bug#33623: Backtrace when running `guix system roll-back'

[swedebugia]

On 2018-12-05 12:36, Diego Nicola Barbato wrote:
> Hello Guix,
> 
> When I run ‘guix system roll-back’ I get the following backtrace:
> 
> --8<---------------cut here---------------start------------->8---
> address@hidden ~# guix system roll-back
> Backtrace:
>           10 (primitive-load "/root/.config/guix/current/bin/guix")
> In guix/ui.scm:
>   1603:12  9 (run-guix-command _ . _)
> In ice-9/boot-9.scm:
>     829:9  8 (catch srfi-34 #<procedure 341ea60 at guix/ui.scm:615:…> …)
>     829:9  7 (catch system-error #<procedure 341eb00 at guix/script…> …)
> In guix/scripts/system.scm:
>    1268:8  6 (_)
> In guix/status.scm:
>     615:4  5 (call-with-status-report _ _)
> In guix/scripts/system.scm:
>    1208:9  4 (process-command _ _ _)
>    469:10  3 (switch-to-system-generation #<build-daemon 256.99 1ec…> …)
> In guix/store.scm:
>   1659:24  2 (run-with-store _ _ #:guile-for-build _ #:system _ # _)
> In guix/scripts/system.scm:
>     499:6  1 (_ _)
> In unknown file:
>            0 (_ #<build-daemon 256.99 1ec03c0>)
> 
> ERROR: Wrong type to apply: #<<computed-file> name: "grub.cfg" gexp:
> #<gexp  3971ab0> guile: #f options: (#:local-build? #t)>
> --8<---------------cut here---------------end--------------->8---
> 
> I run GuixSD (commit: 1f51f0d975d95a2ba645193cf43d0a294d952e83) on an
> x86_64 machine.

Interesting. Could you provide a config.scm to help us reproduce the
issue?

-- 
Cheers 
Swedebugia