Exception:
Traceback (most recent call last):
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/commands/install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/req.py", line 1229, in prepare_files
    req_to_install.run_egg_info()
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/req.py", line 330, in run_egg_info
    "%(Name)s==%(Version)s" % self.pkg_info())
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/_vendor/pkg_resources.py", line 2667, in parse
    reqs = list(parse_requirements(s))
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/_vendor/pkg_resources.py", line 2605, in parse_requirements
    line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")
  File "/Users/cougar/dev/tmp-83d539b3e47fa7c3/lib/python2.7/site-packages/pip/_vendor/pkg_resources.py", line 2583, in scan_list
    "Expected ',' or end-of-list in",line,"at",line[p:]
ValueError: ("Expected ',' or end-of-list in", u'apache-libcloud==0.16.0+clusterhq.0', 'at', u'+clusterhq.0')

Storing debug log for failure in /Users/cougar/.pip/pip.log