anchor.diff:      owner  = pname;
       repo   = pname;
       rev    = version;
  -    sha256 = "1y9f071bdl66rsx42j16j5v53h85xra5qlg860rz3m054s2rmin9";
  +    sha256 = "MUIZGnYwlfTat9655AOYgK5r6AvHj/xXghUvOZR8HIM=";
     };
  +
  +  nativeBuildInputs = [ setuptools-scm ];
   
     # all dependencies are optional, but
     # we run the checks with them
  
positive.code: , sphinx
  , pytestCheckHook
  , glibcLocales
  }:
  
  buildPythonPackage rec {
    pname = "fonttools";
    version = "4.30.0";
  
    disabled = pythonOlder "3.7";
  
  
negative.code:     "Tests/ufoLib"
    ];
  
    meta = with lib; {
      homepage = "https://github.com/fonttools/fonttools";
      description = "A library to manipulate font files from Python";
  