i am trying to install gitpython 2.0.9 on salt master.
i tried installing gitpython but when i put gitfs in master i got message "[CRITICAL] No suitable gitfs provider module is installed."
so tried installing gitpython mutliple times in between i recycled salt-master twice, 1st when i added gitfs entry and 2nd when i remove gitfs entry.

      ID: GitPython
Function: pip.installed
    Name: GitPython < 2.0.9
  Result: True
 Comment: All packages were successfully installed
 Started: 15:58:24.339041
Duration: 1553.285 ms
 Changes:
          ----------
          GitPython==2.0.8:
              Installed

once i did that and i tried installing gitpython, i started getting below error to install gitpython 2.0.9

      ID: GitPython
Function: pip.installed
    Name: GitPython < 2.1.14
  Result: False
 Comment: An exception occurred in this state: Traceback (most recent call last):
            File "/usr/lib/python2.7/site-packages/salt/state.py", line 1933, in call
              **cdata['kwargs'])
            File "/usr/lib/python2.7/site-packages/salt/loader.py", line 1951, in wrapper
              return f(*args, **kwargs)
            File "/usr/lib/python2.7/site-packages/salt/states/pip_state.py", line 812, in installed
              **kwargs)
            File "/usr/lib/python2.7/site-packages/salt/states/pip_state.py", line 314, in _check_if_installed
              for version in reversed(available_versions):
          TypeError: argument to reversed() must be a sequence
 Started: 16:06:01.701500
Duration: 368661.261 ms
 Changes: