can't install new extras for target package
How do I install extras_require field's packages in test target?
- test target is "Sphinx".
- The "Sphinx" in developing have
newextras_require field in setup.py that name is "websupport".
- If I install by hand, I'll invoke "pip install -e .[websupport]".
In this case,
deps = sphinx[websupport] in tox.ini will not bring the expected results because tox get "Sphinx" package from PyPI (not local test target), but "Sphinx" was uploaded at PyPI not have [websupport] extras_requires yet.