added gaming scopes

home/desktop.nix

@@ -1,8 +1,16 @@
-{myConfig, ...}: {
+{
-  imports = [
+  myConfig,
-    ../modules/terminal.nix
+  lib,
-    ../modules/desktop.nix
+  ...
-  ];
+}: {
+  imports =
+    [
+      ../modules/terminal.nix
+      ../modules/desktop.nix
+    ]
+    ++ lib.optionals (myConfig.linux.gaming == true) [
+      ../modules/gaming.nix
+    ];
 
   programs.home-manager.enable = true;
 

modules/gaming.nix

@@ -0,0 +1,72 @@
+# In your ~/.config/home-manager/home.nix (or a file imported by it)
+{
+  config,
+  pkgs,
+  ...
+}:
+# Home Manager modules usually get config and pkgs as arguments
+let
+  # Define the custom Steam launcher script within Home Manager's scope.
+  # pkgs here refers to the pkgs available to your Home Manager environment.
+  steamGamescopeWrapper = pkgs.writeScriptBin "steam-gamescope-launcher" ''
+    #!/usr/bin/env bash
+    set -xeuo pipefail
+
+    gamescopeArgs=(
+        --adaptive-sync
+        --hdr-enabled
+        --mangoapp
+        --rt
+        --steam
+    )
+    steamArgs=(
+        -pipewire-dmabuf
+        -tenfoot
+    )
+    mangoConfig=(
+        cpu_temp
+        gpu_temp
+        ram
+        vram
+    )
+    mangoVars=(
+        MANGOHUD=1
+        MANGOHUD_CONFIG="$(IFS=,; echo "$${mangoConfig[*]}")"
+    )
+
+    export PATH="${pkgs.gamescope}/bin:${pkgs.mangohud}/bin:$PATH"
+
+    export "$${mangoVars[@]}"
+    exec ${pkgs.gamescope}/bin/gamescope "$${gamescopeArgs[@]}" -- ${pkgs.steam}/bin/steam "$${steamArgs[@]}"
+  '';
+in {
+  # You don't need 'programs.xdg.enable = true;' explicitly here in Home Manager;
+  # xdg.desktopEntries will be available directly once Home Manager is active.
+
+  # Home Manager usually manages user-level packages under `home.packages`.
+  home.packages = with pkgs; [
+    protonup-qt
+    mangohud
+    goverlay
+    steamGamescopeWrapper # Add your wrapper script to your user's PATH
+  ];
+
+  # Define the desktop entry within Home Manager's xdg.desktopEntries
+  xdg.desktopEntries.steam = {
+    name = "Steam (Gamescope)";
+    comment = "Launch Steam via Gamescope with MangoHud";
+    exec = "${steamGamescopeWrapper}";
+    icon = "steam";
+    terminal = false;
+    type = "Application";
+    categories = ["Game" "Application"];
+    startupNotify = true;
+  };
+
+  # If you previously had services.getty.autologinUser, that remains in configuration.nix.
+  # Likewise for hardware.xone.enable and boot.kernelPackages.
+
+  # Note: programs.steam.enable, programs.gamescope.enable, hardware.xone.enable
+  # usually remain in configuration.nix (system-wide), as they install the programs
+  # and drivers for the whole system.
+}