anchor.diff:  { lib
  +, aiofiles
  +, aioftp
  +, aiohttp
   , buildPythonPackage
   , fetchPypi
  -, setuptools-scm
  -, aioftp
  -, aiohttp
  -, tqdm
  -, aiofiles
  -, pytestCheckHook
  +, pytest-asyncio
   , pytest-localserver
   , pytest-socket
  -, pytest-asyncio
  +, pytestCheckHook
  +, pythonOlder
  +, setuptools-scm
  +, tqdm
   }:
   
   buildPythonPackage rec {
     pname = "parfive";
     version = "1.5.0";
  +  format = "setuptools";
  +
  +  disabled = pythonOlder "3.7";
   
     src = fetchPypi {
       inherit pname version;
  
positive.code:   ];
  
    disabledTests = [
      "test_ftp"
      "test_ftp_pasv_command"
      "test_ftp_http"
    ];
  
    meta = with lib; {
      description = "A HTTP and FTP parallel file downloader";
      homepage = "https://parfive.readthedocs.io/";
      license = licenses.mit;
      maintainers = [ maintainers.costrouc ];
    };
  }
  
negative.code:   ];
  
    propagatedBuildInputs = [
      aioftp
      aiohttp
      tqdm
    ];
  
    checkInputs = [
  