diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 2cda43d5632f..9952a6ae0623 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -115,8 +115,11 @@ let
       '' + lib.optionalString (hostPlatform.isDarwin && hostPlatform.isMacOS) ''
         export MACOSX_DEPLOYMENT_TARGET=${hostPlatform.darwinMinVersion}
       ''
-      # TODO this should be uncommented, but it causes stupid mass rebuilds. I
-      # think the best solution would just be to fixup linux RPATHs so we don't
+      # TODO this should be uncommented, but it causes stupid mass rebuilds due to
+      # `pkgsCross.*.buildPackages` not being the same, resulting in cross-compiling
+      # for a target rebuilding all of `nativeBuildInputs` for that target.
+      #
+      # I think the best solution would just be to fixup linux RPATHs so we don't
       # need to set `-rpath` anywhere.
       # + lib.optionalString targetPlatform.isDarwin ''
       #   export NIX_DONT_SET_RPATH_FOR_TARGET=1