{stdenv, fetchurl, unzip, ant, jre}: 

stdenv.mkDerivation {
  name = "ecj-3.1";
  builder = ./builder.sh;
  src = fetchurl {
    url = http://nix.cs.uu.nl/dist/tarballs/eclipse-sourceBuild-srcIncluded-3.1.zip;
    md5 = "19ad65d52005da5eaa1d3687b3a50de2";
  };

  inherit jre;
  buildInputs = [unzip ant jre];
}