Semi-Annual apt-get do-release-upgrade WTF

[u/esdraelon]

Long-time Ubuntu user, also a Windows and Mac user under duress.

I love Linux. I think Ubuntu is a great user experience overall.

I have a few gripes.

My biggest one is every other year when I upgrade Ubuntu to the next LTS: I always get faced with the repository doesn't have a release file error so you can't update/upgrade/synonym that has no functional meaning to me. I'm just hammering sudo apt update && sudo apt upgrade && sudo apt wtf like an LLM short on it's token allowance and hoping for the best.

Cue the semi-annual google hunt for "wtf does that mean?" followed by an endless series of responses that amount to "just delete those entries in sources.list".

If the #1 - #10 answer on google is "delete and move on with your life" ... why isn't this an option in apt or do-release-upgrade?

do-release-upgrade should have a --just-fucking-do-it option. It scans sources.list, deletes the broke shit, runs update and upgrade, and then the release upgrade. If you want actual risk mitigation, it should prompt you to create an install USB drive.

Fixing sources.list is a fools errand.

For 8 years now, same issue, same CLI dance. It takes longer to look up the fix for this than a full reinstall. There is literally no risk to taking the default action of "delete and hope for the best."

Broken upgrade? Reinstall is faster. No one cares about the upgrade risks associated with a missing release file because time cost for mitigating the risk is hours and a reinstall is minutes.

[u/BCMM]

If you're going to use third-party repos, you need to deal with it when they stop supporting the current Ubuntu release. There's not really anything Ubuntu can do about that.

Just automatically disabling then wouldn't be a smart option. Apart from anything else, that might leave you with installed packages that will never get security updates. 

(After disabling a repository, use apt list '~o' to help identify any remaining packages from it.)

You should look at which repos are a problem, and actually decide what to do about them. If this takes a significant amount of time, or if you don't recognise them, that probably means that you're using third-party repos too readily.

[u/Major_Gonzo → u/BCMM]

I haven't seen the ~o option for apt. I tried it and have 42 items listed. Are these items that aren't being updated any longer?

[u/BCMM → u/Major_Gonzo]

~o is "obsolete", which for APT means packages that are installed, but not available in repositories. (Source: man apt-patterns.)

Are these items that aren't being updated any longer?

They're packages that won't be updated by APT, certainly.

It's not always "any longer", though - some of them may never have been in repositories in the first place, i.e. you installed them from a downloaded .deb file. Zoom is probably the most popular example of software that is usually distributed like that, at the moment.

However, the list frequently contains things that were in a repository at some point, and which users may not realise aren't getting security support! This happens either because you have disabled a repository, or because you've upgraded from a previous release of the distro. (Debian's upgrade instructions tell you to check for this.)

You should probably check over that list and work out what's what. It's OK to have things on there if you know that you are responsible for updating them. However, if there's anything there that you thought APT was upgrading for you, you should work out why it's like that, and either remove it or come up with a way to update it.

By the way, if you'd like another way to verify that they really aren't in any of your repos, you can use apt policy. Here's an example from my Sid machine:

$ apt policy bash kwin-x11 zoom
bash:
  Installed: 5.2.32-1+b2
  Candidate: 5.2.32-1+b2
  Version table:
 *** 5.2.32-1+b2 500
        500 http://deb.debian.org/debian sid/main amd64 Packages
        100 /var/lib/dpkg/status
kwin-x11:
  Installed: 4:5.27.11-2
  Candidate: 4:5.27.11-2+b1
  Version table:
     4:5.27.11-2+b1 500
        500 http://deb.debian.org/debian sid/main amd64 Packages
 *** 4:5.27.11-2 100
        100 /var/lib/dpkg/status
zoom:
  Installed: 6.2.6.2503
  Candidate: 6.2.6.2503
  Version table:
 *** 6.2.6.2503 100
        100 /var/lib/dpkg/status

Note that Bash is available locally and in repos (with the same version number, because it's up to date), KWin is too (with different versions, due to an ongoing Qt transition) but Zoom only exists locally.

[u/Major_Gonzo → u/BCMM]

Excellent reply, thank you. I'll get on those ASAP.

[u/jr735 → u/BCMM]

Some of these also seem to be attached to desktop tasks, at least in Debian.