bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[N. Y.]

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Hi all,

I am suddenly having errors with guix pull while pulling my own custom
channels, after upgrading guix yesterday. My custom channels has not
changed since early April. I am sure I was able to pull from my custom
channels when I last upgraded around early June.

The error is "channel dependency has an invalid introduction field," but
the introduction fields of my custom channels have the same form as those I
use for GNU guix and nonguix channels which I can pull without errors; and
the channel introductions and GPG fingerprints are unchanged from the last
time I was able to pull successfully (I have the channels.scm file under
version control).

There are two private channels. Including either of them are sufficient to
replicate the error; at least one is necessary to replicate the error.

Command line output:

ning@bluecoral ~/roamdb/notes/tasks$ guix pull
Updating channel 'guix' from Git repository at '
https://git.savannah.gnu.org/git/guix.git'...
Updating channel 'nonguix' from Git repository at '
https://gitlab.com/nonguix/nonguix'...
Updating channel 'ninguix' from Git repository at '
https://github.com/ning-y/ninguix'...
/home/ning/.cache/guix/checkouts/y6rzf466if75ebhoqonk2dqs6ac5d75tvkvziqptmqvawztuphda/.guix-channel:10:4:
error: channel dependency has an invalid introduction field

ning@bluecoral ~/roamdb/notes/tasks$ guix --version
guix (GNU Guix) b94cbbbce70f59b795526a0ed305facf041e6faa
Copyright (C) 2023 the Guix authors
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

ning@bluecoral ~/roamdb/notes/tasks$ 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 '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 'ninguix)
        (url "https://github.com/ning-y/ninguix")
        (branch "main")
        (introduction
          (make-channel-introduction
            "3f7eb8b5064445d72649b1b27f714b86f3946a9a"
            (openpgp-fingerprint
              "4523 A758 035C 5177 7A8F  1E1F 2CB0 E8CD 7035 5FB7"))))
      (channel
        (name 'ninguix-private)
        (url "git@github.com:ning-y/ninguix-private.git")
        (branch "main")
        (introduction
          (make-channel-introduction
            "01f91f7dba5a4949a0719e0ff0e85bb8b0050128"
            (openpgp-fingerprint
              "4523 A758 035C 5177 7A8F  1E1F 2CB0 E8CD 7035 5FB7")))))

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bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[Simon Tournier]

Hi,

On Wed, 14 Jun 2023 at 01:56, "N. Y." <ningyuan.sg@gmail.com> wrote:

> Updating channel 'ninguix' from Git repository at '
> https://github.com/ning-y/ninguix'...
> /home/ning/.cache/guix/checkouts/y6rzf466if75ebhoqonk2dqs6ac5d75tvkvziqptmqvawztuphda/.guix-channel:10:4:
> error: channel dependency has an invalid introduction field

[...]

>       (channel
>         (name 'ninguix)
>         (url "https://github.com/ning-y/ninguix")
>         (branch "main")
>         (introduction
>           (make-channel-introduction
>             "3f7eb8b5064445d72649b1b27f714b86f3946a9a"
>             (openpgp-fingerprint
>               "4523 A758 035C 5177 7A8F  1E1F 2CB0 E8CD 7035 5FB7"))))

The branch ’keyring’ seems empty, is it expected?  I mean the manual
reads:

        Additionally, your channel must provide all the OpenPGP keys
        that were ever mentioned in .guix-authorizations, stored as .key
        files, which can be either binary or “ASCII-armored”. By
        default, those .key files are searched for in the branch named
        keyring but you can specify a different branch name in
        .guix-channel like so:

        https://guix.gnu.org/manual/devel/en/guix.html#Specifying-Channel-Authorizations

Cheers,
simon

bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[N. Y.]

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Hi Simon,

Thanks for taking a look! The keyring branch doesn't seem empty on my end,
though. https://github.com/ning-y/ninguix/tree/keyring

Maybe it looks empty because it is an orphan branch? I always had it as an
orphan branch though (that part never changed) and it had worked before.

On Tue, Jun 20, 2023, 00:36 Simon Tournier <zimon.toutoune@gmail.com> wrote:

> Hi,
>
> On Wed, 14 Jun 2023 at 01:56, "N. Y." <ningyuan.sg@gmail.com> wrote:
>
> > Updating channel 'ninguix' from Git repository at '
> > https://github.com/ning-y/ninguix'...
> >
> /home/ning/.cache/guix/checkouts/y6rzf466if75ebhoqonk2dqs6ac5d75tvkvziqptmqvawztuphda/.guix-channel:10:4:
> > error: channel dependency has an invalid introduction field
>
> [...]
>
> >       (channel
> >         (name 'ninguix)
> >         (url "https://github.com/ning-y/ninguix")
> >         (branch "main")
> >         (introduction
> >           (make-channel-introduction
> >             "3f7eb8b5064445d72649b1b27f714b86f3946a9a"
> >             (openpgp-fingerprint
> >               "4523 A758 035C 5177 7A8F  1E1F 2CB0 E8CD 7035 5FB7"))))
>
> The branch ’keyring’ seems empty, is it expected?  I mean the manual
> reads:
>
>         Additionally, your channel must provide all the OpenPGP keys
>         that were ever mentioned in .guix-authorizations, stored as .key
>         files, which can be either binary or “ASCII-armored”. By
>         default, those .key files are searched for in the branch named
>         keyring but you can specify a different branch name in
>         .guix-channel like so:
>
>
> https://guix.gnu.org/manual/devel/en/guix.html#Specifying-Channel-Authorizations
>
> Cheers,
> simon
>

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bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[N. Y.]

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I was able to pull my custom channels without error after pinning the GNU
Guix repository (https://git.savannah.gnu.org/git/guix.git) to commit
f2e98587 (21 May). The Guix CLI version for this commit was version
d884fc9e2efecfba09af4694f5a13ad7fc6f704f.

(channel
        (name 'guix)
        (url "https://git.savannah.gnu.org/git/guix.git")
        ; (branch "master")
        (commit "f2e98587ec72b5f5c2ec79956ced129350396bab")
        (introduction
          (make-channel-introduction
            "9edb3f66fd807b096b48283debdcddccfea34bad"
            (openpgp-fingerprint
              "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA"))))

ning@bluecoral ~/repos/guix$ guix --version
guix (GNU Guix) d884fc9e2efecfba09af4694f5a13ad7fc6f704f
Copyright (C) 2023 the Guix authors
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

On Mon, Jun 19, 2023 at 5:21 PM N. Y. <ningyuan.sg@gmail.com> wrote:

> Hi Simon,
>
> Thanks for taking a look! The keyring branch doesn't seem empty on my end,
> though. https://github.com/ning-y/ninguix/tree/keyring
>
> Maybe it looks empty because it is an orphan branch? I always had it as an
> orphan branch though (that part never changed) and it had worked before.
>
> On Tue, Jun 20, 2023, 00:36 Simon Tournier <zimon.toutoune@gmail.com>
> wrote:
>
>> Hi,
>>
>> On Wed, 14 Jun 2023 at 01:56, "N. Y." <ningyuan.sg@gmail.com> wrote:
>>
>> > Updating channel 'ninguix' from Git repository at '
>> > https://github.com/ning-y/ninguix'...
>> >
>> /home/ning/.cache/guix/checkouts/y6rzf466if75ebhoqonk2dqs6ac5d75tvkvziqptmqvawztuphda/.guix-channel:10:4:
>> > error: channel dependency has an invalid introduction field
>>
>> [...]
>>
>> >       (channel
>> >         (name 'ninguix)
>> >         (url "https://github.com/ning-y/ninguix")
>> >         (branch "main")
>> >         (introduction
>> >           (make-channel-introduction
>> >             "3f7eb8b5064445d72649b1b27f714b86f3946a9a"
>> >             (openpgp-fingerprint
>> >               "4523 A758 035C 5177 7A8F  1E1F 2CB0 E8CD 7035 5FB7"))))
>>
>> The branch ’keyring’ seems empty, is it expected?  I mean the manual
>> reads:
>>
>>         Additionally, your channel must provide all the OpenPGP keys
>>         that were ever mentioned in .guix-authorizations, stored as .key
>>         files, which can be either binary or “ASCII-armored”. By
>>         default, those .key files are searched for in the branch named
>>         keyring but you can specify a different branch name in
>>         .guix-channel like so:
>>
>>
>> https://guix.gnu.org/manual/devel/en/guix.html#Specifying-Channel-Authorizations
>>
>> Cheers,
>> simon
>>
>

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bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[Josselin Poiret via Bug reports for GNU Guix]

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Hi Ning,

"N. Y." <ningyuan.sg@gmail.com> writes:

> The error is "channel dependency has an invalid introduction field," but
> the introduction fields of my custom channels have the same form as those I
> use for GNU guix and nonguix channels which I can pull without errors; and
> the channel introductions and GPG fingerprints are unchanged from the last
> time I was able to pull successfully (I have the channels.scm file under
> version control).

I've purposefully added this new error to warn users that their
.guix-channel's introduction forms were erroneous.  Previously, they
were silently being dropped.  The formats in a channels.scm file and in
the .guix-channel file are *not* the same!  Please see "(guix) Declaring
Channel Dependencies" for an example of the format.

Best,
-- 
Josselin Poiret

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bug#64059: Sudden unexplained error during guix pull: "channel dependency has an invalid introduction field"

[N. Y.]

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Hi Josselin,

Thank you so much for your help! Indeed, the .channels.scm files of my
custom channels had invalid introduction fields. That's on me --- I
should've read the error message more carefully!

Best regards,
Ning

On Tue, Jun 20, 2023 at 9:19 AM Josselin Poiret <dev@jpoiret.xyz> wrote:

> Hi Ning,
>
> "N. Y." <ningyuan.sg@gmail.com> writes:
>
> > The error is "channel dependency has an invalid introduction field," but
> > the introduction fields of my custom channels have the same form as
> those I
> > use for GNU guix and nonguix channels which I can pull without errors;
> and
> > the channel introductions and GPG fingerprints are unchanged from the
> last
> > time I was able to pull successfully (I have the channels.scm file under
> > version control).
>
> I've purposefully added this new error to warn users that their
> .guix-channel's introduction forms were erroneous.  Previously, they
> were silently being dropped.  The formats in a channels.scm file and in
> the .guix-channel file are *not* the same!  Please see "(guix) Declaring
> Channel Dependencies" for an example of the format.
>
> Best,
> --
> Josselin Poiret
>

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