anchor.diff:  , fetchFromGitHub
   , isPy27
   , pygments
  -, pytest
  +, pytestCheckHook
   , pytestcov
   , uvloop
   }:
  
positive.code:     export HOME=$TMPDIR
    '';
  
    checkPhase = ''
       pytest
    '';
  
    meta = with lib; {
      description = "Boilerplate for asyncio applications";
  
negative.code:   ];
  
    checkInputs = [
      pytestCheckHook
      pytestcov
      uvloop
    ];
  