Yes, that's correct and then you need to tell it which driver you need for your hardware. For example like:

hardware.opengl = { extraPackages = with pkgs; [ intel-compute-runtime # OpenCL library intel-media-driver # video encoding/decoding hardware accerlation ]; extraPackages32 = with pkgs.pkgsi686Linux; [ intel-media-driver # video encoding/decoding hardware accerlation ]; };