[Distutils] RFC PEP 386 : Version comparisons

[P.J. Eby]

At 09:28 AM 7/6/2009 +0100, Floris Bruynooghe wrote:
>On Sun, Jul 05, 2009 at 02:40:37PM -0400, P.J. Eby wrote:
> > At 02:12 PM 7/4/2009 -0400, Tres Seaver wrote:
> >> - -1.  I would rather exclude some use cases (post releases), than drop
> >> standardization altogether.
> >
> > And some people are the exact opposite, which means there's no
> > consensus...  and thus no way to proceed.
>
>I was under the impression that .devX and .postX where accepted, but
>it got messy when .postX.devX got used.  But AFAIC (I'm not re-reading
>the entire thread now) it was stated that .postX.devX was not actually
>required (and if it was required just allowig exactly one each and it
>that order was sufficient).

Not quite; it's .devX.postX that's not required.

It should be possible to implement all the development schemes I know 
of using something like:

     X(.X?)*([abc]X?)?(.postX?)?(.devX?)?

where "X" expands to (\d+).

Which is why I don't really understand what all the fuss is 
about.  If you're going to support a/b/c, you're not going to be able 
to do straight string comparison anyway, so there's little loss in 
allowing ONE post tag and ONE dev tag to be used as well.