At the time of writing this book, the most recent version of OmniPITR is 1.3.3. In order to install it, we would like to introduce the PostgreSQL Extension Network (PGXN). PGXN is a site that attempts to collect PostgreSQL-related tools and extensions in a single place to simplify usage. PGXN is located at this URL:
PGXN provides a command-line tool named pgxn to access the PGXN repository, which we can install with Python's setuptools. Use this command to install pgxn:
sudo easy_install pgxnclient
