Comment 3 for bug 888665

Current versions of sbuild (I'm looking at 0.62.5-1ubuntu2) have changed how the apt resolver works. It now creates a dummy package whose dependencies match the build-depends of the package being built, puts that dummy package into an apt repository, adds the apt-repository to the sources.list, and installs the dummy package using apt.

Using a resolver with that behavior would fix this bug, so we may not need to use a different resolver on different pockets. I think this makes Adam's (1) the right long-term solution.

But given recent discussion, I don't think people generally have well-formed expectations of how the backports pocket *should* work (see the most recent Tech Board meeting, for example). I would prefer that we override NotAutomatic on builds in the backport pocket quickly than fix the resolver slowly, since that would be consistent with past behavior on backports builds.