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

[Diego Nicola Barbato]

Hello Swedebugia,

address@hidden writes:

> 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?

I've got something better.

Steps to reproduce:

Install GuixSD in a VM using the iso image and the attached config.  The
image should be at least 16G (8G is to small for a reconfigure).

Reboot the VM.

Run ‘guix pull --commit=1f51f0’ as root.

Make sure to log out and back in again to avoid bug#33647.

Run ‘guix system reconfigure /etc/config.scm’.

Reboot the VM.

Run ‘guix system roll-back’ as root.

Backtrace ensues.


Greetings

Diego

config.scm
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