net.nix: Add placeholder for network.lock

Author: roberth

nix/machine-resource.nix

@@ -6,7 +6,10 @@
 with lib;
 
 {
-  freeformType = lib.types.raw or lib.types.unspecified;
+  # A freeformType is probably not helpful because it may traverse into a
+  # machine config, triggering errors in attributes that should never be accessed,
+  # which results in very obscure errors.
+  # freeformType = lib.types.raw or lib.types.unspecified;
   options = {
 
   };

nix/net.nix

@@ -52,6 +52,11 @@ in
           Extra configurations to add to all resources.
         '';
       };
+      lock = mkOption {
+        # TBD
+        type = types.raw;
+        default = {};
+      };
     };
     resources = mkOption {
       default = { };