add gaming

modules/desktop/gaming/lutris/default.nix

@@ -0,0 +1,18 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.gaming.lutris;
+in {
+  options.gaming.lutris = {
+    enable = lib.mkEnableOption "enable lutris";
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      lutris
+    ];
+  };
+}