{
  imports = [
    ./drv-parts
  ];
  perSystem = { pkgs, ... }: {
    imports = [
      ./options.nix
    ];

    builders = rec {
      fetchAsset = pkgs.callPackage ./fetch-asset { };

      hydrateAssetDirectory = pkgs.callPackage ./hydrate-asset-directory {
        inherit fetchAsset;
      };
    };
  };
}