Once you know your way around APT and dpkg, you can work through any issue you might have during an upgrade on other Debian-based distros, too. The copy of bus

Once you know your way around APT and dpkg, you can work through any issue you might have during an upgrade on other Debian-based distros, too. The copy of busybox that Debian-based distros package and ship even includes dpkg, so you can repair even a broken libc. Most end user issues with upgrade breakage on Debian downstreams like Ubuntu and Pop!_OS wouldn't be serious problems for experienced Debian users.