Pulling out a conversation from #1651 (comment):

One question I've had is if we should be re-exporting the pki-types, maybe as rustls::types? I think that would make life a bit easier? We could do the same across some of the other crates, I suppose.

My feeling is no. We can document that rustls depends on pki-types 1.0, but I think the pattern of re-exporting a crate in multiple places is confusing.

One of my very confusing experiences as a Rust beginner was noticing that hyper::Response and http::Response have the same documentation, the same methods, and so on, but are in different libraries. It's not documented that one is actually a re-export of the other, so I thought it might have been copy-pasted code or an older version of the same library. I wound up spending some time looking carefully for differences to see why these were different types, and of course found none.