OS 10.9 no longer has /Developer, but
DeRez, Rez & SetFile are in $PATH since at least 10.6
echo "setting file icon ..."
cp ${PRODUCT_PKG_DIR}/$Resources/appIcon.icns ${ICNSTMP}.icns
-/usr/bin/sips -i ${ICNSTMP}.icns
-/Developer/Tools/DeRez -only icns ${ICNSTMP}.icns > ${ICNSTMP}.rsrc
-/Developer/Tools/Rez -append ${ICNSTMP}.rsrc -o "$UC_DMG"
-/Developer/Tools/SetFile -a C "$UC_DMG"
+sips -i ${ICNSTMP}.icns
+DeRez -only icns ${ICNSTMP}.icns > ${ICNSTMP}.rsrc
+Rez -append ${ICNSTMP}.rsrc -o "$UC_DMG"
+SetFile -a C "$UC_DMG"
rm ${ICNSTMP}.icns ${ICNSTMP}.rsrc