old_contents: import ez_setup
  ez_setup.use_setuptools()
  
  from setuptools import setup, find_packages
  
  with open('README.md') as f:
      description = f.read()
  
  setup(name='WebShack',
        version='0.0.1',
        description='Web Component/Polymer distribution system',
        author='Alistair Lynn',
        author_email='arplynn@gmail.com',
        license="MIT",
        long_description=description,
        url='https://github.com/prophile/webshack',
        entry_points = {
            'console_scripts': [
                'webshack = webshack.cli:main'
            ]
        },
        zip_safe=True,
        package_data = {
            'webshack': ['*.yaml']
        },
        install_requires=[
            'tinycss >=0.3, <0.4',
            'PyYAML >=3.11, <4',
            'docopt >=0.6.2, <0.7',
            'termcolor >=1.1.0, <2'
        ],
        packages=find_packages())
  
  
new_contents: import sys
  
  if sys.version < '3.4':
      print('Sorry, this is not a compatible version of Python. Use 3.4 or later.')
      exit(1)
  
  import ez_setup
  ez_setup.use_setuptools()
  
  from setuptools import setup, find_packages
  
  with open('README.md') as f:
      description = f.read()
  
  setup(name='WebShack',
        version='0.0.1',
        description='Web Component/Polymer distribution system',
        author='Alistair Lynn',
        author_email='arplynn@gmail.com',
        license="MIT",
        long_description=description,
        url='https://github.com/prophile/webshack',
        entry_points = {
            'console_scripts': [
                'webshack = webshack.cli:main'
            ]
        },
        zip_safe=True,
        package_data = {
            'webshack': ['*.yaml']
        },
        install_requires=[
            'tinycss >=0.3, <0.4',
            'PyYAML >=3.11, <4',
            'docopt >=0.6.2, <0.7',
            'termcolor >=1.1.0, <2'
        ],
        packages=find_packages())
  
  
subject: Add a version sanity check