deb http://debug.mirrors.debian.org/debian-debug buster-debug main contrib non-free deb http://debug.mirrors.debian.org/debian-debug buster-proposed-updates-debug main contrib non-free deb http://debug.mirrors.debian.org/debian-debug buster-backports-debug main contrib non-free # deb http://debug.mirrors.debian.org/debian-debug buster-backports-sloppy-debug main contrib non-free