howto remove unneeded dependencies

[swer]

I'm searching for a function in equo to remove unneeded dependencies. And I'm looking for a list of installed packages, which don't belong to the system.
On gentoo I can edit /var/lib/portage/world and remove packages I do not longer want. And then run emerge --depclean. But it seams that in eque is no exact match for this command.
I found the unusedpackages command for equo, but the result is not what I'm looking for. I installed some programs, and after removing them without the deep switch, i know that there are some unneeded dependencies left. But they are not listed in the result off the unusedpackages command.

[Fitzcarraldo]

There isn't one, apparently. See Ophan packages.