Also rename deprecated `hardware.nvidia.optimus_prime.*' to `hardware.nvidia.prime.*' since NixOS 20.09.
> The hardware.nvidia.optimus_prime.enable service has been renamed to
> hardware.nvidia.prime.sync.enable and has many new enhancements.
> Related nvidia prime settings may have also changed.
See https://nixos.org/manual/nixos/stable/release-notes.html#sec-release-20.09
- We should not enable canTouchEfiVariables by default as this
wears out the EFI storage.
- We should not set systemd-boot as default. This is up to the user to
decide. There are exceptions when hardware only supports specific
bootloaders so.
This is already used in XPS 15-9560, but instead of defining it in XPS
15-9560 let's create a separate profile and expose it for those who want
to disable their NVIDIA GPU.
1 default one, with nvidia working and intel working, needs optirun to
run application with nvidia
2 intel only, I am using this as my daily driver for long time, only
intel is turned on and nvidia is turned off and doesn't drain any
power.
3 nvidia only, intel is dissabled and nvidia is picked as default gpu,
no need to fiddle with optirun etc, good for gpu heavy application.
All these settings needs to reboot to work properly
