esp-idf/docs/requirements.txt

# This is a list of python packages used to generate documentation. This file is used with pip:
# pip install --user -r requirements.txt
#
sphinx>=1.8.4
breathe>=4.11.1
sphinx-rtd-theme
sphinx-notfound-page
sphinxcontrib-blockdiag>=1.5.5
sphinxcontrib-seqdiag>=0.8.5
sphinxcontrib-actdiag>=0.8.5
sphinxcontrib-nwdiag>=0.9.5
recommonmark
future>=0.16.0 # for ../tools/gen_esp_err_to_name.py