[Distutils] Adding Provides-Extra as an edit to PEP 345

[Daniel Holth]

On Mon, Jul 9, 2012 at 10:28 PM, Daniel Holth <dholth at gmail.com> wrote:
> New draft up at https://bitbucket.org/dholth/python-peps/changeset/537e83bd4068
>
> Adds Provides-Extra: (with longer explanation), Setup-Requires-Dist:

To review, Setup-Requires-Dist (only installed for setup.py to run,
called build requirements in some systems) is a completely different
feature than Provides-Extra (for example when code uses 'try: import
somepackage; except: don't offer a feature; called optional_features
in CPAN; similar to Debian 'Suggests' dependencies).