Ok thanks. Is the intention for that to grow, as a curated set of libraries that isn't quite the standard library? Or so you think some of those will move into the standard library if they become canonical or stable enough?

We’ll see; it’s not a simple thing.

In theory they can move into the standard library, but none ever have. The process exists though.

I can think of a bunch of stuff that has moved or is moving from third party crates into the standard library: parking_lot, hashbrown, (minimal) Future trait. But I agree that no crate has moved wholesale into the standard lib.

parking lot and hashbrown moved their internals, replacing ones that already existed. This is probably a distinction that doesn’t actually matter but in my head it’s different for some reason, thanks for pointing it out :)

Is there a list of these somewhere? Crates.io doesn’t appear to let me sort by author.

This is the GitHub repository

https://github.com/rust-lang-nursery/

We’re in the process of deprecating the nursery, so they’ll end up in the rust-lang org at some point.