diff --git a/mkClojureLib.nix b/mkClojureLib.nix
index 357496d..893e228 100644
--- a/mkClojureLib.nix
+++ b/mkClojureLib.nix
@@ -5,13 +5,15 @@
 with lib;
 let
 
-  build-tools-deps = writeTextDir "deps.edn" (toEDN {
+  pthru = o: builtins.trace o o;
+
+  build-tools-deps = writeTextDir "deps.edn" (pthru (toEDN {
     aliases.build = {
       ns-build = "'build";
       replace-deps."'io.github.clojure/tools.build"."local/root" =
         "${build-tools-jar}";
     };
-  });
+  }));
 
   classpath = clj-deps.makeClasspaths { };