fixup! Add PackageInfos_ (haskell#3909)

Author: blackheaven

Cabal/src/Distribution/Simple/Build/PackageInfosModule/Z.hs

@@ -15,6 +15,8 @@ data Z = Z
 
 render :: Z -> String
 render z_root = execWriter $ do
+  tell "{-# OPTIONS_GHC -fno-warn-missing-import-lists #-}\n"
+  tell "{-# OPTIONS_GHC -w #-}\n"
   tell "module PackageInfos_"
   tell (zPackageName z_root)
   tell " (\n"