{ lib, config, ... }: {
	options = {
		grub.enable = lib.mkEnableOption "enables grub bootloader";
		grub.mode = lib.mkOption {
			type = lib.types.enum [ "efi" "bios" ];
			default = "efi";
			description = "grub mode efi or bios";
		};
		grub.biosDevice = lib.mkOption {
			type = lib.types.str;
			description = "device to install grub on";
		};
	};

	config = lib.mkIf config.grub.enable {
		boot.loader = {
			grub = {
				enable = true;
				efiSupport = config.grub.mode == "efi";
				efiInstallAsRemovable = config.grub.mode == "efi";
				device = if config.grub.mode == "bios" then config.grub.biosDevice else "nodev";
			};
			efi.efiSysMountPoint = "/boot/efi";
		};
	};
}