anchor.diff:  , buildPythonPackage
   , isPyPy
   , fetchPypi
  -, pytest
  -, setuptools_scm
  +, pytestCheckHook
  +, setuptools-scm
   , apipkg
   }:
   
  
positive.code:     ${lib.optionalString isPyPy "rm -v testing/test_multi.py"}
    '';
  
    checkPhase = ''
      py.test testing
    '';
  
    __darwinAllowLocalNetworking = true;
  
    meta = with lib; {
      description = "Rapid multi-Python deployment";
      license = licenses.gpl2;
      homepage = "https://execnet.readthedocs.io/";
      maintainers = with maintainers; [ nand0p ];
    };
  
negative.code:     sha256 = "cacb9df31c9680ec5f95553976c4da484d407e85e41c83cb812aa014f0eddc50";
    };
  
    checkInputs = [ pytestCheckHook ];
    nativeBuildInputs = [ setuptools-scm ];
    propagatedBuildInputs = [ apipkg ];
  
    # remove vbox tests
  