Ryan Scott writes:

I have one major feature planned: -XDerivingVia. I haven't made a patch yet, since the idea itself is still technically going through the proposal process at [1]. But the feedback seems pretty positive, so I think I'll submit it to the committee next week for final consideration.

There is an implementation that's 99% already at [2], so there shouldn't be much of a delay in getting it to Phabricator once the committee gives the go-ahead.

Right, I think this can be made to work assuming there is no objection from the devops committee. Thanks for the heads-up! Cheers, - Ben