TypeError: dist must be a Distribution instance

       问题应该就是setuptools的版本太新。更换较低版本。

wget https://pypi.python.org/packages/source/s/setuptools/setuptools-0.9.8.tar.gz
tar zxvf setuptools-0.9.8.tar.gz
cd setuptools-0.9.8/
sudo python setup.py install
cd
sudo easy_install pip
sudo aptitude install libffi-dev
git clone git@github.com:openstack/swift.git
cd swift/
sudo python setup.py install