"Click packages" for Ubuntu
Ubuntu is considering adopting a new package format for third-party
applications that would be simpler for developers to work with. This
format would not replace dpkg in the Ubuntu system itself. "So the scope of what I've been considering is
purely leaf apps built on a fixed 'base system', which in the case of
the initial target of the Ubuntu phone/tablet work would be the run-time
part of the Ubuntu SDK."