flip back to unstable, fix kernel warning

modules/boot.nix

@@ -2,6 +2,7 @@
   config,
   lib,
   libS,
+  pkgs,
   ...
 }:
 
@@ -34,7 +35,7 @@ in
   config.boot = lib.mkIf cfg.default {
     supportedFilesystems = [ cfg.filesystem ];
     tmp.useTmpfs = true;
-    kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
+    kernelPackages = pkgs.linuxPackages_6_10;
     kernelParams =
       [ "nordrand" ]
       ++ lib.optional (cfg.cpuType == "amd") "kvm-amd"