Clone MacPorts and Switch between clones

[Marko Käning]

Hi,

I'd like to experiment with kdelibs4, but don't want to give up my current MacPorts installation which is running kdelibs3, which is colliding with the newer lib of course.

I hope there is a way to have more than one MacPorts system installed on one machine which could be ideally cloned from an existing one. Also I imagine there must be an easy way to switch between these independently run versions of MacPorts.

Any ideas or even existing solutions?

Greets,
Marko