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> How about using 'unstable' as a component of the entrypoint group?
> E.g., "nova.unstable.events"…

Well, this is a pretty heavy way to ensure that the admin gets the
picture, but maybe appropriate :)

What I don't think we want is the in-tree plugins having to hook into
something called "unstable". But, if we handle those one way and then
clearly find and loop through any "unstable $things" then maybe that's a
happy medium.

--Dan