diff --git a/mkClojureLib.nix b/mkClojureLib.nix
index 893e228..2c2b1c8 100644
--- a/mkClojureLib.nix
+++ b/mkClojureLib.nix
@@ -7,13 +7,15 @@ let
 
   pthru = o: builtins.trace o o;
 
-  build-tools-deps = writeTextDir "deps.edn" (pthru (toEDN {
+  build-tools-edn = toEDN {
     aliases.build = {
       ns-build = "'build";
       replace-deps."'io.github.clojure/tools.build"."local/root" =
         "${build-tools-jar}";
     };
-  }));
+  };
+
+  build-tools-deps = writeTextDir "deps.edn" (pthru build-tools-edn);
 
   classpath = clj-deps.makeClasspaths { };