diff --git a/mkClojureLib.nix b/mkClojureLib.nix
index 554a605..357c20f 100644
--- a/mkClojureLib.nix
+++ b/mkClojureLib.nix
@@ -4,13 +4,13 @@
 with lib;
 let
 
-  build-tools-deps = toEDN {
+  build-tools-deps = writeTextDir "deps.edn" (toEDN {
     aliases.build = {
       ns-build = "'build";
       replace-deps."'io.github.clojure/tools.build"."local/root" =
         "${build-tools-jar}";
     };
-  };
+  });
 
   classpath = clj-deps.makeClasspaths { };