old_contents: import setuptools
  
  def read_long_description():
      with open('README') as f:
          data = f.read()
      return data
  
  setup_params = dict(
      name="irc",
      description="IRC (Internet Relay Chat) protocol client library for Python",
      long_description=read_long_description(),
      use_hg_version=True,
      packages=setuptools.find_packages(),
      author="Joel Rosdahl",
      author_email="joel@rosdahl.net",
      maintainer="Jason R. Coombs",
      maintainer_email="jaraco@jaraco.com",
      url="http://python-irclib.sourceforge.net",
      classifiers = [
          "Development Status :: 5 - Production/Stable",
          "Intended Audience :: Developers",
          "Programming Language :: Python :: 2.6",
          "Programming Language :: Python :: 2.7",
          "Programming Language :: Python :: 3",
      ],
      setup_requires=[
          'hgtools',
      ],
      use_2to3=True,
      use_2to3_exclude_fixers=[
          'lib2to3.fixes.fix_import',
          'lib2to3.fixes.fix_next',
          'lib2to3.fixes.fix_print',
      ],
  )
  
  if __name__ == '__main__':
      setuptools.setup(**setup_params)
  
new_contents: import sys
  
  import setuptools
  
  def read_long_description():
      with open('README') as f:
          data = f.read()
      return data
  
  importlib_req = ['importlib'] if sys.version_info < (2,7) else []
  
  setup_params = dict(
      name="irc",
      description="IRC (Internet Relay Chat) protocol client library for Python",
      long_description=read_long_description(),
      use_hg_version=True,
      packages=setuptools.find_packages(),
      author="Joel Rosdahl",
      author_email="joel@rosdahl.net",
      maintainer="Jason R. Coombs",
      maintainer_email="jaraco@jaraco.com",
      url="http://python-irclib.sourceforge.net",
      classifiers = [
          "Development Status :: 5 - Production/Stable",
          "Intended Audience :: Developers",
          "Programming Language :: Python :: 2.6",
          "Programming Language :: Python :: 2.7",
          "Programming Language :: Python :: 3",
      ],
      install_requires=[
      ] + importlib_req,
      setup_requires=[
          'hgtools',
      ],
      use_2to3=True,
      use_2to3_exclude_fixers=[
          'lib2to3.fixes.fix_import',
          'lib2to3.fixes.fix_next',
          'lib2to3.fixes.fix_print',
      ],
  )
  
  if __name__ == '__main__':
      setuptools.setup(**setup_params)
  
subject: Declare importlib requirement on Python 2.6