# Version constraints for pip installation.
#
# This file doesn't install any packages. It specifies version constraints
# that will be applied if a package is needed.
#
# When pinning something here, please provide an explanation of why.  Ideally,
# link to other information that will help people in the future to remove the
# pin when possible.  Writing an issue against the offending project and
# linking to it here is good.

# This package is a backport from python 3 that can only be installed in python 2.7
futures ; python_version == "2.7"
