[bug#42849] [PATCH 3/3] installer: Run the installation inside a container.

["Ludovic Courtès" <ludo@gnu.org>]

Hey,

Mathieu Othacehe <othacehe@gnu.org> skribis:

> Sounds fine! I added a "fork+exec-command/container" in (gnu build
> shepherd) module, that uses "container-excursion" to enter the
> namespaces of the process passed as argument.

There’s a catch that I just discovered as I reconfigured berlin:

--8<---------------cut here---------------start------------->8---
root@berlin ~/maintenance/hydra# herd restart guix-daemon
Service cuirass-web has been stopped. 
Service cuirass has been stopped.
Service guix-publish has been stopped.
Service guix-daemon has been stopped. 
herd: exception caught while executing 'start' on service 'guix-daemon':
Unbound variable: fork+exec-command/container
root@berlin ~/maintenance/hydra# herd restart guix-daemon
Service guix-daemon is not running.   
herd: exception caught while executing 'start' on service 'guix-daemon':
Unbound variable: fork+exec-command/container
--8<---------------cut here---------------end--------------->8---

The workaround I found, which works nicely, is to run:

  herd eval root "(reload-module (resolve-module '(gnu build shepherd)))"

and then:

  herd restart guix-daemon
  herd restart guix-publish
  …

Not sure if there’s anything we can or should do.  It’s probably not too
common to restart guix-daemon after an upgrade, though.

Ludo’.