old_contents: from setuptools import setup, find_packages
  
  VERSION = '1.0'
  
  requires = []
  
  setup(name='npuzz',
        version=VERSION,
        description='n-puzzle',
        packages=find_packages(),
        include_package_data=True,
        zip_safe=False,
        install_requires=requires,
        extras_require={
            'testing': testing_extras,
        },
        entry_points="""\
        [console_scripts]
        run_search = npuzz.scripts.run_search:main
        """,
        )
  
new_contents: from setuptools import setup, find_packages
  
  VERSION = '1.0'
  
  requires = []
  
  setup(name='npuzz',
        version=VERSION,
        description='n-puzzle',
        packages=find_packages(),
        include_package_data=True,
        zip_safe=False,
        install_requires=requires,
        entry_points="""\
        [console_scripts]
        run_search = npuzz.scripts.run_search:main
        """,
        )
  
subject: Remove reference testing requirements from setup.py