Comment 14 for bug 21837

Work on delta debs was being done in https://wiki.debian.org/Teams/Dpkg/Spec/DeltaDebs amongst other places, but it kind of stopped a bit. Deltas are getting harder and harder to justify with increasing speeds and less and less data caps, but it's certainly something I'm interested in developing.

I believe my format is fairly solid. The problem with debdelta was that it was incredibly slow, to the point where using it outside of dialup (well, I did not measure it, it might be a hyperbole) would basically be pointless.