Yanglint validation issues with the union of identityref

[italobusi]

When preparing JSON examples (see PR #76 ), the following when statement failed validation with yanglint:

                "derived-from-or-self(../nwi:class,
                'nwi:transceivers-module')";

The issue could have been fixed only by updating the component class definition as:

            leaf class {
              type identityref {
                base ianahw:hardware-class;
              }
              config false;
              mandatory true;
              description
                "The type of the component.";
            }

This issue needs further investigation:

• is it a yanglint implemenation issue or a bug in the current YANG model?
• is there any alternative solution to avoid the use of the union type?

[italobusi]

2025-01-08 Base Network Inventory weekly call

Agreed to mark it as priority 1 (changing the data type will be an NBC change)

• @prmanna ask Netmod WG for some feedbacks about whether is an a yanglint implementation issue or a YANG modelling issue

[prmanna]

Raised an issue in libyang for their input.

[italobusi]

2025-01-29 Base Network Inventory weekly call

It seems a tooling issue: if the transceiver-module identity is moved to iana-hardware module the error message no longer appears

• Prasenjit: check with the yanglint developers

Post Meeting Note: already done in #78 (comment)