Aaron Torgerson

Agreed. It is rather odd to not be able to specify that "this property must be set from either a file or environment variable - no default is allowable".

Turns out `sentry-python` fixed this issue in [`1.5.8`](https://github.com/getsentry/sentry-python/releases/tag/1.5.8) ([PR](https://github.com/getsentry/sentry-python/pull/1202)). I agree with the sentiment that `django-rules` ought not to code defensively for other packages breaking standard functionality. 👍

This is asking a lot of a cache library @neozhu. You will need some sort of cache invalidation strategy that keeps track of the types and their associated "primary keys"...