anchor.diff:  
   buildPythonPackage rec {
     pname = "pytest-ansible";
  -  version = "2.0.2";
  +  version = "2.1.1";
   
  -  src = fetchPypi {
  -    inherit pname version;
  -    sha256 = "d69d89cbcf29e587cbe6ec4b229346edbf027d3c04944dd7bcbf3d7bba46348f";
  +  src = fetchFromGitHub {
  +    owner = "ansible";
  +    repo = "pytest-ansible";
  +    rev = "v${version}";
  +    sha256 = "0v97sqk3q2vkmwnjlnncz8ss8086x9jg3cz0g2nzlngs4ql1gdb0";
     };
   
     patchPhase = ''
  
positive.code: { stdenv
  , buildPythonPackage
  , fetchPypi
  , ansible
  , pytest
  , mock
  
negative.code:   checkInputs =  [ mock ];
    propagatedBuildInputs = [ ansible pytest ];
  
    # tests not included with release, even on github
    doCheck = false;
  
    checkPhase = ''
      HOME=$TMPDIR pytest tests/
    '';
  
    meta = with stdenv.lib; {
  