Bug#884852: implement a way to report packages installed from a given repository

[Arturo Borrero Gonzalez <arturo@debian.org>]

Package: apt
Version: 1.6~alpha5
Severity: wishlist

Dear apt maintainers/developers, thanks for your hard work with key package!
It's really appreciated :-)

I would love to have a clean way to generate a report of packages installed from
a given repository.

Example:

sources.list contains 'deb repoA main', 'deb repoB main'

$ apt-whatever report-packages
pkg1: installed from repoB
pkg2: installed from repoB
pkg3: installed from repoA
pkg4: installed from repoA

If this already exists, or is scriptable in anyway, could you please share the info?

Thanks, best regards.