With the release of Haiku R1 Alpha 2, we are now using it to build the new ports you'll see on this site. At the moment, our freely provided FTP hosting, haiku-ports.de is down and not accessible. There are efforts in the pipeline to re-establish a new FTP location. On the Downloads page you'll start seeing files with r1a2 in the file name, that indicates that it's been built and tested on Haiku R1 Alpha 2. The Alpha 2 image contains both gcc2 and gcc4, but defaults to using gcc2. It also includes Perl 5.10.1 and Python 2.6.5. There's also cvs, subversion, git and mercurial, so you should be able to access most repositories right out of the box.
Posts for the month of May 2010