anchor.diff: -{ lib, fetchPypi, buildPythonPackage, isPy3k
  -, colorama, configobj, packaging, pyyaml, pykwalify
  +{ lib
  +, buildPythonPackage
  +, colorama
  +, configobj
  +, fetchPypi
  +, packaging
  +, pykwalify
  +, pythonOlder
  +, pyyaml
   }:
   
   buildPythonPackage rec {
  +  pname = "west";
     version = "0.13.0";
  -  pname = "west";
  +  format = "setuptools";
   
  -  disabled = !isPy3k;
  +  disabled = pythonOlder "3.6";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "sha256-jlOmeIM6NfgYykjhgs7KpnAXFMbT/lpbT/bBaJ2CGY4=";
  +    hash = "sha256-jlOmeIM6NfgYykjhgs7KpnAXFMbT/lpbT/bBaJ2CGY4=";
     };
   
     propagatedBuildInputs = [
  
positive.code:   # pypi package does not include tests (and for good reason):
    # tests run under 'tox' and have west try to git clone repos (not sandboxable)
    doCheck = false;
    pythonImportsCheck = [
      "west"
    ];
  
    meta = with lib; {
      homepage = "https://github.com/zephyrproject-rtos/west";
      description = "Zephyr RTOS meta tool";
      longDescription = ''
        West lets you manage multiple Git repositories under a single directory using a single file,
  
negative.code:       For more details, see Multiple Repository Management in the west documentation
        (https://docs.zephyrproject.org/latest/guides/west/repo-tool.html).
      '';
      homepage = "https://github.com/zephyrproject-rtos/west";
      license = licenses.asl20;
      maintainers = with maintainers; [ siriobalmelli ];
    };
  