c3839deddd
This upgrades pyqt5 and fixes the build. Note that the QtWebEngine module is split into `pyqtwebengine` by upstream and us. If your application gives an error that a Qt module is missing, then that is most likely because it was not included when building pyqt5. The solution is to simply add it here to the `(native)BuildInputs`. Don't forget to add an import check. We should include all the modules (except qtwebkit) that are needed.