zeroinstall-injector fails with pygtk problem

[wsc9tt@…]

The zeroinstall-injector package builds and installs fine but here is a sample from running it:

mbp ~ $ 0launch --gui Traceback (most recent call last):

File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/zeroinstall/0launch-gui/0launch-gui", line 11, in <module>

import pygtk; pygtk.require('2.0')

ImportError: No module named pygtk

It appears to be missing some dependency.

This is from a fresh install of macports on a Leopard machine.