anchor.diff:    propagatedBuildInputs = [
       EasyProcess
       entrypoint2
  +    pillow
     ] ++ lib.optionals (isPy3k) [
       jeepney
       mss
  
positive.code:   # recursive dependency on pyvirtualdisplay
    doCheck = false;
  
    meta = with lib; {
      description = "python screenshot";
      homepage = "https://github.com/ponty/pyscreenshot";
  
negative.code: , entrypoint2
  , jeepney
  , mss
  , pillow
  }:
  
  buildPythonPackage rec {
  