nixos/lxqt: add a module for the lxqt portal

nixos/modules/config/xdg/portals/lxqt.nix

@@ -0,0 +1,49 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  cfg = config.xdg.portal.lxqt;
+
+in
+{
+  meta = {
+    maintainers = teams.lxqt.members;
+  };
+
+  options.xdg.portal.lxqt = {
+    enable = mkEnableOption ''
+      the desktop portal for the LXQt desktop environment.
+
+      This will add the <package>lxqt.xdg-desktop-portal-lxqt</package>
+      package (with the extra Qt styles) into the
+      <option>xdg.portal.extraPortals</option> option
+    '';
+
+    styles = mkOption {
+      type = types.listOf types.package;
+      default = [];
+      example = literalExpression ''[
+        pkgs.libsForQt5.qtstyleplugin-kvantum
+        pkgs.breeze-qt5
+        pkgs.qtcurve
+      ];
+      '';
+      description = ''
+        Extra Qt styles that will be available to the
+        <package>lxqt.xdg-desktop-portal-lxqt</package>.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    xdg.portal = {
+      enable = true;
+      extraPortals = [
+        (pkgs.lxqt.xdg-desktop-portal-lxqt.override { extraQtStyles = cfg.styles; })
+      ];
+    };
+
+    environment.systemPackages = cfg.styles;
+  };
+}

nixos/modules/module-list.nix

@@ -10,6 +10,7 @@
   ./config/xdg/mime.nix
   ./config/xdg/portal.nix
   ./config/xdg/portals/wlr.nix
+  ./config/xdg/portals/lxqt.nix
   ./config/appstream.nix
   ./config/console.nix
   ./config/xdg/sounds.nix

nixos/modules/services/x11/desktop-managers/lxqt.nix

@@ -69,8 +69,7 @@ in
 
     services.xserver.libinput.enable = mkDefault true;
 
-    xdg.portal.enable = true;
-    xdg.portal.extraPortals = [ pkgs.lxqt.xdg-desktop-portal-lxqt ];
+    xdg.portal.lxqt.enable = true;
   };
 
 }