- 'google-auth <2',
- 'httplib2 >=0.9.2, <0.20.2',
- 'pycurl >=7.19.5.1, <7.45.0',
- 'ruamel.yaml >=0.15.54, <0.17.22',
- 'setuptools >=40.3.0',
- # As of 4.8.0rc1, typing_extensions does not parse in Python 3.7
- 'typing_extensions >=3.7.4, <4.8; python_version<"3.8"',
- 'ws4py >=0.4.2',
- 'protobuf <4.0.0dev',
- 'pyparsing <3',