Just taking another approach on this: why do we have the restriction on circular imports? Is this really required? If not then this may be solved in another way too (but will take some time before it gets into the YANG compilers I'm afraid).
Best regards - Vriendelijke groeten, Bart Bogaert Broadband-Access System Architect Data Contact number +32 3 2408310 (+32 477 673952) NOKIA Copernicuslaan 50, 2018 Antwerp, Belgium Fortis 220-0002334-42 VAT BE 0404 621 642 Register of Legal Entities Antwerp << This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, you should delete this message. Any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited without the prior consent of its author. >> -----Original Message----- From: Martin Bjorklund [mailto:m...@tail-f.com] Sent: 26 August 2016 14:33 To: j.schoenwael...@jacobs-university.de Cc: Bogaert, Bart (Nokia - BE); netmod@ietf.org Subject: Re: [netmod] derived-from-or-self leads to circular import Juergen Schoenwaelder <j.schoenwael...@jacobs-university.de> wrote: > On Fri, Aug 26, 2016 at 12:43:04PM +0200, Martin Bjorklund wrote: > > Juergen Schoenwaelder <j.schoenwael...@jacobs-university.de> wrote: > > > On Fri, Jul 29, 2016 at 12:50:13PM +0000, Bogaert, Bart (Nokia - BE) wrote: > > > > > > [...] > > > > > > > In order to correctly compile (using confdc) we also need to > > > > import iana-entity for the identities defined in there. However > > > > this is leading a circular dependency: > > > > > > > > 1. Iana-entity imports ietf-entity (to 'resolve' > > > > entity-physical-class) > > > > > > > > 2. Ietf-entity imports iana-entity (to obtain the indentities defined > > > > in there) > > > > > > > > One way to solve this is to move the definition of > > > > entity-physical-class from ietf-entity to iana-entity which > > > > would resolve the fact that iana-entity requires an import of > > > > ietf-entity (ietf-entity needs to import iana-entity anyhow, so > > > > it can also pick the typedef from the same module too). > > > > > > I think moving the definition of entity-physical-class into > > > iana-entity makes sense. > > > > Ok. It feels a bit backwards to me though, but I can see the value > > of having the iana module self-contained. > > > > Well, it may look backwards if people want to reuse the base identity > but none of the IANA assigned identities - but then it might be good > if people at least look at IANA assigned identities. Or are there > other reasons why you think this may be looking 'backwards'? I makes ietf-entity dependent on iana-entity, since the base identity is defined in iana-entity. But OTOH, even if we solved that, ietf-entity is dependent on iana-entity b/c of the value 'sensor'. So in this case it is probably fine, but I'm not sure about the general idea. /martin
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