diff --git a/pkgs/development/ruby-modules/bundled-common/default.nix b/pkgs/development/ruby-modules/bundled-common/default.nix
index 6aca502550b6..cd2f6f379efc 100644
--- a/pkgs/development/ruby-modules/bundled-common/default.nix
+++ b/pkgs/development/ruby-modules/bundled-common/default.nix
@@ -28,9 +28,18 @@
 
 assert name == null -> pname != null;
 
-with  import ./functions.nix { inherit lib gemConfig; };
-
 let
+  functions = import ./functions.nix { inherit lib gemConfig; };
+
+  inherit (functions)
+    applyGemConfigs
+    bundlerFiles
+    composeGemAttrs
+    filterGemset
+    genStubsScript
+    pathDerivation
+    ;
+
   gemFiles = bundlerFiles args;
 
   importedGemset = if builtins.typeOf gemFiles.gemset != "set"