Hard-coded paths in pypyclean
While those values probably work well for a plain Debian way, the problem with this approach and PyPy pops up when you use pyenv to install PyPy or PyPy3. Then those paths don't exist and the script fails.
To make the story worse, it looks like the "ns" path (namespace) is not available in PyPy installations of pyenv.
Is there a realistic way to solve this problem generically, so that it works for all PyPy installations, not just Debian-style?