I've just invested several hours trying to get my system to use the Pear libraries from MacPorts rather than the Pear libraries I had installed years ago using the command line installer, as described here. This is largely because I'm happy to let the MacPorts package manager take care of upgrading my software, and making sure all inter-dependencies are looked after.
Tag: #system administration
Unix. It's astonishingly flexible. This is, at different times, either wonderful or maddening.