On Tue, May 11, 2021 at 10:59:51AM +0200, Magnus Hagander wrote: > > That doesn't fundamentally make it impossible, you just have to add it > to the list of variables being copied over, wouldn't you? See > save_backend_variables()
Yes, I agree, and that's what I meant by "explicitly handled". The thing is that I don't know if that's the best way to go, as it doesn't solve the "is it actually enabled" and/or "which implementation is used". At least the patch I sent, although it's totally a hack, let you know if compute_query_id is enabled or not. I'm fine with implementing it that way, but only if there's a consensus.
