Code review comment for ~slyon/snappy-hwe-snaps/+git/network-manager:slyon/drop-vendorized-netplan

Awesome, thanks for this! However, before merging we need to add a dependency so newer versions of the NM snap can be installed only for snapd with the interface change, like:

assumes:
  - snapd<version>

But we cannot really do this until snapd with the change has landed in the stable channel. Meanwhile, I'm marking this as WIP to avoid accidental merges.