Comment 3 for bug 531876

No, actually that breaks it harder. It doesn't use ports.ubuntu.com for stuff not on archive.ubuntu.com, and it presumes mirrors exist for all architectures (which doesn't tend to be true for Ubuntu). The more comprehensive fix to this bug is to refactor Ubuntu.info.in to default to ports (where the majority of architectures reside), and special-case exceptions. To save my typing, I've special-cased ports for very old releases (where more architectures were on archive.ubuntu.com and fewer on ports.ubuntu.com) in http://bazaar.launchpad.net/~persia/python-apt/lucid+bf531876/revision/341

I've not encountered the build failure that http://bzr.debian.org/loggerhead/apt/python-apt/debian-sid/revision/352 claims to fix (I also test build on powerpc), but my fear is that it would imply that mirrors worked for ports, which doesn't tend to be the case.