{ pkgs, ... }:
{
  boot = {
    kernelPackages = pkgs.linuxPackages_latest;
    kernel.sysctl."vm.max_map_count" = 2147483642;       
    initrd = {
      systemd = {
        enable = true;
        services.root-reset = {
          description = "Reset root and snapshot last boot";
          wantedBy = [ "initrd.target" ];
          after = [ "dev-${config.networking.hostName}-root.device" ];
          before = [ "sysroot.mount" ];
          unitConfig.DefaultDependencies = "no";
          serviceConfig.Type = "oneshot";
          script = ''
            mkdir -p /mnt
            mount /dev/${config.networking.hostName}/root /mnt

            if [[ -e /mnt/prev ]]; then
              btrfs subvolume delete /mnt/prev
            fi

            btrfs subvolume snapshot /mnt/root /mnt/prev

            btrfs subvolume list -o /mnt/root | cut -f9 -d' ' | while read subvolume; do
              btrfs subvolume delete "/mnt/$subvolume"
            done

            btrfs subvolume delete /mnt/root
            btrfs subvolume create /mnt/root

            umount /mnt
          '';
        };
      };
    };
  };
}