nichts/modules/system/hardware/graphics.mod.nix

{
  config,
  lib,
  ...
}:
let
  inherit (lib.modules) mkIf;
  inherit (lib.options) mkEnableOption;

  cfg = config.modules.system.hardware;
in
{
  options.modules.system.hardware = {
    nvidia = {
      enable = mkEnableOption "Nvidia graphics drivers";
    };
    amd.enable = mkEnableOption "AMD graphics drivers";
  };
  config = {
    hardware = {
      graphics.enable = true;
      nvidia = mkIf cfg.nvidia.enable {
        # we want the open-source drivers
        open = true;

        modesetting.enable = true;
        nvidiaSettings = false;

        # fixes sleep on nvidia devices
        powerManagement = {
          enable = true;
          finegrained = false;
        };
        package = config.boot.kernelPackages.nvidiaPackages.beta;
      };
    };
    services.xserver.videoDrivers = mkIf cfg.nvidia.enable [ "nvidia" ];
  };
}