The First 15 Years of PyPy – A Personal Retrospective
I migrated some internal tools from Lua to Python because of the incredible ecosystem. However, I miss everyday the speed of Lua thanks to LuaJIT. But I already ported almost all critical code to Cython. It is on my todo list to undo this port and test with Pypy.<p>I feel that PyPy need to receive much more love and attention than it actually gets. 
I already donated, and put all my hopes on PyPy. The Windows is also very renegaded, where the multiprocessing module is unusable. I hope to get some time soon to help this incredible project and finish lib_pypy/_winapi.py.