snmp.yml reuse if_mib for different auth.community

I want to make a copy of if_mib of snmp.yml but with a different "auth.community" setting.

So far I've managed to survive without using the SNMP generator :D

I tried for a while and failed to with some yaml merging to make something like:

if_mib_my_module:
  << : *if_mib
  auth:
    community: "CVE-1999-0517"

So right now I'm planning to:

• copy upstream https://github.com/prometheus/snmp_exporter/blob/main/snmp.yml into my ansible repo
• manually maintain a copy of if_mib with my extra auth.community inside

Does someone have a better solution?