anchor.diff:      venvShellHook
       wheelUnpackHook;
   
  -  pytest_6_1CheckHook = self.pytestCheckHook.override { pytest = self.pytest_6_1; };
  +  pytestCheckHook_6_1 = self.pytestCheckHook.override { pytest = self.pytest_6_1; };
   
     # helpers
   
  
positive.code:   aiohomekit = callPackage ../development/python-modules/aiohomekit { };
  
    aiohttp = callPackage ../development/python-modules/aiohttp {
      pytestCheckHook = self.pytest_6_1CheckHook;
    };
  
    aiohttp-cors = callPackage ../development/python-modules/aiohttp-cors { };
  
negative.code:   async-timeout = callPackage ../development/python-modules/async_timeout { };
  
    async-upnp-client = callPackage ../development/python-modules/async-upnp-client {
      pytestCheckHook = self.pytestCheckHook_6_1;
    };
  
    asyncwhois = callPackage ../development/python-modules/asyncwhois { };
  