Recently, on my testing, apt would not want to upgrade packagekit. a apt full-upgrade would update it but remove packagekit-tool.
Usually, there can be 2 reasons for such a behaviour : 1. packagekit-tool is a bit late, just wait 2. packages were split differently, thus packagekit-tool must be removed (that was the case here). The information is almost always in the changelog. I look at the changelog using aptitude, but aptitude is not the official tool, Thus, what would be the official way to look at the changelog ? -- Erwan David
