[buildd-tools-devel] Bug#714883: sbuild: Support --add-repository to add an apt source for just one build

[Emanuele Aina]

> https://github.com/geofft/sbuild/tree/add-package
> 
> The trick is that you can use apt-get update with -o Dir::Etc::sourcelist 
> to point to the file, -o Dir::Etc::sourceparts pointing at an empty 
> directory, and -o APT::List-Cleanup=0. Since this allows cleaning up the 
> existing code in update_archive(), my first commit does this:
> 
> https://github.com/geofft/sbuild/commit/557d3946e9fcbd709e003c05fcb211315dab1fab
> 
> I think it'd be good to merge that patch now, since that's pure cleanup of 
> existing code.

That's truly awesome! I dropped a couple of minor comments on GitHub and
after they get addressed I'd really like to see your patches included.

I'll be happy to rebase my DummyArchive refactoring on top of your
patches as I think that moving all this stuff out of ResolverBase is
still a good thing to do.