I'v installed xfce 4.12 on debian jessie from testing by adding the testing repo in


File content:

deb     http://ftp.us.debian.org/debian/    testing main contrib non-free
deb-src http://ftp.us.debian.org/debian/    testing main contrib non-free

I have tried to pin the package to experimental with /etc/apt/preferences.d/testing.pref containing:

Package: xfce4
Pin: release a=testing
Pin-Priority: 750

Problem is that running apt-get update && apt-get upgrade I am getting updates from the experimental repo for all installed packages whereas I would like to achieve ugrading xfce from testing and all the rest from jessie stable.

Seeking help to solve this as I do not fully understand the pinning system.

  • Just a reminder: While it seems Debian people do this sort of thing all the time, it is not safe and can result in a completely unrecoverable system. – Michael Hampton May 21 '15 at 17:51
  • Hi I do know this. I am doing some testing on xfce that is why I'm trying to achieve this – Fabrizio Mazzoni May 21 '15 at 17:51
  • Or do you think the best option would be to upgrade to stretch which includes xfce 4.12? – Fabrizio Mazzoni May 21 '15 at 17:52
  • Well, I wouldn't use Debian at all, but if I did it would be a complete stretch installation (or sid, or whatever). Not packages mixed from different releases. – Michael Hampton May 21 '15 at 17:53
  • Good point, will think about it. – Fabrizio Mazzoni May 21 '15 at 17:54

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