Eli Zaretskii writes: > It sounds like no one sees a problem with this change, so I've now > installed it on the master branch. Would you be willing to merge the same commit on the emacs-29 branch? If ispell-buffer-session-localwords is not safe, then package-vc-install fails to install packages which set it in a dir-locals.el. This is currently the case with hyperdrive.el, whose manual recommends that users mark it as safe in their own configuration prior to installation. (put 'ispell-buffer-session-localwords 'safe-local-variable #'list-of-strings-p) It's a minor change, but worth asking for. Thank you!!! Joseph