diff --git a/pkgs/build-support/package/make-package.nix b/pkgs/build-support/package/make-package.nix
index 6a370f07c974d..8b19e1ee344bd 100644
--- a/pkgs/build-support/package/make-package.nix
+++ b/pkgs/build-support/package/make-package.nix
@@ -61,6 +61,8 @@ let
         deps = old.deps // f old.deps;
       });
 
+      internals = this;
+
       # FIXME: Use `toExtension f`?
       # TODO: Support legacy attrs like passthru?
       overrideAttrs = f: