{ config, lib, pkgs, ... }:
let
  fsOptions = [ "noatime" "ssd" "compress=zstd" ];
in
{
  boot.initrd.luks = {
    devices =
      # allow discards on all devices
      builtins.mapAttrs (name: val: val // {allowDiscards = true;})
      {
        "system".device = "/dev/disk/by-uuid/1838cdc5-9b0b-4c46-9f23-9465549eeb92";
        "cryptswap".device =  "/dev/disk/by-uuid/ded7d649-ab3a-42ee-ae4a-f8c4ba029e9c";
      };
      reusePassphrases = true;
  };

  fileSystems = {
    "/" = {
      device = "/dev/disk/by-uuid/22388786-4285-403b-9994-e9aae1f11172";
      fsType = "btrfs";
      options = fsOptions ++ [ "subvol=nixos_root" ];
    };

    "/home" = {
      device = "/dev/disk/by-uuid/22388786-4285-403b-9994-e9aae1f11172";
      fsType = "btrfs";
      options = fsOptions ++ [ "subvol=home" ];
    };

    "/boot" = {
      device = "/dev/disk/by-uuid/AF8E-E9E6";
      fsType = "vfat";
      options = [ "discard" ];
    };
  };

  services.fstrim.enable = true;
  services.btrfs.autoScrub = {
    enable = true;
    fileSystems = [ "/" "/home" ];
  };

  boot.tmp.useTmpfs = true;
}