anchor.diff:    propagatedBuildInputs = [
       aiofiles
       anyio
  -    graphene
       itsdangerous
       jinja2
       python-multipart
  
positive.code: , aiofiles
  , anyio
  , contextlib2
  , graphene
  , itsdangerous
  , jinja2
  , python-multipart
  
negative.code: 
  buildPythonPackage rec {
    pname = "starlette";
    version = "0.17.1";
    format = "setuptools";
  
    disabled = pythonOlder "3.6";
  
    src = fetchFromGitHub {
      owner = "encode";
      repo = pname;
      rev = version;
      sha256 = "sha256-qT/w7r8PsrauLoBolwCGpxiwhDZo3z6hIqKVXeY5yqA=";
    };
  
    postPatch = ''
  