With minimal effort, I was able to get the PHP bundled with Snow Leopard to use the PHP extensions that I had compiled for xdebug, imagick, and magickwand to run in 64bit mode.
Snow Leopard comes bundled with Apache 2.2.11, PHP 5.3.0, and SVN 1.6.2.
I upgraded my MySQL install from 5.0.77 to 5.1.37 and then moved my data folder to another location to help keep things sane using the /etc/my.cnf file.
I installed the Xcode from the Snow Leopard CD and downloaded the iPhone SDK 3.1 Beta 3 for Snow Leopard. Slightly different interface, but I welcome the changes.
So now, instead of using external packages for SVN and PHP (Entropy), now I’m using the prepackaged bundled software. I did have to reconfigure my svn connection in Apache as it got toasted in the upgrade to Snow Leopard. It wasn’t a problem though as it was only a few lines.
Now I can sleep good, I hope.