always run steam in gamescope

clients/quadraticpc/gamescope.nix

@@ -0,0 +1,7 @@
+{
+  programs.gamescope.args = [
+    "-W 2560"
+    "-H 1440"
+    "-r 165"
+  ];
+}

clients/quadtop/gamescope.nix

@@ -0,0 +1,7 @@
+{
+  programs.gamescope.args = [
+    "-W 1920"
+    "-H 1080"
+    "-r 120"
+  ];
+}

modules/desktop/gamescope.nix

@@ -1,13 +1,3 @@
 {
-  programs = {
-    steam.gamescopeSession.enable = true;
-    gamescope = {
-      enable = true;
-      args = [
-        "-W 2560"
-        "-H 1440"
-        "-r 165"
-      ];
-    };
-  };
+  programs.gamescope.enable = true;
 }

modules/desktop/steam.nix

@@ -1,7 +1,24 @@
-{ pkgs, ... }:
+{ pkgs, lib, ... }:
 {
   programs.steam = {
     enable = true;
     extraCompatPackages = [ pkgs.proton-ge-bin ];
+    gamescopeSession.enable = true;
   };
+
+  environment.systemPackages = [
+    (lib.hiPrio (
+      pkgs.makeDesktopItem {
+        name = "steam";
+        desktopName = "Steam";
+        exec = "steam-gamescope";
+        icon = "steam";
+        categories = [
+          "Network"
+          "FileTransfer"
+          "Game"
+        ];
+      }
+    ))
+  ];
 }