old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import os
  import sys
  del os.link
  from importlib import import_module
  
  try:
      from setuptools import setup, find_packages
  except:
      sys.exit("Error: missing python-setuptools library")
  
  try:
      from alignak.version import VERSION
      __alignak_version__ = VERSION
  except:
      __alignak_version__ = 'x.y.z'
  
  from alignak_backend_client import __application__, __version__, __copyright__
  from alignak_backend_client import __releasenotes__, __license__, __doc_url__
  from alignak_backend_client import __name__ as __pkg_name__
  
  package = import_module('alignak_backend_client')
  
  setup(
      name=__pkg_name__,
      version=__version__,
  
      license=__license__,
  
      # metadata for upload to PyPI
      author="Frédéric MOHIER",
      author_email="frederic.mohier@gmail.com",
      keywords="alignak monitoring backend",
      url="https://github.com/Alignak-monitoring-contrib/alignak-backend-client",
      description=package.__doc__.strip(),
      long_description=open('README.rst').read(),
  
      zip_safe=False,
  
      packages=find_packages(),
      include_package_data=True,
  
      install_requires=['requests'],
  
      classifiers = [
          'Development Status :: 4 - Beta',
          'Environment :: Console',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
          'Natural Language :: English',
          'Programming Language :: Python',
          'Topic :: System :: Monitoring',
          'Topic :: System :: Systems Administration'
      ]
  )
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import os
  import sys
  del os.link
  from importlib import import_module
  
  try:
      from setuptools import setup, find_packages
  except:
      sys.exit("Error: missing python-setuptools library")
  
  try:
      from alignak.version import VERSION
      __alignak_version__ = VERSION
  except:
      __alignak_version__ = 'x.y.z'
  
  from alignak_backend_client import __application__, __version__, __copyright__
  from alignak_backend_client import __releasenotes__, __license__, __doc_url__
  from alignak_backend_client import __name__ as __pkg_name__
  
  package = import_module('alignak_backend_client')
  
  setup(
      name=__pkg_name__,
      version=__version__,
  
      license=__license__,
  
      # metadata for upload to PyPI
      author="Frédéric MOHIER",
      author_email="frederic.mohier@gmail.com",
      keywords="alignak monitoring backend",
      url="https://github.com/Alignak-monitoring-contrib/alignak-backend-client",
      description=package.__doc__.strip(),
      long_description=open('README.rst').read(),
  
      zip_safe=False,
  
      packages=find_packages(),
      include_package_data=True,
  
      install_requires=['requests', 'future'],
  
      classifiers = [
          'Development Status :: 4 - Beta',
          'Environment :: Console',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
          'Natural Language :: English',
          'Programming Language :: Python',
          'Topic :: System :: Monitoring',
          'Topic :: System :: Systems Administration'
      ]
  )
  
subject: Add future to install_requires