Hi,
Right now we (make our best to) provide ready-made packages for Debian (stable), most(ly) recent Fedora, MacOS X, Microsoft Windows and Ubuntu (latest as well as latest LTS). Are there other systems/versions on which yacas/yagy is (or can be) popular enough to warrant extending the list?
Are you using yacas or willing to, but can't get any for your environment? If so, tell us here!
Cheers,
Grzesiek