Move shared nvidia settings to a separate module

m/module/nvidia.nix

@@ -1,14 +1,9 @@
 { lib, config, ... }:
 {
   # Configure Nvidia driver to use with CUDA
-  hardware.nvidia.package = lib.mkDefault config.boot.kernelPackages.nvidiaPackages.production;
+  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.production;
   hardware.nvidia.open = lib.mkDefault (builtins.abort "hardware.nvidia.open not set");
   hardware.graphics.enable = true;
   nixpkgs.config.nvidia.acceptLicense = true;
   services.xserver.videoDrivers = [ "nvidia" ];
-
-  # enable support for derivations which require nvidia-gpu to be available
-  # > requiredSystemFeatures = [ "cuda" ];
-  programs.nix-required-mounts.enable = true;
-  programs.nix-required-mounts.presets.nvidia-gpu.enable = true;
 }