debugging Spacemacs initialization

Earlier today I introduced a bug somewhere in Emacs and decided to delete and reinstall Spacemacs, while keeping my ~/.spacemacs configuration.

This introduced another bug where auth-source was not able to read my Open API API anymore. This expression kept evaluating to nil:

  (auth-source-search
   :host "api.openai.com"
   :user "apikey"
   :require '(:secret)
   )

I noticed that if I evaluated auth-source-forget-all-cached, the expression above would successfully find my credentials.

And after some more debugging, I discovered a credential in the password cache (password-data variable) that wasn't in ~/.authinfo.gpg.

In order to find who was inserting this data, I added a (debug-on-entry 'password-cache-add) in ~/.emacs.d/init.el and found the culprit in the stack traces.