apt-get？我在某个地方读过它，但忘了 – 有人费心去清理它吗？ Debian不喜欢
The initial reason why aptitude was included in ubuntu was that the desktop installer (ubiquity) depended on it, but now the desktop installer has been rewritten to not require it unless in particular cases, and hence it goes.
We could substantially reduce the size of the minimal seed by installing tasksel and aptitude dynamically, so that we don’t end up with them on live-installed systems.
[…] aptitude has a different dependency resolver which handles things quite differently from apt-get, and the fact is that we simply do not routinely test that dependency resolver. […].
The base system is constantly tight on space, and everyone wants a piece of that space. […]