Requirements files derived from setuptools install_requires extras_requires

[rpanderson]

Demonstration of how to use aliases to derive requirements files as alluded to in #1.

• requirements/default.txt contains ., referring to install_requires in setup.cfg.
• requirements/<some_extra>.txt contains .[<some_extra>], referring to install_requires and the relevant values in extras_require in setup.cfg.

Development requirements can then be installed using, e.g.:

$ pip install -r requirements/development.txt

Although I'm not sure how that's any different to:

$ pip install -e .[development]

Notes

• Extras can be combined, e.g. .[development,docs]
• Unlike explicitly created requirements files, all of the extras include the base requirements.