nixos-config/modules/common/hardware.nix

{
  lib,
  config,
  pkgs,
  machineProps,
  ...
}:
let
  gpu = config.my.hardware.gpu;
  anyWineUser =
    if machineProps.enableHomeManager then
      (builtins.any (user: user.my.games.wine.enable) (builtins.attrValues config.home-manager.users))
    else
      false;
in
with lib;
{
  options.my.hardware.gpu = mkOption {
    type = types.nullOr (
      types.enum [
        "nvidia"
        "intel"
        "amd"
      ]
    );
    default = null;
    example = "nvidia";
    description = ''
      The GPU type.
    '';
  };

  config = {
    boot.kernelParams = mkIf (gpu == "intel") [ "i915.enable_guc=2" ];
    services.xserver.videoDrivers = mkIf (gpu == "nvidia") [ "nvidia" ];

    hardware.graphics = {
      enable = gpu != null;

      enable32Bit = anyWineUser;

      extraPackages = with pkgs; [
        (mkIf (gpu == "intel") intel-media-driver)
        (mkIf (gpu == "intel") intel-compute-runtime)
      ];
    };

    hardware.nvidia = mkIf (gpu == "nvidia") {
      open = true;

      package = config.boot.kernelPackages.nvidiaPackages.beta;
    };

  };
}