Not too long ago I did a development install on my powerbook using Postgresql 7.4.1 and AOLServer 4 via darwinports with Vinod's instructions acting as rough guides . Its was slightly non-standard (most stuff is in /opt/local/ rather than /usr/local/), but damn, it was easy. The readline dependency for PG is automatically handled, as is threaded tcl support for AOLServer.
I have a very ugly plain text version of the instructions. If anyone is interested, they can email me.
http://darwinports.com/