ruined every thing again

nixos/module/hectic/hardware/hetzner-cloud.nix

@@ -11,19 +11,69 @@
 }: let
   cfg = config.hectic.hardware.hetzner-cloud;
 in {
-  options.hectic.hardware.hetzner-cloud.enable = lib.mkEnableOption "Enable hetzner-cloud hardware configurations";
+  options.hectic.hardware.hetzner-cloud = {
+    enable = lib.mkEnableOption "Enable hetzner-cloud hardware configurations";
+    #bootParUuid = lib.mkOption {
+    #  type = with lib.types; nullOr oneOf [
+    #    (lib.types.strMatching "^[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}$")
+    #    (lib.types.strMatching "^[0-9a-fA-F-]{36}$")
+    #  ];
+    #  default = null;
+    #  example = "5628-19B6";
+    #  description = ''
+    #    boot partition uuid if it is null 
+    #    then will use "/dev/sda15" (default hetzner cloud boot device)
+    #  '';
+    #};
+    device = lib.mkOption {
+      type = lib.types.str;
+      default = "/dev/sda/";
+      example = "/dev/disk/by-uuid/f184a16b-6eca-41cb-b48a-ff37cdce1d79";
+      description = ''
+        boot device uuid 
+	if it is null then will use "/dev/sda" 
+	/dev/sda - default hetzner cloud device
+	!! But can changes on reboot if server have volumes
+	!! So use IDs
+      '';
+    };
+  };
 
   config = lib.mkIf cfg.enable {
-    boot.loader.grub.device = "/dev/sda";
+    boot.loader.grub.device = cfg.device;
     boot.initrd.availableKernelModules = [
       "ata_piix"
       "uhci_hcd"
       "xen_blkfront"
     ] ++ (if pkgs.system != "aarch64-linux" then [ "vmw_pvscsi" ] else []);
     boot.initrd.kernelModules = ["nvme"];
-    fileSystems."/" = {
-      device = "/dev/sda1";
-      fsType = "ext4";
+
+    disko.devices.disk.vda = {
+      device = cfg.device;
+      type = "disk";
+      content = {
+        type = "gpt";
+        partitions = {
+          ESP = {
+            size = "512M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+          root = {
+            size = "100%";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/";
+            };
+          };
+        };
+      };
     };
   };
 }