old_contents: from setuptools import setup, find_packages
  
  setup(
      name="spinoff",
      version="0.3dev",
      packages=find_packages(),
  
      data_files=[('twisted/plugins', ['twisted/plugins/startnode.py'])],
  
      install_requires=[
          'twisted>=12.0',
          'txcoroutine',
          'txzmq',
      ],
  
      author="Erik Allik",
      author_email="erik.allik@skype.net",
  )
  
new_contents: from setuptools import setup, find_packages
  
  setup(
      name="spinoff",
      version="0.3dev",
      packages=find_packages(),
  
      data_files=[('twisted/plugins', ['twisted/plugins/startnode.py'])],
  
      install_requires=[
          'twisted>=12.0',
          'txcoroutine',
          'txzmq==0.5.1',
      ],
  
      dependency_links=[
          'https://github.com/eallik/txZMQ/tarball/master#egg=txzmq-0.5.1'
      ],
  
      author="Erik Allik",
      author_email="erik.allik@skype.net",
  )
  
subject: Use the custom fork of github.com/eallik/txzmq as the dependency instead of the original one at github.com/smira/txzmq