added steam home

packages/steam/default.nix

@@ -3,6 +3,9 @@
   myConfig,
   ...
 }: {
+  environment.systemPackages = with pkgs; [
+    steam-run
+  ];
   programs.steam = {
     enable = true;
     gamescopeSession.enable = true;

packages/steam/home.nix

@@ -0,0 +1,35 @@
+{pkgs, ...}: {
+  xdg.desktopEntries = {
+    steam = {
+      # The key 'steam' will result in the file 'steam.desktop'
+      name = "Steam";
+      genericName = "Game Platform";
+      comment = "Play and discuss games.";
+      exec = "${pkgs.mangohud}/bin/mangohud ${pkgs.steam}/bin/steam %U"; # The standard command to launch Steam
+      terminal = false;
+      icon = "steam"; # Assumes the 'steam' icon is available in your icon theme
+      type = "Application";
+      categories = ["Game" "Network"];
+      mimeType = [
+        "x-scheme-handler/steam" # For handling steam:// links
+      ];
+      # If you want to add actions (like launching in Big Picture mode)
+      actions = {
+        BigPicture = {
+          name = "Big Picture Mode";
+          exec = "${pkgs.mangohud}/bin/mangohud ${pkgs.steam}/bin/steam steam://open/bigpicture";
+        };
+        Store = {
+          name = "Store";
+          exec = "${pkgs.mangohud}/bin/mangohud ${pkgs.steam}/bin/steam steam://store";
+        };
+        Library = {
+          name = "Library";
+          exec = "${pkgs.mangohud}/bin/mangohud ${pkgs.steam}/bin/steam steam://library";
+        };
+      };
+      # You might also want StartupWMClass if Steam has a specific window class name
+      # StartupWMClass = "Steam";
+    };
+  };
+}