Postgres via macport

simplepastiefile.rb

###########################################################
# A startup item has been generated that will aid in
# starting postgresql84-server with launchd. It is disabled
# by default. Execute the following command to start it,
# and to cause it to launch at startup:
#
# sudo port load postgresql84-server
###########################################################
--->  Installing postgresql84-server @8.4.11_0

To create a database instance, after install do
 sudo mkdir -p /opt/local/var/db/postgresql84/defaultdb
 sudo chown postgres:postgres /opt/local/var/db/postgresql84/defaultdb
 sudo su postgres -c '/opt/local/lib/postgresql84/bin/initdb -D /opt/local/var/db/postgresql84/defaultdb'