Error, on Ubuntu 12.04
$ sudo -H pip install gevent
Exception:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 232, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 339, in run
requirement_set.prepare_files(finder)
File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 229, in prepare_files