bug#63757: 29.0.91 order of package paths changed: random old versions of packages in load-path

[Eli Zaretskii]

> From: Евгений Бойков <artscan@list.ru>
> Date: Mon, 5 Jun 2023 00:47:43 +1000
> Cc: philipk@posteo.net, monnier@iro.umontreal.ca, 63757@debbugs.gnu.org
> 
> > I guess we need to reverse the list of directories, since
> > directory-files sorts using string-lessp as the predicate?
> Unfortunately, `directory-files` order in `package-load-all-descriptors` is 
> later overlapped by
> `package--get-activatable-pkg` order which sorts `package-alist` in-place.

And why is that sorting a problem?