PyPy Winter Sports Sprint from 12-19th of January in Leysin, Switzerland

The next PyPy sprint will be held in Leysin, Switzerland, for the fifth time. The overall idea of the sprint is to continue working on making PyPy ready for general use.
The proposed topics are: ctypes, JIT, testing, LLVM. This is a fully public sprint, so newcomers and other topics are welcome. And like previous winters, the main side goal is to have fun in winter sports :-) See the sprint announcement for details.