what happened to the sun2 integration? i was using it in my old setup, and now i can’t find it 
It’s in HACS.
It is a custom repository and therefore not listed in the searchable integrations in HACS.
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if i had found it in HACS, this thread wouldn’t exist.
It wasn’t clear in your opening post that you knew it was a HACS integration.
Equally, I had forgotten it was a custom reopository. @WallyR’s answer is the right one,