Help with build ordering issue

Hi, @Bodigrim is working on a patch (https://phabricator.haskell.org/D4212) to fix #14170. The build fails because of interface file errors: "bad interface file" for GHC.Natural and "failed to load interface" for GHC.Types. I suspect it is a wired-in module build ordering issue but I haven't been able to help fixing it. If anyone with more insights could help it would be much appreciated! Thanks, Sylvain