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Bug#689537: pdnsd: deletes conffiles on package removal (policy 10.7.3): /etc/NetworkManager/dispatcher.d/002_NetMan_pdnsd

On Mon, 22 Oct 2012 00:16:19 +0200, Andreas Beckmann wrote:

> With the prerm script gone this issue is fixed for squeeze->sid upgrades
> (and squeeze->wheezy upgrades once 1.2.8-par-3 migrates to wheezy), but
> the problem (missing conffile) will still exist if the user had any
> version from 1.2.8-par-2, ..., 1.2.8-par-2.3 installed.
> I don't see an easy solution for this ... as
>   old-prerm upgrade new-version
> is the very first step of the upgrade, there is no hacking around this
> by deleting a buggy maintainer script during
>   new-preinst upgrade old-version

Right, when upgrading from one of those versions the file gets
removed. (And not even reinstalling helps, and dpkg-query knows about
the conffile ...)
> Maybe this could work:
> ship another copy of the file in /usr/share and in the postinst do
> if dpkg --compare-versions $upgrade_from ge 1.2.8-par-2~ &&
>    dpkg --compare-versions $upgrade_from lt 1.2.8-par-4~
> then
>   target=/etc/NetworkManager/dispatcher.d/002_NetMan_pdnsd
>   source=/usr/share/.../002_NetMan_pdnsd
>   if [ ! -e $target ]; then
>     echo restoring $target
>     cp $source $target
>   fi
> fi
> but it's only upgrades from pdnsd/testing that are affected

Should work; not sure if it's worth the effort ...


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