nixos/legacy/modules/intel-video.nix

{ config, pkgs, ... }:
{
  nixpkgs.config.packageOverrides = pkgs: {
    vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
  };
  hardware.opengl = {
    enable = true;
    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
    ];
  };
}