nixos-config/machines/chungus/hardware-configuration/graphics.nix

# https://wiki.nixos.org/wiki/Accelerated_Video_Playback
{ pkgs, ... }:
{

  hardware.graphics.enable = true;
  hardware.graphics.extraPackages = with pkgs; [
    intel-media-driver # LIBVA_DRIVER_NAME=iHD
    #vaapi-intel-hybrid
    intel-vaapi-driver # For older processors. LIBVA_DRIVER_NAME=i965
    #vaapiIntel # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
    #vaapiVdpau
    #libvdpau-va-gl
  ];
  hardware.graphics.enable32Bit = true;
  hardware.graphics.extraPackages32 = with pkgs.pkgsi686Linux; [ intel-vaapi-driver ];

  environment.sessionVariables = {
    LIBVA_DRIVER_NAME = "i965";
  }; # Optionally, set the environment variable

}