anchor.diff:    ];
   
     checkInputs = [
  +    astropy
  +    lz4
       pytest-astropy
  -    astropy
       pytestCheckHook
     ];
   
  
positive.code: 
  buildPythonPackage rec {
    pname = "asdf";
    version = "2.10.1";
    disabled = pythonOlder "3.6";
    format = "pyproject";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "sha256-9+Vp8ps3I5Oe/sgWTrLtcnS91ICwsoPXWDPw9Z0QhAk=";
    };
  
    nativeBuildInputs = [ setuptools-scm ];
  
    propagatedBuildInputs = [
      jmespath
      jsonschema
      numpy
  
negative.code: { lib
  , asdf-standard
  , asdf-transform-schemas
  , astropy
  , buildPythonPackage
  , fetchPypi
  , importlib-resources
  , jmespath
  , jsonschema
  , lz4
  , numpy
  , packaging
  , pytest-astropy
  