The problem is that the versions of the non-macports Ruby/Python/etc aren't managed by the ports system. So you're in for weird dependency mismatches if you upg

The problem is that the versions of the non-macports Ruby/Python/etc aren't managed by the ports system. So you're in for weird dependency mismatches if you upgrade your system version of Python. Self-contained keeps it simpler. Just use a script to set up your $PATH as needed.