Need to add requrments note in Nix install page wiki

[tempergate]

Page
https://wiki.hyprland.org/Nix/Hyprland-on-NixOS/
do not contain notes, that development brunch request to update the whole system to 'unstable' branch.
Otherwise it crashes on 'stable' version hyprwm/Hyprland#9492

[fufexan]

The information is there, in the Flakes tab. It requires you to change the system's mesa package.