Mark AutoDeriveTypeable as deprecated

Test Plan: validate

Reviewers: bgamari, alpmestan

Reviewed By: alpmestan

Subscribers: rwbarton, thomie, carter

GHC Trac Issues: #15342

Differential Revision: https://phabricator.haskell.org/D4933

compiler/main/DynFlags.hs

@@ -4115,7 +4115,10 @@ xFlagsDeps = [
   flagSpec "AlternativeLayoutRuleTransitional"
                                               LangExt.AlternativeLayoutRuleTransitional,
   flagSpec "Arrows"                           LangExt.Arrows,
-  flagSpec "AutoDeriveTypeable"               LangExt.AutoDeriveTypeable,
+  depFlagSpecCond "AutoDeriveTypeable"        LangExt.AutoDeriveTypeable
+    id
+         ("Typeable instances are created automatically " ++
+                     "for all types since GHC 8.2."),
   flagSpec "BangPatterns"                     LangExt.BangPatterns,
   flagSpec "BinaryLiterals"                   LangExt.BinaryLiterals,
   flagSpec "CApiFFI"                          LangExt.CApiFFI,

docs/users_guide/glasgow_exts.rst

@@ -4453,7 +4453,7 @@ Deriving ``Data`` instances
 
 .. extension:: DeriveDataTypeable
     :shortdesc: Enable deriving for the Data class.
-       Implied by :extension:`AutoDeriveTypeable`.
+       Implied by (deprecated) :extension:`AutoDeriveTypeable`.
 
     :since: 6.8.1
 

testsuite/tests/dependent/should_compile/dynamic-paper.hs

@@ -7,7 +7,7 @@ Stephanie Weirich, Richard Eisenberg, and Dimitrios Vytiniotis, 2016. -}
 {-#  LANGUAGE RankNTypes, PolyKinds, TypeOperators,
              ScopedTypeVariables, GADTs, FlexibleInstances,
              UndecidableInstances, RebindableSyntax,
-             DataKinds, MagicHash, AutoDeriveTypeable #-}
+             DataKinds, MagicHash #-}
 {-# OPTIONS_GHC -Wno-missing-methods -Wno-redundant-constraints #-}
 {-# OPTIONS_GHC -Wno-simplifiable-class-constraints #-}
   -- Because we define a local Typeable class and have

testsuite/tests/deriving/should_compile/AutoDeriveTypeable.hs

-{-# LANGUAGE AutoDeriveTypeable #-}
 {-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE DataKinds          #-}
 {-# LANGUAGE PolyKinds          #-}

testsuite/tests/deriving/should_compile/T7710.hs

 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE TypeSynonymInstances #-}
-{-# LANGUAGE AutoDeriveTypeable #-}
 {-# LANGUAGE TypeFamilies #-}
 
 module T7710 where

testsuite/tests/deriving/should_compile/T8950.hs

-{-# LANGUAGE AutoDeriveTypeable, DataKinds, StandaloneDeriving #-}
+{-# LANGUAGE DataKinds, StandaloneDeriving #-}
 
 module T8950 where
 

testsuite/tests/typecheck/should_compile/T10348.hs

-{-# LANGUAGE AutoDeriveTypeable, GADTs, DataKinds, KindSignatures, StandaloneDeriving, TypeOperators #-}
+{-# LANGUAGE GADTs, DataKinds, KindSignatures, StandaloneDeriving, TypeOperators #-}
 
 module T10348 where
 

testsuite/tests/typecheck/should_fail/T9999.hs

-{-# LANGUAGE AutoDeriveTypeable, PolyKinds, TypeFamilies, StandaloneDeriving #-}
+{-# LANGUAGE PolyKinds, TypeFamilies, StandaloneDeriving #-}
 
 module T9999 where