fix again

nix/flakeModule.nix

@@ -94,6 +94,7 @@ in
       sops_secrets_map =
         host:
         lib.mkMerge (
+          lib.concatLists (
             lib.mapAttrsToList (
               name: value:
               let
@@ -125,6 +126,7 @@ in
                 )
               )
             ) secret_map
+          )
         );
     in
     {