Also, packages are tested in sid/unstable and migrates to testing which then becomes the new stable when it's ready. And packages are tested across releases, e

Also, packages are tested in sid/unstable and migrates to testing which then becomes the new stable when it's ready. And packages are tested across releases, enabling one to dist-upgrade to a new version of the system easily. I think it's piuparts that does this job of testing packages among themselves too.