nix/module/Bootloader.nix

{ ... }: {
	# Enable non-free firmware.
	hardware.enableRedistributableFirmware = true;

	# Configure bootloader.
	boot = {
		loader = {
			efi.canTouchEfiVariables = true;

			# Use systemd to boot.
			systemd-boot = {
				enable = true;

				# Limit the amound of generations availabe for rollback.
				# This helps to save storage space.
				configurationLimit = 10;
			};
		};

		# Mount /tmp on tmpfs.
		tmp.useTmpfs = true;

		initrd = {
			# Don't really know if I need it. Kept from hardware-configuration.
			kernelModules = [ "dm-snapshot" ];

			# Kernel modules available for all the hosts.
			availableKernelModules = [
				"ahci"
				"ata_piix"
				"mptspi"
				"nvme"
				"sd_mod"
				"sr_mod"
				"usb_storage"
				"usbhid"
				"xhci_pci"
			];
		};
	};
}