In the previous post I detailed how to install PostgreSQL with MacPorts. This time we will see how to get the latest PostGIS (version 1.2.0 as of this writing) installed. MacPorts provide PostGIS 1.1.1 but it depends on postgresql8 and we decided to go for the postgresql81 version last time. So we’ll have some handwork to get all run together. First install proj and geos from MacPorts