[oXygen-user] add xsv to oxygen as custom engine on mac

I have recently migrated to Mac from Windows, and brought my oXygen with me. I have been having difficulty setting it up to use XSV as a custom validation engine. Are there any oXygen+XSV users on Mac platforms out there who could advise me? What I've tried so far - Installed Macports, used it to install rpm, downloaded XSV-3.1-1.src.rpm, used rpm to install it, it seemed to run OK with just some warnings, but I can't figure out what it actually did, like what path I should enter into the oxygen dialog for setting it up as a custom validation engine. And the deeper question - is this rpm package even the appropriate for this situation? Thanks, Tara