{ stdenv, fetchurl }:
    
stdenv.mkDerivation {
  name = "szip-2.1";
  src = fetchurl {
    url = ftp://ftp.hdfgroup.org/lib-external/szip/2.1/src/szip-2.1.tar.gz;
    sha256 = "1vym7r4by02m0yqj10023xyps5b21ryymnxb4nb2gs32arfxj5m8";
  };

  meta = {
    description = "Compression library that can be used with the hdf5 library";
    homepage = http://www.hdfgroup.org/doc_resource/SZIP/;
    license = stdenv.lib.licenses.unfree;
  };
}