Description of problem:

lettuce fails to run. Even in an empty dir.

Version-Release number of selected component (if applicable):
python-lettuce-0.2.20-1.fc23.noarch

How reproducible:
Every time

Steps to Reproduce:
1. Run "lettuce"

Actual results:
$ lettuce
Traceback (most recent call last):
  File "/usr/bin/lettuce", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3084, in <module>
    @_call_aside
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3070, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3097, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 653, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 666, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 839, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'unittest2>=1.0.0' distribution was not found and is required by testtools


Expected results:
Lettuce runs and complains about missing flags or input.