https://wiki.archlinux.org/title/HDR
Arch wiki says NVIDIA should now work, too.
As of Mesa 25 it should just work. Even if you’re on a distro that doesn’t have it working yet, seems HDR on NVIDIA is not far off, and can be made to work right now if you know how with arch.
For my setup, I literally just enable the setting in the KDE display settings.
















Nah.
Just do what Valve did with Wine.
Officially fork and contribute to Heroic.