您可以手动安装现有的10.11安装中不存在的依赖项，然后使用--no-deps安装其他软件包以忽略这些依赖项.这样，它将跳过six(和已经安装的argparse).这适用于我的10.11 beta 6安装:

You can manually install the dependencies that don't exist on a stock 10.11 install, then install the other packages with --no-deps to ignore the dependencies. That way it will skip six (and argparse which is also already installed). This works on my 10.11 beta 6 install:

sudo pip install pbr
sudo pip install --no-deps stevedore
sudo pip install --no-deps virtualenvwrapper

并且无需禁用无根目录.

And no need to disable rootless.