Comment 6 for bug 1814924

sure, why not. You will want the next change as well - https://sourceforge.net/p/sbcl/sbcl/ci/2a65fb2aa66acc0dfdb11ec4f8601d457d49d543/

I can see a small window of opportunity for a glitch involving the wrong result in concurrent threads if package-local-nicknames are involved. If you can expose such a glitch then I definitely need to fix it soonish, but I probably will want to start thinking about how to fix it now.