{
  config,
  lib,
  ...
}:
with lib; let
  cfg = config.local.boot.stack.btrfsToplevelMultidrive;
in {
  options.local.boot.stack.btrfsToplevelMultidrive = {
    enable = mkEnableOption "filesystem stack: persistent btrfs toplevel with optional hdd drive";

    toplevel = {
      device = mkOption {
        type = types.str;
      };

      ssd = mkOption {
        type = types.bool;
      };

      snapshot = mkOption {
        type = types.bool;
        default = false;
      };

      root = mkOption {
        type = types.str;
      };

      pivot = mkOption {
        type = types.str;
        default = "/";
      };
    };

    secondary = {
      device = mkOption {
        type = types.str;
      };

      ssd = mkOption {
        type = types.bool;
      };

      snapshot = mkOption {
        type = types.bool;
        default = false;
      };

      home = mkOption {
        type = types.str;
      };

      pivot = mkOption {
        type = types.str;
        default = "/";
      };
    };
  };

  config = mkIf cfg.enable {
    local.btrfs = {
      mounts = {
        "/" = {
          inherit (cfg.toplevel) device ssd;
          subvol = cfg.toplevel.root;
        };

        "/toplevel" = {
          inherit (cfg.toplevel) device ssd;
          subvol = cfg.toplevel.pivot;
        };

        #FIXME: Este nombre es legacy
        "/hdd" = {
          inherit (cfg.secondary) device ssd;
          subvol = cfg.secondary.pivot;
        };

        "/home" = {
          inherit (cfg.secondary) device ssd;
          subvol = cfg.secondary.home;
        };
      };

      snapper =
        optionalAttrs cfg.toplevel.snapshot
        {
          root = "/";
        }
        // optionalAttrs cfg.secondary.snapshot {
          home = "/home";
        };
    };

    # Asegura que /hdd sea descifrado antes de intentar montar /home
    fileSystems."/home".depends = ["/hdd"];
  };
}