old_contents: from setuptools import setup  # type: ignore
  
  # todo: add/remove/think about this list
  classifiers = [
      "Development Status :: 5 - Production/Stable",
      "Intended Audience :: Developers",
      "License :: OSI Approved :: MIT License",
      "Operating System :: OS Independent",
      "Programming Language :: Python",
      "Topic :: Games/Entertainment",
      "Topic :: Software Development :: Libraries",
      "Topic :: Software Development :: Libraries :: pygame",
      "Programming Language :: Python :: 3",
  ]
  
  with (open("README.rst")) as f:
      long_description = f.read()
  
  setup(
      name="pymunk",
      url="http://www.pymunk.org",
      author="Victor Blomqvist",
      author_email="vb@viblo.se",
      version="6.2.0",  # remember to change me for new versions!
      description="Pymunk is a easy-to-use pythonic 2d physics library",
      long_description=long_description,
      packages=["pymunk", "pymunk.tests"],
      include_package_data=True,
      license="MIT License",
      classifiers=classifiers,
      command_options={
          "build_sphinx": {
              "build_dir": ("setup.py", "docs"),
              "source_dir": ("setup.py", "docs/src"),
          }
      },
      python_requires=">=3.6",
      # Require >1.14.0 since that (and older) has problem with returing structs from functions.
      setup_requires=["cffi == 1.15.0rc1"],
      install_requires=["cffi == 1.15.0rc1"],
      cffi_modules=["pymunk/pymunk_extension_build.py:ffibuilder"],
      extras_require={
          "dev": ["pyglet", "pygame", "sphinx", "aafigure", "wheel", "matplotlib"]
      },
      test_suite="pymunk.tests",
  )
  
new_contents: from setuptools import setup  # type: ignore
  
  # todo: add/remove/think about this list
  classifiers = [
      "Development Status :: 5 - Production/Stable",
      "Intended Audience :: Developers",
      "License :: OSI Approved :: MIT License",
      "Operating System :: OS Independent",
      "Programming Language :: Python",
      "Topic :: Games/Entertainment",
      "Topic :: Software Development :: Libraries",
      "Topic :: Software Development :: Libraries :: pygame",
      "Programming Language :: Python :: 3",
  ]
  
  with (open("README.rst")) as f:
      long_description = f.read()
  
  setup(
      name="pymunk",
      url="http://www.pymunk.org",
      author="Victor Blomqvist",
      author_email="vb@viblo.se",
      version="6.2.0",  # remember to change me for new versions!
      description="Pymunk is a easy-to-use pythonic 2d physics library",
      long_description=long_description,
      packages=["pymunk", "pymunk.tests"],
      include_package_data=True,
      license="MIT License",
      classifiers=classifiers,
      command_options={
          "build_sphinx": {
              "build_dir": ("setup.py", "docs"),
              "source_dir": ("setup.py", "docs/src"),
          }
      },
      python_requires=">=3.6",
      # Require >1.14.0 since that (and older) has problem with returing structs from functions.
      setup_requires=["cffi == 1.15.0rc2"],
      install_requires=["cffi == 1.15.0rc2"],
      cffi_modules=["pymunk/pymunk_extension_build.py:ffibuilder"],
      extras_require={
          "dev": ["pyglet", "pygame", "sphinx", "aafigure", "wheel", "matplotlib"]
      },
      test_suite="pymunk.tests",
  )
  
subject: Update to use cffi 1.15.0rc2