profile/gaming: add gamescope

machines/playman/profiles.nix

@@ -3,7 +3,10 @@ _: {
   my.profiles = {
     clean.enable = true;
     development.enable = true;
-    gaming.enable = true;
+    gaming = {
+      enable = true;
+      gamescope.enable = true;
+    };
     nix.enable = true;
     sync.enable = true;
     update.enable = true;

profiles/gaming/default.nix

@@ -10,14 +10,27 @@ in
 {
   options.my.profiles.gaming = with lib; {
     enable = mkEnableOption "gaming profile";
+
+    gamescope = {
+      enable = mkEnableOption "gamescope profile";
+      username = mkOption {
+        type = types.str;
+        default = "felix";
+        description = "Username for gamescope autologin";
+      };
+    };
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf cfg.enable (
+
+    lib.mkMerge [
+      {
         environment.systemPackages = with pkgs; [
           blobby
           discord
           gamemode
           luanti
+          mangohud
           moonlight-qt # steam-link stream
           openttd
           prismlauncher # replace minecraft
@@ -31,6 +44,7 @@ in
 
         programs.steam = {
           enable = true;
+          # remotePlay.openFirewall = cfg.gamescope.enable;
           # fix gamemode: https://github.com/NixOS/nixpkgs/issues/389142
           package = pkgs.steam.override {
             extraPkgs =
@@ -44,6 +58,35 @@ in
           graphics.enable32Bit = true;
           graphics.extraPackages32 = with pkgs.pkgsi686Linux; [ libva ];
         };
+
         services.pulseaudio.support32Bit = true;
-  };
+      }
+
+      (lib.mkIf cfg.gamescope.enable {
+        programs = {
+          gamescope = {
+            enable = true;
+            capSysNice = true;
+          };
+          steam.gamescopeSession.enable = true;
+        };
+
+        services = {
+          xserver.enable = false;
+
+          getty.autologinUser = cfg.gamescope.username;
+
+          greetd = {
+            enable = true;
+            settings = {
+              default_session = {
+                command = "${lib.getExe pkgs.gamescope} -W 1920 -H 1080 -f -e --xwayland-count 2 --hdr-enabled --hdr-itm-enabled -- ${lib.getExe config.programs.steam.package} -pipewire-dmabuf -gamepadui -steamos3 > /dev/null 2>&1";
+                user = cfg.gamescope.username;
+              };
+            };
+          };
+        };
+      })
+    ]
+  );
 }