old_contents: """unittest/unittest2 compatibilty wrapper.
  
  Anything internal to nose2 *must* import unittest from here, to be
  sure that it is using unittest2 when on older pythons.
  
  Yes::
  
    from nose2.compat import unittest
  
  **NO**::
  
    import unittest
  
  **NO**::
  
    import unittest2
  
  """
  try:
      import unittest2 as unittest
  except ImportError:
      import unittest
  
  
  try:
      unittest.installHandler
  except AttributeError:
      raise ImportError("Built-in unittest version too old, unittest2 is required")
  
  __unittest = True
  
  
new_contents: """unittest/unittest2 compatibilty wrapper.
  
  Anything internal to nose2 *must* import unittest from here, to be
  sure that it is using unittest2 when on older pythons.
  
  Yes::
  
    from nose2.compat import unittest
  
  **NO**::
  
    import unittest
  
  **NO**::
  
    import unittest2
  
  """
  try:
      import unittest2 as unittest
  except ImportError:
      import unittest
  
  
  try:
      unittest.installHandler
  except AttributeError:
      raise ImportError("Built-in unittest version too old, unittest2 is required")
  
  __unittest = True
  
  
  try:
      from collections import OrderedDict
  except ImportError:
      from .backports.ordereddict import OrderedDict
  
subject: Add ordereddict to compat