# ARD scriptlet - clean obsolete receipts to prevent errors, then mount and install
rm -rf /Library/Receipts/*macports* && \
  hdiutil attach http://your.server.invalid/macports/suosikit/utils.dmg && \
  sudo -i '( cd /Volumes/MacPortsUtilities/ && for i in *pkg; do installer -pkg $i -target /; done )' && \
  sleep 7 && \
  hdiutil detach /Volumes/MacPortsUtilities