Unable to get rid of guix-past (and unable to pull)

Unable to get rid of guix-past (and unable to pull)

[Gabriel Wicki]

Howdy!

So, mysterious things seem to happen on my machines - yes, that's right,
i managed to reproduce the following behaviour.  But see yourself:

Guix pull fails (has guix-past been rebased or force-pushed?)

    gabriel@silvi ~$ guix pull
    Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
    Updating channel 'gabber' from Git repository at 'https://git.sr.ht/~gabber/gabber-channel'...
    Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'...
    Updating channel 'guix-gaming-games' from Git repository at 'https://gitlab.com/guix-gaming-channels/games.git'...
    Updating channel 'guix-past' from Git repository at 'https://codeberg.org/guix-science/guix-past.git'...
    guix pull: error: aborting update of channel 'guix-past' to commit f99ada4123de1eadf668d34dac2d726407634549, which is not a descendant of 5fb77cce01f21a03b8f5a9c873067691cf09d057
    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.

So i investigate:

    gabriel@silvi ~$ guix describe
    Generation 21	Oct 23 2024 22:56:15	(current)
    guix 5f4ba1c
        repository URL: https://git.savannah.gnu.org/git/guix.git
        branch: master
        commit: 5f4ba1c09fa0fba1ed230b80bae9f6a4d0d2d303
    gabber 20f7905
        repository URL: https://git.sr.ht/~gabber/gabber-channel
        branch: trunk
        commit: 20f7905206826e0d110cab57974b3426683ac814
    nonguix ad966c3
        repository URL: https://gitlab.com/nonguix/nonguix
        branch: master
        commit: ad966c3844385e8f7b60b0dc915f92a1eba47e09
    guix-gaming-games 5762eda
        repository URL: https://gitlab.com/guix-gaming-channels/games.git
        branch: master
        commit: 5762eda50230715555da5beb0f4d06a5456bb5c0
    guix-past 5fb77cc
        repository URL: https://gitlab.inria.fr/guix-hpc/guix-past
        branch: master
        commit: 5fb77cce01f21a03b8f5a9c873067691cf09d057

Weirdly enough, guix-past is not im my channels configuration (which is
managed by guix home):

    gabriel@silvi ~$ cat .config/guix/channels.scm
    (list (channel
            (name 'guix)
            (url "https://git.savannah.gnu.org/git/guix.git")
            (branch "master")
            (introduction
            (make-channel-introduction
                "9edb3f66fd807b096b48283debdcddccfea34bad"
                (openpgp-fingerprint
                "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA"))))
        (channel
            (name 'gabber)
            (url "https://git.sr.ht/~gabber/gabber-channel")
            (branch "trunk"))
        (channel
            (name 'nonguix)
            (url "https://gitlab.com/nonguix/nonguix")
            (branch "master")
            (introduction
            (make-channel-introduction
                "897c1a470da759236cc11798f4e0a5f7d4d59fbc"
                (openpgp-fingerprint
                "2A39 3FFF 68F4 EF7A 3D29  12AF 6F51 20A0 22FB B2D5"))))
        (channel
            (name 'guix-gaming-games)
            (url "https://gitlab.com/guix-gaming-channels/games.git")
            (branch "master")
            (introduction
            (make-channel-introduction
                "c23d64f1b8cc086659f8781b27ab6c7314c5cca5"
                (openpgp-fingerprint
                "50F3 3E2E 5B0C 3D90 0424  ABE8 9BDC F497 A4BB CC7F")))))

And even pulling with explicitly stating the channels file (which i
thought would **only** pull the channels described in said file) fails
pulling guix-past -- which is *not* part of that very file:

    gabriel@silvi ~$ guix pull --channels=!$
    guix pull --channels=.config/guix/channels.scm
    Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
    Updating channel 'gabber' from Git repository at 'https://git.sr.ht/~gabber/gabber-channel'...
    Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'...
    Updating channel 'guix-gaming-games' from Git repository at 'https://gitlab.com/guix-gaming-channels/games.git'...
    Updating channel 'guix-past' from Git repository at 'https://codeberg.org/guix-science/guix-past.git'...
    guix pull: error: aborting update of channel 'guix-past' to commit f99ada4123de1eadf668d34dac2d726407634549, which is not a descendant of 5fb77cce01f21a03b8f5a9c873067691cf09d057
    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.

Needless to say, `guix-past' is (seemingly) defined nowhere on my
system.

    gabriel@silvi ~$ sudo cat /etc/guix/channels.scm
    (list (channel (name (quote guix)) (url "https://git.savannah.gnu.org/git/guix.git") (branch "master") (introduction (make-channel-introduction "9edb3f66fd807b096b48283debdcddccfea34bad" (openpgp-fingerprint "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))

Any ideas where this is coming from and/or how i can work around this
issue?  Or where /else/ i could look.  Thanks for any input!

gabber

Re: Unable to get rid of guix-past (and unable to pull)

[James Smith]

Gabriel Wicki <gabriel@erlikon.ch> writes:

> Howdy!
>
> So, mysterious things seem to happen on my machines - yes, that's right,
> i managed to reproduce the following behaviour.  But see yourself:
>
> Guix pull fails (has guix-past been rebased or force-pushed?)
>
>     gabriel@silvi ~$ guix pull
>     Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
>     Updating channel 'gabber' from Git repository at 'https://git.sr.ht/~gabber/gabber-channel'...
>     Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'...
>     Updating channel 'guix-gaming-games' from Git repository at 'https://gitlab.com/guix-gaming-channels/games.git'...
>     Updating channel 'guix-past' from Git repository at 'https://codeberg.org/guix-science/guix-past.git'...
>     guix pull: error: aborting update of channel 'guix-past' to commit f99ada4123de1eadf668d34dac2d726407634549, which is not a descendant of 5fb77cce01f21a03b8f5a9c873067691cf09d057
>     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.
>
> So i investigate:
>
>     gabriel@silvi ~$ guix describe
>     Generation 21	Oct 23 2024 22:56:15	(current)
>     guix 5f4ba1c
>         repository URL: https://git.savannah.gnu.org/git/guix.git
>         branch: master
>         commit: 5f4ba1c09fa0fba1ed230b80bae9f6a4d0d2d303
>     gabber 20f7905
>         repository URL: https://git.sr.ht/~gabber/gabber-channel
>         branch: trunk
>         commit: 20f7905206826e0d110cab57974b3426683ac814
>     nonguix ad966c3
>         repository URL: https://gitlab.com/nonguix/nonguix
>         branch: master
>         commit: ad966c3844385e8f7b60b0dc915f92a1eba47e09
>     guix-gaming-games 5762eda
>         repository URL: https://gitlab.com/guix-gaming-channels/games.git
>         branch: master
>         commit: 5762eda50230715555da5beb0f4d06a5456bb5c0
>     guix-past 5fb77cc
>         repository URL: https://gitlab.inria.fr/guix-hpc/guix-past
>         branch: master
>         commit: 5fb77cce01f21a03b8f5a9c873067691cf09d057
>
> Weirdly enough, guix-past is not im my channels configuration (which is
> managed by guix home):
>
>     gabriel@silvi ~$ cat .config/guix/channels.scm
>     (list (channel
>             (name 'guix)
>             (url "https://git.savannah.gnu.org/git/guix.git")
>             (branch "master")
>             (introduction
>             (make-channel-introduction
>                 "9edb3f66fd807b096b48283debdcddccfea34bad"
>                 (openpgp-fingerprint
>                 "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA"))))
>         (channel
>             (name 'gabber)
>             (url "https://git.sr.ht/~gabber/gabber-channel")
>             (branch "trunk"))
>         (channel
>             (name 'nonguix)
>             (url "https://gitlab.com/nonguix/nonguix")
>             (branch "master")
>             (introduction
>             (make-channel-introduction
>                 "897c1a470da759236cc11798f4e0a5f7d4d59fbc"
>                 (openpgp-fingerprint
>                 "2A39 3FFF 68F4 EF7A 3D29  12AF 6F51 20A0 22FB B2D5"))))
>         (channel
>             (name 'guix-gaming-games)
>             (url "https://gitlab.com/guix-gaming-channels/games.git")
>             (branch "master")
>             (introduction
>             (make-channel-introduction
>                 "c23d64f1b8cc086659f8781b27ab6c7314c5cca5"
>                 (openpgp-fingerprint
>                 "50F3 3E2E 5B0C 3D90 0424  ABE8 9BDC F497 A4BB CC7F")))))
>
> And even pulling with explicitly stating the channels file (which i
> thought would **only** pull the channels described in said file) fails
> pulling guix-past -- which is *not* part of that very file:
>
>     gabriel@silvi ~$ guix pull --channels=!$
>     guix pull --channels=.config/guix/channels.scm
>     Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
>     Updating channel 'gabber' from Git repository at 'https://git.sr.ht/~gabber/gabber-channel'...
>     Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'...
>     Updating channel 'guix-gaming-games' from Git repository at 'https://gitlab.com/guix-gaming-channels/games.git'...
>     Updating channel 'guix-past' from Git repository at 'https://codeberg.org/guix-science/guix-past.git'...
>     guix pull: error: aborting update of channel 'guix-past' to commit f99ada4123de1eadf668d34dac2d726407634549, which is not a descendant of 5fb77cce01f21a03b8f5a9c873067691cf09d057
>     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.
>
> Needless to say, `guix-past' is (seemingly) defined nowhere on my
> system.
>
>     gabriel@silvi ~$ sudo cat /etc/guix/channels.scm
>     (list (channel (name (quote guix)) (url "https://git.savannah.gnu.org/git/guix.git") (branch "master") (introduction (make-channel-introduction "9edb3f66fd807b096b48283debdcddccfea34bad" (openpgp-fingerprint "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))
>
> Any ideas where this is coming from and/or how i can work around this
> issue?  Or where /else/ i could look.  Thanks for any input!
>
> gabber

Hi Gabriel,

Just like packages can depend on other packages, so Guix channels can
depend on other channels. A channel can define dependencies in the
.guix-channel file at the root of each repository. Checking through each
channel, I found that guix-gaming-games depends on guix-past. As for
getting around it, you could try running "guix pull --roll-back" and try
pulling again.

Hope that helps,

James

Re: Unable to get rid of guix-past (and unable to pull)

[Simon Tournier]

Hi,

On Thu, 28 Nov 2024 at 00:28, Gabriel Wicki <gabriel@erlikon.ch> wrote:

>     guix pull: error: aborting update of channel 'guix-past' to commit f99ada4123de1eadf668d34dac2d726407634549, which is not a descendant of 5fb77cce01f21a03b8f5a9c873067691cf09d057

[...]

>     guix-past 5fb77cc
>         repository URL: https://gitlab.inria.fr/guix-hpc/guix-past
>         branch: master
>         commit: 5fb77cce01f21a03b8f5a9c873067691cf09d057

Ouch!  That because Ludo pushed commit [1]
5fb77cce01f21a03b8f5a9c873067691cf09d057 to
https://gitlab.inria.fr/guix-hpc/guix-past but not to
https://codeberg.org/guix-science/guix-past.

In the meantime, you pulled and thus you get this 5fb77cc because it was
still the reference of the old location (inria).  Then you pulled again
but this time using the new location (codeberg).  And bang!

Somehow, that’s a migration typo. :-)  And we cannot do more now it’s
done.

1: https://gitlab.inria.fr/guix-hpc/guix-past/-/commits/master/?ref_type=HEADS

> Needless to say, `guix-past' is (seemingly) defined nowhere on my
> system.

As explained, it is indirectly pulled via guix-gaming-channels [2].

In other words, the scenario reads:

 1. Migration of guix-past from Inria to Codeberg
 2. 5fb77cc pushed to guix-past Inria
 3. guix-gaming-channels had not yet updated their dependency (guix-past)
 4. you pulled, so fetched 5fb77cc from guix-past Inria via the channel
    guix-gaming-channels
 5. guix-gaming-channels updated their dependency reference (guix-past)
 6. you pulled again… Bang!

Well, there is various solutions.  Somehow, you need to clean some cache
to make the authentication passes.  Is it still broken for you?

Cheers,
simon


1: https://gitlab.com/guix-gaming-channels/games/-/blob/34a0e847c1f5a062b4cfa261ee1ff06e1f9f0973/.guix-channel#L15-21

Re: Unable to get rid of guix-past (and unable to pull)

[Gabriel Wicki]

Thanks James and Simon

Rolling back and pulling again did the trick!