{stdenv, fetchurl}:

stdenv.mkDerivation {
  name = "libungif-4.1.4";
  src = fetchurl {
    url = http://nix.cs.uu.nl/dist/tarballs/libungif-4.1.4.tar.gz;
    md5 = "efdfcf8e32e35740288a8c5625a70ccb";
  };
}