I'd say the opposite. Specifically, Pydantic tries to do everything, and as a result (partly b/c they favor base classes over higher order functions), it isn't

I'd say the opposite. Specifically, Pydantic tries to do everything, and as a result (partly b/c they favor base classes over higher order functions), it isn't as composable as attrs is. I've done some truly amazing things with attrs because of that composability. If I'd wanted the same things with Pydantic, it would have had to be a feature request.