Bug#1109842: apt-daily-upgrade.service creates /etc/apt/sources.list

I have pinpointed the issue in python-apt and provided a fix in form of a MR at 
https://salsa.debian.org/apt-team/python-apt/-/merge_requests/107

Let me know if anything is missing.

On Mon, 13 Oct 2025 12:03:34 +0200 Lee Garrett <[email protected]> wrote:
> This issue is caused by unattended-upgrade, and is 100% reproducible. 
> Reassigning as such.
> 
> root@mail:~# /usr/bin/unattended-upgrade -v
> Checking if system is running on battery is skipped. Please install 
> powermgmt-base package to check power status and skip installing updates when 
> the system is running on battery.
> Checking if connection is metered is skipped. Please install python3-gi package 
> to detect metered connections and skip downloading updates.
> Starting unattended upgrades script
> Allowed origins are: origin=Debian,codename=trixie,label=Debian, 
> origin=Debian,codename=trixie,label=Debian-Security, 
> origin=Debian,codename=trixie-security,label=Debian-Security
> Initial blacklist:
> Initial whitelist (not strict):
> No packages found that can be upgraded unattended and no pending auto-removals
> root@mail:~# ls -l /etc/apt/sources.list
> -rw-r--r-- 1 root root 0 Oct 13 12:02 /etc/apt/sources.list
> 
>