chromium/third_party/protobuf/python/docs/environment.yml

name: protobuf
channels:
  - defaults
dependencies:
  - libprotobuf=3.11.4
  - make=4.2.1
  - pip=19.3.1
  - python=3.7.6
  - sphinx=2.4.0
  - sphinx_rtd_theme=0.4.3