And thank goodness for that. It is impossible to reason about types in such monstrosities.

If when looking at the pile of regexes which is Django’s router, your thought is “good, this way I can reason about types!”, then Ruby is definitely not the language for you.

No, I just implement a custom router class as the docs suggest, and move on with my life. It’s a much better use of my time than fighting mental-masturbation DSLs.