Postgres 8.3 is EOL and the minimum version supported by PostgreSQL
is 9.0. The production servers run 9.1, and the extension setup is
easier with it too.
-# Using a recent release (8.3 or higher) of PostgreSQL (http://postgresql.org/) is recommended.
+# Using a recent release (9.1 or higher) of PostgreSQL (http://postgresql.org/) is recommended.
# See https://github.com/openstreetmap/openstreetmap-website/blob/master/INSTALL.md#database-setup for detailed setup instructions.
#
development: