> On 19 May 2015, at 14:55, Andy Bierman <[email protected]> wrote:
>
> Hi,
>
> RFC 6020, sec. 7.1.5 has this sentence:
>
> Multiple revisions of the same module MUST NOT be imported.
>
> I expect the new RFC will contain a complete explanation why
> this MUST NOT is wrong and needs to be changed.
It’s not wrong but without this restriction a data modeller can use some
typedefs/groupings from a new revision and isn’t forced to upgrade everything
to the new revision at the same time. It was you who advocated this option in
Dallas:
AB: I agree with Martin that the ripple effect is a problem. When
you want to use a new version of a module, you have to update
everything else that you use from the same module.
> I would expect that multiple implementation examples of this
> approach can be cited, as proof that the new solution already works
> (before it is standardized).
It will be implemented in pyang, including the mapping to DSDL schemas.
Lada
>
>
> Andy
>
>
>
> On Tue, May 19, 2015 at 2:59 AM, Juergen Schoenwaelder
> <[email protected]> wrote:
>> Hi,
>>
>> after long discussions in physical meetings, virtual meetings, and on
>> the mailing list, I believe we have reached rough consensus to adopt
>> Y45-04 in order to resolve import ambiguities (aka typedef drift and
>> grouping drift) and we will leave it to YANG extensions (to be worked
>> on in the future) to provide means to define explicit conformance
>> requirements (instead of trying to derive conformance requirements
>> from import relationships alone). A recent poll of core contributors
>> on this issue can be found here:
>>
>> http://www.ietf.org/mail-archive/web/netmod/current/msg12560.html
>>
>> Please speak up by Monday 2015-05-25 if you disagree with this
>> proposal and your position is not yet included in the email message
>> pointed to above.
>>
>> For more details, see the issues list available here:
>>
>> http://svn.tools.ietf.org/svn/wg/netmod/yang-1.1/
>>
>> /js
>>
>> --
>> Juergen Schoenwaelder Jacobs University Bremen gGmbH
>> Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany
>> Fax: +49 421 200 3103 <http://www.jacobs-university.de/>
>>
>> _______________________________________________
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>
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