Compile a port without its dependencies?

[Walter Hurry]

Is there a way to compile a port without its dependencies?

I ask because recently I wanted two shlibs: wnck.so and rsvg.so (they are 
provided by x11-toolkits/py-gnome-desktop). I didn't need all the 
accompanying baggage (half of GNOME it seems), but it dragged in over 80 
other packages.

In the end I let it have its way, copied the libs to a safe place, then 
uninstalled all the packages and copied the libs back again.