pip.log

Obtaining South from hg+http://bitbucket.org/andrewgodwin/south/@ecaafda23e600e510e252734d67bf8f9f2362dc9#egg=South-dev

  Cloning hg http://bitbucket.org/andrewgodwin/south/ (to revision ecaafda23e600e510e252734d67bf8f9f2362dc9) to ./src/south

Cannot find command 'hg'

Exception information:
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/basecommand.py", line 104, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/commands/install.py", line 245, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/req.py", line 959, in prepare_files
    req_to_install.update_editable(not self.is_download)
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/req.py", line 388, in update_editable
    vcs_backend.obtain(self.source_dir)
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/vcs/mercurial.py", line 81, in obtain
    call_subprocess([self.cmd, 'clone', '--noupdate', '-q', url, dest])
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/vcs/__init__.py", line 108, in cmd
    command = find_command(self.name)
  File "/usr/local/lib/python2.6/dist-packages/pip-1.1-py2.6.egg/pip/util.py", line 95, in find_command
    raise BadCommand('Cannot find command %r' % cmd)
BadCommand: Cannot find command 'hg'