Dependency links for extras_require in setup.py

Question

1. Is there a way to process dependency links automatically when installing a package with extras, without having to call --process-dependency-links as it is the case with install_requires?

   pip install -e .[extra] --process-dependency-links
   

   I need this because the dependency is only located on a private git repo.

2. Is it possible to install extras using python setup.py install?

3. Is --process-dependency-links still to be considered as it is deprecated? I am not sure about the status here.

Answer 1

1. Yes, you no longer need --process-dependency-links if you use extras_require.

Tested with pip version 19.3.1

Example:

$ pip install -e .[graphs]

# setup.py  

from setuptools import setup
setup(
    name='myservice',
    version='0.1.0',
    install_requires=[
        'requests',
    ],
    extras_require={
        'graphs': [
            'graphcommons @ git+ssh://[email protected]/graphcommons/graphcommons-python@master',
        ],
    },
)

By using ssh protocol (instead of https) to access git repo, you can install from your private repos.

2. Not sure about python setup.py install but pip install .[extras] should be good enough?

3. Yes, in pip version 19.