[netmod] import-by-semver issue

[Andy Bierman <[e-mail]>]

Hi,

I am wondering if there are implementations of this draft:

https://tools.ietf.org/html/draft-verdt-netmod-yang-semver-00


Specifically, implementation of the  'version' extension

https://tools.ietf.org/html/draft-verdt-netmod-yang-semver-00#section-3


IMO it is a really bad idea to put the semantics of how to import modules
in one of the modules that is imported.  Your example shows ietf-semver
imported first with no extension, but it could be last with a version
extension.

          // all other imports, then last....

    import ietf-semver {

      prefix "semver";

      semver:version 1.1.2;

    }


Translation unit parsing is something that needs to be built into the
compiler.
This should be part of YANG 1.2 if it is done.


  import example-module {

     prefix exmod;
     version 1.2.0+;
   }


To a compiler writer, the difference is huge. (ietf-semver extensions need
to
be built-in statements in YANG, at least 'version')


BTW, all the import examples are missing the mandatory prefix-stmt


Andy