pkg_add -f http://telia.dl.sourceforge.net/gnu-darwin/Mesa-4.0.1.tgz http://telia.dl.sourceforge.net/gnu-darwin/python-2.1.1.tgz http://telia.dl.sourceforge.net/gnu-darwin/py-tkinter-2.1.1.tgz http://telia.dl.sourceforge.net/gnu-darwin/py-pmw-0.8.5.tgz http://telia.dl.sourceforge.net/gnu-darwin/pymol-0_73.tgz http://telia.dl.sourceforge.net/gnu-darwin/povray-3.1g.tgz
ln -s /usr/local/bin/povray /usr/local/bin/x-povray
echo please ignore mtree errors