{fetchurl}: {
  core = fetchurl {
    url = "https://dev.bukkit.org/projects/dynmap/files/4600162/download";
    sha256 = "a49b03ea1fd6ad4fbd94fdb1b8ec25a1d8b989744740ef82cc4145222fb326bd";
    name = "Dynmap.jar";
  };
}