We have uninstall instructions here:
http://trac.macports.org/wiki/FAQ#HowdoIremoveoruninstallMacPorts
They say:
MacPorts can be removed by issuing the following command from
within Terminal using the regular bash shell (${prefix} being the
directory onto which you installed MacPorts, /opt/local by default):
sudo rm -rf ${prefix} \
/Applications/MacPorts \
/Applications/DarwinPorts \
/Library/Tcl/macports1.0 \
/Library/Tcl/darwinports1.0 \
/Library/LaunchDaemons/org.macports.* \
/Library/StartupItems/DarwinPortsStartup \
/Library/Receipts/MacPorts*.pkg \
/Library/Receipts/DarwinPorts*.pkg \
/etc/manpaths.d/macports \
/etc/paths.d/macports
Problems:
1. This doesn't uninstall ports that install into weird locations,
like those that install into ${x11prefix}. This is mentioned later in
the FAQ entry.
2. It doesn't take into account that users can install the
macports1.0 Tcl package into a different location.
3. It doesn't take into account that users can as of MacPorts 1.7.0
select a different applications directory.
4. It doesn't uninstall frameworks installed by MacPorts. Those have
until now gone into /Library/Frameworks which can also contain non-
MacPorts items. In 1.7.0, the frameworks directory is also user-
configurable.
5. It does uninstall user configuration files.
To take care of 1, 3, 4, and 5, maybe we should tell people to run
"sudo port -f uninstall installed" first. Then look through ${prefix}
for any remaining non-port-owned files they may still want to keep.
Maybe MacPorts should come with an uninstall script? How might we
want that to work? It could uninstall all ports as above, then move
the remaining parts of itself into a "Previous MacPorts" folder (like
a Mac OS X Archive & Install puts the parts of the old OS into a
"Previous Systems" folder).
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