> Brew is the internal Red Hat build system. Koji is the new, open > build system used for Fedora>= 7. Sorry, i meant Koji. I did found some info on the wiki about koji and xen but i'm actually surprised that the build system is so simple.. i expected a heavy cluster of about 10 or more quad core cpu's that are all dedicated to compiling programs but it doesn't seem to be the case. But than the question still stands.. what kind of powerhouse is that koji (xenbuilder) machine?