bug#57229: ‘guix system image’ forces commit authentication?

[Tobias Geerinckx-Rice via Bug reports for GNU Guix <bug-guix@gnu.org>]

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Hi all,

There doesn't seem to be a way to opt out of commit authentication 
with ‘./pre-inst-env guix system image’.  Am I missing (a 
reasonable!) one?

I'd expect all commands that authenticate commits to honour 
‘--disable-authentication’.

--8<---------------cut here---------------start------------->8---
λ ./pre-inst-env guix system image -t iso9660 
gnu/system/install.scm
Updating channel 'guix' from Git repository at 
'/home/nckx/guix/'...
Backtrace:
In guix/gexp.scm:
   898:13 19 (_ _)
In guix/store.scm:
   1996:8 18 (_ _)
In guix/gexp.scm:
   300:22 17 (_ _)
In guix/store.scm:
   1996:8 16 (_ _)
In guix/gexp.scm:
   300:22 15 (_ _)
In guix/store.scm:
   1996:8 14 (_ _)
In guix/packages.scm:
  1876:11 13 (_ _)
In guix/build-system/channel.scm:
     42:2 12 (_ _)
In guix/store.scm:
  2040:38 11 (_ #<store-connection 256.99 7bdb3437a460>)
In guix/channels.scm:
    523:7 10 (loop _ _)
In guix/combinators.scm:
    48:26  9 (fold2 #<procedure 7bdb32ca8120 at 
    guix/channels.scm:523:13 (channel previous-channels 
    instances)> () () (#<<channel> …>))
In guix/channels.scm:
   533:29  8 (_ #<<channel> name: guix url: "/home/nckx/guix/" 
   branch: "master" commit: 
   "43513c4e93740e2a9dc4ca138f8b34434f66e170" …> …)
   421:12  7 (latest-channel-instance #<store-connection 256.99 
   7bdb3437a460> _ #:patches _ #:starting-commit _ #:authenticate? 
   _ # _)
In guix/git.scm:
    299:7  6 (call-with-repository _ #<procedure 7bdb32ca8060 at 
    guix/channels.scm:384:2 (repository)>)
In guix/git-authenticate.scm:
    404:4  5 (authenticate-repository #<git-repository 69e6c0> _ 
    #vu8(187 176 45 223 44 234 246 168 13 29 230 67 162 160 109 
    242 # …) …)
   263:20  4 (load-keyring-from-reference #<git-repository 69e6c0> 
   _)
In git/branch.scm:
    101:8  3 (_ _ _ _)
In git/bindings.scm:
     77:2  2 (raise-git-error _)
In ice-9/boot-9.scm:
  1685:16  1 (raise-exception _ #:continuable? _)
  1685:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1685:16: In procedure raise-exception:
Git error: cannot locate remote-tracking branch 'origin/keyring'

λ ./pre-inst-env guix system image -t iso9660 
gnu/system/install.scm --disable-authentication
guix system: error: disable-authentication: unrecognized option
--8<---------------cut here---------------end--------------->8---

Kind regards,

T G-R

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