anchor.diff:  
   buildPythonPackage rec {
     pname = "monty";
  -  version = "2021.6.10";
  +  version = "2021.8.17";
     disabled = pythonOlder "3.5"; # uses type annotations
   
  -  # No tests in Pypi
     src = fetchFromGitHub {
       owner = "materialsvirtuallab";
       repo = pname;
       rev = "v${version}";
  -    sha256 = "01fhl4pl5gj4ahph4lxcm0fmglh0bjw6jz9ckmgzviasg4l1j6h4";
  +    sha256 = "0lg6d0qk6iv476rcn45p5f50kips5g9s709cxddwnk5yrz57c4d0";
     };
  +
  +  postPatch = ''
  +    substituteInPlace tests/test_os.py \
  +      --replace 'self.assertEqual("/usr/bin/find", which("/usr/bin/find"))' '#'
  +  '';
   
     propagatedBuildInputs = [
       ruamel_yaml
  
positive.code:   checkInputs = [
      pytestCheckHook
      numpy
      pydantic
      pymongo
    ];
  
    preCheck = ''
      substituteInPlace tests/test_os.py \
        --replace 'self.assertEqual("/usr/bin/find", which("/usr/bin/find"))' '#'
    '';
  
    meta = with lib; {
      description = "Serves as a complement to the Python standard library by providing a suite of tools to solve many common problems";
  
negative.code: , msgpack
  , pytestCheckHook
  , numpy
  , pandas
  , pydantic
  , pymongo
  , ruamel_yaml
  