# core
  cython<3.0
  packaging
  pyyaml
  ruamel.yaml
  # lint
  black
  flake8
  mypy==0.812
  # testing
  hypothesis
  pexpect
  pytest
  pytest-asyncio
  pytest-cov
  pytest-httpserver
  pytest-instafail
  pytest-rerunfailures
  pytest-xdist
  selenium==4.0.0.b3