[14:09] <maths22> I'm getting a very strange error on https://launchpad.net/~maths22/+archive/ubuntu/ruby-testing/+build/25478307 and i don't know how to debug it.  It seems to be complaining that it can't find gem2deb, but gem2deb is a focal universe package, and universe is enabled for this ppa: https://packages.ubuntu.com/focal/gem2deb .  In case it matters, this package builds just fine on jammy.
[14:27] <cjwatson> maths22: It's actually complaining that gem2deb is present but uninstallable in combination with your other build-dependencies
[14:28] <cjwatson> maths22: Unfortunately apt doesn't say why, but if you set up a test environment with your PPA then it may be possible to drill down into what's going on
[14:28] <maths22> ooh ok i at least better understand the issue then and know what i need to try to repro
[14:28] <maths22> thanks
[14:28] <cjwatson> maths22: Probably something to do with the various ruby packages in your PPA, at a guess
[14:47] <maths22> :sigh: of course it doesn't repro in a test environment; even with my ppa added it happily installed gem2deb along with the other packages
[15:01] <maths22> Confirmed in a clean pbuilder env that if i add my ppa i still can install gem2deb
[15:08] <cjwatson> maths22: Interesting, I can't reproduce it either in my setup
[15:08] <cjwatson> maths22: I'll retry your build just to avoid possibly wasting time on something that was transient
[15:08] <cjwatson> Hm except somebody already recently did, presumably you
[15:09] <maths22> Yeah i retried it (I tried adding backports to the set of packages in case it helped; sadly it did not)
[15:10] <cjwatson> Mm, more likely to make it worse
[15:11] <maths22> I just did that because the docker container i tested in had backports enabled and it worked there
[15:11] <cjwatson> maths22: Very weird.  I'm a bit short of time right now but I'm happy to investigate further if you can wait a bit - could you file a support ticket using the URL in the topic as a reminder?
[15:12] <maths22> Sure.  Thank you!
[15:14] <maths22> Filed https://bugs.launchpad.net/launchpad/+bug/2002662
[15:14] -ubottu:#launchpad- Launchpad bug 2002662 in Launchpad itself "build deps uninstallable but work locally" [Undecided, New]
[15:14] <maths22> Please let me know if anything about it needs adjustment
[15:15] <cjwatson> Oh, I meant https://answers.launchpad.net/launchpad
[15:15] <cjwatson> But OK, I guess I can move it
[15:16] <cjwatson> (moved)
[15:17] <maths22> Ugh oops, I didn't see that link.  Thank you that seems more appropriate.