*** setup.py	Wed Sep 30 04:49:33 2020
--- setup.py	Mon Sep 27 06:02:23 2021
***************
*** 36,42 ****
      version=__version__,
  
      tests_require=test_require,
!     extras_require={"crc32c": ["crc32c"]},
      cmdclass={"test": Tox},
      packages=find_packages(exclude=['test']),
      author="Dana Powers",
--- 36,47 ----
      version=__version__,
  
      tests_require=test_require,
!     extras_require={
!         "crc32c": ["crc32c"],
!         "lz4": ["lz4"],
!         "snappy": ["python-snappy"],
!         "zstd": ["python-zstandard"],
!     },
      cmdclass={"test": Tox},
      packages=find_packages(exclude=['test']),
      author="Dana Powers",