{
  lib,
  config,
  ...
}: {
  options = {
    allowUnfreePkgNames = lib.mkOption {
      type = lib.types.listOf lib.types.str;
    };
  };

  config = {
    nixpkgs.config.allowUnfreePredicate = pkg:
      builtins.elem (lib.getName pkg) config.allowUnfreePkgNames;
  };
}