.which ];
       serviceConfig.ExecStart = "${pkgs.udevil}/bin/devmon";
     };
+
+    services.udisks2.enable = true;
   };
 }
diff --git a/nixos/modules/services/monitoring/bosun.nix b/nixos/modules/services/monitoring/bosun.nix
index ebe4741f01bd..214a19d9483f 100644
--- a/nixos/modules/services/monitoring/bosun.nix
+++ b/nixos/modules/services/monitoring/bosun.nix
@@ -6,9 +6,11 @@ let
   cfg = config.services.bosun;
 
   configFile = pkgs.writeText "bosun.conf" ''
-    tsdbHost = ${cfg.opentsdbHost}
+    ${optionalString (cfg.opentsdbHost !=null) "tsdbHost = ${cfg.opentsdbHost}"}
+    ${optionalString (cfg.influxHost !=null) "influxHost = ${cfg.influxHost}"}
     httpListen = ${cfg.listenAddress}
     stateFile = ${cfg.stateFile}
+    ledisDir = ${cfg.ledisDir}
     checkFrequency = ${cfg.checkFrequency}
 
     ${cfg.extraConfig}
@@ -54,10 +56,20 @@ in {
       };
 
       opentsdbHost = mkOption {
-        type = types.string;
+        type = types.nullOr types.string;
         default = "localhost:4242";
         description = ''
           Host and port of the OpenTSDB database that stores bosun data.
+          To disable opentsdb you can pass null as parameter.
+        '';
+      };
+
+      influxHost = mkOption {
+        type = types.nullOr types.string;
+        default = null;
+        example = "localhost:8086";
+        description = ''
+           Host and port of the influxdb database.
         '';
       };
 
@@ -70,13 +82,21 @@ in {
       };
 
       stateFile = mkOption {
-        type = types.string;
+        type = types.path;
         default = "/var/lib/bosun/bosun.state";
         description = ''
           Path to bosun's state file.
         '';
       };
 
+      ledisDir = mkOption {
+        type = types.path;
+        default = "/var/lib/bosun/ledis_data";
+        description = ''
+          Path to bosun's ledis data dir
+        '';
+      };
+
       checkFrequency = mkOption {
         type = types.str;
         default = "5m";
@@ -103,7 +123,7 @@ in {
   };
 
   config = mkIf cfg.enable {
-  
+
     systemd.services.bosun = {
       description = "bosun metrics collector (part of Bosun)";
       wantedBy = [ "multi-user.target" ];
diff --git a/nixos/modules/services/monitoring/grafana.nix b/nixos/modules/services/monitoring/grafana.nix
index 5302728eae91..6053990e8d3b 100644
--- a/nixos/modules/services/monitoring/grafana.nix
+++ b/nixos/modules/services/monitoring/grafana.nix
@@ -7,150 +7,37 @@ let
 
   b2s = val: if val then "true" else "false";
 
-  cfgFile = pkgs.writeText "grafana.ini" ''
-    app_name = grafana
-    app_mode = production
-
-    [server]
-    ; protocol (http or https)
-    protocol = ${cfg.protocol}
-    ; the ip address to bind to, empty will bind to all interfaces
-    http_addr = ${cfg.addr}
-    ; the http port  to use
-    http_port = ${toString cfg.port}
-    ; The public facing domain name used to access grafana from a browser
-    domain = ${cfg.domain}
-    ; the full public facing url
-    root_url = ${cfg.rootUrl}
-    router_logging = false
-    ; the path relative to the binary where the static (html/js/css) files are placed
-    static_root_path = ${cfg.staticRootPath}
-    ; enable gzip
-    enable_gzip = false
-    ; https certs & key file
-    cert_file = ${cfg.certFile}
-    cert_key = ${cfg.certKey}
-
-    [analytics]
-    # Server reporting, sends usage counters to stats.grafana.org every 24 hours.
-    # No ip addresses are being tracked, only simple counters to track
-    # running instances, dashboard and error counts. It is very helpful to us.
-    # Change this option to false to disable reporting.
-    reporting_enabled = true
-    ; Google Analytics universal tracking code, only enabled if you specify an id here
-    google_analytics_ua_id =
-
-    [database]
-    ; Either "mysql", "postgres" or "sqlite3", it's your choice
-    type = ${cfg.database.type}
-    host = ${cfg.database.host}
-    name = ${cfg.database.name}
-    user = ${cfg.database.user}
-    password = ${cfg.database.password}
-    ; For "postgres" only, either "disable", "require" or "verify-full"
-    ssl_mode = disable
-    ; For "sqlite3" only
-    path = ${cfg.database.path}
-
-    [session]
-    ; Either "memory", "file", "redis", "mysql", default is "memory"
-    provider = file
-    ; Provider config options
-    ; memory: not have any config yet
-    ; file: session file path, e.g. `data/sessions`
-    ; redis: config like redis server addr, poolSize, password, e.g. `127.0.0.1:6379,100,grafana`
-    ; mysql: go-sql-driver/mysql dsn config string, e.g. `user:password@tcp(127.0.0.1)/database_name`
-    provider_config = data/sessions
-    ; Session cookie name
-    cookie_name = grafana_sess
-    ; If you use session in https only, default is false
-    cookie_secure = false
-    ; Session life time, default is 86400
-    session_life_time = 86400
-    ; session id hash func, Either "sha1", "sha256" or "md5" default is sha1
-    session_id_hashfunc = sha1
-    ; Session hash key, default is use random string
-    session_id_hashkey =
-
-    [security]
-    ; default admin user, created on startup
-    admin_user = ${cfg.security.adminUser}
-    ; default admin password, can be changed before first start of grafana,  or in profile settings
-    admin_password = ${cfg.security.adminPassword}
-    ; used for signing
-    secret_key = ${cfg.security.secretKey}
-    ; Auto-login remember days
-    login_remember_days = 7
-    cookie_username = grafana_user
-    cookie_remember_name = grafana_remember
-
-    [users]
-    ; disable user signup / registration
-    allow_sign_up = ${b2s cfg.users.allowSignUp}
-    ; Allow non admin users to create organizations
-    allow_org_create = ${b2s cfg.users.allowOrgCreate}
-    # Set to true to automatically assign new users to the default organization (id 1)
-    auto_assign_org = ${b2s cfg.users.autoAssignOrg}
-    ; Default role new users will be automatically assigned (if disabled above is set to true)
-    auto_assign_org_role = ${cfg.users.autoAssignOrgRole}
-
-    [auth.anonymous]
-    ; enable anonymous access
-    enabled = ${b2s cfg.auth.anonymous.enable}
-    ; specify organization name that should be used for unauthenticated users
-    org_name = Main Org.
-    ; specify role for unauthenticated users
-    org_role = Viewer
-
-    [auth.github]
-    enabled = false
-    client_id = some_id
-    client_secret = some_secret
-    scopes = user:email
-    auth_url = https://github.com/login/oauth/authorize
-    token_url = https://github.com/login/oauth/access_token
-
-    [auth.google]
-    enabled = false
-    client_id = some_client_id
-    client_secret = some_client_secret
-    scopes = https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email
-    auth_url = https://accounts.google.com/o/oauth2/auth
-    token_url = https://accounts.google.com/o/oauth2/token
-
-    [log]
-    root_path = data/log
-    ; Either "console", "file", default is "console"
-    ; Use comma to separate multiple modes, e.g. "console, file"
-    mode = console
-    ; Buffer length of channel, keep it as it is if you don't know what it is.
-    buffer_len = 10000
-    ; Either "Trace", "Debug", "Info", "Warn", "Error", "Critical", default is "Trace"
-    level = Info
-
-    ; For "console" mode only
-    [log.console]
-    level =
-
-    ; For "file" mode only
-    [log.file]
-    level =
-    ; This enables automated log rotate(switch of following options), default is true
-    log_rotate = true
-    ; Max line number of single file, default is 1000000
-    max_lines = 1000000
-    ; Max size shift of single file, default is 28 means 1 << 28, 256MB
-    max_lines_shift = 28
-    ; Segment log daily, default is true
-    daily_rotate = true
-    ; Expired days of log file(delete after max days), default is 7
-    max_days = 7
-
-    [event_publisher]
-    enabled = false
-    rabbitmq_url = amqp://localhost/
-    exchange = grafana_events
-  '';
+  envOptions = {
+    PATHS_DATA = cfg.dataDir;
+    PATHS_LOGS = "${cfg.dataDir}/log";
+
+    SERVER_PROTOCOL = cfg.protocol;
+    SERVER_HTTP_ADDR = cfg.addr;
+    SERVER_HTTP_PORT = cfg.port;
+    SERVER_DOMAIN = cfg.domain;
+    SERVER_ROOT_URL = cfg.rootUrl;
+    SERVER_STATIC_ROOT_PATH = cfg.staticRootPath;
+    SERVER_CERT_FILE = cfg.certFile;
+    SERVER_CERT_KEY = cfg.certKey;
+
+    DATABASE_TYPE = cfg.database.type;
+    DATABASE_HOST = cfg.database.host;
+    DATABASE_NAME = cfg.database.name;
+    DATABASE_USER = cfg.database.user;
+    DATABASE_PASSWORD = cfg.database.password;
+    DATABASE_PATH = cfg.database.path;
+
+    SECURITY_ADMIN_USER = cfg.security.adminUser;
+    SECURITY_ADMIN_PASSWORD = cfg.security.adminPassword;
+    SECURITY_SECRET_KEY = cfg.security.secretKey;
+
+    USERS_ALLOW_SIGN_UP = b2s cfg.users.allowSignUp;
+    USERS_ALLOW_ORG_CREATE = b2s cfg.users.allowOrgCreate;
+    USERS_AUTO_ASSIGN_ORG = b2s cfg.users.autoAssignOrg;
+    USERS_AUTO_ASSIGN_ORG_ROLE = cfg.users.autoAssignOrgRole;
+
+    AUTH_ANONYMOUS_ENABLE = b2s cfg.auth.anonymous.enable;
+  } // cfg.extraOptions;
 
 in {
   options.services.grafana = {
@@ -306,6 +193,16 @@ in {
         type = types.bool;
       };
     };
+
+    extraOptions = mkOption {
+      description = ''
+        Extra configuration options passed as env variables as specified in
+        <link xlink:href="http://docs.grafana.org/installation/configuration/">documentation</link>,
+        but without GF_ prefix
+      '';
+      default = {};
+      type = types.attrsOf types.str;
+    };
   };
 
   config = mkIf cfg.enable {
@@ -317,11 +214,15 @@ in {
       description = "Grafana Service Daemon";
       wantedBy = ["multi-user.target"];
       after = ["networking.target"];
+      environment = mapAttrs' (n: v: nameValuePair "GF_${n}" (toString v)) envOptions;
       serviceConfig = {
-        ExecStart = "${cfg.package}/bin/grafana --config ${cfgFile} web";
+        ExecStart = "${cfg.package}/bin/grafana -homepath ${cfg.dataDir}";
         WorkingDirectory = cfg.dataDir;
         User = "grafana";
       };
+      preStart = ''
+        ln -fs ${cfg.package}/share/grafana/conf ${cfg.dataDir}
+      '';
     };
 
     users.extraUsers.grafana = {
@@ -331,7 +232,7 @@ in {
       createHome = true;
     };
 
-    services.grafana.staticRootPath = mkDefault "${cfg.package.out}/share/go/src/github.com/grafana/grafana/public";
+    services.grafana.staticRootPath = mkDefault "${cfg.package}/share/grafana/public";
 
   };
 }
diff --git a/nixos/modules/services/monitoring/heapster.nix b/nixos/modules/services/monitoring/heapster.nix
new file mode 100644
index 000000000000..74b8c9ccd3ed
--- /dev/null
+++ b/nixos/modules/services/monitoring/heapster.nix
@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.heapster;
+in {
+  options.services.heapster = {
+    enable = mkOption {
+      description = "Whether to enable heapster monitoring";
+      default = false;
+      type = types.bool;
+    };
+
+    source = mkOption {
+      description = "Heapster metric source";
+      example = "kubernetes:https://kubernetes.default";
+      type = types.string;
+    };
+
+    sink = mkOption {
+      description = "Heapster metic sink";
+      example = "influxdb:http://localhost:8086";
+      type = types.string;
+    };
+
+    extraOpts = mkOption {
+      description = "Heapster extra options";
+      default = "";
+      type = types.string;
+    };
+
+    package = mkOption {
+      description = "Package to use by heapster";
+      default = pkgs.heapster;
+      type = types.package;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.heapster = {
+      wantedBy = ["multi-user.target"];
+      after = ["cadvisor.service" "kube-apiserver.service"];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/heapster --source=${cfg.source} --sink=${cfg.sink} ${cfg.extraOpts}";
+        User = "heapster";
+      };
+    };
+
+    users.extraUsers = singleton {
+      name = "heapster";
+      uid = config.ids.uids.heapster;
+      description = "Heapster user";
+    };
+  };
+}
diff --git a/nixos/modules/services/monitoring/longview.nix b/nixos/modules/services/monitoring/longview.nix
new file mode 100644
index 000000000000..770d56e60efb
--- /dev/null
+++ b/nixos/modules/services/monitoring/longview.nix
@@ -0,0 +1,118 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.longview;
+
+  pidFile = "/run/longview.pid";
+
+  apacheConf = optionalString (cfg.apacheStatusUrl != "") ''
+    location ${cfg.apacheStatusUrl}?auto
+  '';
+  mysqlConf = optionalString (cfg.mysqlUser != "") ''
+    username ${cfg.mysqlUser}
+    password ${cfg.mysqlPassword}
+  '';
+  nginxConf = optionalString (cfg.nginxStatusUrl != "") ''
+    location ${cfg.nginxStatusUrl}
+  '';
+
+in
+
+{
+  options = {
+
+    services.longview = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          If enabled, system metrics will be sent to Linode LongView.
+        '';
+      };
+
+      apiKey = mkOption {
+        type = types.str;
+        example = "01234567-89AB-CDEF-0123456789ABCDEF";
+        description = ''
+          Longview API key. To get this, look in Longview settings which
+          are found at https://manager.linode.com/longview/.
+        '';
+      };
+
+      apacheStatusUrl = mkOption {
+        type = types.str;
+        default = "";
+        example = "http://127.0.0.1/server-status";
+        description = ''
+          The Apache status page URL. If provided, Longview will
+          gather statistics from this location. This requires Apache
+          mod_status to be loaded and enabled.
+        '';
+      };
+
+      nginxStatusUrl = mkOption {
+        type = types.str;
+        default = "";
+        example = "http://127.0.0.1/nginx_status";
+        description = ''
+          The Nginx status page URL. Longview will gather statistics
+          from this URL. This requires the Nginx stub_status module to
+          be enabled and configured at the given location.
+        '';
+      };
+
+      mysqlUser = mkOption {
+        type = types.str;
+        default = "";
+        description = ''
+          The user for connecting to the MySQL database. If provided,
+          Longview will connect to MySQL and collect statistics about
+          queries, etc. This user does not need to have been granted
+          any extra privileges.
+        '';
+      };
+
+      mysqlPassword = mkOption {
+        type = types.str;
+        description = ''
+          The password corresponding to mysqlUser.  Warning: this is
+          stored in cleartext in the Nix store!
+        '';
+      };
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.longview =
+      { description = "Longview Metrics Collection";
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig.Type = "forking";
+        serviceConfig.ExecStop = "-${pkgs.coreutils}/bin/kill -TERM $MAINPID";
+        serviceConfig.ExecReload = "-${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+        serviceConfig.PIDFile = pidFile;
+        serviceConfig.ExecStart = "${pkgs.longview}/bin/longview";
+      };
+
+    environment.etc."linode/longview.key" = {
+      mode = "0400";
+      text = cfg.apiKey;
+    };
+    environment.etc."linode/longview.d/Apache.conf" = {
+      mode = "0400";
+      text = apacheConf;
+    };
+    environment.etc."linode/longview.d/MySQL.conf" = {
+      mode = "0400";
+      text = mysqlConf;
+    };
+    environment.etc."linode/longview.d/Nginx.conf" = {
+      mode = "0400";
+      text = nginxConf;
+    };
+  };
+}
diff --git a/nixos/modules/services/networking/i2pd.nix b/nixos/modules/services/networking/i2pd.nix
index 5e974555aada..c467402dbcf6 100644
--- a/nixos/modules/services/networking/i2pd.nix
+++ b/nixos/modules/services/networking/i2pd.nix
@@ -10,23 +10,59 @@ let
 
   extip = "EXTIP=\$(${pkgs.curl.bin}/bin/curl -sf \"http://jsonip.com\" | ${pkgs.gawk}/bin/awk -F'\"' '{print $4}')";
 
-  i2pSh = pkgs.writeScriptBin "i2pd" ''
+  toOneZero = b: if b then "1" else "0";
+
+  i2pdConf = pkgs.writeText "i2pd.conf" ''
+      v6 = ${toOneZero cfg.enableIPv6}
+      unreachable = ${toOneZero cfg.unreachable}
+      floodfill = ${toOneZero cfg.floodfill}
+      ${if isNull cfg.port then "" else "port = ${toString cfg.port}"}
+      httpproxyport = ${toString cfg.proxy.httpPort}
+      socksproxyport = ${toString cfg.proxy.socksPort}
+      ircaddress = ${cfg.irc.host}
+      ircport = ${toString cfg.irc.port}
+      ircdest = ${cfg.irc.dest}
+      irckeys = ${cfg.irc.keyFile}
+      eepport = ${toString cfg.eep.port}
+      ${if isNull cfg.sam.port then "" else "--samport=${toString cfg.sam.port}"}
+      eephost = ${cfg.eep.host}
+      eepkeys = ${cfg.eep.keyFile}
+  '';
+
+  i2pdTunnelConf = pkgs.writeText "i2pd-tunnels.conf" ''
+  ${flip concatMapStrings
+    (collect (tun: tun ? port && tun ? destination) cfg.outTunnels)
+    (tun: let portStr = toString tun.port; in ''
+  [${tun.name}]
+  type = client
+  destination = ${tun.destination}
+  keys = ${tun.keys}
+  address = ${tun.address}
+  port = ${toString tun.port}
+  '')
+  }
+  ${flip concatMapStrings
+    (collect (tun: tun ? port && tun ? host) cfg.outTunnels)
+    (tun: let portStr = toString tun.port; in ''
+  [${tun.name}]
+  type = server
+  destination = ${tun.destination}
+  keys = ${tun.keys}
+  host = ${tun.address}
+  port = ${tun.port}
+  inport = ${tun.inPort}
+  accesslist = ${concatStringSep "," tun.accessList}
+  '')
+  }
+  '';
+
+  i2pdSh = pkgs.writeScriptBin "i2pd" ''
     #!/bin/sh
     ${if isNull cfg.extIp then extip else ""}
-    ${pkgs.i2pd}/bin/i2p --log=1 --daemon=0 --service=0 \
-      --v6=${if cfg.enableIPv6 then "1" else "0"} \
-      --unreachable=${if cfg.unreachable then "1" else "0"} \
+    ${pkgs.i2pd}/bin/i2pd --log=1 --daemon=0 --service=0 \
       --host=${if isNull cfg.extIp then "$EXTIP" else cfg.extIp} \
-      ${if isNull cfg.port then "" else "--port=${toString cfg.port}"} \
-      --httpproxyport=${toString cfg.proxy.httpPort} \
-      --socksproxyport=${toString cfg.proxy.socksPort} \
-      --ircport=${toString cfg.irc.port} \
-      --ircdest=${cfg.irc.dest} \
-      --irckeys=${cfg.irc.keyFile} \
-      --eepport=${toString cfg.eep.port} \
-      ${if isNull cfg.sam.port then "" else "--samport=${toString cfg.sam.port}"} \
-      --eephost=${cfg.eep.host} \
-      --eepkeys=${cfg.eep.keyFile}
+      --conf=${i2pdConf} \
+      --tunnelscfg=${i2pdTunnelConf}
   '';
 
 in
@@ -63,11 +99,19 @@ in
         '';
       };
 
+      floodfill = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          If the router is declared to be unreachable and needs introduction nodes.
+        '';
+      };
+
       port = mkOption {
         type = with types; nullOr int;
         default = null;
         description = ''
-          I2P listen port. If no one is given the router will pick between 9111 and 30777.
+	        I2P listen port. If no one is given the router will pick between 9111 and 30777.
         '';
       };
 
@@ -107,6 +151,13 @@ in
       };
 
       irc = {
+        host = mkOption {
+          type = types.str;
+          default = "127.0.0.1";
+          description = ''
+            Address to forward incoming traffic to. 127.0.0.1 by default.
+          '';
+        };
         dest = mkOption {
           type = types.str;
           default = "irc.postman.i2p";
@@ -163,6 +214,94 @@ in
           '';
         };
       };
+
+      outTunnels = mkOption {
+        default = {};
+	      type = with types; loaOf optionSet;
+	      description = ''
+	      '';
+	      options = [ ({ name, config, ... }: {
+
+	        options = {
+	          name = mkOption {
+	            type = types.str;
+	            description = "The name of the tunnel.";
+	          };
+	          destination = mkOption {
+	            type = types.str;
+	            description = "Remote endpoint, I2P hostname or b32.i2p address.";
+	          };
+	          keys = mkOption {
+	            type = types.str;
+	            default = name + "-keys.dat";
+	            description = "Keyset used for tunnel identity.";
+	          };
+	          address = mkOption {
+	            type = types.str;
+	            default = "127.0.0.1";
+	            description = "Local bind address for tunnel.";
+	          };
+	          port = mkOption {
+	            type = types.int;
+	            default = 0;
+	            description = "Local tunnel listen port.";
+	          };
+	        };
+
+	        config = {
+	          name = mkDefault name;
+	        };
+
+	      }) ];
+      };
+
+      inTunnels = mkOption {
+        default = {};
+	      type = with types; loaOf optionSet;
+	      description = ''
+	      '';
+	      options = [ ({ name, config, ... }: {
+
+	        options = {
+
+	          name = mkOption {
+	            type = types.str;
+	            description = "The name of the tunnel.";
+	          };
+	          keys = mkOption {
+	            type = types.path;
+	            default = name + "-keys.dat";
+	            description = "Keyset used for tunnel identity.";
+	          };
+	          address = mkOption {
+	            type = types.str;
+	            default = "127.0.0.1";
+	            description = "Local service IP address.";
+	          };
+	          port = mkOption {
+	            type = types.int;
+	            default = 0;
+	            description = "Local tunnel listen port.";
+	          };
+	          inPort = mkOption {
+	            type = types.int;
+	            default = 0;
+	            description = "I2P service port. Default to the tunnel's listen port.";
+	          };
+	          accessList = mkOption {
+	            type = with types; listOf str;
+	            default = [];
+	            description = "I2P nodes that are allowed to connect to this service.";
+	          };
+
+	        };
+
+	        config = {
+	          name = mkDefault name;
+	        };
+
+	      }) ];
+      };
     };
   };
 
@@ -190,9 +329,8 @@ in
         User = "i2pd";
         WorkingDirectory = homeDir;
         Restart = "on-abort";
-        ExecStart = "${i2pSh}/bin/i2pd";
+        ExecStart = "${i2pdSh}/bin/i2pd";
       };
     };
   };
 }
-#
diff --git a/nixos/modules/services/networking/nix-serve.nix b/nixos/modules/services/networking/nix-serve.nix
index 4f8b9357a828..880a1d361dfe 100644
--- a/nixos/modules/services/networking/nix-serve.nix
+++ b/nixos/modules/services/networking/nix-serve.nix
@@ -56,7 +56,7 @@ in
 
       serviceConfig = {
         ExecStart = "${pkgs.nix-serve}/bin/nix-serve " +
-          "--port ${cfg.bindAddress}:${toString cfg.port} ${cfg.extraParams}";
+          "--listen ${cfg.bindAddress}:${toString cfg.port} ${cfg.extraParams}";
         User = "nix-serve";
         Group = "nogroup";
       };
diff --git a/nixos/modules/services/scheduling/cron.nix b/nixos/modules/services/scheduling/cron.nix
index 1b5e83173e8f..f5e132fd77d8 100644
--- a/nixos/modules/services/scheduling/cron.nix
+++ b/nixos/modules/services/scheduling/cron.nix
@@ -39,7 +39,7 @@ in
 
       enable = mkOption {
         type = types.bool;
-        default = true;
+        example = true;
         description = "Whether to enable the Vixie cron daemon.";
       };
 
diff --git a/nixos/modules/services/torrent/transmission.nix b/nixos/modules/services/torrent/transmission.nix
index c8fc08570408..5822fb111b82 100644
--- a/nixos/modules/services/torrent/transmission.nix
+++ b/nixos/modules/services/torrent/transmission.nix
@@ -9,7 +9,7 @@ let
   homeDir = "/var/lib/transmission";
   downloadDir = "${homeDir}/Downloads";
   incompleteDir = "${homeDir}/.incomplete";
-  
+
   settingsDir = "${homeDir}/.config/transmission-daemon";
   settingsFile = pkgs.writeText "settings.json" (builtins.toJSON fullSettings);
 
@@ -21,7 +21,7 @@ let
     else toString ''"${x}"'';
 
   # for users in group "transmission" to have access to torrents
-  fullSettings = cfg.settings // { umask = 2; };
+  fullSettings = { download-dir = downloadDir; incomplete-dir = incompleteDir; } // cfg.settings // { umask = 2; };
 in
 {
   options = {
@@ -35,7 +35,7 @@ in
           Transmission daemon can be controlled via the RPC interface using
           transmission-remote or the WebUI (http://localhost:9091/ by default).
 
-          Torrents are downloaded to ${homeDir}/Downloads/ by default and are
+          Torrents are downloaded to ${downloadDir} by default and are
           accessible to users in the "transmission" group.
         '';
       };
@@ -83,7 +83,7 @@ in
       # 1) Only the "transmission" user and group have access to torrents.
       # 2) Optionally update/force specific fields into the configuration file.
       serviceConfig.ExecStartPre = ''
-          ${pkgs.stdenv.shell} -c "chmod 770 ${homeDir} && mkdir -p ${settingsDir} ${downloadDir} ${incompleteDir} && rm -f ${settingsDir}/settings.json && cp -f ${settingsFile} ${settingsDir}/settings.json"
+          ${pkgs.stdenv.shell} -c "mkdir -p ${homeDir} ${settingsDir} ${fullSettings.download-dir} ${fullSettings.incomplete-dir} && chmod 770 ${homeDir} ${settingsDir} ${fullSettings.download-dir} ${fullSettings.incomplete-dir} && rm -f ${settingsDir}/settings.json && cp -f ${settingsFile} ${settingsDir}/settings.json"
       '';
       serviceConfig.ExecStart = "${pkgs.transmission}/bin/transmission-daemon -f --port ${toString config.services.transmission.port}";
       serviceConfig.ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
diff --git a/nixos/modules/services/web-servers/apache-httpd/wordpress.nix b/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
index 921f774bcaa0..7a0314027a3d 100644
--- a/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
@@ -17,10 +17,10 @@ let
     define('DB_HOST',     '${config.dbHost}');
     define('DB_CHARSET',  'utf8');
     $table_prefix  = '${config.tablePrefix}';
+    ${config.extraConfig}
     if ( !defined('ABSPATH') )
     	define('ABSPATH', dirname(__FILE__) . '/');
     require_once(ABSPATH . 'wp-settings.php');
-    ${config.extraConfig}
   '';
 
   # .htaccess to support pretty URLs
diff --git a/nixos/modules/services/x11/desktop-managers/kde5.nix b/nixos/modules/services/x11/desktop-managers/kde5.nix
index 6fdd5b4fa36d..dc6aa137cbd3 100644
--- a/nixos/modules/services/x11/desktop-managers/kde5.nix
+++ b/nixos/modules/services/x11/desktop-managers/kde5.nix
@@ -108,7 +108,7 @@ in
         kdeApps.okular
         kdeApps.print-manager
 
-        kdeApps.oxygen-icons
+        (kdeApps.oxygen-icons or kf5.oxygen-icons5)
         pkgs.hicolor_icon_theme
 
         plasma5.kde-gtk-config
@@ -155,7 +155,7 @@ in
         GST_PLUGIN_SYSTEM_PATH_1_0 = [ "/lib/gstreamer-1.0" ];
       };
 
-    fonts.fonts = [ plasma5.oxygen-fonts ];
+    fonts.fonts = [ (plasma5.oxygen-fonts or pkgs.noto-fonts) ];
 
     programs.ssh.askPassword = "${plasma5.ksshaskpass}/bin/ksshaskpass";
 
diff --git a/nixos/modules/services/x11/desktop-managers/xfce.nix b/nixos/modules/services/x11/desktop-managers/xfce.nix
index 88eefa13de35..33b6dd32c193 100644
--- a/nixos/modules/services/x11/desktop-managers/xfce.nix
+++ b/nixos/modules/services/x11/desktop-managers/xfce.nix
@@ -18,6 +18,14 @@ in
       description = "Enable the Xfce desktop environment.";
     };
 
+    services.xserver.desktopManager.xfce.thunarPlugins = mkOption {
+      default = [];
+      type = types.listOf types.package;
+      example = literalExample "[ pkgs.xfce.thunar-archive-plugin ]";
+      description = ''
+        A list of plugin that should be installed with Thunar.
+      '';
+    };
   };
 
 
@@ -49,7 +57,7 @@ in
         pkgs.xfce.mousepad
         pkgs.xfce.ristretto
         pkgs.xfce.terminal
-        pkgs.xfce.thunar
+       (pkgs.xfce.thunar.override { thunarPlugins = cfg.thunarPlugins; })
         pkgs.xfce.xfce4icontheme
         pkgs.xfce.xfce4panel
         pkgs.xfce.xfce4session
diff --git a/nixos/modules/services/x11/display-managers/gdm.nix b/nixos/modules/services/x11/display-managers/gdm.nix
index 58eb6f050131..52847d2f8d2c 100644
--- a/nixos/modules/services/x11/display-managers/gdm.nix
+++ b/nixos/modules/services/x11/display-managers/gdm.nix
@@ -162,7 +162,7 @@ in
 
       gdm.text = ''
         auth     requisite      pam_nologin.so
-        auth     required       pam_env.so
+        auth     required       pam_env.so envfile=${config.system.build.pamEnvironment}
 
         auth     required       pam_succeed_if.so uid >= 1000 quiet
         auth     optional       ${gnome3.gnome_keyring}/lib/security/pam_gnome_keyring.so
diff --git a/nixos/modules/services/x11/display-managers/lightdm.nix b/nixos/modules/services/x11/display-managers/lightdm.nix
index 2dfa07ac6cb1..48fab0243566 100644
--- a/nixos/modules/services/x11/display-managers/lightdm.nix
+++ b/nixos/modules/services/x11/display-managers/lightdm.nix
@@ -150,7 +150,7 @@ in
       allowNullPassword = true;
       startSession = true;
       text = ''
-        auth     required pam_env.so
+        auth     required pam_env.so envfile=${config.system.build.pamEnvironment}
         auth     required pam_permit.so
 
         account  required pam_permit.so
diff --git a/nixos/modules/services/x11/display-managers/slim.nix b/nixos/modules/services/x11/display-managers/slim.nix
index 545f4283828a..e3db0230d3b7 100644
--- a/nixos/modules/services/x11/display-managers/slim.nix
+++ b/nixos/modules/services/x11/display-managers/slim.nix
@@ -18,6 +18,7 @@ let
       halt_cmd ${config.systemd.package}/sbin/shutdown -h now
       reboot_cmd ${config.systemd.package}/sbin/shutdown -r now
       ${optionalString (cfg.defaultUser != null) ("default_user " + cfg.defaultUser)}
+      ${optionalString (cfg.defaultUser != null) ("focus_password yes")}
       ${optionalString cfg.autoLogin "auto_login yes"}
       ${cfg.extraConfig}
     '';
@@ -57,8 +58,8 @@ in
       theme = mkOption {
         type = types.nullOr types.path;
         default = pkgs.fetchurl {
-          url    = https://github.com/jagajaga/nixos-slim-theme/archive/1.1.tar.gz;
-          sha256 = "66c3020a6716130a20c3898567339b990fbd7888a3b7bbcb688f6544d1c05c31";
+          url = "https://github.com/jagajaga/nixos-slim-theme/archive/2.0.tar.gz";
+          sha256 = "0lldizhigx7bjhxkipii87y432hlf5wdvamnfxrryf9z7zkfypc8";
         };
         example = literalExample ''
           pkgs.fetchurl {
diff --git a/nixos/modules/system/boot/systemd-unit-options.nix b/nixos/modules/system/boot/systemd-unit-options.nix
index a7a334dec285..d4cab93b26b8 100644
--- a/nixos/modules/system/boot/systemd-unit-options.nix
+++ b/nixos/modules/system/boot/systemd-unit-options.nix
@@ -170,6 +170,15 @@ in rec {
       '';
     };
 
+    onFailure = mkOption {
+      default = [];
+      type = types.listOf types.str;
+      description = ''
+        A list of one or more units that are activated when
+        this unit enters the "failed" state.
+      '';
+    };
+
   };
 
 
diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index 0b7647093e0f..d145baeebe93 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -199,6 +199,8 @@ let
           { X-Restart-Triggers = toString config.restartTriggers; }
         // optionalAttrs (config.description != "") {
           Description = config.description;
+        } // optionalAttrs (config.onFailure != []) {
+          OnFailure = toString config.onFailure;
         };
     };
   };
diff --git a/nixos/modules/tasks/filesystems.nix b/nixos/modules/tasks/filesystems.nix
index dbe0c9c6e03a..d0dd7670157e 100644
--- a/nixos/modules/tasks/filesystems.nix
+++ b/nixos/modules/tasks/filesystems.nix
@@ -58,6 +58,15 @@ let
         '';
       };
 
+      formatOptions = mkOption {
+        default = "";
+        type = types.str;
+        description = ''
+          If <option>autoFormat</option> option is set specifies
+          extra options passed to mkfs.
+        '';
+      };
+
       autoResize = mkOption {
         default = false;
         type = types.bool;
@@ -81,6 +90,9 @@ let
       mountPoint = mkDefault name;
       device = mkIf (config.fsType == "tmpfs") (mkDefault config.fsType);
       options = mkIf config.autoResize "x-nixos.autoresize";
+
+      # -F needed to allow bare block device without partitions
+      formatOptions = mkIf ((builtins.substring 0 3 config.fsType) == "ext") (mkDefault "-F");
     };
 
   };
@@ -192,8 +204,6 @@ in
           let
             mountPoint' = escapeSystemdPath fs.mountPoint;
             device' = escapeSystemdPath fs.device;
-            # -F needed to allow bare block device without partitions
-            mkfsOpts = optional ((builtins.substring 0 3 fs.fsType) == "ext") "-F";
           in nameValuePair "mkfs-${device'}"
           { description = "Initialisation of Filesystem ${fs.device}";
             wantedBy = [ "${mountPoint'}.mount" ];
@@ -208,7 +218,7 @@ in
                 type=$(blkid -p -s TYPE -o value "${fs.device}" || true)
                 if [ -z "$type" ]; then
                   echo "creating ${fs.fsType} filesystem on ${fs.device}..."
-                  mkfs.${fs.fsType} ${concatStringsSep " " mkfsOpts} "${fs.device}"
+                  mkfs.${fs.fsType} ${fs.formatOptions} "${fs.device}"
                 fi
               '';
             unitConfig.RequiresMountsFor = [ "${dirOf fs.device}" ];
diff --git a/nixos/modules/tasks/scsi-link-power-management.nix b/nixos/modules/tasks/scsi-link-power-management.nix
index a74023dec21a..484c0a0186d7 100644
--- a/nixos/modules/tasks/scsi-link-power-management.nix
+++ b/nixos/modules/tasks/scsi-link-power-management.nix
@@ -2,18 +2,19 @@
 
 with lib;
 
+let cfg = config.powerManagement.scsiLinkPolicy; in
+
 {
   ###### interface
 
   options = {
 
     powerManagement.scsiLinkPolicy = mkOption {
-      default = "";
-      example = "min_power";
-      type = types.str;
+      default = null;
+      type = types.nullOr (types.enum [ "min_power" "max_performance" "medium_power" ]);
       description = ''
-        Configure the SCSI link power management policy. By default,
-        the kernel configures "max_performance".
+        SCSI link power management policy. The kernel default is
+        "max_performance".
       '';
     };
 
@@ -22,25 +23,10 @@ with lib;
 
   ###### implementation
 
-  config = mkIf (config.powerManagement.scsiLinkPolicy != "") {
-
-    jobs."scsi-link-pm" =
-      { description = "SCSI Link Power Management Policy";
-
-        startOn = "stopped udevtrigger";
-
-        task = true;
-
-        unitConfig.ConditionPathIsReadWrite = "/sys/class/scsi_host";
-
-        script = ''
-          shopt -s nullglob
-          for x in /sys/class/scsi_host/host*/link_power_management_policy; do
-            echo ${config.powerManagement.scsiLinkPolicy} > $x
-          done
-        '';
-      };
-
+  config = mkIf (cfg != null) {
+    services.udev.extraRules = ''
+      SUBSYSTEM=="scsi_host", ACTION=="add", KERNEL=="host*", ATTR{link_power_management_policy}="${cfg}"
+    '';
   };
 
 }
diff --git a/nixos/modules/virtualisation/docker.nix b/nixos/modules/virtualisation/docker.nix
index 0c642bf3b816..718ca0851477 100644
--- a/nixos/modules/virtualisation/docker.nix
+++ b/nixos/modules/virtualisation/docker.nix
@@ -31,16 +31,11 @@ in
     socketActivation =
       mkOption {
         type = types.bool;
-        default = false;
+        default = true;
         description =
           ''
             This option enables docker with socket activation. I.e. docker will
             start when first called by client.
-
-            Note: This is false by default because systemd lower than 214 that
-            nixos uses so far, doesn't support SocketGroup option, so socket
-            created by docker has root group now. This will likely be changed
-            in future.  So set this option explicitly to false if you wish.
           '';
       };
     storageDriver =
diff --git a/nixos/release.nix b/nixos/release.nix
index 1a1ed4bca410..f0df3fe3e1ef 100644
--- a/nixos/release.nix
+++ b/nixos/release.nix
@@ -276,6 +276,7 @@ in rec {
   tests.networkingProxy = callTest tests/networking-proxy.nix {};
   tests.nfs3 = callTest tests/nfs.nix { version = 3; };
   tests.nfs4 = callTest tests/nfs.nix { version = 4; };
+  tests.nixosPinVersion = callTest tests/nixos-pin-version.nix {};
   tests.nsd = callTest tests/nsd.nix {};
   tests.openssh = callTest tests/openssh.nix {};
   tests.panamax = hydraJob (import tests/panamax.nix { system = "x86_64-linux"; });
@@ -284,6 +285,7 @@ in rec {
   tests.proxy = callTest tests/proxy.nix {};
   tests.quake3 = callTest tests/quake3.nix {};
   tests.runInMachine = callTest tests/run-in-machine.nix {};
+  tests.sddm = callTest tests/sddm.nix {};
   tests.simple = callTest tests/simple.nix {};
   tests.tomcat = callTest tests/tomcat.nix {};
   tests.udisks2 = callTest tests/udisks2.nix {};
diff --git a/nixos/tests/nixos-pin-version.nix b/nixos/tests/nixos-pin-version.nix
new file mode 100644
index 000000000000..91fba2e759d2
--- /dev/null
+++ b/nixos/tests/nixos-pin-version.nix
@@ -0,0 +1,57 @@
+{ system ? builtins.currentSystem }:
+
+with import ../lib/testing.nix { inherit system; };
+let
+in
+
+pkgs.stdenv.mkDerivation rec {
+  name = "nixos-pin-version";
+  src = ../..;
+  buildInputs = with pkgs; [ nix gnugrep ];
+
+    withoutPath = pkgs.writeText "configuration.nix" ''
+    {
+      nixos.extraModules = [ ({lib, ...}: { system.nixosRevision = lib.mkForce "ABCDEF"; }) ];
+    }
+  '';
+
+  withPath = pkgs.writeText "configuration.nix" ''
+    {
+      nixos.path = ${src}/nixos ;
+      nixos.extraModules = [ ({lib, ...}: { system.nixosRevision = lib.mkForce "ABCDEF"; }) ];
+    }
+  '';
+
+  phases = "buildPhase";
+  buildPhase = ''
+    datadir="${pkgs.nix}/share"
+    export TEST_ROOT=$(pwd)/test-tmp
+    export NIX_STORE_DIR=$TEST_ROOT/store
+    export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
+    export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
+    export NIX_STATE_DIR=$TEST_ROOT/var/nix
+    export NIX_DB_DIR=$TEST_ROOT/db
+    export NIX_CONF_DIR=$TEST_ROOT/etc
+    export NIX_MANIFESTS_DIR=$TEST_ROOT/var/nix/manifests
+    export NIX_BUILD_HOOK=
+    export PAGER=cat
+    cacheDir=$TEST_ROOT/binary-cache
+    nix-store --init
+
+    export NIX_PATH="nixpkgs=$src:nixos=$src/nixos:nixos-config=${withoutPath}" ;
+    if test $(nix-instantiate $src/nixos -A config.system.nixosRevision --eval-only) != '"ABCDEF"' ; then :;
+    else
+      echo "Unexpected re-entry without the nixos.path option defined.";
+      exit 1;
+    fi;
+
+    export NIX_PATH="nixpkgs=$src:nixos=$src/nixos:nixos-config=${withPath}" ;
+    if test $(nix-instantiate $src/nixos -A config.system.nixosRevision --eval-only) = '"ABCDEF"' ; then :;
+    else
+      echo "Expected a re-entry when the nixos.path option is defined.";
+      exit 1;
+    fi;
+
+    touch $out;
+  '';
+}
diff --git a/nixos/tests/sddm.nix b/nixos/tests/sddm.nix
new file mode 100644
index 000000000000..e11b5714d5c2
--- /dev/null
+++ b/nixos/tests/sddm.nix
@@ -0,0 +1,28 @@
+import ./make-test.nix ({ pkgs, ...} : {
+  name = "sddm";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ ttuegel ];
+  };
+
+  machine = { lib, ... }: {
+    imports = [ ./common/user-account.nix ];
+    services.xserver.enable = true;
+    services.xserver.displayManager.sddm = {
+      enable = true;
+      autoLogin = {
+        enable = true;
+        user = "alice";
+      };
+    };
+    services.xserver.windowManager.default = "icewm";
+    services.xserver.windowManager.icewm.enable = true;
+    services.xserver.desktopManager.default = "none";
+  };
+
+  enableOCR = true;
+
+  testScript = { nodes, ... }: ''
+    startAll;
+    $machine->waitForWindow("^IceWM ");
+  '';
+})