old_contents: from setuptools import setup, find_packages
  
  setup(
      name='Tern',
      version='0.1.0',
      description='A simple way to version control your database.',
      author='Theron Luhn',
      author_email='theron@luhn.com',
      url='https://github.com/luhn/tern',
      packages=find_packages(),
      entry_points=dict(
          console_scripts=[
              'tern = tern.__main__:main',
          ],
      ),
      requires=[
          'six',
      ],
  )
  
new_contents: from setuptools import setup, find_packages
  
  requires = ['six']
  
  # Do we need importlib?  (Python 2.6)
  try:
      import importlib  # noqa
  except ImportError:
      requires.append('importlib')
  
  
  setup(
      name='Tern',
      version='0.1.0',
      description='A simple way to version control your database.',
      author='Theron Luhn',
      author_email='theron@luhn.com',
      url='https://github.com/luhn/tern',
      packages=find_packages(),
      entry_points=dict(
          console_scripts=[
              'tern = tern.__main__:main',
          ],
      ),
      requires=requires,
  )
  
subject: Add importlib requirement to setup.py