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#75709
Emacs fails to start with "List contains a loop" error
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Your bug report
#75709: Emacs fails to start with "List contains a loop" error
which was filed against the guix package, has been closed.
The explanation is attached below, along with your original report.
If you require more details, please reply to 75709 <at> debbugs.gnu.org.
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75709: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75709
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems
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Am Montag, dem 03.02.2025 um 20:40 +0100 schrieb Ludovic Courtès:
> Hey Liliana,
>
> Ludovic Courtès <ludo <at> gnu.org> skribis:
>
> > Liliana Marie Prikler <liliana.prikler <at> gmail.com> skribis:
> >
> > > > 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?
> >
> > There was one but it was deactivated; I’ve now reactivated it.
> >
> > https://ci.guix.gnu.org/jobset/emacs-team
>
> Could you please merge it if that’s OK?
>
> I think it’s a real problem to keep Emacs broken when we have a fix
> and substitutes.
Ahh, my bad. It was already merged as
f9b1e548c95a115e2bb143d0f4b1632a600f32da, but I forgot to close the
bug.
Cheers
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Since a recent "guix pull", Emacs (I tested with the emacs-pgtk package)
can't start up anymore:
$ emacs
List contains a loop: ("/home/user/.guix-profile/lib/emacs/native-site-lisp" "/gnu/store/k62mmzkbmivw2r3wwlpcxs3lp9vwjyac-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/k62mmzkbmivw2r3wwlpcxs3lp9vwjyac-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp" . #2)
$ echo $?
255
The root cause of the problem is that I have duplicate path entries in
these environment variables:
$ env | grep EMACS
EMACSNATIVELOADPATH=/home/sademeo/.guix-profile/lib/emacs/native-site-lisp:/home/sademeo/.guix-profile/lib/emacs/native-site-lisp
EMACSLOADPATH=/home/sademeo/.guix-profile/share/emacs/site-lisp:/home/sademeo/.guix-profile/share/emacs/site-lisp
If I remove the duplicate entries, Emacs starts correctly again.
I suppose this is a common problem (it's surprisingly hard to ensure a
given shell initialization snippet will run only once), and also it's
hardly a fatal or unrecoverable error. IMHO it should warrant at most a
warning message (if that), not a complete abort of the program.
With that in mind, I bisected Guix and arrived at this commit:
e9b13294700de7082ee23aa6e1c17b4a8c8828ec is the first bad commit
commit e9b13294700de7082ee23aa6e1c17b4a8c8828ec
profiles: emacs-subdirs: Also expand native-comp-eln-load-path.
To reproduce the problem, it's enough to install emacs-pgtk and
emacs-ccls in your profile. It might be necessary to remove them and
then install them again, not sure why.
Guix version:
$ guix describe
Generation 17 jan 20 2025 18:48:17 (current)
guix e9b1329
repository URL: https://git.savannah.gnu.org/git/guix.git
commit: e9b13294700de7082ee23aa6e1c17b4a8c8828ec
It's probably irrelevant, but just for completeness: Guix is installed
on top of Ubuntu 24.10.
--
Thiago
This bug report was last modified 104 days ago.
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