Implement PEP 621 in setuptools -- Storing project metadata in pyproject.toml

[xmunoz]

setuptools does not yet allow project creators to use the new pyproject.toml standard configuration file to configure setuptools behavior. This distracts and confuses package creators, and prevents platforms and tools from depending on the presence of standard pyproject.toml metadata in packages. We'd like to implement pyproject.toml configuration support in setuptools. This requires backend development work, technical writing, and coordination and publicity work among Python users.

PEP: https://www.python.org/dev/peps/pep-0621/

[pradyunsg]

This likely needs a title change to mention setuptools.

[JulienPalard]

It's being worked on here pypa/setuptools#2970

[JulienPalard]

It's merged and released in setuptools 61 \o/