GNU bug report logs - #30706
'guix system reconfigure' can fail to load new system services

Previous Next

Full log

View this message in rfc822 format

From: ludo <at> gnu.org (Ludovic Courtès)
To: Andreas Enge <andreas <at> enge.fr>
Cc: guix-devel <at> gnu.org, Danny Milosavljevic <dannym <at> scratchpost.org>, 30706 <at> debbugs.gnu.org
Subject: bug#30706: Nginx service fails
Date: Mon, 05 Mar 2018 11:09:34 +0100

Andreas Enge <andreas <at> enge.fr> skribis:

> guix system: loading new services: user-homes term-auto nginx...
> shepherd: Evaluating user expression (register-services (primitive-load "/gnu/st?") ?).
> guix system: error: exception caught while executing 'eval' on service 'root':
> find-long-options: unbound variable

The problem we have here is that the agetty service expects
‘find-long-options’ from linux-boot.scm, and it expects it at the top
level.

So what happens above is that we evaluate in PID 1 code like:

  (make <service>
    ;; …
    #:start (let ((tty … (find-long-options …) …))
               …))

If you run this on an “old” GuixSD, ‘find-long-options’ is undefined.

Thus the whole (register-services …) expression fails to evaluate, and
we end up with some of the services missing.

Conclusions:

  1. ‘guix system reconfigure’ should probably register services one by
     one so that if one of the service expressions is erroneous, we
     don’t bork everything.  See ‘upgrade-shepherd-services’.

  2. IWBN to delay execution of this whole default-tty thing to the
     #:start method.  Ideas, Danny?

In general we should do as little as possible at the top level in the
Shepherd config file.

Ludo’.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.