anchor.diff:    checkInputs =  [ mock ];
     propagatedBuildInputs = [ ansible pytest ];
   
  -  # tests not included with release
  +  # tests not included with release, even on github
     doCheck = false;
   
     checkPhase = ''
  -    pytest
  +    HOME=$TMPDIR pytest tests/
     '';
   
     meta = with stdenv.lib; {
  
positive.code: { stdenv
  , buildPythonPackage
  , fetchPypi
  , ansible
  , pytest
  , mock
  
negative.code: 
  buildPythonPackage rec {
    pname = "pytest-ansible";
    version = "2.1.1";
  
    src = fetchFromGitHub {
      owner = "ansible";
      repo = "pytest-ansible";
      rev = "v${version}";
      sha256 = "0v97sqk3q2vkmwnjlnncz8ss8086x9jg3cz0g2nzlngs4ql1gdb0";
    };
  
    patchPhase = ''
  