bug#47458: closed (Terrible UX upgrading Emacs in Guix)

[GNU bug Tracking System]

Your message dated Thu, 20 May 2021 09:24:16 -0400
with message-id <87v97dzgfz.fsf@gmail.com>
and subject line Re: bug#47458: Terrible UX upgrading Emacs in Guix
has caused the debbugs.gnu.org bug report #47458,
regarding Terrible UX upgrading Emacs in Guix
to be marked as done.

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47458: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47458
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> --- Begin Message ---
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> Subject: 
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> Terrible UX upgrading Emacs in Guix
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> Date: 
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> Sun, 28 Mar 2021 22:02:20 -0400
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>
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>
> I just updated my Guix system, which included the Emacs update from 27.1
> to 27.2.  After "guix package -m mhw-manifest.scm" finished running
> (which takes a long time for me, since I don't use substitutes), and
> before I even noticed that it had finished, my existing Emacs session
> started misbehaving badly.
>
> It failed to even open a plain text file in fundamental mode (a .drv
> file) with an inscrutible error about 'arrayp'.  I tried to enable the
> debugger with M-x toggle-debug-on-error, but then I started getting
> errors about 'debug' not found.  (I neglected to record the exact
> messages).
>
> I tried running "emacs -Q", and the same errors happened there too.  I
> tried running "emacs -Q" from my root shell on a Linux text terminal,
> and the same errors happened there.
>
> I resorted to using 'vi' (which thankfully I had, and still remember how
> to use for basic editing) to revert the emacs update on my private
> branch and to rebuild my user profiles.
>
> Eventually, I realized what the problem was:
>
> (1) My existing emacs session started failing because
>     ~/.guix-profile/share/emacs/27.1 had disappeared out from under it.
>
> (2) My newly launched emacs sessions were failing because my
>     EMACSLOADPATH variable was still set to its old value, pointing at
>     /home/mhw/.guix-profile/share/emacs/27.1/lisp, which no longer
>     existed.
>
> I'm not sure why I've never run into this problem before.  I'm also not
> sure what can be done to make this better, but if anyone has ideas, that
> would be good.  If a 7+ year Guix veteran developer gets bitten badly by
> this, I doubt that less experienced users will be impressed.
>
> Any ideas?
>
>        Mark
>
>
>
> --- End Message ---
> --- Begin Message ---
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>
>
> Subject: 
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> Re: bug#47458: Terrible UX upgrading Emacs in Guix
>
>
>
>
> Date: 
>
> Thu, 20 May 2021 09:24:16 -0400
>
>
>
>
> User-agent: 
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> Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux)
>
>
>
>
> Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:
>
> This should be fixed with the recently merged changes from Leo.  See
> commit 307a2d2e2a833c2e1f7a79f46e4c6945c618cd8c. Thank you!
>
> Closing.
>
> Maxim
>
>
> --- End Message ---