{fetchurl}: {
  core = fetchurl {
    url = "https://dev.bukkit.org/projects/dynmap/files/4371728/download";
    sha256 = "12n0s4qhc5gbsw649jpjyn7x4g4ilkbqq188l2r4wpwp38l134a0";
    name = "Dynmap.jar";
  };
}