# The disk layout `router-install` creates, as a NixOS module: an ESP labelled
# `boot` and an ext4 root labelled `nixos`. Target configurations import this so
# the installed system finds its disks on any hardware.
{ lib, ... }:
{
  fileSystems."/" = {
    device = "/dev/disk/by-label/nixos";
    fsType = "ext4";
  };
  fileSystems."/boot" = {
    device = "/dev/disk/by-label/boot";
    fsType = "vfat";
    options = [ "umask=0077" ];
  };

  boot.loader.systemd-boot.enable = true;
  # The installer may run anywhere (even a BIOS-booted stick) and the firmware
  # may be reset: boot through the removable fallback path, not NVRAM entries.
  boot.loader.efi.canTouchEfiVariables = lib.mkDefault false;

  # Storage and USB controllers of common hardware, so the root is found on
  # an arbitrary box (and in VMs).
  boot.initrd.availableKernelModules = [
    "ahci"
    "nvme"
    "sd_mod"
    "sdhci_pci"
    "usb_storage"
    "xhci_pci"
    "virtio_blk"
    "virtio_pci"
  ];
  hardware.enableRedistributableFirmware = lib.mkDefault true;
}