nixos-hardware/common/gpu/intel/default.nix

{
  config,
  lib,
  pkgs,
  ...
}:
{
  imports = [ ../24.05-compat.nix ];

  options.hardware.intelgpu = {
    driver = lib.mkOption {
      description = "Intel GPU driver to use";
      type = lib.types.enum [
        "i915"
        "xe"
      ];
      default = "i915";
    };

    loadInInitrd =
      lib.mkEnableOption "Load the Intel GPU kernel module at stage 1 boot. (Added to `boot.initrd.kernelModules`)"
      // {
        default = true;
      };
  };

  config =
    let
      cfg = config.hardware.intelgpu;
    in
    {
      boot.initrd.kernelModules = lib.optionals cfg.loadInInitrd [ cfg.driver ];

      hardware.graphics.extraPackages = with pkgs; [
        (
          if (lib.versionOlder (lib.versions.majorMinor lib.version) "23.11") then
            vaapiIntel
          else
            intel-vaapi-driver.override { enableHybridCodec = true; }
        )
        intel-media-driver
      ];

      hardware.graphics.extraPackages32 = with pkgs.driversi686Linux; [
        (
          if (lib.versionOlder (lib.versions.majorMinor lib.version) "23.11") then
            vaapiIntel
          else
            intel-vaapi-driver.override { enableHybridCodec = true; }
        )
        intel-media-driver
      ];

      assertions = [
        {
          assertion = (
            cfg.driver != "xe" || lib.versionAtLeast config.boot.kernelPackages.kernel.version "6.8"
          );
          message = "Intel Xe GPU driver is not supported on kernels earlier than 6.8. Update or use the i915 driver.";
        }
      ];
    };
}