setup(
    ...
    install_requires = [
        # public dependencies
        'argparse==1.2.1',
        'beautifulsoup4==4.1.3',
        'lxml==3.1.0',
        'mongoengine==0.8.2',
        'pymongo==2.5.2',
        'requests==1.1.0',
        'Cython==0.18',
        # private dependencies
        'myprivatepackage1',
        'myprivatepackage2'
    ],
    dependency_links=['http://pypi.myserver.com/packages'],
    ...
)