Installing gitorious wasn't as straightforward as I hoped, so here's another howto. It's a slightly modified and updated version of Christian Johansen's blog.

The main problem seemed to be Ruby versions, so my advice is to stick to the versions I mention.

I did not install the main version of Gitorious, but a fork called "yousource", allowing me to make projects private, only readable by project contributors.

Most commands assume you're the root user.