requirements.txt

# We are currently targeting the versions shipped in Ubuntu 18.04.

tornado>=4.5,<4.6  # http://www.tornadoweb.org/en/stable/releases.html
psycopg2>=2.7,<2.8  # http://initd.org/psycopg/articles/tag/release/
sqlalchemy>=1.1,<1.2  # http://docs.sqlalchemy.org/en/latest/changelog/index.html
netifaces>=0.10,<0.11  # https://bitbucket.org/al45tair/netifaces/src/
pycrypto>=2.6,<2.7  # https://github.com/dlitz/pycrypto/blob/master/ChangeLog
pytz  # https://pypi.python.org/pypi/pytz
psutil>=5.4,<5.5  # https://github.com/giampaolo/psutil/blob/master/HISTORY.rst
six>=1.11,<1.12  # https://github.com/benjaminp/six/blob/master/CHANGES
requests>=2.18,<2.19  # https://pypi.python.org/pypi/requests
gevent>=1.2,<1.3  # http://www.gevent.org/changelog.html
werkzeug>=0.14,<0.15  # https://github.com/pallets/werkzeug/blob/master/CHANGES
patool>=1.12,<1.13  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
bcrypt>=3.1,<3.2  # https://github.com/pyca/bcrypt/
chardet>=3.0,<3.1  # https://pypi.python.org/pypi/chardet
ipaddress>=1.0,<1.1  # https://pypi.python.org/pypi/ipaddress
future>=0.15,<0.16  # https://pypi.python.org/pypi/future

# Only for some importers:
pyyaml>=3.12,<3.13  # http://pyyaml.org/wiki/PyYAML

# Only for printing:
pycups>=1.9,<1.10  # https://pypi.python.org/pypi/pycups
PyPDF2>=1.26,<1.27  # https://github.com/mstamy2/PyPDF2/blob/master/CHANGELOG