anchor.diff:  { lib
   , appdirs
   , buildPythonPackage
  +, certifi
   , fetchFromGitHub
   , importlib-metadata
   , poetry-core
  
positive.code: 
  buildPythonPackage rec {
    pname = "pyppeteer";
    version = "0.2.6";
    format = "pyproject";
  
    disabled = pythonOlder "3.6";
  
negative.code:     owner = pname;
      repo = pname;
      rev = version;
      sha256 = "sha256-izMaWtJdkLHMQbyq7o7n46xB8dOHXZ5uO0UXt+twjL4=";
    };
  
    nativeBuildInputs = [
  