Auto-connection request for `arduino-mhall` serial-port

Thanks for the clarification. Stupid question; what is the snap declaration? I thought this was snap.yaml in the snap package?

So Publishers only need to request greedy plugs on the forum here? and snaps don’t need to be updated? Does this mean that the information provided in Plug/slot declaration rules: greedy plugs is only relevant to actual snapd developers or people managing the snapcraft store?