old_contents: """ myhdl's distribution and installation script. """
  
  import ast
  import fnmatch
  import re
  import os
  import sys
  
  from collections import defaultdict
  
  if sys.version_info < (2, 6) or (3, 0) <= sys.version_info < (3, 4):
      raise RuntimeError("Python version 2.6, 2.7 or >= 3.4 required.")
  
  
  # Prefer setuptools over distutils
  try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  
  
  _version_re = re.compile(r'__version__\s+=\s+(.*)')
  
  with open('myhdl/__init__.py', 'rb') as f:
      version = str(ast.literal_eval(_version_re.search(
          f.read().decode('utf-8')).group(1)))
  
  data_root = 'share/myhdl'
  cosim_data = defaultdict(list)
  for base, dir, files in os.walk('cosimulation'):
      for pat in ('*.c', 'Makefile*', '*.py', '*.v', '*.txt'):
          good = fnmatch.filter(files, pat)
          if good:
              cosim_data[base].extend(os.path.join(base,f) for f in good)
  
  setup(
      name="myhdl",
      version=version,
      description="Python as a Hardware Description Language",
      long_description="See home page.",
      author="Jan Decaluwe",
      author_email="jan@jandecaluwe.com",
      url="http://www.myhdl.org",
      download_url="https://bitbucket.org/jandecaluwe/myhdl/get/0.8.1.zip",
      packages=['myhdl', 'myhdl.conversion'],
      data_files=[(os.path.join(data_root, k), v) for k, v in cosim_data.items()],
      license="LGPL",
      platforms='any',
      keywords="HDL ASIC FPGA hardware design",
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)',
          'License :: OSI Approved :: GNU Lesser General Public License v2 (LGPLv2)',
          'Operating System :: OS Independent',
          'Programming Language :: Python',
          'Programming Language :: Python :: 2',
          'Programming Language :: Python :: 2.6',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.4',
      ]
  )
  
new_contents: """ myhdl's distribution and installation script. """
  
  import ast
  import fnmatch
  import re
  import os
  import sys
  
  from collections import defaultdict
  
  if sys.version_info < (2, 6) or (3, 0) <= sys.version_info < (3, 4):
      raise RuntimeError("Python version 2.6, 2.7 or >= 3.4 required.")
  
  
  # Prefer setuptools over distutils
  try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  
  
  _version_re = re.compile(r'__version__\s+=\s+(.*)')
  
  with open('myhdl/__init__.py', 'rb') as f:
      version = str(ast.literal_eval(_version_re.search(
          f.read().decode('utf-8')).group(1)))
  
  data_root = 'share/myhdl'
  cosim_data = defaultdict(list)
  for base, dir, files in os.walk('cosimulation'):
      for pat in ('*.c', 'Makefile*', '*.py', '*.v', '*.txt'):
          good = fnmatch.filter(files, pat)
          if good:
              cosim_data[base].extend(os.path.join(base, f) for f in good)
  
  setup(
      name="myhdl",
      version=version,
      description="Python as a Hardware Description Language",
      long_description="See home page.",
      author="Jan Decaluwe",
      author_email="jan@jandecaluwe.com",
      url="http://www.myhdl.org",
      packages=['myhdl', 'myhdl.conversion'],
      data_files=[(os.path.join(data_root, k), v) for k, v in cosim_data.items()],
      license="LGPL",
      platforms='any',
      keywords="HDL ASIC FPGA hardware design",
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)',
          'License :: OSI Approved :: GNU Lesser General Public License v2 (LGPLv2)',
          'Operating System :: OS Independent',
          'Programming Language :: Python',
          'Programming Language :: Python :: 2',
          'Programming Language :: Python :: 2.6',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.4',
      ]
  )
  
subject: remove download_url since pip does not use it by default anymore