Do tell -- this is Apache's mod_dir -- what's the bug?
That link was to the pull request that explains the bug. ;P
I ran into a bug trying to use with RVM -- be forewarned. The new Passenger module-installer for Apache presumes you're using gemsets, and doesn't know about default gemsets. Patch forthcoming.
How old is your RVM installation? As far as I know recent RVM installations always have gemsets. When you didn't create any gemsets you're implicitly using the default gemset named 'default'.
I'm running from the head. And yeah, I was aware of the default gemset. The problem I ran into appears to be that if you don't have a named gemset (other than default, apparently) then the shell script can't figure out the name of the ruby it's running and gives up. I found an alternative way to figure out the ruby name from the environment, and I'll probably send it to Phusion. Because those guys rock.