Today I have discovered apt pinning, it looked great and I've chosen to use it.
However I am trying to install some package which need libc6 at a version higher than what is available at a stable level and this seems to be blocking my installation.
apt-cache policy libc6
libc6: Installed: 2.13-38+deb7u1 Candidate: 2.13-38+deb7u1 Version table: 2.18-4 0 500 http://ftp.de.debian.org/debian/ testing/main amd64 Packages 600 http://ftp.de.debian.org/debian/ unstable/main amd64 Packages *** 2.13-38+deb7u1 0 990 http://debian.mirrors.something.net/debian/ wheezy/main amd64 Packages 100 /var/lib/dpkg/status
How can I force an installation to propagate upgrades upon dependencies when needed (here version 2.18 would match my dependencies) ?