I did a recent search in DarwinPorts, and it seems we finally have a sane way to install this. Four packages will pop up if you do a 'port search midgard':

midgard-apache2
midgard-core
midgard-data
midgard-php4

Currently, DP has version 1.7.4, which isn't the absolute latest, but that's OK with me. Anything is better than the insane package installer the developers came up with.