Comment 5 for bug 2028054

Looks like this situation got resolved and src:python-reportlab is not needed in "main" any longer. There are no reverse-dependency pulling it in.

$ reverse-depends src:python-reportlab -c main -r mantic
=> Nothing. Therefore, src:python-reportlab should be demoted to "universe"

This probably just needs a seed change:
$ seeded-in-ubuntu python-reportlab
python-reportlab-doc (from python-reportlab) is seeded in:
  kubuntu: supported
  lubuntu: supported
  ubuntu-mate: supported
  ubuntu: supported
  ubuntukylin: supported
  xubuntu: supported
python3-reportlab (from python-reportlab) is seeded in:
  kubuntu: supported
  lubuntu: daily-live
  ubuntu-mate: daily-live
  ubuntu-unity: daily-live
  ubuntukylin: daily-live
  xubuntu: daily-live, daily-minimal

Edit: I did that just now: https://git.launchpad.net/~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu/commit/?id=ccf378c73f95792574c45cd75cd04e8bd787c3ae