HacPDX: Portland Haskell Hackathon
Building is at 4th and College. Room 86-01 is in the basement, take the elevator or stairs down to basement and follow the signs.
HacPDX is an opportunity to join Portland Haskell hackers in building and improving Hackage libraries and tools. If you've never been, Hackathons are typically not only a good opportunity for experienced devs to work together but also a great way for newcomers to get involved in the community.
Visit this website for complete details: http://www.haskell.org/haskellwiki/HacPDX