initial setup

root/gaming/desktop/lact/default.nix

@@ -0,0 +1,24 @@
+# Use LACT for GPU overclocking
+{ pkgs,... }:
+{
+  environment.systemPackages =
+   (with pkgs; [
+    lact
+    ]);
+
+  # Enable Modprobe
+  boot.extraModprobeConfig = ''
+    options amdgpu ppfeaturemask=0xFFF7FFFF
+ '';
+
+  # Enable Systemd Service
+  systemd.services.lact = {
+    enable = true;
+    description = "AMDGPU Control Daemon";
+    after = ["multi-user.target"];
+    wantedBy = ["multi-user.target"];
+    serviceConfig = {
+      ExecStart = "${pkgs.lact}/bin/lact daemon";
+    };
+  };
+}

root/gaming/desktop/steam/default.nix

@@ -0,0 +1,48 @@
+{ pkgs, ... }:
+# Scripts for SteamOS session
+let
+  jupiter-biosupdate = pkgs.writeShellScriptBin "jupiter-biosupdate" ''
+    exit 0;
+  '';
+
+  steamos-update = pkgs.writeShellScriptBin "steamos-update" ''
+    exit 7;
+  '';
+
+  steamos-select-branch = pkgs.writeShellScriptBin "steamos-select-branch" ''
+    echo "Not applicable for this OS"
+  '';
+
+  steamos-session-select = pkgs.writeShellScriptBin "steamos-session-select" ''
+    steam -shutdown
+  '';
+in
+{
+  environment.systemPackages = [
+    jupiter-biosupdate
+    steamos-update
+    steamos-select-branch
+    steamos-session-select
+  ];
+  hardware.steam-hardware.enable = true;
+  programs.steam = {
+    enable = true;
+    extest.enable = true;
+    gamescopeSession.enable = true;
+    gamescopeSession.args = [
+      "--mangoapp"
+    ];
+    gamescopeSession.steamArgs = [
+      "-steamdeck"
+      "-steamos3"
+    ];
+    extraCompatPackages = with pkgs; [
+      proton-ge-bin
+    ];
+    extraPackages = with pkgs; [
+      gamescope
+      mangohud
+      vulkan-hdr-layer-kwin6
+    ];
+  };
+}