bug#42161: Confusing '' error message

[Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>]

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On Thu, 02 Jul 2020 09:48:26 +0200
Ludovic Courtès <ludo@gnu.org> wrote:

> Hello,
Hi,

> If you’re having troubles building your system, I’d try building with
> ‘-v3’ (verbose mode) for example, or ‘--on-error=debug’ if the problem
> is in your ‘system.scm’ file.

Here's with -v3
> # guix system -v3 --no-bootloader init system.scm /srv/distros/guix/
> guile: warning: failed to install locale
> Backtrace:
>            1 (primitive-load "/root/.config/guix/current/bin/guix")
> In guix/ui.scm:
>   1949:12  0 (run-guix-command _ . _)
> 
> guix/ui.scm:1949:12: In procedure run-guix-command:
> In procedure struct-vtable: Wrong type argument in position 1
> (expecting struct): #f

And with -v3 and --on-error=debug:
> # guix system  --on-error=debug -v3 --no-bootloader init system.scm
> /srv/distros/guix/ guile: warning: failed to install locale
> Backtrace:
>            1 (primitive-load "/root/.config/guix/current/bin/guix")
> In guix/ui.scm:
>   1949:12  0 (run-guix-command _ . _)
> 
> guix/ui.scm:1949:12: In procedure run-guix-command:
> In procedure struct-vtable: Wrong type argument in position 1
> (expecting struct): #f

In both cases it doesn't point to my system.scm, so I'm trying to start
suspecting that the issue is somewhere else. Though you need to keep in
mind that I just read the Scheme crashcourse from the GuiX cookbook
days ago, so I'm really far from being fluent in Scheme.

> > so I'm probably doing something wrong here as I'm probably not
> > supposed to abuse guix system init to create chroots for lxc.
> 
> I’m not familiar with lxc, but it looks like it should work.
In a nutshell I'm trying to install GuiX:
- without a bootloader
- in a directory that isn't the root of a filesystem

I've tried also on /mnt which is backed by a partition:
> /dev/sdb4 on /mnt type ext4 (rw,relatime)

And again I've the same error:
> guix system  --on-error=debug -v3 --no-bootloader init system.scm
> /mnt/ guile: warning: failed to install locale
> Backtrace:
>            1 (primitive-load "/root/.config/guix/current/bin/guix")
> In guix/ui.scm:
>   1949:12  0 (run-guix-command _ . _)
> 
> guix/ui.scm:1949:12: In procedure run-guix-command:
> In procedure struct-vtable: Wrong type argument in position 1
> (expecting struct): #f

Is that part of my system.scm really correct:
> (file-systems %base-file-systems)

I hope that I'm not polluting bugreports for issues that I'm responsible
of, but I don't have enough knowledge to know that in advance, and I
was advised to bugreport on #guix IRC channel.

Denis.

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