anchor.diff:  buildPythonPackage rec {
     pname = "pyppeteer";
     version = "0.2.6";
  +  format = "pyproject";
  +
     disabled = pythonOlder "3.6";
  -  format = "pyproject";
   
     src = fetchFromGitHub {
       owner = pname;
  
positive.code:     "TestPDF"
    ];
  
    pythonImportsCheck = [ "pyppeteer" ];
  
    meta = {
      description = "Headless chrome/chromium automation library (unofficial port of puppeteer)";
      homepage = "https://github.com/pyppeteer/pyppeteer";
      license = lib.licenses.mit;
      maintainers = with lib.maintainers; [ kmein ];
    };
  }
  
negative.code: , appdirs
  , buildPythonPackage
  , fetchFromGitHub
  , importlib-metadata
  , poetry-core
  , pyee
  , pytest-xdist
  