Abrir el Terminal y ejecutar los siguientes comandos:
sudo port -fp uninstall installedsudo rm -rf \
    /opt/local \
    /Applications/DarwinPorts \
    /Applications/MacPorts \
    /Library/LaunchDaemons/org.macports.* \
    /Library/Receipts/MacPorts*.pkg \
    /Library/StartupItems/DarwinPortsStartup \
    /Library/Tcl/macports1.0 \
    ~/.macportsexport PATH="/opt/local/bin:/opt/local/sbin:$PATH"