On Sat, 28 Jan 2017 09:58:30 +0100
Joachim Fahrner <jf@???> wrote:

> Hi,
>
> I added Devuan backports and now a lot of packages were upgraded to
> the new bpo version. Normally Debian backports should have a priority
> of 100 and should not automatically upgrade. What is wrong here?
>
> Is there an easy way to downgrade packages to the stable version?


Hallo Joachim,

to avoid accidents like this, I have the following lines in my apt
preferences:


florian@nulldevice:~$ cat /etc/apt/preferences.d/avoid-otherrepos

Package: *
Pin: release a=jessie-backports
Pin-Priority: 150

Package: *
Pin: origin "www.deb-multimedia.org"
Pin-Priority: 75


See apt_preferences(5), section "How APT Interprets Priorities" for
details.


libre Grüße,

Florian