[Pkg-varnish-devel] Bug#698577: varnish: prompting due to modified conffiles which were not modified by the user

[Julien Cristau]

On Sun, Jan 20, 2013 at 18:12:54 +0100, Andreas Beckmann wrote:

>   Setting up varnish (3.0.2-2) ...
>   Installing new version of config file /etc/init.d/varnishncsa ...
>   Installing new version of config file /etc/init.d/varnish ...
>   Installing new version of config file /etc/init.d/varnishlog ...
>   Installing new version of config file /etc/varnish/default.vcl ...
>   Installing new version of config file /etc/default/varnishncsa ...
>   
>   Configuration file `/etc/default/varnish'
>    ==> Modified (by you or by a script) since installation.
>    ==> Package distributor has shipped an updated version.
>      What would you like to do about it ?  Your options are:
>       Y or I  : install the package maintainer's version
>       N or O  : keep your currently-installed version
>         D     : show the differences between the versions
>         Z     : start a shell to examine the situation
>    The default action is to keep your current version.
>   *** varnish (Y/I/N/O/D/Z) [default=N] ? dpkg: error processing varnish (--configure):
>    EOF on stdin at conffile prompt
> 
> This was observed on an upgrade from lenny to squeeze to wheezy.
> 
So what happens is when upgrading from lenny, the varnish/squeeze
postinst runs:
upgrade_enable_varnishd() {
    sed -i '/^START=/s/no/yes/g' /etc/default/varnish
}
which thus modifies the conffile, and the upgrade to wheezy barfs on
that.

This is icky, but I'm not sure we should consider this serious.

Cheers,
Julien
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