I've got a confirmation that runtime should work fine (bug #831098), so let's do it. Please just check that everything builds as expected with USEs notably given the archives have some different files between amd64 and arm64, I'll see what I can do with qemu if anything comes up. Only looking at 0/470+0/510 (production branch and latest). 0/460+0/495 are due for removal in time, and 0/390+0/vulkan have no arm64 support.
Unable to check for sanity: > package masked: x11-drivers/nvidia-drivers-470.94, by keywords: -arm64
CC'ing manually, figures nattka doesn't like the -*
(I'll look to unmask video_cards_nvidia USE where possible after too)
Unable to check for sanity: > package masked: x11-drivers/nvidia-drivers-470.103.01, by keywords: -arm64
dropping 470 due to issues, not worth looking into it
arm64 done all arches done