anchor.diff:    meta = {
       homepage = https://github.com/fonttools/fonttools;
       description = "A library to manipulate font files from Python";
  +    license = lib.licenses.mit;
     };
   }
  
positive.code: { buildPythonPackage
  , fetchPypi
  , numpy
  , pytest
  
negative.code: 
  buildPythonPackage rec {
    pname = "fonttools";
    version = "3.41.0";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "1f3q9sadwy6krsjicrgjsl1w2dfd97j4l645lnl1f5y3y1jkj4fh";
      extension = "zip";
    };
  
  