bug#47164: Cuirass specification complains about missing guix channel when a non-guix channel gets a new commit alone

[david larsson]

On 2021-03-25 14:47, Mathieu Othacehe wrote:
> Hello David,
>
> >       (build '(manifests . ((my-config . "manifests/user1.scm"))))
> I have changed the manifest argument format recently. This should now
> be:
>
> --8<---------------cut here---------------start------------->8---
>   (build '(manifests "manifests/user"))
> --8<---------------cut here---------------end--------------->8---
>
> >       (channels
> >        (list (channel
> >               (name 'guix)
> >               (url "https://git.savannah.gnu.org/git/guix.git";)
> >               (branch  "master"))
> You should prefer using %default-guix-channel here.
>
> >              (channel
> >               (name 'my-config)
> >               (url "file:///home/cuirass/my-guixsd-config.sh")
> >               ;;(url
> >                 
> > "https://github.com/methuselah-0/my-guixsd-config.sh.git";)
> The problem is that this repository is not really a channel. When
> Cuirass tries to build this channel, it tries to build all the scheme
> file as if they were module definitions and fails.
>
> This works for me:
>
> --8<---------------cut here---------------start------------->8---
> (list
>  (specification
>   (name "my-pkgs")
>   (build '(manifests "manifests/user"))
>   (channels
>    (list %default-guix-channel
>          (channel
>           (name 'my-config)
>           (url "https://gitlab.com/mothacehe/test-channel.git";))
>          (channel
>           (name 'my-guix-packages)
>           (url 
> "https://github.com/methuselah-0/my-guix-packages.git";))))))
> --8<---------------cut here---------------end--------------->8---
>
> where test-channel is a dummy channel repository that contains your
> manifest file.  I removed the .scm extension so that Cuirass does not
> try to build it, but I this is not an acceptable solution in the long
> term.
>
> We would need to find a way to tell Cuirass not to build this channel 
> or
> something like that.
>
> Thanks,
>
> Mathieu
Hi,
Thanks. I forked ur test-channel and updated my specs accordingly and it 
only works the first evaluation, until I push a new commit to the config 
channel, then Im getting this:
Backtrace:
In ice-9/boot-9.scm:
  1736:10 15 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
          14 (apply-smob/0 #<thunk 7f7b52185ec0>)
In ice-9/boot-9.scm:
    718:2 13 (call-with-prompt _ _ #<procedure default-prompt-handle?>)
In ice-9/eval.scm:
    619:8 12 (_ #(#(#<directory (guile-user) 7f7b5217ec80>)))
In cuirass/ui.scm:
   104:10 11 (run-cuirass-command _ . _)
In ice-9/boot-9.scm:
    152:2 10 (with-fluid* _ _ _)
    152:2  9 (with-fluid* _ _ _)
In ice-9/eval.scm:
   293:34  8 (_ #(#(#(#(#(#(#(#<directory (cuiras?> ?)) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
  1736:10  7 (with-exception-handler _ _ #:unwind? _ # _)
In guix/store.scm:
   636:37  6 (thunk)
In ice-9/eval.scm:
    159:9  5 (_ #(#(#<directory (cuirass scripts evaluate) 7f7?> ?) ?))
   196:35  4 (_ #(#(#<directory (cuirass scripts evaluate) 7f7?> ?) ?))
In guix/channels.scm:
   911:32  3 (channel-instances->derivation _)
   871:36  2 (channel-instances->manifest (#<<channel-instance> cha?>))
    759:6  1 (channel-instance-derivations (#<<channel-instance> ch?>))
In ice-9/boot-9.scm:
  1669:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1669:16: In procedure raise-exception:
ERROR:
  1. &message: "'guix' channel is lacking"
  2. &fix-hint: "Make sure your list of channels\ncontains one channel 
named @code{guix} providing the core of Guix."
  3. &error-location: #<<location> file: "guix/channels.scm" line: 557 
column: 18>


Best regards,
David