anchor.diff:  { lib
   , attrs
   , buildPythonPackage
  -, defusedxml
   , fetchFromGitHub
   , hypothesis
   , pythonOlder
  +, importlib-metadata
   , jbig2dec
   , lxml
   , mupdf
  -, packaging
   , pillow
   , psutil
   , pybind11
  
positive.code: 
    postPatch = ''
      sed -i 's|\S*/opt/homebrew.*|pass|' setup.py
    '';
  
    SETUPTOOLS_SCM_PRETEND_VERSION = version;
  
negative.code:     description = "Read and write PDFs with Python, powered by qpdf";
      license = licenses.mpl20;
      maintainers = with maintainers; [ kiwi dotlambda ];
      changelog = "https://github.com/pikepdf/pikepdf/blob/${src.rev}/docs/releasenotes/version${lib.versions.major version}.rst";
    };
  }
  