[nvidia] Add role

roles/default.nix

@@ -10,6 +10,7 @@ with lib;
     ./desktop
     ./kodi
     ./nfs-mounts
+    ./nvidia
     ./printing
     ./spotifyd
     ./users

roles/nvidia/default.nix

@@ -0,0 +1,20 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.nvidia;
+in
+{
+  options.roles.nvidia = {
+    enable = mkEnableOption "Enable the nvidia role";
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      libva-utils
+      nvidia-vaapi-driver
+      nvtopPackages.nvidia
+    ];
+  };
+}