Setup kde wayland gamescope + nvidia settings

roles/desktop/default.nix

@@ -7,6 +7,7 @@ let
 
   basePackages = with pkgs; [
     brightnessctl
+    mangohud # Should probably get refactored with steam/gamescope out to a gaming role
   ];
 
   x11BasePackages = with pkgs; [
@@ -71,10 +72,38 @@ in
 
       programs.kdeconnect.enable = true;
       programs.java.enable = true;
+      programs.gamemode = {
+        enable = true;
+
+      };
+      programs.gamescope = {
+        enable = true;
+        #capSysNice = true;
+        args = [
+          #"--adaptive-sync"
+          #"--nested-refresh 165"
+          #"--backend wayland"
+          "--hdr-enabled"
+          "--hdr-itm-enable"
+          "--hdr-debug-force-output"
+          "--mangoapp"
+          "--rt"
+          "--steam"
+          #"--xwayland-count 2"
+        ];
+        env = {
+          #PROTON_DISABLE_NVAPI = "1";
+          MANGOHUD = "1";
+          #MANGOHUD_CONFIG = "cpu_temp gpu_temp ram vram";
+        };
+      };
       programs.steam = {
         enable = true;
         remotePlay.openFirewall = true;
         localNetworkGameTransfers.openFirewall = true;
+        gamescopeSession = {
+          enable = true;
+        };
         #package = pkgs.steam.override {
         #withJava = true;
         #withPrimus = true;