X server crashes during 'guix system reconfigure' on mips64el

[Mark H Weaver]

Hi Ludovic,

address@hidden (Ludovic Courtès) writes:

> civodul pushed a commit to branch master
> in repository guix.
>
> commit 3cf319a3f8e23831960a0f1320122cc514188a37
> Author: Ludovic Courtès <address@hidden>
> Date:   Sun Aug 21 19:03:29 2016 +0200
>
>     services: elogind: Provide '%elogind-file-systems' by extension.
>     
>     * gnu/system/file-systems.scm (%base-file-systems): Remove
>     %ELOGIND-FILE-SYSTEMS.
>     * gnu/services/desktop.scm (elogind-service-type): Extend
>     FILE-SYSTEM-SERVICE-TYPE to provide %ELOGIND-FILE-SYSTEMS.

This commit causes a major problem on my Lemote YeeLoong (mips64el)
machine running GuixSD.  I don't know whether it might affect others.

When I run 'guix system reconfigure' to update to a system with this
commit, it unloads the older %elogind-file-system services, which causes
my X server to crash and leave me in text mode with my keyboard in the
wrong mode, so I have to hard reset the machine.

In addition, the 'guix system reconfigure' gets stuck.  (I can see this
because I always run it in a text terminal; I do all my 'root' work
there.)

I've tried it twice, and transcribed (by hand) the last few lines of the
output from 'guix system reconfigure':

First time:

  making '/gnu/store/f0z88r...-system' the current system...
  guix system: unloading service 'file-system-/sys/fs/cgroup/elogind'...
  wlp0s14f5u3: deauthenticating from xx:xx:xx:xx:xx:xx by local choice (Reason: 
3=DEAUTH_LEAVING)

Second time:

  making '/gnu/store/f0z88r...-system' the current system...
  guix system: unloading service 'file-system-/run/systemd'...

I'm not sure if it's relevant, but I don't have 'elogin-service' on my
YeeLoong.  I can't run it there because it depends on 'mozjs' which
fails to build on mips64el.

       Mark