Hide/Move GHC.IOPort into other-modules.
base.cabal
has
90e69f779b6 (Tamar Christina 2019-06-16 21:54:23 +0100 355) -- GHC.IOPort -- TODO: hide again after debug
I hope the debugging is done now. Sadly that change made it into many releases.
EDIT: nothing on hackage uses that module: https://hackage-search.serokell.io/?q=GHC.IOPort