While I’ve had good luck with the Fedora and Debian templates being stable, I’ve never been able to keep an Arch Linux template around for longer than a couple of months.
When updating through the Qubes updater, after some time it always either stops being able to update due to broken dependencies or updates “successfully” in such a way that the whole template stops being able to boot.
How do you keep your arch linux templates from breaking? Is there any better way than just keeping backups and hoping nothing goes wrong?