anchor.diff:    meta = with lib; {
       homepage = "https://github.com/intake/filesystem_spec";
       description = "A specification that Python filesystems should adhere to";
  +    changelog = "https://github.com/fsspec/filesystem_spec/raw/${version}/docs/source/changelog.rst";
       license = licenses.bsd3;
       maintainers = [ maintainers.costrouc ];
     };
  
positive.code: 
  buildPythonPackage rec {
    pname = "fsspec";
    version = "2022.01.0";
    disabled = pythonOlder "3.6";
  
    src = fetchFromGitHub {
      owner = "intake";
      repo = "filesystem_spec";
      rev = version;
      sha256 = "sha256-iPe2q9hY3ZRIKQGpxrHda3t9G0AtbtohVcWdnAzlzCo=";
    };
  
    propagatedBuildInputs = [
  
negative.code: , numpy
  , aiohttp
  , pytest-vcr
  , pytest-mock
  , pytest-asyncio
  , requests
  , paramiko
  , smbprotocol
  