guix pull: error: aborting update of channel 'guix' to commit which is not a descendant

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  • Andreas Enge
  • john
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john
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J
J
john wrote on 27 Jul 13:34 -0700
(address . bug-guix@gnu.org)
87v7ndbcfj.fsf-genuine-vii@john.fremlin.org
I ran guix pull

Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
guix pull: error: aborting update of channel 'guix' to commit ed8288a53da9951ed66a6b725246971585e9fac5, which is not a descendant of ad8cb7af8fc572bb3d11cd0344bd2bed3b9d653f
hint: This could indicate that the channel has been tampered with and is trying to force a roll-back, preventing you from getting the latest updates. If you think this is
not the case, explicitly allow non-forward updates.

The commit I am at is

commit ad8cb7af8fc572bb3d11cd0344bd2bed3b9d653f
Author: nomike <nomike@nomike.com>
Date: Mon Jun 2 04:45:53 2025 +0200

gnu: openscad: Update to 2025.06.01.

this appears in the github branch as

commit 544ac628f598bf94a777a3fc2eed39f645f9a01d
Author: nomike <nomike@nomike.com>
Date: Mon Jun 2 04:45:53 2025 +0200

gnu: openscad: Update to 2025.06.01.


Is this expected? Differences between the branches include

commit 68deb8e3bda83a84acfe192392a66ecba19cece6
Author: Leo Famulari <leo@famulari.name>
Date: Wed May 28 12:31:23 2025 -0400

etc: pre-push Git hook: Reduce code duplication.

* etc/git/pre-push (perform_checks): New function.

Change-Id: Ieff1e2c225e3720c96c75ca55abfb883dd386f5c
A
A
Andreas Enge wrote on 28 Jul 01:15 -0700
(address . john@fremlin.org)(address . 79107@debbugs.gnu.org)
aIcxsjf2gip-n_AP@jurong
Hello,

Am Sun, Jul 27, 2025 at 04:34:24PM -0400 schrieb john@fremlin.org:
Toggle quote (11 lines)
> Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
> guix pull: error: aborting update of channel 'guix' to commit ed8288a53da9951ed66a6b725246971585e9fac5, which is not a descendant of ad8cb7af8fc572bb3d11cd0344bd2bed3b9d653f
> hint: This could indicate that the channel has been tampered with and is trying to force a roll-back, preventing you from getting the latest updates. If you think this is
> not the case, explicitly allow non-forward updates.
>
> The commit I am at is
> commit ad8cb7af8fc572bb3d11cd0344bd2bed3b9d653f
> this appears in the github branch as
>
> commit 544ac628f598bf94a777a3fc2eed39f645f9a01d

this is strange indeed. I confirm that 544ac628f598bf94a777a3fc2eed39f645f9a01d
is on the master branch, while ad8cb7af8fc572bb3d11cd0344bd2bed3b9d653f
is not present in my git checkout.

Did you do a "guix pull --commit=..." to a commit on a different branch?
This is the only explanation I can see. You could safely pull to a new
commit that you know to be on the master branch. Or if you want to
examine a bit more, you can look at your pull history with
guix pull --list-generations
to check, for instance, whether a previous commit corresponds to one on
the master branch, and could go back to it with
guix pull --switch-generation=NNN
where NNN is the number (not the commit), and do a "guix pull" from
there.

But the result should be the same in any case, it depends only on the
commit where you pull to, not where you come from.

Andreas
A
A
Andreas Enge wrote on 29 Jul 02:01 -0700
(address . john@fremlin.org)(address . 79107-done@debbugs.gnu.org)
aIiN68ub6Z886HWj@jurong
Closing as there does not seem to be an issue on the Guix side.

Andreas
Closed
J
J
John Fremlin wrote on 29 Jul 06:26 -0700
Re: bug#79107: closed (Re: g uix pull: error: aborting upd ate of channel 'guix' to comm it which is not a descendant)
(address . 79107@debbugs.gnu.org)
D2E79858-E6EA-452C-A636-2138A0EA7A0B@fremlin.org
I did not pull from any special commit and this is a fairly recent install (from 2024 about November)

On July 29, 2025 5:02:02 AM EDT, help-debbugs@gnu.org wrote:
Toggle quote (13 lines)
>Your bug report
>
>#79107: guix pull: error: aborting update of channel 'guix' to commit which is not a descendant
>
>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 79107@debbugs.gnu.org.
>
>--
>79107: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=79107
>GNU Bug Tracking System
>Contact help-debbugs@gnu.org with problems
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