capturer >= 2.4
coverage >= 4.2
pytest >= 3.0.4 ; python_version > '2.6'
pytest-cov >= 2.4.0

# pytest release 3.3 drops Python 2.6 compatibility:
# https://docs.pytest.org/en/latest/changelog.html#pytest-3-3-0-2017-11-23
pytest < 3.3 ; python_version < '2.7'
