anchor.diff:  , lib
   , buildPythonPackage
   , fetchPypi
  +, argon2_cffi
   , nose
   , nose_warnings_filters
   , glibcLocales
  
positive.code: 
    LC_ALL = "en_US.utf8";
  
    checkInputs = [ nose glibcLocales ]
      ++ (if isPy3k then [ nose_warnings_filters ] else [ mock ]);
  
    propagatedBuildInputs = [
      jinja2 tornado ipython_genutils traitlets jupyter_core send2trash
      jupyter_client nbformat nbconvert ipykernel terminado requests pexpect
      prometheus_client
    ];
  
    # disable warning_filters
  
negative.code: , send2trash
  , pexpect
  , prometheus_client
  , pytestCheckHook
  }:
  
  buildPythonPackage rec {
  