The parent meant “what if the file on disk contains code deltas that you need to apply to the executable”. It’s not just deltas, it’s structural modifications

The parent meant “what if the file on disk contains code deltas that you need to apply to the executable”. It’s not just deltas, it’s structural modifications of the code that allows it to be compatible with the old version. I think we partially have this with tv the likes of task runners (eg Celery in python) where you can reload the workers (code instances) whole having the old workers running.