A "distutils.cfg" has been written to:
$HOMEBREW_CELLAR/pypy/7.3.20/libexec/lib-python/2.7/distutils
specifying the install-scripts folder as:
$HOMEBREW_PREFIX/share/pypy
If you install Python packages via "pypy setup.py install", easy_install_pypy,
or pip_pypy, any provided scripts will go into the install-scripts folder
above, so you may want to add it to your PATH *after* $HOMEBREW_PREFIX/bin
so you don't overwrite tools from CPython.
Setuptools and pip have been installed, so you can use easy_install_pypy and
pip_pypy.
To update setuptools and pip between pypy releases, run:
pip_pypy install --upgrade pip setuptools