Here’s a relevant GH issue: https://github.com/LemmyNet/lemmy/issues/317
I’ve seen this and all related gh issues, but I didn’t see anyone working on it yet sadly.
I am working on it! My team and I are working on this issue as we speak (I literally tabbed out of VS Code to answer this) and we plan to roll them out to our modded instance in a matter of days, it’s our top priority.
Extending support for this feature to the wider lemmy codebase is not paramount to our roadmap, but we will certainly make a pull request once we are done. If the lemmy devs will like our implementation and decide to adopt it we will definitely be very glad to help them doing so.
EDIT, 10 days after: only now I see that the links was about post flairs, not user flairs. To clarify, I am working on user flair, no idea if and who is working on post flairs.
Making draft PRs, even if they don’t work yet, might be a good way of demonstrating that you’re working on something. Or do you get too much useless feedback when you do?