Hudson is now a part of FreeBSD ports
Cactusman reports in Japanese that Hudson just became a part of the FreeBSD ports collection. I don't know much about FreeBSD, but AIU this means FreeBSD users can install Hudson even more easily. The version of Hudson in FreeBSD is 1.190,
Hudson is also available as a part of OpenSUSE packages, and one person volunteered and is working on making it available in OpenSolaris.