2013/7/15 Jerome BENOIT <g6299304p@rezozer.net>: > the former binary package > liblambda0 is not discarded by the new binary package liblambda1, neither in Sid > nor at the upgrading stage with aptitude. > I guess that something is missing in `debian/control', any clue ? I think this is intentional. And this is why package names follow SONAMES. If old package is removed all dependent packages will be broken.