Raspberry Pi has software OpenGL from Mesa and hardware accelerated OpenGL ES 2.0.
A quick look at FoF as well as FoFiX sources reveal they both use old fixed function pipeline (although FoFiX is more modern), which is not available in GLES 2.0. So not only is software OpenGL the only option at the moment, also porting to GLES 2.0 would not be trivial. I'm also inclined to believe that Python will not help in getting decent performance.
Performous is in the repos, but that will use the regular OpenGL, which will run on CPU and be unplayable slow. The renderer got an overhaul in version 0.7.0, which has enabled porting to OpenGL ES 2.0. However, even though there is some graphics showing with GLES 2.0, there are still many problems and the performance so far is not at all promising (especially the CPU performance, GPU seems to have potential). More details of my porting effort here: https://github.com/performous/performous/issues/17