anchor.diff:  , isPy27
   , setuptools-scm
   , cython
  +, entrypoints
   , numpy
   , msgpack
   , pytestCheckHook
  
positive.code:   ];
  
    propagatedBuildInputs = [
      numpy
      msgpack
    ];
  
negative.code: 
  buildPythonPackage rec {
    pname = "numcodecs";
    version = "0.10.2";
    disabled = isPy27;
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "sha256-IoOMaz/Zhr2cckA5uIhwBX95DiKyDm4cu6oN4ULdWcQ=";
    };
  
    nativeBuildInputs = [
  