diff --git a/nix/scope/default.nix b/nix/scope/default.nix
index cb3cfdb..3bce205 100644
--- a/nix/scope/default.nix
+++ b/nix/scope/default.nix
@@ -37,4 +37,6 @@ in
         mkdir -p $out/packages
       '';
     };
+
+    lib = callSubPackage ./lib.nix {};
   })
diff --git a/nix/scope/lib.nix b/nix/scope/lib.nix
new file mode 100644
index 0000000..e5c8e3e
--- /dev/null
+++ b/nix/scope/lib.nix
@@ -0,0 +1,22 @@
+{...}: let
+  overrideOpamDrv = drv: newArgs:
+    drv.override (prev: {
+      mkOpamDerivation = args: prev.mkOpamDerivation (args // newArgs);
+    });
+
+  overrideNativeDepends = drv: nativePackages:
+    overrideOpamDrv drv {
+      # Disable any guessed native dependencies.
+      guessedNativeDepends = [];
+
+      # Override the list of native dependencies.
+      nativeDepends = [
+        {
+          filter = {bool, ...}: bool true;
+          inherit nativePackages;
+        }
+      ];
+    };
+in {
+  inherit overrideOpamDrv overrideNativeDepends;
+}