Environment markers in extras_require

setup.py

from setuptools import setup


install_requires = [
    'wheel',
    'PyQt5==5.7.1',
    'appdirs==1.4.0',
    'lxml==3.6.4',
    'pip-wrapper>=0.2.3,<0.3',
    # 'bad-python-version ; python_full_version!="3.5.3"',
]


setup(
    name='application-base',
    version='0.2',
    packages=[],
    install_requires=install_requires,
    extras_require={
        'release': [
            'awscli',
        ],
        'build': [
            'pyinstaller>=3.2,<3.3 ; sys_platform=="win32" or sys_platform=="linux"',

            # https://github.com/pyinstaller/pyinstaller/tarball/b78bfe530cdc2904f65ce098bdf2de08c9037abb
            'pyinstaller==3.3.dev0+b78bfe5 ; sys_platform=="darwin"',
            'requests',
        ]
    }
)