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-rw-r--r--nixos/modules/services/databases/postgresql.nix40
-rw-r--r--nixos/modules/services/databases/postgresql.xml72
-rw-r--r--nixos/modules/services/logging/graylog.nix3
-rw-r--r--nixos/modules/services/misc/gitea.nix18
-rw-r--r--nixos/modules/services/misc/gitlab.nix1
-rw-r--r--nixos/modules/services/misc/greenclip.nix31
-rw-r--r--nixos/modules/services/misc/tiddlywiki.nix52
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters.nix56
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters.xml42
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/bind.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/blackbox.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/collectd.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/dnsmasq.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/dovecot.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/fritzbox.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/json.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/minio.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/nginx.nix26
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/node.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/postfix.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/snmp.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/surfboard.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/tor.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/unifi.nix2
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/varnish.nix3
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/wireguard.nix14
-rw-r--r--nixos/modules/services/networking/bind.nix4
-rw-r--r--nixos/modules/services/networking/thelounge.nix75
-rw-r--r--nixos/modules/services/system/nscd.conf18
-rw-r--r--nixos/modules/services/system/nscd.nix31
-rw-r--r--nixos/modules/services/web-apps/nextcloud.nix33
-rw-r--r--nixos/modules/services/web-apps/nextcloud.xml64
-rw-r--r--nixos/modules/services/web-apps/tt-rss.nix62
-rw-r--r--nixos/modules/services/web-servers/apache-httpd/tomcat-connector.nix103
-rw-r--r--nixos/modules/services/x11/desktop-managers/pantheon.nix2
-rw-r--r--nixos/modules/services/x11/desktop-managers/plasma5.nix17
36 files changed, 493 insertions, 302 deletions
diff --git a/nixos/modules/services/databases/postgresql.nix b/nixos/modules/services/databases/postgresql.nix
index bc47e7e1e0dc..37d44e30fbeb 100644
--- a/nixos/modules/services/databases/postgresql.nix
+++ b/nixos/modules/services/databases/postgresql.nix
@@ -6,26 +6,10 @@ let
 
   cfg = config.services.postgresql;
 
-  # see description of extraPlugins
-  postgresqlAndPlugins = pg:
-    if cfg.extraPlugins == [] then pg
-    else pkgs.buildEnv {
-      name = "postgresql-and-plugins-${(builtins.parseDrvName pg.name).version}";
-      paths = [ pg pg.lib ] ++ cfg.extraPlugins;
-      # We include /bin to ensure the $out/bin directory is created which is
-      # needed because we'll be removing files from that directory in postBuild
-      # below. See #22653
-      pathsToLink = [ "/" "/bin" ];
-      buildInputs = [ pkgs.makeWrapper ];
-      postBuild =
-        ''
-          rm $out/bin/{pg_config,postgres,pg_ctl}
-          cp --target-directory=$out/bin ${pg}/bin/{postgres,pg_config,pg_ctl}
-          wrapProgram $out/bin/postgres --set NIX_PGLIBDIR $out/lib
-        '';
-    };
-
-  postgresql = postgresqlAndPlugins cfg.package;
+  postgresql =
+    if cfg.extraPlugins == []
+      then cfg.package
+      else cfg.package.withPackages (_: cfg.extraPlugins);
 
   # The main PostgreSQL configuration file.
   configFile = pkgs.writeText "postgresql.conf"
@@ -58,7 +42,7 @@ in
 
       package = mkOption {
         type = types.package;
-        example = literalExample "pkgs.postgresql_9_6";
+        example = literalExample "pkgs.postgresql_11";
         description = ''
           PostgreSQL package to use.
         '';
@@ -74,7 +58,7 @@ in
 
       dataDir = mkOption {
         type = types.path;
-        example = "/var/lib/postgresql/9.6";
+        example = "/var/lib/postgresql/11";
         description = ''
           Data directory for PostgreSQL.
         '';
@@ -195,17 +179,11 @@ in
       extraPlugins = mkOption {
         type = types.listOf types.path;
         default = [];
-        example = literalExample "[ (pkgs.postgis.override { postgresql = pkgs.postgresql_9_4; }) ]";
+        example = literalExample "with pkgs.postgresql_11.pkgs; [ postgis pg_repack ]";
         description = ''
-          When this list contains elements a new store path is created.
-          PostgreSQL and the elements are symlinked into it. Then pg_config,
-          postgres and pg_ctl are copied to make them use the new
-          $out/lib directory as pkglibdir. This makes it possible to use postgis
-          without patching the .sql files which reference $libdir/postgis-1.5.
+          List of PostgreSQL plugins. PostgreSQL version for each plugin should
+          match version for <literal>services.postgresql.package</literal> value.
         '';
-        # Note: the duplication of executables is about 4MB size.
-        # So a nicer solution was patching postgresql to allow setting the
-        # libdir explicitely.
       };
 
       extraConfig = mkOption {
diff --git a/nixos/modules/services/databases/postgresql.xml b/nixos/modules/services/databases/postgresql.xml
index 00bb02dcc5bf..72d4a8249a32 100644
--- a/nixos/modules/services/databases/postgresql.xml
+++ b/nixos/modules/services/databases/postgresql.xml
@@ -27,10 +27,10 @@
    <filename>configuration.nix</filename>:
 <programlisting>
 <xref linkend="opt-services.postgresql.enable"/> = true;
-<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql_9_4;
+<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql_11;
 </programlisting>
    Note that you are required to specify the desired version of PostgreSQL
-   (e.g. <literal>pkgs.postgresql_9_4</literal>). Since upgrading your
+   (e.g. <literal>pkgs.postgresql_11</literal>). Since upgrading your
    PostgreSQL version requires a database dump and reload (see below), NixOS
    cannot provide a default value for
    <xref linkend="opt-services.postgresql.package"/> such as the most recent
@@ -52,7 +52,7 @@ Type "help" for help.
 
   <para>
    By default, PostgreSQL stores its databases in
-   <filename>/var/db/postgresql</filename>. You can override this using
+   <filename>/var/lib/postgresql/$psqlSchema</filename>. You can override this using
    <xref linkend="opt-services.postgresql.dataDir"/>, e.g.
 <programlisting>
 <xref linkend="opt-services.postgresql.dataDir"/> = "/data/postgresql";
@@ -74,4 +74,70 @@ Type "help" for help.
    <link linkend="opt-services.postgresql.enable">here</link>.
   </para>
  </section>
+ <section xml:id="module-services-postgres-plugins">
+  <title>Plugins</title>
+
+  <para>
+   Plugins collection for each PostgreSQL version can be accessed with
+   <literal>.pkgs</literal>. For example, for
+   <literal>pkgs.postgresql_11</literal> package, its plugin collection is
+   accessed by <literal>pkgs.postgresql_11.pkgs</literal>:
+<screen>
+<prompt>$ </prompt>nix repl '&lt;nixpkgs&gt;'
+
+Loading '&lt;nixpkgs&gt;'...
+Added 10574 variables.
+
+<prompt>nix-repl&gt; </prompt>postgresql_11.pkgs.&lt;TAB&gt;&lt;TAB&gt;
+postgresql_11.pkgs.cstore_fdw        postgresql_11.pkgs.pg_repack
+postgresql_11.pkgs.pg_auto_failover  postgresql_11.pkgs.pg_safeupdate
+postgresql_11.pkgs.pg_bigm           postgresql_11.pkgs.pg_similarity
+postgresql_11.pkgs.pg_cron           postgresql_11.pkgs.pg_topn
+postgresql_11.pkgs.pg_hll            postgresql_11.pkgs.pgjwt
+postgresql_11.pkgs.pg_partman        postgresql_11.pkgs.pgroonga
+...
+</screen>
+  </para>
+  <para>
+    To add plugins via NixOS configuration, set <literal>services.postgresql.extraPlugins</literal>:
+<programlisting>
+<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql_11;
+<xref linkend="opt-services.postgresql.extraPlugins"/> = with pkgs.postgresql_11.pkgs; [
+  pg_repack
+  postgis
+];
+</programlisting>
+  </para>
+  <para>
+   You can build custom PostgreSQL-with-plugins (to be used outside of NixOS) using
+   function <literal>.withPackages</literal>. For example, creating a custom
+   PostgreSQL package in an overlay can look like:
+<programlisting>
+self: super: {
+  postgresql_custom = self.postgresql_11.withPackages (ps: [
+    ps.pg_repack
+    ps.postgis
+  ]);
+}
+</programlisting>
+  </para>
+  <para>
+    Here's a recipe on how to override a particular plugin through an overlay:
+<programlisting>
+self: super: {
+  postgresql_11 = super.postgresql_11.override { this = self.postgresql_11; } // {
+    pkgs = super.postgresql_11.pkgs // {
+      pg_repack = super.postgresql_11.pkgs.pg_repack.overrideAttrs (_: {
+        name = "pg_repack-v20181024";
+        src = self.fetchzip {
+          url = "https://github.com/reorg/pg_repack/archive/923fa2f3c709a506e111cc963034bf2fd127aa00.tar.gz";
+          sha256 = "17k6hq9xaax87yz79j773qyigm4fwk8z4zh5cyp6z0sxnwfqxxw5";
+        };
+      });
+    };
+  };
+}
+</programlisting>
+  </para>
+ </section>
 </chapter>
diff --git a/nixos/modules/services/logging/graylog.nix b/nixos/modules/services/logging/graylog.nix
index c8c4a9ff06db..a889a44d4b2b 100644
--- a/nixos/modules/services/logging/graylog.nix
+++ b/nixos/modules/services/logging/graylog.nix
@@ -150,6 +150,9 @@ in
         rm -rf /var/lib/graylog/plugins || true
         mkdir -p /var/lib/graylog/plugins -m 755
 
+        mkdir -p "$(dirname ${cfg.nodeIdFile})"
+        chown -R ${cfg.user} "$(dirname ${cfg.nodeIdFile})"
+
         for declarativeplugin in `ls ${glPlugins}/bin/`; do
           ln -sf ${glPlugins}/bin/$declarativeplugin /var/lib/graylog/plugins/$declarativeplugin
         done
diff --git a/nixos/modules/services/misc/gitea.nix b/nixos/modules/services/misc/gitea.nix
index 5a964e672ede..59c1c104b9b9 100644
--- a/nixos/modules/services/misc/gitea.nix
+++ b/nixos/modules/services/misc/gitea.nix
@@ -55,6 +55,11 @@ let
     [service]
     DISABLE_REGISTRATION = ${boolToString cfg.disableRegistration}
 
+    ${optionalString (cfg.mailerPasswordFile != null) ''
+      [mailer]
+      PASSWD = #mailerpass#
+    ''}
+
     ${cfg.extraConfig}
   '';
 in
@@ -255,6 +260,13 @@ in
         description = "Upper level of template and static files path.";
       };
 
+      mailerPasswordFile = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        example = "/var/lib/secrets/gitea/mailpw";
+        description = "Path to a file containing the SMTP password.";
+      };
+
       disableRegistration = mkEnableOption "the registration lock" // {
         description = ''
           By default any user can create an account on this <literal>gitea</literal> instance.
@@ -344,9 +356,15 @@ in
           KEY="$(head -n1 ${secretKey})"
           DBPASS="$(head -n1 ${cfg.database.passwordFile})"
           JWTSECRET="$(head -n1 ${jwtSecret})"
+          ${if (cfg.mailerPasswordFile == null) then ''
+            MAILERPASSWORD="#mailerpass#"
+          '' else ''
+            MAILERPASSWORD="$(head -n1 ${cfg.mailerPasswordFile} || :)"
+          ''}
           sed -e "s,#secretkey#,$KEY,g" \
               -e "s,#dbpass#,$DBPASS,g" \
               -e "s,#jwtsecet#,$JWTSECET,g" \
+              -e "s,#mailerpass#,$MAILERPASSWORD,g" \
               -i ${runConfig}
           chmod 640 ${runConfig} ${secretKey} ${jwtSecret}
         ''}
diff --git a/nixos/modules/services/misc/gitlab.nix b/nixos/modules/services/misc/gitlab.nix
index 52589b593b44..9fce9419a1af 100644
--- a/nixos/modules/services/misc/gitlab.nix
+++ b/nixos/modules/services/misc/gitlab.nix
@@ -585,6 +585,7 @@ in {
       after = [ "network.target" ];
       wantedBy = [ "multi-user.target" ];
       path = with pkgs; [
+        exiftool
         gitAndTools.git
         gnutar
         gzip
diff --git a/nixos/modules/services/misc/greenclip.nix b/nixos/modules/services/misc/greenclip.nix
new file mode 100644
index 000000000000..9152a782d7f0
--- /dev/null
+++ b/nixos/modules/services/misc/greenclip.nix
@@ -0,0 +1,31 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.greenclip;
+in {
+
+  options.services.greenclip = {
+    enable = mkEnableOption "Greenclip daemon";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.haskellPackages.greenclip;
+      defaultText = "pkgs.haskellPackages.greenclip";
+      description = "greenclip derivation to use.";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.greenclip = {
+      enable      = true;
+      description = "greenclip daemon";
+      wantedBy = [ "graphical-session.target" ];
+      after    = [ "graphical-session.target" ];
+      serviceConfig.ExecStart = "${cfg.package}/bin/greenclip daemon";
+    };
+
+    environment.systemPackages = [ cfg.package ];
+  };
+}
diff --git a/nixos/modules/services/misc/tiddlywiki.nix b/nixos/modules/services/misc/tiddlywiki.nix
new file mode 100644
index 000000000000..2adc08f6cfed
--- /dev/null
+++ b/nixos/modules/services/misc/tiddlywiki.nix
@@ -0,0 +1,52 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.services.tiddlywiki;
+  listenParams = concatStrings (mapAttrsToList (n: v: " '${n}=${toString v}' ") cfg.listenOptions);
+  exe = "${pkgs.nodePackages.tiddlywiki}/lib/node_modules/.bin/tiddlywiki";
+  name = "tiddlywiki";
+  dataDir = "/var/lib/" + name;
+
+in {
+
+  options.services.tiddlywiki = {
+
+    enable = mkEnableOption "TiddlyWiki nodejs server";
+
+    listenOptions = mkOption {
+      type = types.attrs;
+      default = {};
+      example = {
+        credentials = "../credentials.csv";
+        readers="(authenticated)";
+        port = 3456;
+      };
+      description = ''
+        Parameters passed to <literal>--listen</literal> command.
+        Refer to <link xlink:href="https://tiddlywiki.com/#WebServer"/>
+        for details on supported values.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd = {
+      services.tiddlywiki = {
+        description = "TiddlyWiki nodejs server";
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          Type = "simple";
+          Restart = "on-failure";
+          DynamicUser = true;
+          StateDirectory = name;
+          ExecStartPre = "-${exe} ${dataDir} --init server";
+          ExecStart = "${exe} ${dataDir} --listen ${listenParams}";
+        };
+      };
+    };
+  };
+}
diff --git a/nixos/modules/services/monitoring/prometheus/exporters.nix b/nixos/modules/services/monitoring/prometheus/exporters.nix
index 20e7eba43412..802281e71643 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters.nix
@@ -1,8 +1,10 @@
-{ config, pkgs, lib, ... }:
-
-with lib;
+{ config, pkgs, lib, options, ... }:
 
 let
+  inherit (lib) concatStrings foldl foldl' genAttrs literalExample maintainers
+                mapAttrsToList mkDefault mkEnableOption mkIf mkMerge mkOption
+                optional types;
+
   cfg = config.services.prometheus.exporters;
 
   # each attribute in `exporterOpts` is expected to have specified:
@@ -17,25 +19,28 @@ let
   #  Note that `extraOpts` is optional, but a script for the exporter's
   #  systemd service must be provided by specifying either
   #  `serviceOpts.script` or `serviceOpts.serviceConfig.ExecStart`
-  exporterOpts = {
-    blackbox  = import ./exporters/blackbox.nix  { inherit config lib pkgs; };
-    collectd  = import ./exporters/collectd.nix  { inherit config lib pkgs; };
-    dnsmasq   = import ./exporters/dnsmasq.nix   { inherit config lib pkgs; };
-    dovecot   = import ./exporters/dovecot.nix   { inherit config lib pkgs; };
-    fritzbox  = import ./exporters/fritzbox.nix  { inherit config lib pkgs; };
-    json      = import ./exporters/json.nix      { inherit config lib pkgs; };
-    minio     = import ./exporters/minio.nix     { inherit config lib pkgs; };
-    nginx     = import ./exporters/nginx.nix     { inherit config lib pkgs; };
-    node      = import ./exporters/node.nix      { inherit config lib pkgs; };
-    postfix   = import ./exporters/postfix.nix   { inherit config lib pkgs; };
-    snmp      = import ./exporters/snmp.nix      { inherit config lib pkgs; };
-    surfboard = import ./exporters/surfboard.nix { inherit config lib pkgs; };
-    tor       = import ./exporters/tor.nix       { inherit config lib pkgs; };
-    unifi     = import ./exporters/unifi.nix     { inherit config lib pkgs; };
-    varnish   = import ./exporters/varnish.nix   { inherit config lib pkgs; };
-    bind      = import ./exporters/bind.nix      { inherit config lib pkgs; };
-    wireguard = import ./exporters/wireguard.nix { inherit config lib pkgs; };
-  };
+
+  exporterOpts = genAttrs [
+    "bind"
+    "blackbox"
+    "collectd"
+    "dnsmasq"
+    "dovecot"
+    "fritzbox"
+    "json"
+    "minio"
+    "nginx"
+    "node"
+    "postfix"
+    "snmp"
+    "surfboard"
+    "tor"
+    "unifi"
+    "varnish"
+    "wireguard"
+  ] (name:
+    import (./. + "/exporters/${name}.nix") { inherit config lib pkgs options; }
+  );
 
   mkExporterOpts = ({ name, port }: {
     enable = mkEnableOption "the prometheus ${name} exporter";
@@ -97,9 +102,10 @@ let
     };
   });
 
-  mkSubModule = { name, port, extraOpts, ... }: {
+  mkSubModule = { name, port, extraOpts, imports }: {
     ${name} = mkOption {
       type = types.submodule {
+        inherit imports;
         options = (mkExporterOpts {
           inherit name port;
         } // extraOpts);
@@ -112,13 +118,15 @@ let
   mkSubModules = (foldl' (a: b: a//b) {}
     (mapAttrsToList (name: opts: mkSubModule {
       inherit name;
-      inherit (opts) port serviceOpts;
+      inherit (opts) port;
       extraOpts = opts.extraOpts or {};
+      imports = opts.imports or [];
     }) exporterOpts)
   );
 
   mkExporterConf = { name, conf, serviceOpts }:
     mkIf conf.enable {
+      warnings = conf.warnings or [];
       networking.firewall.extraCommands = mkIf conf.openFirewall (concatStrings [
         "ip46tables -A nixos-fw ${conf.firewallFilter} "
         "-m comment --comment ${name}-exporter -j nixos-fw-accept"
diff --git a/nixos/modules/services/monitoring/prometheus/exporters.xml b/nixos/modules/services/monitoring/prometheus/exporters.xml
index 81ac998729be..f6cd1ef57d04 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters.xml
+++ b/nixos/modules/services/monitoring/prometheus/exporters.xml
@@ -17,7 +17,7 @@
    exporter</link>, it provides hardware and OS metrics from the host it's
    running on. The exporter could be configured as follows:
 <programlisting>
-  services.promtheus.exporters.node = {
+  services.prometheus.exporters.node = {
     enable = true;
     enabledCollectors = [
       "logind"
@@ -113,7 +113,7 @@
      specific options and configuration:
 <programlisting>
 # nixpgs/nixos/modules/services/prometheus/exporters/postfix.nix
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
@@ -184,4 +184,42 @@ in
    </listitem>
   </itemizedlist>
  </section>
+ <section xml:id="module-services-prometheus-exporters-update-exporter-module">
+  <title>Updating an exporter module</title>
+   <para>
+     Should an exporter option change at some point, it is possible to add
+     information about the change to the exporter definition similar to
+     <literal>nixpkgs/nixos/modules/rename.nix</literal>:
+<programlisting>
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.nginx;
+in
+{
+  port = 9113;
+  extraOpts = {
+    # additional module options
+    # ...
+  };
+  serviceOpts = {
+    # service configuration
+    # ...
+  };
+  imports = [
+    # 'services.prometheus.exporters.nginx.telemetryEndpoint' -> 'services.prometheus.exporters.nginx.telemetryPath'
+    (mkRenamedOptionModule [ "telemetryEndpoint" ] [ "telemetryPath" ])
+
+    # removed option 'services.prometheus.exporters.nginx.insecure'
+    (mkRemovedOptionModule [ "insecure" ] ''
+      This option was replaced by 'prometheus.exporters.nginx.sslVerify' which defaults to true.
+    '')
+    ({ options.warnings = options.warnings; })
+  ];
+}
+</programlisting>
+    </para>
+  </section>
 </chapter>
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/bind.nix b/nixos/modules/services/monitoring/prometheus/exporters/bind.nix
index a9746c4d65d5..7bcd03e0706d 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/bind.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/bind.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/blackbox.nix b/nixos/modules/services/monitoring/prometheus/exporters/blackbox.nix
index d09d1c4f3663..bf78cb15ad92 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/blackbox.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/blackbox.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/collectd.nix b/nixos/modules/services/monitoring/prometheus/exporters/collectd.nix
index 0eba3527162d..8c8ea08b5d42 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/collectd.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/collectd.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/dnsmasq.nix b/nixos/modules/services/monitoring/prometheus/exporters/dnsmasq.nix
index b1fab85109af..1b2ab93b302c 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/dnsmasq.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/dnsmasq.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/dovecot.nix b/nixos/modules/services/monitoring/prometheus/exporters/dovecot.nix
index c47e87a3dc35..039242b730c6 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/dovecot.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/dovecot.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/fritzbox.nix b/nixos/modules/services/monitoring/prometheus/exporters/fritzbox.nix
index 530206681d36..f2f7dcf06a8d 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/fritzbox.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/fritzbox.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/json.nix b/nixos/modules/services/monitoring/prometheus/exporters/json.nix
index a5494e85e016..c0b677f2f62d 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/json.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/json.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/minio.nix b/nixos/modules/services/monitoring/prometheus/exporters/minio.nix
index 3cc4ffdbc8fd..2ecc62b0d79a 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/minio.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/minio.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/nginx.nix b/nixos/modules/services/monitoring/prometheus/exporters/nginx.nix
index 431dd8b4ead7..7d819b04adaa 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/nginx.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/nginx.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
@@ -16,32 +16,40 @@ in
         Can be enabled with services.nginx.statusPage = true.
       '';
     };
-    telemetryEndpoint = mkOption {
+    telemetryPath = mkOption {
       type = types.str;
       default = "/metrics";
       description = ''
         Path under which to expose metrics.
       '';
     };
-    insecure = mkOption {
+    sslVerify = mkOption {
       type = types.bool;
       default = true;
       description = ''
-        Ignore server certificate if using https.
+        Whether to perform certificate verification for https.
       '';
     };
+
   };
   serviceOpts = {
     serviceConfig = {
       DynamicUser = true;
       ExecStart = ''
-        ${pkgs.prometheus-nginx-exporter}/bin/nginx_exporter \
-          --nginx.scrape_uri '${cfg.scrapeUri}' \
-          --telemetry.address ${cfg.listenAddress}:${toString cfg.port} \
-          --telemetry.endpoint ${cfg.telemetryEndpoint} \
-          --insecure ${toString cfg.insecure} \
+        ${pkgs.prometheus-nginx-exporter}/bin/nginx-prometheus-exporter \
+          --nginx.scrape-uri '${cfg.scrapeUri}' \
+          --nginx.ssl-verify ${toString cfg.sslVerify} \
+          --web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
+          --web.telemetry-path ${cfg.telemetryPath} \
           ${concatStringsSep " \\\n  " cfg.extraFlags}
       '';
     };
   };
+  imports = [
+    (mkRenamedOptionModule [ "telemetryEndpoint" ] [ "telemetryPath" ])
+    (mkRemovedOptionModule [ "insecure" ] ''
+      This option was replaced by 'prometheus.exporters.nginx.sslVerify'.
+    '')
+    ({ options.warnings = options.warnings; })
+  ];
 }
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/node.nix b/nixos/modules/services/monitoring/prometheus/exporters/node.nix
index 8c4128f9b634..2477e69ea267 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/node.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/node.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix b/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
index efe78ebcba86..963fa7592565 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/snmp.nix b/nixos/modules/services/monitoring/prometheus/exporters/snmp.nix
index 0d9194124325..4361c3543ba1 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/snmp.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/snmp.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/surfboard.nix b/nixos/modules/services/monitoring/prometheus/exporters/surfboard.nix
index 715dba06a3dc..197a0a949e0d 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/surfboard.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/surfboard.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/tor.nix b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
index e0ae83802425..4a59e83fc2e8 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/unifi.nix b/nixos/modules/services/monitoring/prometheus/exporters/unifi.nix
index 011dcbe208e4..696c2fe35353 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/unifi.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/unifi.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/varnish.nix b/nixos/modules/services/monitoring/prometheus/exporters/varnish.nix
index aaed76175b84..f38221527b32 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/varnish.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/varnish.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
@@ -68,7 +68,6 @@ in
   serviceOpts = {
     path = [ pkgs.varnish ];
     serviceConfig = {
-      DynamicUser = true;
       RestartSec = mkDefault 1;
       ExecStart = ''
         ${pkgs.prometheus-varnish-exporter}/bin/prometheus_varnish_exporter \
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/wireguard.nix b/nixos/modules/services/monitoring/prometheus/exporters/wireguard.nix
index c5b84e574b8d..5aed4a3a966d 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/wireguard.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/wireguard.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs }:
+{ config, lib, pkgs, options }:
 
 with lib;
 
@@ -23,12 +23,24 @@ in {
         to set the peers up.
       '';
     };
+
+    singleSubnetPerField = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        By default, all allowed IPs and subnets are comma-separated in the
+        <literal>allowed_ips</literal> field. With this option enabled,
+        a single IP and subnet will be listed in fields like <literal>allowed_ip_0</literal>,
+        <literal>allowed_ip_1</literal> and so on.
+      '';
+    };
   };
   serviceOpts = {
     script = ''
       ${pkgs.prometheus-wireguard-exporter}/bin/prometheus_wireguard_exporter \
         -p ${toString cfg.port} \
         ${optionalString cfg.verbose "-v"} \
+        ${optionalString cfg.singleSubnetPerField "-s"} \
         ${optionalString (cfg.wireguardConfig != null) "-n ${cfg.wireguardConfig}"}
     '';
 
diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index 2097b9a31639..06af4dbcca4e 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -33,7 +33,7 @@ let
       ${cfg.extraConfig}
 
       ${ concatMapStrings
-          ({ name, file, master ? true, slaves ? [], masters ? [] }:
+          ({ name, file, master ? true, slaves ? [], masters ? [], extraConfig ? "" }:
             ''
               zone "${name}" {
                 type ${if master then "master" else "slave"};
@@ -52,6 +52,7 @@ let
                    ''
                 }
                 allow-query { any; };
+                ${extraConfig}
               };
             '')
           cfg.zones }
@@ -131,6 +132,7 @@ in
           file = "/var/dns/example.com";
           masters = ["192.168.0.1"];
           slaves = [];
+          extraConfig = "";
         }];
       };
 
diff --git a/nixos/modules/services/networking/thelounge.nix b/nixos/modules/services/networking/thelounge.nix
new file mode 100644
index 000000000000..b1d23372955e
--- /dev/null
+++ b/nixos/modules/services/networking/thelounge.nix
@@ -0,0 +1,75 @@
+{ pkgs, lib, config, ... }:
+
+with lib;
+
+let
+  cfg = config.services.thelounge;
+  dataDir = "/var/lib/thelounge";
+  configJsData = "module.exports = " + builtins.toJSON (
+    { private = cfg.private; port = cfg.port; } // cfg.extraConfig
+  );
+in {
+  options.services.thelounge = {
+    enable = mkEnableOption "The Lounge web IRC client";
+
+    private = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Make your The Lounge instance private. You will need to configure user
+        accounts by using the (<command>thelounge</command>) command or by adding
+        entries in <filename>${dataDir}/users</filename>. You might need to restart
+        The Lounge after making changes to the state directory.
+      '';
+    };
+
+    port = mkOption {
+      type = types.port;
+      default = 9000;
+      description = "TCP port to listen on for http connections.";
+    };
+
+    extraConfig = mkOption {
+      default = {};
+      type = types.attrs;
+      example = literalExample ''{
+        reverseProxy = true;
+        defaults = {
+          name = "Your Network";
+          host = "localhost";
+          port = 6697;
+        };
+      }'';
+      description = ''
+        The Lounge's <filename>config.js</filename> contents as attribute set (will be
+        converted to JSON to generate the configuration file).
+
+        The options defined here will be merged to the default configuration file.
+        Note: In case of duplicate configuration, options from <option>extraConfig</option> have priority.
+
+        Documentation: <link xlink:href="https://thelounge.chat/docs/server/configuration" />
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users.thelounge = {
+      description = "thelounge service user";
+      group = "thelounge";
+    };
+    users.groups.thelounge = {};
+    systemd.services.thelounge = {
+      description = "The Lounge web IRC client";
+      wantedBy = [ "multi-user.target" ];
+      environment = { THELOUNGE_HOME = dataDir; };
+      preStart = "ln -sf ${pkgs.writeText "config.js" configJsData} ${dataDir}/config.js";
+      serviceConfig = {
+        User = "thelounge";
+        StateDirectory = baseNameOf dataDir;
+        ExecStart = "${pkgs.thelounge}/bin/thelounge start";
+      };
+    };
+
+    environment.systemPackages = [ pkgs.thelounge ];
+  };
+}
diff --git a/nixos/modules/services/system/nscd.conf b/nixos/modules/services/system/nscd.conf
index 603a5d01acce..2b7523a7346d 100644
--- a/nixos/modules/services/system/nscd.conf
+++ b/nixos/modules/services/system/nscd.conf
@@ -7,46 +7,28 @@
 # is not aware of the path in which the nss modules live.  As a workaround, we
 # have `enable-cache yes` with an explicit ttl of 0
 server-user             nscd
-threads                 1
-paranoia                no
-debug-level             0
 
 enable-cache            passwd          yes
 positive-time-to-live   passwd          0
 negative-time-to-live   passwd          0
-suggested-size          passwd          211
-check-files             passwd          yes
-persistent              passwd          no
 shared                  passwd          yes
 
 enable-cache            group           yes
 positive-time-to-live   group           0
 negative-time-to-live   group           0
-suggested-size          group           211
-check-files             group           yes
-persistent              group           no
 shared                  group           yes
 
 enable-cache            netgroup        yes
 positive-time-to-live   netgroup        0
 negative-time-to-live   netgroup        0
-suggested-size          netgroup        211
-check-files             netgroup        yes
-persistent              netgroup        no
 shared                  netgroup        yes
 
 enable-cache            hosts           yes
 positive-time-to-live   hosts           600
 negative-time-to-live   hosts           0
-suggested-size          hosts           211
-check-files             hosts           yes
-persistent              hosts           no
 shared                  hosts           yes
 
 enable-cache            services        yes
 positive-time-to-live   services        0
 negative-time-to-live   services        0
-suggested-size          services        211
-check-files             services        yes
-persistent              services        no
 shared                  services        yes
diff --git a/nixos/modules/services/system/nscd.nix b/nixos/modules/services/system/nscd.nix
index fd1570d11980..e11f7e049d8f 100644
--- a/nixos/modules/services/system/nscd.nix
+++ b/nixos/modules/services/system/nscd.nix
@@ -39,11 +39,6 @@ in
   config = mkIf cfg.enable {
     environment.etc."nscd.conf".text = cfg.config;
 
-    users.users.nscd =
-      { isSystemUser = true;
-        description = "Name service cache daemon user";
-      };
-
     systemd.services.nscd =
       { description = "Name Service Cache Daemon";
 
@@ -51,22 +46,23 @@ in
 
         environment = { LD_LIBRARY_PATH = nssModulesPath; };
 
-        preStart =
-          ''
-            mkdir -m 0755 -p /run/nscd
-            rm -f /run/nscd/nscd.pid
-            mkdir -m 0755 -p /var/db/nscd
-          '';
-
         restartTriggers = [
           config.environment.etc.hosts.source
           config.environment.etc."nsswitch.conf".source
           config.environment.etc."nscd.conf".source
         ];
 
+        # We use DynamicUser because in default configurations nscd doesn't
+        # create any files that need to survive restarts. However, in some
+        # configurations, nscd needs to be started as root; it will drop
+        # privileges after all the NSS modules have read their configuration
+        # files. So prefix the ExecStart command with "!" to prevent systemd
+        # from dropping privileges early. See ExecStart in systemd.service(5).
         serviceConfig =
-          { ExecStart = "@${pkgs.glibc.bin}/sbin/nscd nscd";
+          { ExecStart = "!@${pkgs.glibc.bin}/sbin/nscd nscd";
             Type = "forking";
+            DynamicUser = true;
+            RuntimeDirectory = "nscd";
             PIDFile = "/run/nscd/nscd.pid";
             Restart = "always";
             ExecReload =
@@ -75,15 +71,6 @@ in
                 "${pkgs.glibc.bin}/sbin/nscd --invalidate hosts"
               ];
           };
-
-        # Urgggggh... Nscd forks before opening its socket and writing
-        # its pid. So wait until it's ready.
-        postStart =
-          ''
-            while ! ${pkgs.glibc.bin}/sbin/nscd -g > /dev/null; do
-              sleep 0.2
-            done
-          '';
       };
 
   };
diff --git a/nixos/modules/services/web-apps/nextcloud.nix b/nixos/modules/services/web-apps/nextcloud.nix
index fa9a36d11892..7051b73fb57c 100644
--- a/nixos/modules/services/web-apps/nextcloud.nix
+++ b/nixos/modules/services/web-apps/nextcloud.nix
@@ -297,8 +297,23 @@ in {
 
       systemd.services = {
         "nextcloud-setup" = let
+          c = cfg.config;
+          writePhpArrary = a: "[${concatMapStringsSep "," (val: ''"${toString val}"'') a}]";
           overrideConfig = pkgs.writeText "nextcloud-config.php" ''
             <?php
+            ${optionalString (c.dbpassFile != null) ''
+              function nix_read_pwd() {
+                $file = "${c.dbpassFile}";
+                if (!file_exists($file)) {
+                  throw new \RuntimeException(sprintf(
+                    "Cannot start Nextcloud, dbpass file %s set by NixOS doesn't exist!",
+                    $file
+                  ));
+                }
+
+                return trim(file_get_contents($file));
+              }
+            ''}
             $CONFIG = [
               'apps_paths' => [
                 [ 'path' => '${cfg.home}/apps', 'url' => '/apps', 'writable' => false ],
@@ -309,19 +324,27 @@ in {
               ${optionalString cfg.caching.apcu "'memcache.local' => '\\OC\\Memcache\\APCu',"}
               'log_type' => 'syslog',
               'log_level' => '${builtins.toString cfg.logLevel}',
-              ${optionalString (cfg.config.overwriteProtocol != null) "'overwriteprotocol' => '${cfg.config.overwriteProtocol}',"}
+              ${optionalString (c.overwriteProtocol != null) "'overwriteprotocol' => '${c.overwriteProtocol}',"}
+              ${optionalString (c.dbname != null) "'dbname' => '${c.dbname}',"}
+              ${optionalString (c.dbhost != null) "'dbhost' => '${c.dbhost}',"}
+              ${optionalString (c.dbport != null) "'dbport' => '${toString c.dbport}',"}
+              ${optionalString (c.dbuser != null) "'dbuser' => '${c.dbuser}',"}
+              ${optionalString (c.dbtableprefix != null) "'dbtableprefix' => '${toString c.dbtableprefix}',"}
+              ${optionalString (c.dbpass != null) "'dbpassword' => '${c.dbpass}',"}
+              ${optionalString (c.dbpassFile != null) "'dbpassword' => nix_read_pwd(),"}
+              'dbtype' => '${c.dbtype}',
+              'trusted_domains' => ${writePhpArrary c.extraTrustedDomains},
             ];
           '';
           occInstallCmd = let
-            c = cfg.config;
-            adminpass = if c.adminpassFile != null
-              then ''"$(<"${toString c.adminpassFile}")"''
-              else ''"${toString c.adminpass}"'';
             dbpass = if c.dbpassFile != null
               then ''"$(<"${toString c.dbpassFile}")"''
               else if c.dbpass != null
               then ''"${toString c.dbpass}"''
               else null;
+            adminpass = if c.adminpassFile != null
+              then ''"$(<"${toString c.adminpassFile}")"''
+              else ''"${toString c.adminpass}"'';
             installFlags = concatStringsSep " \\\n    "
               (mapAttrsToList (k: v: "${k} ${toString v}") {
               "--database" = ''"${c.dbtype}"'';
diff --git a/nixos/modules/services/web-apps/nextcloud.xml b/nixos/modules/services/web-apps/nextcloud.xml
index d78d866086a6..d66e0f0c2997 100644
--- a/nixos/modules/services/web-apps/nextcloud.xml
+++ b/nixos/modules/services/web-apps/nextcloud.xml
@@ -42,10 +42,12 @@
 
   services.postgresql = {
     <link linkend="opt-services.postgresql.enable">enable</link> = true;
-    <link linkend="opt-services.postgresql.initialScript">initialScript</link> = pkgs.writeText "psql-init" ''
-      CREATE ROLE nextcloud WITH LOGIN;
-      CREATE DATABASE nextcloud WITH OWNER nextcloud;
-    '';
+    <link linkend="opt-services.postgresql.ensureDatabases">ensureDatabases</link> = [ "nextcloud" ];
+    <link linkend="opt-services.postgresql.ensureUsers">ensureUsers</link> = [
+     { name = "nextcloud";
+       ensurePermissions."DATABASE nextcloud" = "ALL PRIVILEGES";
+     }
+    ];
   };
 
   # ensure that postgres is running *before* running the setup
@@ -63,17 +65,22 @@
    are used internally to configure an HTTP server using
    <literal><link xlink:href="https://php-fpm.org/">PHP-FPM</link></literal>
    and <literal>nginx</literal>. The <literal>config</literal> attribute set is
-   used for the <literal>config.php</literal> which is used for the
-   application's configuration. <emphasis>Beware: this isn't entirely pure
-   since the config is modified by the application's runtime!</emphasis>
+   used by the imperative installer and all values are written to an additional file
+   to ensure that changes can be applied by changing the module's options.
   </para>
 
   <para>
-   In case the application serves multiple hosts (those are checked with
+   In case the application serves multiple domains (those are checked with
    <literal><link xlink:href="http://php.net/manual/en/reserved.variables.server.php">$_SERVER['HTTP_HOST']</link></literal>)
-   those can be added using
+   it's needed to add them to
    <literal><link linkend="opt-services.nextcloud.config.extraTrustedDomains">services.nextcloud.config.extraTrustedDomains</link></literal>.
   </para>
+
+  <para>
+   Auto updates for Nextcloud apps can be enabled using
+   <literal><link linkend="opt-services.nextcloud.autoUpdateApps.enable">services.nextcloud.autoUpdateApps</link></literal>.
+</para>
+
  </section>
  <section xml:id="module-services-nextcloud-pitfalls-during-upgrade">
   <title>Pitfalls</title>
@@ -87,35 +94,24 @@
   </para>
 
   <para>
-   Right now changes to the <literal>services.nextcloud.config</literal>
-   attribute set won't take effect after the first install (except
-   <literal><link linkend="opt-services.nextcloud.config.extraTrustedDomains">services.nextcloud.config.extraTrustedDomains</link></literal>)
-   since the actual configuration file is generated by the NextCloud installer
-   which also sets up critical parts such as the database structure.
+   All configuration parameters are also stored in
+   <literal>/var/lib/nextcloud/config/override.config.php</literal> which is generated by
+   the module and linked from the store to ensure that all values from <literal>config.php</literal>
+   can be modified by the module.
+   However <literal>config.php</literal> manages the application's state and shouldn't be touched
+   manually because of that.
   </para>
 
-  <para>
-   <emphasis>Warning: don't delete <literal>config.php</literal>! This file
+  <warning>
+   <para>Don't delete <literal>config.php</literal>! This file
    tracks the application's state and a deletion can cause unwanted
-   side-effects!</emphasis>
-  </para>
+   side-effects!</para>
+  </warning>
 
-  <para>
-   <emphasis>Warning: don't rerun <literal>nextcloud-occ
+  <warning>
+   <para>Don't rerun <literal>nextcloud-occ
    maintenance:install</literal>! This command tries to install the application
-   and can cause unwanted side-effects!</emphasis>
-  </para>
-
-  <para>
-   The issues are known and reported in
-   <link xlink:href="https://github.com/NixOS/nixpkgs/issues/49783">#49783</link>,
-   for now it's unfortunately necessary to manually work around these issues.
-  </para>
-
-  <para>
-   Right now app installation and configuration is done imperatively in the nextcloud web ui or via the <literal>nextcloud-occ</literal> command line utility.
-   You can activate auto updates for your apps via
-   <literal><link linkend="opt-services.nextcloud.autoUpdateApps.enable">services.nextcloud.autoUpdateApps</link></literal>.
-  </para>
+   and can cause unwanted side-effects!</para>
+  </warning>
  </section>
 </chapter>
diff --git a/nixos/modules/services/web-apps/tt-rss.nix b/nixos/modules/services/web-apps/tt-rss.nix
index b882f6c2ae7e..1bd9de93735d 100644
--- a/nixos/modules/services/web-apps/tt-rss.nix
+++ b/nixos/modules/services/web-apps/tt-rss.nix
@@ -16,6 +16,9 @@ let
 
   poolName = "tt-rss";
 
+  mysqlLocal = cfg.database.createLocally && cfg.database.type == "mysql";
+  pgsqlLocal = cfg.database.createLocally && cfg.database.type == "pgsql";
+
   tt-rss-config = pkgs.writeText "config.php" ''
     <?php
 
@@ -200,6 +203,12 @@ let
             and 3306 for pgsql and mysql respectively).
           '';
         };
+
+        createLocally = mkOption {
+          type = types.bool;
+          default = true;
+          description = "Create the database and database user locally.";
+        };
       };
 
       auth = {
@@ -551,9 +560,13 @@ let
       };
     };
 
-    systemd.services.tt-rss = let
-      dbService = if cfg.database.type == "pgsql" then "postgresql.service" else "mysql.service";
-    in {
+    systemd.tmpfiles.rules = [
+      "d '${cfg.root}' 0755 ${cfg.user} tt_rss - -"
+      "Z '${cfg.root}' 0755 ${cfg.user} tt_rss - -"
+    ];
+
+    systemd.services.tt-rss =
+      {
 
         description = "Tiny Tiny RSS feeds update daemon";
 
@@ -562,14 +575,14 @@ let
               if cfg.database.type == "pgsql" then ''
                   ${optionalString (cfg.database.password != null) "PGPASSWORD=${cfg.database.password}"} \
                   ${optionalString (cfg.database.passwordFile != null) "PGPASSWORD=$(cat ${cfg.database.passwordFile})"} \
-                  ${pkgs.sudo}/bin/sudo -u ${cfg.user} ${config.services.postgresql.package}/bin/psql \
+                  ${config.services.postgresql.package}/bin/psql \
                     -U ${cfg.database.user} \
                     ${optionalString (cfg.database.host != null) "-h ${cfg.database.host} --port ${toString dbPort}"} \
                     -c '${e}' \
                     ${cfg.database.name}''
 
               else if cfg.database.type == "mysql" then ''
-                  echo '${e}' | ${pkgs.sudo}/bin/sudo -u ${cfg.user} ${config.services.mysql.package}/bin/mysql \
+                  echo '${e}' | ${config.services.mysql.package}/bin/mysql \
                     -u ${cfg.database.user} \
                     ${optionalString (cfg.database.password != null) "-p${cfg.database.password}"} \
                     ${optionalString (cfg.database.host != null) "-h ${cfg.database.host} -P ${toString dbPort}"} \
@@ -579,7 +592,6 @@ let
 
         in ''
           rm -rf "${cfg.root}/*"
-          mkdir -m 755 -p "${cfg.root}"
           cp -r "${pkgs.tt-rss}/"* "${cfg.root}"
           ${optionalString (cfg.pluginPackages != []) ''
             for plugin in ${concatStringsSep " " cfg.pluginPackages}; do
@@ -592,19 +604,10 @@ let
             done
           ''}
           ln -sf "${tt-rss-config}" "${cfg.root}/config.php"
-          chown -R "${cfg.user}" "${cfg.root}"
           chmod -R 755 "${cfg.root}"
         ''
 
         + (optionalString (cfg.database.type == "pgsql") ''
-          ${optionalString (cfg.database.host == null && cfg.database.password == null) ''
-            if ! [ -e ${cfg.root}/.db-created ]; then
-              ${pkgs.sudo}/bin/sudo -u ${config.services.postgresql.superUser} ${config.services.postgresql.package}/bin/createuser ${cfg.database.user}
-              ${pkgs.sudo}/bin/sudo -u ${config.services.postgresql.superUser} ${config.services.postgresql.package}/bin/createdb -O ${cfg.database.user} ${cfg.database.name}
-              touch ${cfg.root}/.db-created
-            fi
-          ''}
-
           exists=$(${callSql "select count(*) > 0 from pg_tables where tableowner = user"} \
           | tail -n+3 | head -n-2 | sed -e 's/[ \n\t]*//')
 
@@ -628,18 +631,18 @@ let
 
         serviceConfig = {
           User = "${cfg.user}";
+          Group = "tt_rss";
           ExecStart = "${pkgs.php}/bin/php ${cfg.root}/update.php --daemon";
           StandardOutput = "syslog";
           StandardError = "syslog";
-          PermissionsStartOnly = true;
         };
 
         wantedBy = [ "multi-user.target" ];
-        requires = ["${dbService}"];
-        after = ["network.target" "${dbService}"];
+        requires = optional mysqlLocal "mysql.service" ++ optional pgsqlLocal "postgresql.service";
+        after = [ "network.target" ] ++ optional mysqlLocal "mysql.service" ++ optional pgsqlLocal "postgresql.service";
     };
 
-    services.mysql = optionalAttrs (cfg.database.type == "mysql") {
+    services.mysql = mkIf mysqlLocal {
       enable = true;
       package = mkDefault pkgs.mysql;
       ensureDatabases = [ cfg.database.name ];
@@ -653,17 +656,22 @@ let
       ];
     };
 
-    services.postgresql = optionalAttrs (cfg.database.type == "pgsql") {
+    services.postgresql = mkIf pgsqlLocal {
       enable = mkDefault true;
+      ensureDatabases = [ cfg.database.name ];
+      ensureUsers = [
+        { name = cfg.user;
+          ensurePermissions = { "DATABASE ${cfg.database.name}" = "ALL PRIVILEGES"; };
+        }
+      ];
     };
 
-    users = optionalAttrs (cfg.user == "tt_rss") {
-      users.tt_rss = {
-        description = "tt-rss service user";
-        isSystemUser = true;
-        group = "tt_rss";
-      };
-      groups.tt_rss = {};
+    users.users.tt_rss = optionalAttrs (cfg.user == "tt_rss") {
+      description = "tt-rss service user";
+      isSystemUser = true;
+      group = "tt_rss";
     };
+
+    users.groups.tt_rss = {};
   };
 }
diff --git a/nixos/modules/services/web-servers/apache-httpd/tomcat-connector.nix b/nixos/modules/services/web-servers/apache-httpd/tomcat-connector.nix
deleted file mode 100644
index a883bb2b3433..000000000000
--- a/nixos/modules/services/web-servers/apache-httpd/tomcat-connector.nix
+++ /dev/null
@@ -1,103 +0,0 @@
-{ config, pkgs, serverInfo, lib, ... }:
-
-let
-  extraWorkersProperties = lib.optionalString (config ? extraWorkersProperties) config.extraWorkersProperties;
-  
-  workersProperties = pkgs.writeText "workers.properties" ''
-# Define list of workers that will be used
-# for mapping requests
-# The configuration directives are valid
-# for the mod_jk version 1.2.18 and later
-#
-worker.list=loadbalancer,status
-
-# Define Node1
-# modify the host as your host IP or DNS name.
-worker.node1.port=8009
-worker.node1.host=localhost
-worker.node1.type=ajp13
-worker.node1.lbfactor=1
-
-# Load-balancing behaviour
-worker.loadbalancer.type=lb
-worker.loadbalancer.balance_workers=node1
-
-# Status worker for managing load balancer
-worker.status.type=status
-
-${extraWorkersProperties}
-  '';
-in
-{
-
-  options = {
-    extraWorkersProperties = lib.mkOption {
-      default = "";
-      description = "Additional configuration for the workers.properties file.";
-    };
-  };
-
-  extraModules = [
-    { name = "jk"; path = "${pkgs.tomcat_connectors}/modules/mod_jk.so"; }
-  ];
-
-  extraConfig = ''
-# Where to find workers.properties
-JkWorkersFile ${workersProperties}
-
-# Where to put jk logs
-JkLogFile ${serverInfo.serverConfig.logDir}/mod_jk.log
-
-# Set the jk log level [debug/error/info]
-JkLogLevel info
-
-# Select the log format
-JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
-
-# JkOptions indicates to send SSK KEY SIZE
-# Note: Changed from +ForwardURICompat.
-# See http://tomcat.apache.org/security-jk.html
-JkOptions +ForwardKeySize +ForwardURICompatUnparsed -ForwardDirectories
-
-# JkRequestLogFormat
-JkRequestLogFormat "%w %V %T"
-
-# Mount your applications
-JkMount /__application__/* loadbalancer
-
-# You can use external file for mount points.
-# It will be checked for updates each 60 seconds.
-# The format of the file is: /url=worker
-# /examples/*=loadbalancer
-#JkMountFile uriworkermap.properties
-
-# Add shared memory.
-# This directive is present with 1.2.10 and
-# later versions of mod_jk, and is needed for
-# for load balancing to work properly
-# Note: Replaced JkShmFile logs/jk.shm due to SELinux issues. Refer to
-# https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=225452
-JkShmFile ${serverInfo.serverConfig.stateDir}/jk.shm
-
-# Static files in all Tomcat webapp context directories are served by apache
-JkAutoAlias /var/tomcat/webapps
-
-# All requests go to worker by default
-JkMount /* loadbalancer
-# Serve some static files using httpd
-#JkUnMount /*.html loadbalancer
-#JkUnMount /*.jpg  loadbalancer
-#JkUnMount /*.gif  loadbalancer
-#JkUnMount /*.css  loadbalancer
-#JkUnMount /*.png  loadbalancer
-#JkUnMount /*.js  loadbalancer
-
-# Add jkstatus for managing runtime data
-<Location /jkstatus/>
-JkMount status
-Order deny,allow
-Deny from all
-Allow from 127.0.0.1
-</Location>
-  '';
-}
diff --git a/nixos/modules/services/x11/desktop-managers/pantheon.nix b/nixos/modules/services/x11/desktop-managers/pantheon.nix
index c0eae1eb8d44..41903b33fae9 100644
--- a/nixos/modules/services/x11/desktop-managers/pantheon.nix
+++ b/nixos/modules/services/x11/desktop-managers/pantheon.nix
@@ -145,8 +145,6 @@ in
       isSystem = true;
     };
 
-    xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
-
     networking.networkmanager.enable = mkDefault true;
     networking.networkmanager.basePackages =
       { inherit (pkgs) networkmanager modemmanager wpa_supplicant;
diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index 14304e00dae4..98c9ae86cee4 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -21,6 +21,13 @@ in
         description = "Enable the Plasma 5 (KDE 5) desktop environment.";
       };
 
+      phononBackend = mkOption {
+        type = types.enum [ "gstreamer" "vlc" ];
+        default = "gstreamer";
+        example = "vlc";
+        description = "Phonon audio backend to install.";
+      };
+
       enableQt4Support = mkOption {
         type = types.bool;
         default = true;
@@ -161,12 +168,14 @@ in
 
           qtvirtualkeyboard
 
-          libsForQt5.phonon-backend-gstreamer
-
           xdg-user-dirs # Update user dirs as described in https://freedesktop.org/wiki/Software/xdg-user-dirs/
         ]
-
-        ++ lib.optionals cfg.enableQt4Support [ pkgs.phonon-backend-gstreamer ]
+        
+        # Phonon audio backend
+        ++ lib.optional (cfg.phononBackend == "gstreamer") libsForQt5.phonon-backend-gstreamer
+        ++ lib.optional (cfg.phononBackend == "gstreamer" && cfg.enableQt4Support) pkgs.phonon-backend-gstreamer
+        ++ lib.optional (cfg.phononBackend == "vlc") libsForQt5.phonon-backend-vlc
+        ++ lib.optional (cfg.phononBackend == "vlc" && cfg.enableQt4Support) pkgs.phonon-backend-vlc
 
         # Optional hardware support features
         ++ lib.optional config.hardware.bluetooth.enable bluedevil