GNU bug report logs - #75817
[PATCH] profiles: emacs-subdirs: Avoid building list with a loop

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From: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 75817 <at> debbugs.gnu.org, Thiago Jung Bauermann <bauermann <at> kolabnow.com>
Subject: [bug#75817] [PATCH v2] profiles: emacs-subdirs: Avoid building list with a loop
Date: Mon, 27 Jan 2025 18:59:08 +0100

Am Montag, dem 27.01.2025 um 09:41 +0100 schrieb Ludovic Courtès:
> Hello,
> 
> Liliana Marie Prikler <liliana.prikler <at> gmail.com> skribis:
> 
> > Am Samstag, dem 25.01.2025 um 01:14 -0300 schrieb Thiago Jung
> > Bauermann:
> > > If the EMACSNATIVELOADPATH environment variable (by mistake) has
> > > duplicated
> > > paths, Emacs fails to load with:
> > > 
> > >   $ emacs
> > >   List contains a loop:
> > >   ("/home/user/.guix-profile/lib/emacs/native-site-lisp"
> > >    "/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp"
> > >    "/home/user/.guix-profile/lib/emacs/native-site-lisp"
> > >    "/home/user/.guix-profile/lib/emacs/native-site-lisp"
> > >    "/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp"
> > > .
> > > #2)
> > >   $ echo $?
> > >   255
> > > 
> > > A git bisect in Guix to find when the problem was introduced
> > > arrived
> > > at commit e9b13294700d ("profiles: emacs-subdirs: Also expand
> > > native-comp-eln-load-path.").
> > > 
> > > Fix the problem by applying Liliana's suggestion of changing
> > > 'nconc'
> > > to 'append' in the Elisp code written to subdirs.el.
> > > 
> > > * guix/profiles.scm (emacs-subdirs): Use 'append' rather than
> > > 'nconc'.
> > > 
> > > Change-Id: If646b806f24666b5247850d30d2819c7482c130b
> > > Fixes: Emacs "List contains a loop" error
> > > <https://issues.guix.gnu.org/75709>
> > > Suggested-by: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
> > > ---
> > Reworded commit message slightly and pushed to emacs-team.  Let's
> > wait a little for all Emacsen to rebuild on CI before merging this
> > into master :)
> 
> Looking forward to applying this fix (exwm wouldn’t start this
> morning).
> :-)
Welp, I just found out the hard way there is no jobset for emacs-team…
Should we add one or just directly push to master?

Cheers

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