With the information in a blog entry, an Eclipse bug, the Mylar Installation Guide and the Mylar User Guide I was able to install Mylar and configure it to retrieve issue data from my Eclipse XPS project hosted at Google Code.
Here's a screenshot of the Web Repository Settings dialog:
And this is what the list of current issues looks like:
Totally cool. Mylar rocks, and I'm not the only one who says so.
PS: Yup, already three issues. All enhancement requests, no bugs (yet). I'd better start coding ;-)
Edit: Fixed first link in post (to the original blog entry).