{stdenv, fetchurl, zlib}: stdenv.mkDerivation { name = "unshield-0.5"; src = fetchurl { url = http://heanet.dl.sourceforge.net/sourceforge/synce/unshield-0.5.tar.gz; sha256 = "1apdj4qphf6m21lqj9l8sg8rpn85qkp5592w5np9xbhr8776cg3p"; }; configureFlags = "--with-zlib=${zlib}"; }