bug#48108: Wishlist: Command to remove redundant eln cache directories [native-comp]

[Eli Zaretskii]

> Cc: 48108@debbugs.gnu.org, Andrea Corallo <akrl@sdf.org>
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Fri, 01 Jul 2022 13:11:03 +0200
> 
> Stefan Kangas <stefan@marxist.se> writes:
> 
> > The exact details of this would of course need to be discussed, but as
> > a starting point perhaps we could imagine two modes of operation:
> 
> [...]
> 
> > 2.  Remove all eln cache directories except the one currently in use.
> >
> > I imagine that casual users only ever use one version of Emacs at the
> > same time (i.e. because they simply install Emacs using their package
> > manager), so perhaps the first one could be the default mode of
> > operation.
> >
> > We could add a number of options to ensure a user can tweak this to
> > their own liking.
> >
> > One idea for a command name is `native-compile-cache-clear'.
> 
> I think 2) would be sufficient for most people, and, yes, having a
> command for this would be nice.

It shouldn't be hard to implement, but do we want to delete such a
directory only under ~/.emacs.d/eln-cache/, or under all the
directories in native-comp-eln-load-path?