title: How do I install the hstore module on PostgreSQL 9.0 (MacPorts install)?
body: <p>I have a lovely PostgreSQL 9.0 server installed on my laptop via MacPorts. I would like to enable the <a href="http://www.postgresql.org/docs/9.0/static/hstore.html">hstore module</a>, but I can't find any instructions for installing these optional modules (nor can I find any hstore-related code in <code>/opt/local/share/postgresql90/contrib/</code>).</p>
  
  <p>I <em>have</em> found some hstore-related SQL <a href="https://github.com/marcelor/django-postgresql-hstore/blob/master/management/commands/enable_hstore.py">here</a>, but I'm not sure where it comes from or if it's compatible w/ PostgreSQL 9.0.</p>
  
  <p>So, how do I enable the hstore module on my MacPorts-installed Postgres 9.0 server?</p>