if sys.version_info < (2, 7):

    requirements.append("importlib==1.0.1")

    requirements.append("unittest2")

    requirements.append("argparse")

if not is_windows:

    requirements.append("py-bcrypt>=0.3.0,<=0.4")

if sys.version_info < (2, 7):

    # Dulwich 0.9.6 and later do not support Python2.6.

    requirements.append("dulwich>=0.9.3,<=0.9.5")