For simple per-package results, "dpigs" from debian-goodies gives you what you want (and is little more than a one-liner similar to what was posted by another to this thread, internally.)
As for cumulative space, what you want is not how much space a package takes up but to answer the question: for a given set of package operations, what space will be occupied/freed? In my experience, firing up aptitude, programming in the proposed change (removals or additions) and hitting 'go' once, gives you the space changes that would result if you hit 'go' a second time. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20130225173548.GC27141@debian