1# This file describes Python package requirements to be 2# installed in the pyvenv Python virtual environment. 3# 4# Packages are placed in groups, which are installed using 5# the ensuregroup subcommand of python/scripts/mkvenv.py. 6# Each group forms a TOML section and each entry in the 7# section is a TOML key-value list describing a package. 8# All fields are optional; valid fields are: 9# 10# - accepted: accepted versions when using a system package 11# - installed: fixed version to install in the virtual environment 12# if a system package is not found; if not specified, 13# the minimum and maximum 14# - canary: if specified, use this program name to present more 15# precise error diagnostics to the user. For example, 16# 'sphinx-build' can be used as a bellwether for the 17# presence of 'sphinx' in the system. 18