MacBook 12 inch 2015 is no longer supported. Disappointing, it would probably run fine on mine.

I see their logic -- that was a famously underpowered computer (but delightfully compact). The same-year MacBook Air[1] blows its specs away, for instance.

[1]: https://support.apple.com/kb/SP714?locale=en_US

It looks like this year they've finally dropped support for all nVidia equipped hardware.

My Late 2014 15" MacBook Pro is finally at the end of it's run.