The solution is don't use ipynb. Instead, use an IDE that can run code segments in files, and version those files. You end up with files which are syntacticall

The solution is don't use ipynb. Instead, use an IDE that can run code segments in files, and version those files. You end up with files which are syntactically correct code, versionable, and can be run in segments just like ipynb. Win, win, win.