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

[N. Y.]

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