One cannot simply change the (possibly invariant) lifetime in `<R as RefType<'s>>::Ref` about selfie HOT 3 CLOSED

Hi, and thanks for your detailed report!

I think the issues you are describing only apply to an older version of Selfie though (I'm assuming 0.0.2?).
On the latest version on main (726013f) I have already made fixes to the lifetimes in with_referential[_mut], following the discussion on the rust forum.

I think the changes in that commit fix the issues you've been describing, as the examples you provide do not pass the borrow checker anymore, and the referential method is gone (since indeed it is impossible to write as of now). Of course if you could double-check that it is actually the case, that would be very helpful. 🙂

Another issue here is also that I completely forgot to release v0.0.3 with those fixes. As per that same forum thread, it seems my current approach is most likely unsound anyway, so I ended up stopping to work on the project altogether.

I had the idea to leverage async function for self-referential purposes instead (see the async branch), but I couldn't make it work, and I just found out nolife beat me to it anyway! (On top of seemingly being actually sound and having a smart name too!)

I'll make a v0.0.3 release with the aforementioned fixes so that my few users get to at least have less unsoundness, and then I'll follow up by properly archiving the project, and referring to other projects like ouroboros or nolife, which actually seem to be sound.

from selfie.

Ah, yes, I haven't looked at the (unpublished on crates.io) latest version from the repo I suppose.

from selfie.

Yes, that's my bad, I should have published it on crates.io a while ago. I just uploaded v0.0.3 with the fixes and yanked the previous versions, and I properly marked the library as unsound in the README.md file.

Thanks a lot for your help by the way, here and on the forums. Even if this experiment didn't pan out, your work is very much appreciated. 🙂

from selfie.