The script should be run on the active puppetmaster (volatile master) when a new Debian point release is released.
A stub of the script is available in /tmp/jessie_installer.sh and also on install1002 in faidon's home.
The script should accept a parameter with the distro name and also make a (temporary?) backup of the existing directory.
The script has a dependency on pax, that should be puppetized as well.