old_contents: #!/usr/bin/env python
  from setuptools import setup, find_packages
  
  setup(
      name='Hugh',
      version='0.1',
      packages=['hugh'],
      install_requires = [
          'Werkzeug',
      ],
  )
  
new_contents: #!/usr/bin/env python
  from setuptools import setup, find_packages
  
  setup(
      name='Hugh',
      version='0.1',
      packages=find_packages(),
      install_requires = [
          'Werkzeug',
      ],
  )
  
subject: use find_packages() in setup.py to make sure sub-packages are installed