[Python-Dev] Edits to Metadata 1.2 to add extras (optional dependencies)

Tue Aug 28 06:15:52 CEST 2012

Daniel Holth wrote:
> I don't know of a tool that doesn't reliably ignore extra fields, but
> I will put you down as being in favor of an X- fields paragraph:
>> Extensions (X- Fields)
> ::::::::::::::::::::::
>> Metadata files can contain fields that are not part of
> the specification, called *extensions*. These fields start with
> with `X-`.

See RFC 6648 for why such X-fields may not be a good idea:
 http://tools.ietf.org/html/rfc6648