anchor.diff:      sha256 = "0b4211s0zzdmh74k49ss0m9lc2ql2iazq2aa95ams6h45vqcr0w3";
     };
   
  -  buildInputs = [ hdf5 cython bzip2 lzo ];
  +  buildInputs = [ hdf5 cython bzip2 lzo c-blosc ];
     propagatedBuildInputs = [ numpy numexpr six ];
   
     # The setup script complains about missing run-paths, but they are
  
positive.code: { stdenv, fetchurl, python, buildPythonPackage
  , cython, bzip2, lzo, numpy, numexpr, hdf5, six }:
  
  buildPythonPackage rec {
    version = "3.3.0";
  
negative.code:     [ "--hdf5=${hdf5}"
        "--lzo=${lzo}"
        "--bzip2=${bzip2.dev}"
        "--blosc=${c-blosc}"
      ];
  
    # Run the test suite.
  