nixos/thelounge: add plugins option

nixos/doc/manual/from_md/release-notes/rl-2205.section.xml

@@ -334,6 +334,15 @@
           <literal>true</literal>.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          The option <literal>services.thelounge.plugins</literal> has
+          been added to allow installing plugins for The Lounge. Plugins
+          can be found in
+          <literal>pkgs.theLoungePlugins.plugins</literal> and
+          <literal>pkgs.theLoungePlugins.themes</literal>.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
 </section>

nixos/doc/manual/release-notes/rl-2205.section.md

@@ -124,3 +124,5 @@ In addition to numerous new and upgraded packages, this release has the followin
 - `fetchFromSourcehut` now allows fetching repositories recursively
   using `fetchgit` or `fetchhg` if the argument `fetchSubmodules`
   is set to `true`.
+
+- The option `services.thelounge.plugins` has been added to allow installing plugins for The Lounge. Plugins can be found in `pkgs.theLoungePlugins.plugins` and `pkgs.theLoungePlugins.themes`.

nixos/modules/services/networking/thelounge.nix

@@ -8,7 +8,18 @@ let
   configJsData = "module.exports = " + builtins.toJSON (
     { private = cfg.private; port = cfg.port; } // cfg.extraConfig
   );
-in {
+  pluginManifest = {
+    dependencies = builtins.listToAttrs (builtins.map (pkg: { name = getName pkg; value = getVersion pkg; }) cfg.plugins);
+  };
+  plugins = pkgs.runCommandLocal "thelounge-plugins" { } ''
+    mkdir -p $out/node_modules
+    echo ${escapeShellArg (builtins.toJSON pluginManifest)} >> $out/package.json
+    ${concatMapStringsSep "\n" (pkg: ''
+    ln -s ${pkg}/lib/node_modules/${getName pkg} $out/node_modules/${getName pkg}
+    '') cfg.plugins}
+  '';
+in
+{
   options.services.thelounge = {
     enable = mkEnableOption "The Lounge web IRC client";
 
@@ -30,7 +41,7 @@ in {
     };
 
     extraConfig = mkOption {
-      default = {};
+      default = { };
       type = types.attrs;
       example = literalExpression ''{
         reverseProxy = true;
@@ -50,19 +61,30 @@ in {
         Documentation: <link xlink:href="https://thelounge.chat/docs/server/configuration" />
       '';
     };
+
+    plugins = mkOption {
+      default = [ ];
+      type = types.listOf types.package;
+      example = literalExpression "[ pkgs.theLoungePlugins.themes.solarized ]";
+      description = ''
+        The Lounge plugins to install. Plugins can be found in
+        <literal>pkgs.theLoungePlugins.plugins</literal> and <literal>pkgs.theLoungePlugins.themes</literal>.
+      '';
+    };
   };
 
   config = mkIf cfg.enable {
     users.users.thelounge = {
-      description = "thelounge service user";
+      description = "The Lounge service user";
       group = "thelounge";
       isSystemUser = true;
     };
-    users.groups.thelounge = {};
+    users.groups.thelounge = { };
     systemd.services.thelounge = {
       description = "The Lounge web IRC client";
       wantedBy = [ "multi-user.target" ];
       preStart = "ln -sf ${pkgs.writeText "config.js" configJsData} ${dataDir}/config.js";
+      environment.THELOUNGE_PACKAGES = mkIf (cfg.plugins != [ ]) "${plugins}";
       serviceConfig = {
         User = "thelounge";
         StateDirectory = baseNameOf dataDir;

pkgs/development/node-packages/default.nix

@@ -440,6 +440,7 @@ let
       buildInputs = [ self.node-pre-gyp ];
       postInstall = ''
         echo /var/lib/thelounge > $out/lib/node_modules/thelounge/.thelounge_home
+        patch -d $out/lib/node_modules/thelounge -p1 < ${./thelounge-packages-path.patch}
       '';
     };
 

pkgs/development/node-packages/thelounge-packages-path.patch

@@ -0,0 +1,15 @@
+diff --git a/src/helper.js b/src/helper.js
+index 27352b53..7078e4c5 100644
+--- a/src/helper.js
++++ b/src/helper.js
+@@ -110,6 +110,10 @@ function setHome(newPath) {
+ 	userLogsPath = path.join(homePath, "logs");
+ 	clientCertificatesPath = path.join(homePath, "certificates");
+ 
++	if (process.env.THELOUNGE_PACKAGES !== undefined) {
++		packagesPath = process.env.THELOUNGE_PACKAGES;
++	}
++
+ 	// Reload config from new home location
+ 	if (fs.existsSync(configPath)) {
+ 		const userConfig = require(configPath);

pkgs/top-level/all-packages.nix

@@ -10178,6 +10178,16 @@ with pkgs;
 
   inherit (nodePackages) thelounge;
 
+  theLoungePlugins = with lib; let
+    pkgs = filterAttrs (name: _: hasPrefix "thelounge-" name) nodePackages;
+    getPackagesWithPrefix = prefix: mapAttrs' (name: pkg: nameValuePair (removePrefix ("thelounge-" + prefix + "-") name) pkg)
+      (filterAttrs (name: _: hasPrefix ("thelounge-" + prefix + "-") name) pkgs);
+  in
+  {
+    plugins = getPackagesWithPrefix "plugin";
+    themes = getPackagesWithPrefix "theme";
+  };
+
   thefuck = python3Packages.callPackage ../tools/misc/thefuck { };
 
   thicket = callPackage ../applications/version-management/git-and-tools/thicket { };