nix/modules/nixos/intel.nix

{
  lib,
  config,
  pkgs,
  ...
}: {
  nixpkgs.config = {
    packageOverrides = pkgs: {
      vaapiIntel = pkgs.vaapiIntel.override {enableHybridCodec = true;};
    };
  };

  hardware = {
    cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;

    opengl = {
      extraPackages = with pkgs; [
        intel-media-driver # LIBVA_DRIVER_NAME=iHD
        vaapiIntel # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
        vaapiVdpau
        libvdpau-va-gl
      ];
    };
  };
}