I installed RVM system-wide (because I just can't wrap my head around the idea that we should have copies of rubies and gems for each user. I mean, yes, in some ways, it makes sense, but.... it just feels wrong, somehow.)

Anyways. I got RVM installed systemwide. That wasn't too bad.

But when I tried to get Passenger to install (with rvmsudo passenger-install-apache2-module), I got:

Your RVM wrapper scripts are too old. Please update them first by running 'rvm update --head && rvm reload && rvm repair all'.

First off, rvm update --head has been removed. I believe it's been replaced with "rvm get head" or even "rvm get latest". I ran "sudo rvm get latest". It did stuff. I'm pretty sure I was already at the latest though. Ran sudo rvm reload and sudo rvm repair all. Then tried rvmsudo passenger-install-apache2-module again. Still didn't work.

Tried sudo passenger-install-apache2-module. That failed - got:
/usr/local/rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:900:in `report_activate_error': Could not find RubyGem passenger (>= 0) (Gem::LoadError)

Tried passenger-install-apache2-module in userspace. It worked, surprisingly, but then it hit permission problems as it tried to write to various directories.

In the end, I did sudo irb, then manually ran each line in passenger-install-apache2-module, and that worked perfectly.

I don't know if Passenger will work when installed that way; I'm modifying my apache config now, but I'm at my train station...