anchor.diff:  , buildPythonPackage
   , fetchPypi
   , importlib-metadata
  -, isPy27
   , logfury
   , pytestCheckHook
   , pytest-lazy-fixture
  
positive.code:     description = "Client library and utilities for access to B2 Cloud Storage (backblaze)";
      homepage = "https://github.com/Backblaze/b2-sdk-python";
      license = licenses.mit;
    };
  }
  
negative.code: buildPythonPackage rec {
    pname = "b2sdk";
    version = "1.14.1";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  
    src = fetchPypi {
      inherit pname version;
      hash = "sha256-fYOeyhKm9mRT61NcQVaXFKeRC8AS9lfIZMO/s6iFaeg=";
    };
  
    nativeBuildInputs = [
  