deb http://www.codelabs.ch/debian lenny-backports main contrib non-free
The codelabs.ch CA certificate can be downloaded here.
Browse the codelabs.ch git repositories here.
To get the lenny-backports from the codelabs.ch repository, add the following line to your /etc/apt/sources.list:
deb http://www.codelabs.ch/debian lenny-backports main contrib non-free
Then, execute the following commands:
$ sudo apt-get update $ sudo apt-get install debian-codelabs-archive-keyring $ sudo apt-get update