[zozbot234]

There was an interesting talk in RustConf 2021 discussing the possibility of adding in-place construction and C++-like "move constructors" for pinned data in Rust. You can find it under the title "Move Constructors: Is It Possible?" by Michel Young de la Sota.

[Tamschi]

There's actually a direct mention of that in my post already, but it's all the way near the bottom in the "Weakening non-moveability" section. It probably goes a bit too far to link in the intro, so I inlined a quick definition as relative clause there instead.

The `moveit` library is interesting also because it would allow pinning containers to expose a wider mutable API, though there's currently no trait to update instances post-move, which would allow `realloc` use. I filed an issue for it about a week ago: https://github.com/google/moveit/issues/26

That still leaves the issue of callback targets though, which would have to be notified before a possible move to support one-step reallocation.