sePackage' :: String -> DynFlags -> DynFlags
exposePackage' p dflags
    = dflags { packageFlags = ExposePackage p : packageFlags dflags }

se
exposePackage' :: String -> DynFlags -> DynFlags
exposePackage' p dflags
    = dflags { packageFlags = ExposePackage p : packageFlags dflags }
exposePackage' p dflags
    = dflags { packageFlags = ExposePackage p : packageFlags dflags }