old_contents: """tmuxp lives at <https://github.com/tmux-python/tmuxp>."""
  import sys
  
  from setuptools import setup
  
  about = {}
  with open("tmuxp/__about__.py") as fp:
      exec(fp.read(), about)
  
  with open('requirements/base.txt') as f:
      install_reqs = [line for line in f.read().split('\n') if line]
  
  with open('requirements/test.txt') as f:
      tests_reqs = [line for line in f.read().split('\n') if line]
  
  if sys.version_info[0] > 2:
      readme = open('README.md', encoding='utf-8').read()
  else:
      readme = open('README.md').read()
  
  history = open('CHANGES').read().replace('.. :changelog:', '')
  
  
  setup(
      name=about['__title__'],
      version=about['__version__'],
      url=about['__github__'],
      project_urls={
          'Documentation': about['__docs__'],
          'Code': about['__github__'],
          'Issue tracker': about['__tracker__'],
      },
      download_url=about['__pypi__'],
      license=about['__license__'],
      author=about['__author__'],
      author_email=about['__email__'],
      description=about['__description__'],
      long_description=readme,
      packages=['tmuxp'],
      include_package_data=True,
      install_requires=install_reqs,
      tests_require=tests_reqs,
      zip_safe=False,
      keywords=about['__title__'],
      entry_points=dict(console_scripts=['tmuxp=tmuxp:cli.cli']),
      classifiers=[
          "Development Status :: 5 - Production/Stable",
          "License :: OSI Approved :: MIT License",
          "Operating System :: POSIX",
          "Operating System :: MacOS :: MacOS X",
          "Environment :: Web Environment",
          "Intended Audience :: Developers",
          "Programming Language :: Python",
          "Programming Language :: Python :: 3.6",
          "Programming Language :: Python :: 3.7",
          "Programming Language :: Python :: 3.8",
          "Programming Language :: Python :: 3.9",
          "Programming Language :: Python :: Implementation :: PyPy",
          "Topic :: Utilities",
          "Topic :: System :: Shells",
      ],
  )
  
new_contents: """tmuxp lives at <https://github.com/tmux-python/tmuxp>."""
  import sys
  
  from setuptools import setup
  
  about = {}
  with open("tmuxp/__about__.py") as fp:
      exec(fp.read(), about)
  
  with open('requirements/base.txt') as f:
      install_reqs = [line for line in f.read().split('\n') if line]
  
  with open('requirements/test.txt') as f:
      tests_reqs = [line for line in f.read().split('\n') if line]
  
  if sys.version_info[0] > 2:
      readme = open('README.md', encoding='utf-8').read()
  else:
      readme = open('README.md').read()
  
  history = open('CHANGES').read().replace('.. :changelog:', '')
  
  
  setup(
      name=about['__title__'],
      version=about['__version__'],
      url=about['__github__'],
      project_urls={
          'Documentation': about['__docs__'],
          'Code': about['__github__'],
          'Issue tracker': about['__tracker__'],
      },
      download_url=about['__pypi__'],
      license=about['__license__'],
      author=about['__author__'],
      author_email=about['__email__'],
      description=about['__description__'],
      long_description=readme,
      long_description_content_type="text/markdown",
      packages=['tmuxp'],
      include_package_data=True,
      install_requires=install_reqs,
      tests_require=tests_reqs,
      zip_safe=False,
      keywords=about['__title__'],
      entry_points=dict(console_scripts=['tmuxp=tmuxp:cli.cli']),
      classifiers=[
          "Development Status :: 5 - Production/Stable",
          "License :: OSI Approved :: MIT License",
          "Operating System :: POSIX",
          "Operating System :: MacOS :: MacOS X",
          "Environment :: Web Environment",
          "Intended Audience :: Developers",
          "Programming Language :: Python",
          "Programming Language :: Python :: 3.6",
          "Programming Language :: Python :: 3.7",
          "Programming Language :: Python :: 3.8",
          "Programming Language :: Python :: 3.9",
          "Programming Language :: Python :: Implementation :: PyPy",
          "Topic :: Utilities",
          "Topic :: System :: Shells",
      ],
  )
  
subject: Add long_description to text/markdown