Lua in pure Rust: https://github.com/kyren/piccolo

Absolutely!

One solution at a time I guess :)

But if your emacs community is in favor of the comments replication approach then that’d be a good testbed that might lead to even better approaches deemed acceptable elsewhere.

I think something like this can work, if you bring humans fully into the loop. Posts should be made by people, so that someone’s responsible for the thread that gets made.

What about a ‘repost queue’ of Reddit that Lemmy users can sign up for? Having signed up to this queue, e.g. for /r/rust, I’d be presented with a list of the posts on /r/rust that do not yet exist on .dev/c/rust. Every hour or so I could opt to do a repost to Lemmy, from my own account.

In other words you’re just facilitating a manual action that’s already taking place.

Yep, there’s a clear avenue here. Discourse (where I no longer work, so I shouldn’t really have that staff title any longer) is also implementing ActivityPub, so the Rust forum will actually be able to subscribe to this hypothetical /rust community as well. We just have to give them a good enough reason to do so, by achieving a modicum of unification through this group-follow proposal.

Then it’ll be up to the Rust team to decide which particular /rust community on the fediverse they will hook up the official forum to as their trusted gateway into the larger network.

Thanks for the tip! I’ll reach out to them.