[Freedombox-discuss] How do we handle package upgrades on the Freedombox?

Jonas Smedegaard dr at jones.dk
Thu Apr 17 09:23:38 UTC 2014

Quoting Petter Reinholdtsen (2014-04-17 08:20:22)
> [James Valleroy]
> > I think we can use dpkg-reconfigure without the interactive frontend:
> >
> > echo "jwchat jwchat/ApacheServerName string $hostname" | debconf-set-selections
> > DEBIAN_FRONTEND=noninteractive dpkg-reconfigure jwchat
> >
> > Do you see any issues with this approach?
> [Jonas Smedegaard]
> > Well, if it works then maybe it will keep working.
> > 
> > I just worry that manpage seems to describe a different intent.
> If that work, jwchat is broken, as the setting on disk is supposed to 
> override the debconf value and preseeding like that is only supposed 
> to work for the first time installation.  In other word, if this work 
> then jwchat is broken and should be changed to make sure it do not 
> work.  I even believe such behaviour is RC as it is against Debian 
> policy (10.7.3 Behavior) to behave like this.
> For configuration changes like the one above, the debconf frontend 
> need to ignore debconf SET calls done by jwchat and provide its own 
> answer (the new hostname) no matter what the package read from disk. I 
> am not aware of anything implementing such feature at the moment, and 
> not quite sure it will work.

Ahh, now I realize what your point is: Declaring and applying must be 
done together - so as to distinguish between stale answers (which must 
not take precedence over package data) and current explicitly seeded 
answers (which should take precedence).


 - Jonas

 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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