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Re: Adding use-package to core

From: Eli Zaretskii
Subject: Re: Adding use-package to core
Date: Sat, 19 Nov 2022 17:46:08 +0200

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Philip Kaludercic <philipk@posteo.net>,  spwhitton@spwhitton.name,
>   luangruo@yahoo.com,  emacs-devel@gnu.org,  xenodasein@tutanota.de
> Date: Sat, 19 Nov 2022 10:28:56 -0500
> > packages in a release (which should include the solution for how to
> > upgrade such packages after the released Emacs is installed on the
> > user's machine),
> FWIW, this has been a solved problem already in Emacs-24: package.el has
> always been able to handle the presence of both system-wide packages and
> user-installed packages and to pick the most recent version.

It might be _almost_ solved, but I'm not sure it is 100% solved.  We
need a clear description of:

  . how are such packages installed when a release tarball is built
    and installed ("how" here means where and with which artifacts)
  . how will this work in a built but uninstalled source tree
  . how are such packages installed from a distro
  . how can they be upgraded from ELPA and downgraded back to the
    version that came with the tarball

I asked this question in the Dec 2020 discussion, and you responded


The response triggered a few followup questions, and I don't think we
have satisfactory, let alone final, answers for all of those

I'm not saying this part of the issue is rocket science, but it does
have to be figured out.

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