{ lib, config }:
{
  options.local.allowedUnfree = lib.mkOption {
    type = lib.types.listOf lib.types.str;
    default = [ ];
  };

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