anchor.diff:  { lib, buildPythonPackage, fetchFromGitHub
   , flit
  -, lxml, aiohttp
  -, pytest, pytestcov, pytest-asyncio, pytest-mock, pytest-aiohttp, aresponses
  +, lxml, httpx
  +, pytest, pytestcov, pytest-asyncio, pytest-mock, aresponses
   , pythonOlder
   }:
   
   buildPythonPackage rec {
     pname = "PyRMVtransport";
  -  version = "0.2.9";
  +  version = "0.2.10";
     format = "pyproject";
     disabled = pythonOlder "3.6";
   
  
positive.code:     owner = "cgtobi";
      repo = pname;
      rev = "v${version}";
      sha256 = "1h3d0yxzrfi47zil5gr086v0780q768z8v5psvcikqw852f93vxb";
    };
  
    nativeBuildInputs = [
  
negative.code:   ];
  
    propagatedBuildInputs = [
      httpx
      lxml
    ];
  
    # requires pytest-httpx
    doCheck = false;
  
    checkInputs = [
      pytest
      pytestcov
      pytest-asyncio
      pytest-mock
      # pytest-httpx is missing
      aresponses
    ];
    checkPhase = ''
  