https://github.com/clojure-emacs/cider/blob/master/cider-jar.el is new, I'd make sure that your cider.el is the latest snapshot

Hmmm have to dig into that, everything regarding clojure and cider was managed by doom until now and I never had to do anything manually.

Did you restart Emacs after the package update? From time to time this fixes problems with package.el.

Reinstalling packages manually also helps.

@U45T93RA6 Thanks for the help, got a starting point! cider-jar.el is in the repository, that looks fine to me.

@U051BLM8F Yes, Emacs was restarted. Also cleaned out the repositories folder and ran doom sync again

Same error?

Yes. The cider repo in .emacs.d/.local/straight is on 0a9d0ef429e76ee36c34e116c4633c69cea96c67

Does (require 'cider-jar) succeed in a repl? (or other Elisp eval command)

> Reinstalling packages manually also helps. That did the trick for me. I’d like to know the root cause and might look into it again later, but for now I needed everything to work again. Thanks for your help!

Sounds good! Might have been cached byte compilation

(for which the fix is removing all .elc files recursively within .emacs.d prior to starting Emacs - it's always a harmless step)

I think removing a package also removes its bytecode, but I might be mistaken. At any rate - such issues with bytecode that didn't get properly recompiled are very common.

Might fit these messages, I am just seeing right now?

definitely :) I'd guess that those messages would go away on subsequent Emacs sessions as the code get compiled again

Ha, learned something. Will do the cleanup of .elc files as you suggested, thanks!

:) Perhaps doom or straight.el maintainers would appreciate an issue report so that they can improve .elc handling

Absolutely, will try to write down the steps I did and the results 👍