def fix_lib64(lib_dir, symlink=True):
    if [p for p in distutils.sysconfig.get_config_vars().values()
        if isinstance(p, basestring) and 'lib64' in p]:
        # PyPy's library path scheme is not affected by this.
        # Return early or we will die on the following assert.
        if is_pypy:
            logger.debug('PyPy detected, skipping lib64 symlinking')
            return

        logger.debug('This system uses lib64; symlinking lib64 to lib')

        assert os.path.basename(lib_dir) == 'python%s' % sys.version[:3], (
            "Unexpected python lib dir: %r" % lib_dir)
        lib_parent = os.path.dirname(lib_dir)
        top_level = os.path.dirname(lib_parent)
        lib_dir = os.path.join(top_level, 'lib')
        lib64_link = os.path.join(top_level, 'lib64')
        assert os.path.basename(lib_parent) == 'lib', (
            "Unexpected parent dir: %r" % lib_parent)
        if os.path.lexists(lib64_link):
            return
        if symlink:
            os.symlink('lib', lib64_link)
        else:
            copyfile('lib', lib64_link)
Some platforms (particularly Gentoo on x64) put things in lib64/pythonX.Y
dataset/ETHPy150Open femmerling/backyard/virtualenv.py/fix_lib64