diff --git a/default.nix b/default.nix
index db604ee..6119b2b 100644
--- a/default.nix
+++ b/default.nix
@@ -28,8 +28,29 @@ let
 
   modules = import ./modules;
 
+  # legacy support for buildResources
+  buildResources = {
+    configuration ? {},
+    writeJSON ? true,
+    writeHash ? true
+  }: let
+    evaled = evalModules {
+      modules = [
+        configuration
+        modules.legacy
+      ];
+    };
+
+    generated = evaled.config.kubernetes.generated;
+
+    result =
+      if writeJSON
+      then pkgs.writeText "resources.json" (builtins.toJSON generated)
+      else generated;
+  in result;
+
   kubenix = {
-    inherit evalModules modules;
+    inherit evalModules buildResources modules;
 
     lib = kubenixLib;
   };