bug#65666: Lockfiles break package-vc-install-from-checkout

[Eli Zaretskii]

> From: Joseph Turner <joseph@breatheoutbreathe.in>
> Cc: philipk@posteo.net, 65666@debbugs.gnu.org, adam.porter@47ap.net
> Date: Sat, 02 Sep 2023 10:15:48 -0700
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> > Or make the REGEXP argument to directory-files-recursively more
> > specific, to reject lock files.
> >
> > But yes, the use of file-exists-p is not TRT, IMO.
> 
> See patch.

Thanks, this LGTM.