Ok. This time for sure.
Getting MySQL and PHP installed: easy. Figuring out how to configure and install WordPress: no problem. Figuring out why WP thought my site should be called “G5.local”: now that was a problem.
In case you were wondering, it was because that’s what hostname returns until you modify your /etc/hostconfig to not say “-AUTOMATIC-“. I mean, of course (!), how could I have been so stupid. 🙂