anchor.diff:    webthing = callPackage ../development/python-modules/webthing { };
   
     werkzeug = callPackage ../development/python-modules/werkzeug {
  -    pytestCheckHook = self.pytest_6_1CheckHook;
  +    pytestCheckHook = self.pytestCheckHook_6_1;
     };
   
     west = callPackage ../development/python-modules/west { };
  
positive.code:   trimesh = callPackage ../development/python-modules/trimesh { };
  
    trio = callPackage ../development/python-modules/trio {
      pytestCheckHook = self.pytest_6_1CheckHook;
    };
  
    trollius = callPackage ../development/python-modules/trollius { };
  
negative.code:   urlgrabber = callPackage ../development/python-modules/urlgrabber { };
  
    urllib3 = callPackage ../development/python-modules/urllib3 {
      pytestCheckHook = self.pytestCheckHook_6_1;
    };
  
    urwid = callPackage ../development/python-modules/urwid { };
  