{ config, pkgs, lib, ... }: { boot.loader = lib.mkIf (config.physical && pkgs.stdenv.isLinux) { grub = { enable = true; # Not sure what this does, but it involves the UEFI/BIOS efiSupport = true; # Check for other OSes and make them available useOSProber = true; # Attempt to display GRUB on widescreen monitor gfxmodeEfi = "1920x1080"; # Install GRUB onto the boot disk # device = config.fileSystems."/boot".device; # Don't install GRUB, required for UEFI? device = "nodev"; # Display menu indefinitely if holding shift key extraConfig = '' if keystatus --shift ; then set timeout=-1 else set timeout=0 fi ''; }; # Always display menu indefinitely; default is 5 seconds # timeout = null; # Allows GRUB to interact with the UEFI/BIOS I guess efi.canTouchEfiVariables = true; }; }