Re: [netmod] YANG next

On Thu, 2019-07-25 at 12:56 +0000, Rob Wilton (rwilton) wrote:
> I also think that there is significant value to splitting the NETCONF and XML
> specification out of RFC 7950 (but keeping XML examples).  I think that this
> may be beneficial to YANG’s longevity, and I’m sure that it would make it
> easier to maintain and extend the NETCONF/RESTCONF/YANG document set in
> future.

Agreed. And if we do it without changing YANG (except for absolute musts, if
there are any), we can reasonably expect that it can be done relatively quickly.

Lada

>  
> Thanks,
> Rob
>  
>  
> From: netmod <netmod-bounces@ietf.org> On Behalf Of Andy Bierman
> Sent: 24 July 2019 14:32
> To: Kent Watsen <kent@watsen.net>
> Cc: netmod@ietf.org
> Subject: Re: [netmod] YANG next
>  
>  
>  
> On Wed, Jul 24, 2019 at 10:28 AM Kent Watsen <kent@watsen.net> wrote:
> >  
> > > > > So you want to work on YANG 1.2, but just the parts you want to
> > > > > change? ;-)
> > > > 
> > > > I am actually fine with not doing any changes to YANG 1.1 at all, except
> > > > perhaps
> > > > bug fixes. This doesn't necessarily mean closing the NETMOD WG, it would
> > > > IMO be
> > > > immensely useful to rewrite the language specification and remove
> > > > NETCONF- and
> > > > XML-specific part.
> > > 
> > > +1. There are plenty of ambiguities and NETCONF/XML pollution in the
> > > spec. Having the specifications in a DAG would be immensely useful :)
> > 
> >  
> > Agreed and I should've mentioned before that Martin said in Prague that he'd
> > already started this effort, seeing it as a necessary pre-step before making
> > other changes.  I'm unsure if the intention is to release this by itself as
> > an RFC 7950 bis but, if looking for a minimal change, that might be it.  The
> > next rung up would be to just add clarifications.  The next rung up from
> > there would be to add only backwards-compatible changes (currently targeted
> > by [1]).  The last rung being to also target NBC changes (there's no
> > consensus to do this).
> >  
> 
>  
> This WG sure likes to spend time refactoring documents.
> Moving lots of text will create bugs and strong coupling, and only help the
> standards purists.
> It will be a lot of work for the WG and IESG to review such a massive document
> split,
> and in the end we have no improvement in YANG, just more RFCs to read.
>  
> Andy
>  
> > [1] https://github.com/netmod-wg/yang-next/projects/2
> >  
> > Kent 
> >  
> >  
> 
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Ladislav Lhotka
Head, CZ.NIC Labs
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