Package: unattended-upgrades Version: 2.8 If you delete /etc/apt/sources.list (because you manage all of your sources in /etc/apt/sources.list.d) and then run unattended-upgrade, /etc/apt/sources.list gets created as an empty file.
I find this behaviour uninutuitive and would rather not have unattended-upgrade create it. It isn't clear whether this potentially is a policy violation (modifying a configuration file). I haven't figured out which part of unattended-upgrades does this and I haven't tried reproducing it on unstable. Helmut