backtrace when building os

[Jan Synacek <jsynacek@redhat.com>]

Hello,

I'm not sure if this is a bug or I'm just not using things properly.

I ran 'guix pull' a few minutes ago, followed by:

$ cat guix-os.scm
(use-modules (gnu bootloader)
	     (gnu bootloader grub)
	     (gnu system file-systems))

(operating-system
  (host-name "jsynacek-guix-os")
  (timezone "Europe/Prague")
  (locale "en_US.utf8")
  (bootloader
    (bootloader-configuration
      (bootloader grub-efi-bootloader)
      (target "/dev/sdx")))
  (file-systems
    (list (file-system (mount-point "/home")
                       (device "/dev/sda33")
                       (type "ext4")))))

$ guix system build guix-os.scm 
substitute: /gnu/store/29jhbbg1hf557x8j53f9sxd9imlmf02a-bash-minimal-5.0.7/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.utf8)
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
50.0 MB will be downloaded:
   /gnu/store/g56i8savnfr7981fil03idkjl0syj29d-linux-libre-5.4.31
substituting /gnu/store/g56i8savnfr7981fil03idkjl0syj29d-linux-libre-5.4.31...
/gnu/store/29jhbbg1hf557x8j53f9sxd9imlmf02a-bash-minimal-5.0.7/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.utf8)
downloading from https://ci.guix.gnu.org/nar/lzip/g56i8savnfr7981fil03idkjl0syj29d-linux-libre-5.4.31...
 linux-libre-5.4.31  48.6MiB                  2.3MiB/s 00:22 [##################] 100.0%

Backtrace:
In ice-9/boot-9.scm:
  1736:10  4 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
In unknown file:
           3 (apply-smob/0 #<thunk 7fe0bbf9e3a0>)
In ice-9/boot-9.scm:
    718:2  2 (call-with-prompt _ _ #<procedure default-prompt-handler (k proc)>)
In ice-9/eval.scm:
    619:8  1 (_ #(#(#<directory (guile-user) 7fe0bbc16f00>)))
In guix/ui.scm:
  1936:12  0 (run-guix-command _ . _)

guix/ui.scm:1936:12: In procedure run-guix-command:
In procedure struct-vtable: Wrong type argument in position 1 (expecting struct): #f

Regards,
-- 
Jan Synacek
Software Engineer, Red Hat