Re: preinst: get new pkg version to check for downgrade
2014-12-25 0:59 GMT+02:00 Guillem Jover <firstname.lastname@example.org>:
> On Wed, 2014-12-24 at 19:43:47 +0200, Andrey Utkin wrote:
>> When preinst is called with $1 = "upgrade", $2 is set with old
>> version. How should I get programmatically the new version (the one
>> being currently installed), to compare with "dpkg --compare-versions".
> The new version is always implicitly known at package build time, so
> if you really need to have a varying version you can replace it then.
> But usually you compare against a known version that introduced
> something and then you have logic like:
> case "$1" in
> if dpkg --compare-versions "$2" lt KNOWN-VERSION; then
> : # do some actions, or deny or accept the downgrade
Uh, ok. That is a solution. I just thought it is possible to retrieve
this new version somehow, without preprocessing a preinst script from