hosts/bastille: fix root password warning

Author: mehbark

hosts/bastille/blade.nix

@@ -1,4 +1,4 @@
-{ modulesPath, pkgs, ... }: {
+{ modulesPath, pkgs, lib, ... }: {
   imports = [
     (import ../common/k3s.nix {})
     ../common/nix.nix
@@ -7,6 +7,10 @@
     (modulesPath + "/installer/netboot/netboot-minimal.nix")
   ];
 
+  # when making the ISO, the initialHashedPassword is set to "" for some reason
+  # we already set a hashed password, so null this
+  users.users.root.initialHashedPassword = lib.mkForce null;
+
   environment.systemPackages = [
     pkgs.fastfetch
   ];