GNU bug report logs - #54779
guix home reconfigure throw error after Shepherd updata

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#54779: closed (guix home reconfigure throw error after
 Shepherd updata)
Date: Wed, 20 Apr 2022 22:12:02 +0000

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Your message dated Thu, 21 Apr 2022 00:11:04 +0200
with message-id <874k2nmmmf.fsf <at> gnu.org>
and subject line Re: bug#54779: guix home reconfigure throw error after Shepherd updata
has caused the debbugs.gnu.org bug report #54779,
regarding guix home reconfigure throw error after Shepherd updata
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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54779: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=54779
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Contact help-debbugs <at> gnu.org with problems

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From: Aleksandr Vityazev <avityazev <at> posteo.org>
To: "bug-guix" <bug-guix <at> gnu.org>
Subject: guix home reconfigure throw error after Shepherd updata
Date: Thu, 07 Apr 2022 23:27:31 +0000

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Hi,

guix home reconfigure config.scm [1], throw error and freezes even
ctrl-c doesn't help

Uncaught exception in task:
In fibers.scm
  150:0 9 (_)
In ice-9/boot-9.scm
  1747:15 8 (with-exception-handler #<procedure 7c9c7efe1c60> at ic..>
  ...)
In shepherd.scm
  439:9 7 (_)
In ice-9/boot-9.scm
  1747:15 8 (with-exception-handler #<procedure 7f9c7efe1ba0> at ic..>
  ...)
In ice-9/exceptions.scm:
  406:15 5 (_)
In ice-9/boot-9.scm:
  1752:10 4 (with-exception-handler _ _ #:unwind? _ # _)
In shepherd.scm
 502:23 3 (_)
In srfi/srfi-1.scm:
 586:17 2 (map1 (#<<service> 7f9c80e0df30>))
In ice-9/boot-9.scm:
 1685:16 1 (raise-exception _ #:continuable? _)
 1683:16 0 (raise-exception _ #:continuable? _)
ice-9/boot-9.scm:1683:16 In procedure raise-exception:
Zero values returned to single-valued continuation


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[confgi.scm (text/plain, attachment)]

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--      
Best regards,
Aleksandr Vityazev

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Aleksandr Vityazev <avityazev <at> posteo.org>
Cc: 54779-done <at> debbugs.gnu.org, Nicolas Graves <ngraves <at> ngraves.fr>
Subject: Re: bug#54779: guix home reconfigure throw error after Shepherd updata
Date: Thu, 21 Apr 2022 00:11:04 +0200

Hi,

Aleksandr Vityazev <avityazev <at> posteo.org> skribis:

> guix home reconfigure config.scm [1], throw error and freezes even
> ctrl-c doesn't help

Indeed, this can be reproduced like so:

--8<---------------cut here---------------start------------->8---
$ herd load root /gnu/store/1xx98q22c6ijr0p5pjbq3wnxd5yyxlmy-shepherd.conf
WARNING: Use of `load' in declarative module (#{ g139}#).  Add #:declarative? #f to your define-module invocation.
Uncaught exception in task:
In fibers.scm:
    150:8  9 (_)
In ice-9/boot-9.scm:
  1747:15  8 (with-exception-handler #<procedure 7f52c6b31390 at ic…> …)
In shepherd.scm:
    432:9  7 (_)
In ice-9/boot-9.scm:
  1747:15  6 (with-exception-handler #<procedure 7f52c6b312d0 at ic…> …)
In ice-9/exceptions.scm:
   406:15  5 (_)
In ice-9/boot-9.scm:
  1752:10  4 (with-exception-handler _ _ #:unwind? _ # _)
In shepherd.scm:
   502:23  3 (_)
In srfi/srfi-1.scm:
   586:17  2 (map1 (#<<service> 7f52c8f77f30>))
In ice-9/boot-9.scm:
  1685:16  1 (raise-exception _ #:continuable? _)
  1683:16  0 (raise-exception _ #:continuable? _)
ice-9/boot-9.scm:1683:16: In procedure raise-exception:
Zero values returned to single-valued continuation
--8<---------------cut here---------------end--------------->8---

(‘guix home reconfigure’ invokes the same command as above.)

The problem is that ‘start-in-the-background’ returns zero values, as
indicated above, but shepherd expects user commands to return one value.

So the fix, as you suggest, is to return one value at the end of
shepherd.conf.

You suggested redirecting stdin, which is also a good idea, but for a
different reason.  :-)  Anyway I’ve done both.

  dd2ab92d9d home: shepherd: Redirect input port to /dev/null.
  bc867b2ab0 home: shepherd: "shepherd.conf" returns one value.

Thank you!

Ludo’.

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