old_contents: #!/usr/bin/env python
  
  from setuptools import setup
  import os
   
   
  os.environ["PBR_VERSION"] = "0.1"
  
  setup(
      setup_requires=['pbr'],
      pbr=True,
  )
  
new_contents: #!/usr/bin/env python
  
  from setuptools import setup
  
  setup(
      setup_requires=['pbr'],
      pbr=True,
  )
  
subject: Remove the version hack in setup.py