The moment I saw a benchmark on PyPy 3.5 I was eager to test it. PyPy 3.5 support is still in development so I had to build it before trying it.
PyPy is hosted on bitbucket https://bitbucket.org/pypy/pypy and thus requires mercurial to clone it:
$ apt install mercurial $ hg clone https://bitbucket.org/pypy/pypy
Now let's checkout the py3.5 branch:
$ cd pypy $ hg up py3.5
Before building the pypy I had some missing dependencies on my Debian 8 system:
$ apt install pypy libbz2-dev libexpat1-dev libffi-dev pkg-config libncurses5-dev
Yes, pypy build process requires an older version of pypy :D Although, docs say that it should be possible to build i with CPython.
Anyway, now we're ready to build the pypy and that's as easy as executing:
$ rpython/bin/rpython -Ojit pypy/goal/targetpypystandalone.py
Eventually, on my computer after 37 minutes, there will be pypy-c which is your Python interpreter/JIT.