MacPorts 1.9.0 has been released

[Scott Webster]

On Wed, Jun 9, 2010 at 1:19 PM, Randal L. Schwartz
<merlyn at stonehenge.com> wrote:
> Once you've done that, you can say "port list leaves", and either mark
> some of them requested, or "sudo port uninstall leaves".  Repeat until
> there are no more leaves.

You may wish to check out ticket 25182, summary is that the leaves
pseudo-port includes build dependencies.

http://trac.macports.org/ticket/25182

Scott