{stdenv, fetchurl, zlib ? null, zlibSupport ? true}: assert zlibSupport -> zlib != null; stdenv.mkDerivation { name = "python-2.4.1"; src = fetchurl { url = http://www.python.org/ftp/python/2.4.1/Python-2.4.1.tar.bz2; md5 = "de3e9a8836fab6df7c7ce545331afeb3"; }; buildInputs = [ (if zlibSupport then zlib else null) ]; inherit zlibSupport; }