{ config, lib, pkgs, ... }:
{
  # GPU
/*
hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };
*/
  services.xserver.videoDrivers = ["nvidia"];
  #pkgs.autoAddDriverRunpath
  hardware.nvidia = {
    modesetting.enable = true;
    # Enable power management (do not disable this unless you have a reason to).
    # Likely to cause problems on laptops and with screen tearing if disabled.
    powerManagement.enable = true;
    # Do not disable this unless your GPU is unsupported or if you have a good reason to.
    open = true;
    # Enable the Nvidia settings menu,
    # accessible via `nvidia-settings`.
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
   };

   environment.systemPackages = with pkgs; [
    #nvtop-nvidia
    nvtopPackages.nvidia
   ];
  
  
}