install nvidia drivers for sparky

hosts/sparky/default.nix

@@ -45,20 +45,43 @@ in
     enableIPv6 = false;
   };
 
+  nixpkgs.config.allowUnfreePredicate = pkg:
+    builtins.elem (lib.getName pkg) [
+      # Add additional package names here
+      "nvidia-x11"
+      "nvidia-settings"
+      "nvidia-persistenced"
+    ];
+
   services.displayManager.defaultSession = "cinnamon";
   services.libinput.enable = true;
 
   services.xserver = {
     enable = true;
-    videoDrivers = [ "modesetting" ];
+    videoDrivers = [ "nvidia" ];
     displayManager.lightdm.enable = true;
     exportConfiguration = true;
     deviceSection = ''
-    Option "DRI" "2"
-    Option "TearFree" "true"
     '';
     desktopManager = {
       cinnamon.enable = true;
       };
   };
+
+  # Enable OpenGL
+  hardware.opengl = {
+    enable = true;
+    driSupport = true;
+    driSupport32Bit = true;
+  };
+
+  # Load nvidia driver
+  hardware.nvidia = {
+    # https://nixos.wiki/wiki/Nvidia
+    modesetting.enable = true;
+    powerManagement.enable = false;
+    open = false;
+    nvidiaSettings = true;
+    package = config.boot.kernelPackages.nvidiaPackages.stable;
+  };
 }