Merge remote-tracking branch 'origin/ghc-head' into HEAD

125 files changed, 125 insertions, 0 deletions

diff --git a/html-test/src/A.hs b/html-test/src/A.hs
index 606b0865..e2319041 100644
--- a/html-test/src/A.hs
+++ b/html-test/src/A.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module A where
 
 data A = A
diff --git a/html-test/src/B.hs b/html-test/src/B.hs
index 5fd69acd..ce7a945c 100644
--- a/html-test/src/B.hs
+++ b/html-test/src/B.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module B ( module A, test, reExport, X(..) ) where
 import A ( A(..), test2, reExport, X(..) )
 
diff --git a/html-test/src/Bold.hs b/html-test/src/Bold.hs
index 7ff28ef9..91bc6715 100644
--- a/html-test/src/Bold.hs
+++ b/html-test/src/Bold.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bold where
 -- | Some __bold text__.
 --
diff --git a/html-test/src/Bug1.hs b/html-test/src/Bug1.hs
index af1ed4d3..6df1b9e2 100644
--- a/html-test/src/Bug1.hs
+++ b/html-test/src/Bug1.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug1 where
 
 -- | We should have different anchors for constructors and types\/classes.  This
diff --git a/html-test/src/Bug1004.hs b/html-test/src/Bug1004.hs
index d789e77f..f2ee5f61 100644
--- a/html-test/src/Bug1004.hs
+++ b/html-test/src/Bug1004.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug1004 (Product(..)) where
 
 import Data.Functor.Product
diff --git a/html-test/src/Bug1033.hs b/html-test/src/Bug1033.hs
index fdf5a57e..4c80e672 100644
--- a/html-test/src/Bug1033.hs
+++ b/html-test/src/Bug1033.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE StandaloneDeriving #-}
 
diff --git a/html-test/src/Bug1035.hs b/html-test/src/Bug1035.hs
index 3516c08f..46a6dd1f 100644
--- a/html-test/src/Bug1035.hs
+++ b/html-test/src/Bug1035.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug1035 where
 
 data Foo = Bar
diff --git a/html-test/src/Bug1050.hs b/html-test/src/Bug1050.hs
index ea293e6e..1fe49ab7 100644
--- a/html-test/src/Bug1050.hs
+++ b/html-test/src/Bug1050.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE PolyKinds #-}
 {-# LANGUAGE RankNTypes #-}
diff --git a/html-test/src/Bug1054.hs b/html-test/src/Bug1054.hs
index c699f1fb..b05d79c0 100644
--- a/html-test/src/Bug1054.hs
+++ b/html-test/src/Bug1054.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug1054 where
 
 -- * Header with 'foo' link
diff --git a/html-test/src/Bug1063.hs b/html-test/src/Bug1063.hs
index c6d13a1f..d5b1c69f 100644
--- a/html-test/src/Bug1063.hs
+++ b/html-test/src/Bug1063.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
diff --git a/html-test/src/Bug1067A.hs b/html-test/src/Bug1067A.hs
index 57ab60b0..4523d838 100644
--- a/html-test/src/Bug1067A.hs
+++ b/html-test/src/Bug1067A.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# language PatternSynonyms #-}
 module Bug1067A ( Foo(P) ) where
 
diff --git a/html-test/src/Bug1067B.hs b/html-test/src/Bug1067B.hs
index f1a814df..b5ce67f6 100644
--- a/html-test/src/Bug1067B.hs
+++ b/html-test/src/Bug1067B.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# language PatternSynonyms #-}
 module Bug1067B ( pattern P ) where
 
diff --git a/html-test/src/Bug1103.hs b/html-test/src/Bug1103.hs
index 1f387e62..c790e8c1 100644
--- a/html-test/src/Bug1103.hs
+++ b/html-test/src/Bug1103.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE PolyKinds #-}
diff --git a/html-test/src/Bug195.hs b/html-test/src/Bug195.hs
index 14440e8d..304e0c2e 100644
--- a/html-test/src/Bug195.hs
+++ b/html-test/src/Bug195.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug195 where
 
 data T = A { someField :: () -- ^ Doc for someField of A
diff --git a/html-test/src/Bug2.hs b/html-test/src/Bug2.hs
index 9121922e..6dc79f46 100644
--- a/html-test/src/Bug2.hs
+++ b/html-test/src/Bug2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug2 ( x ) where
 import B
 x :: A
diff --git a/html-test/src/Bug201.hs b/html-test/src/Bug201.hs
index bf6cb9a9..caa92d95 100644
--- a/html-test/src/Bug201.hs
+++ b/html-test/src/Bug201.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- We test that leading whitespace gets properly dropped (or not!)
 -- from codeblocks
 module Bug201 where
diff --git a/html-test/src/Bug253.hs b/html-test/src/Bug253.hs
index 499f6cd4..29a3adc6 100644
--- a/html-test/src/Bug253.hs
+++ b/html-test/src/Bug253.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | This module tests that if we're trying to link to a /qualified/
 -- identifier that's not in scope, we get an anchor as if it was a
 -- variable. Previous behaviour was to treat it as a type constructor
diff --git a/html-test/src/Bug26.hs b/html-test/src/Bug26.hs
index b0483f03..8b9c4162 100644
--- a/html-test/src/Bug26.hs
+++ b/html-test/src/Bug26.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | This module tests the ‘@since …’ annotation.
 --
 -- @since 1.2.3
diff --git a/html-test/src/Bug280.hs b/html-test/src/Bug280.hs
index ac27e2e5..d53def96 100644
--- a/html-test/src/Bug280.hs
+++ b/html-test/src/Bug280.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-|
 Copyright: Foo,
            Bar,
diff --git a/html-test/src/Bug294.hs b/html-test/src/Bug294.hs
index 4f874705..922b8ee7 100644
--- a/html-test/src/Bug294.hs
+++ b/html-test/src/Bug294.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies, FlexibleInstances, GADTs #-}
 -- This tests that we are able to extract record selectors for
 -- associated types when the type itself is not exported. Making this
diff --git a/html-test/src/Bug298.hs b/html-test/src/Bug298.hs
index 07d6fa0c..7ab9d21b 100644
--- a/html-test/src/Bug298.hs
+++ b/html-test/src/Bug298.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- We introduced a regression in 2.14.x where we don't consider
 -- identifiers with ^ as valid. We test that the regression goes away
 -- here. It's a silly typo in the parser, really. Same with ★ which is a valid
diff --git a/html-test/src/Bug3.hs b/html-test/src/Bug3.hs
index 67e57892..1b7e5277 100644
--- a/html-test/src/Bug3.hs
+++ b/html-test/src/Bug3.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug3 where
 
 -- | /multi-line
diff --git a/html-test/src/Bug308.hs b/html-test/src/Bug308.hs
index 3adb3746..93ecffac 100644
--- a/html-test/src/Bug308.hs
+++ b/html-test/src/Bug308.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- From 2.14.x onwards we were forgetting to swallow ‘#’ as a special
 -- character resulting in broken anchors if they accured
 -- mid-paragraph. Here we check that anchors get generated as
diff --git a/html-test/src/Bug308CrossModule.hs b/html-test/src/Bug308CrossModule.hs
index 589aa69e..45c89040 100644
--- a/html-test/src/Bug308CrossModule.hs
+++ b/html-test/src/Bug308CrossModule.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- Just like Bug308 module but here we test that referring to anchors
 -- from other modules works.
 module Bug308CrossModule where
diff --git a/html-test/src/Bug310.hs b/html-test/src/Bug310.hs
index d2492dc0..c54eab81 100644
--- a/html-test/src/Bug310.hs
+++ b/html-test/src/Bug310.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE ExplicitNamespaces #-}
 module Bug310 ( type (+) ) where
 
diff --git a/html-test/src/Bug313.hs b/html-test/src/Bug313.hs
index 90d4d3b6..c076c5b8 100644
--- a/html-test/src/Bug313.hs
+++ b/html-test/src/Bug313.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | The first list is incorrectly numbered as 1. 2. 1.; the second example
 -- renders fine (1. 2. 3.).
 --
diff --git a/html-test/src/Bug335.hs b/html-test/src/Bug335.hs
index c1821dd0..45668307 100644
--- a/html-test/src/Bug335.hs
+++ b/html-test/src/Bug335.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- Tests for collapsable headers
 module Bug335 where
 
diff --git a/html-test/src/Bug4.hs b/html-test/src/Bug4.hs
index 425a77aa..3343e1b9 100644
--- a/html-test/src/Bug4.hs
+++ b/html-test/src/Bug4.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug4 where
 -- | don't use apostrophe's in the wrong place's
 foo :: Int
diff --git a/html-test/src/Bug458.hs b/html-test/src/Bug458.hs
index 6a3ac9a4..b0fefecf 100644
--- a/html-test/src/Bug458.hs
+++ b/html-test/src/Bug458.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug458 where
 
 -- | See the defn of @'⊆'@.
diff --git a/html-test/src/Bug466.hs b/html-test/src/Bug466.hs
index ec7cde2c..697f0f75 100644
--- a/html-test/src/Bug466.hs
+++ b/html-test/src/Bug466.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DataKinds, TypeFamilies, StarIsType #-}
 module Bug466 where
 
diff --git a/html-test/src/Bug546.hs b/html-test/src/Bug546.hs
index 4493b1d9..e1df6aca 100644
--- a/html-test/src/Bug546.hs
+++ b/html-test/src/Bug546.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug546 where
 
 -- |Test:
diff --git a/html-test/src/Bug548.hs b/html-test/src/Bug548.hs
index 652d3d32..c890a207 100644
--- a/html-test/src/Bug548.hs
+++ b/html-test/src/Bug548.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug548 (WrappedArrow(..)) where
 
 import Control.Applicative
diff --git a/html-test/src/Bug6.hs b/html-test/src/Bug6.hs
index 17411f31..de2874aa 100644
--- a/html-test/src/Bug6.hs
+++ b/html-test/src/Bug6.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | Exporting records.
 module Bug6( A(A), B(B), b, C(C,c1,c2), D(D,d1), E(E) ) where
 
diff --git a/html-test/src/Bug613.hs b/html-test/src/Bug613.hs
index effef695..3bdd0ac2 100644
--- a/html-test/src/Bug613.hs
+++ b/html-test/src/Bug613.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug613  where
 
 import Prelude (Either(Left, Right))
diff --git a/html-test/src/Bug647.hs b/html-test/src/Bug647.hs
index 4143092a..7f1b9544 100644
--- a/html-test/src/Bug647.hs
+++ b/html-test/src/Bug647.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug647 where
 
 class Bug647 a where
diff --git a/html-test/src/Bug679.hs b/html-test/src/Bug679.hs
index 0a321ec5..3cc2278f 100644
--- a/html-test/src/Bug679.hs
+++ b/html-test/src/Bug679.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 module Bug679 where
diff --git a/html-test/src/Bug7.hs b/html-test/src/Bug7.hs
index a07934c4..aeb7d96e 100644
--- a/html-test/src/Bug7.hs
+++ b/html-test/src/Bug7.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 -- | This module caused a duplicate instance in the documentation for the Foo
 -- type.
diff --git a/html-test/src/Bug745.hs b/html-test/src/Bug745.hs
index f26562c1..295ac59d 100644
--- a/html-test/src/Bug745.hs
+++ b/html-test/src/Bug745.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell, QuasiQuotes #-}
 
 module Bug574 where
diff --git a/html-test/src/Bug8.hs b/html-test/src/Bug8.hs
index 30afae1f..1b50ce9c 100644
--- a/html-test/src/Bug8.hs
+++ b/html-test/src/Bug8.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug8 where
 
 infix -->
diff --git a/html-test/src/Bug85.hs b/html-test/src/Bug85.hs
index e29b2662..53979aee 100644
--- a/html-test/src/Bug85.hs
+++ b/html-test/src/Bug85.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE GADTs, KindSignatures #-}
 module Bug85 where
 
diff --git a/html-test/src/Bug865.hs b/html-test/src/Bug865.hs
index 71a6add1..86627f8e 100644
--- a/html-test/src/Bug865.hs
+++ b/html-test/src/Bug865.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug865 where
 
 -- | An emphasized link [yes /this/ is emphasized while this is
diff --git a/html-test/src/Bug923.hs b/html-test/src/Bug923.hs
index bb5bca0a..1d24a9f6 100644
--- a/html-test/src/Bug923.hs
+++ b/html-test/src/Bug923.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE KindSignatures, FlexibleInstances, GADTs, DataKinds #-}
 module Bug923 where
 
diff --git a/html-test/src/Bug952.hs b/html-test/src/Bug952.hs
index 09b365e4..0840e46c 100644
--- a/html-test/src/Bug952.hs
+++ b/html-test/src/Bug952.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug952 where
 
 -- | See 'case', 'of', '--' compared to 'Q.case', 'Q.of', 'Q.--'
diff --git a/html-test/src/Bug953.hs b/html-test/src/Bug953.hs
index 63f2c45a..4ff3e8ae 100644
--- a/html-test/src/Bug953.hs
+++ b/html-test/src/Bug953.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bug953 where
 
 {- | A foo
diff --git a/html-test/src/Bug975.hs b/html-test/src/Bug975.hs
index 97ebabda..e55385c5 100644
--- a/html-test/src/Bug975.hs
+++ b/html-test/src/Bug975.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE ExplicitForAll #-}
 module Bug973 where
 
diff --git a/html-test/src/BugDeprecated.hs b/html-test/src/BugDeprecated.hs
index 7741786f..9dfef176 100644
--- a/html-test/src/BugDeprecated.hs
+++ b/html-test/src/BugDeprecated.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module BugDeprecated where
 
 foo :: Int
diff --git a/html-test/src/BugExportHeadings.hs b/html-test/src/BugExportHeadings.hs
index a5493a08..b664a448 100644
--- a/html-test/src/BugExportHeadings.hs
+++ b/html-test/src/BugExportHeadings.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- test for #192
 module BugExportHeadings (
 -- * Foo
diff --git a/html-test/src/Bugs.hs b/html-test/src/Bugs.hs
index e60bbe8f..aed716a4 100644
--- a/html-test/src/Bugs.hs
+++ b/html-test/src/Bugs.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Bugs where
 
 data A a = A a (a -> Int)
diff --git a/html-test/src/BundledPatterns.hs b/html-test/src/BundledPatterns.hs
index 443e64fa..420068ac 100644
--- a/html-test/src/BundledPatterns.hs
+++ b/html-test/src/BundledPatterns.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DataKinds, GADTs, KindSignatures, PatternSynonyms, TypeOperators,
              ViewPatterns #-}
 module BundledPatterns (Vec(Nil,(:>)), RTree (LR,BR)) where
diff --git a/html-test/src/BundledPatterns2.hs b/html-test/src/BundledPatterns2.hs
index 5e9a83a7..c4123535 100644
--- a/html-test/src/BundledPatterns2.hs
+++ b/html-test/src/BundledPatterns2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DataKinds, GADTs, KindSignatures, PatternSynonyms, TypeOperators,
              ViewPatterns #-}
 module BundledPatterns2 (Vec((:>), Empty), RTree(..)) where
diff --git a/html-test/src/ConstructorArgs.hs b/html-test/src/ConstructorArgs.hs
index 6b0da711..c3b848c3 100644
--- a/html-test/src/ConstructorArgs.hs
+++ b/html-test/src/ConstructorArgs.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE GADTs, PatternSynonyms #-}
 
 module ConstructorArgs (Foo(..), Boo(Foo, Foa, Fo, Fo'), pattern Bo, pattern Bo') where
diff --git a/html-test/src/ConstructorPatternExport.hs b/html-test/src/ConstructorPatternExport.hs
index 7897b4bc..aa2971d6 100644
--- a/html-test/src/ConstructorPatternExport.hs
+++ b/html-test/src/ConstructorPatternExport.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE PatternSynonyms #-}
 {-# LANGUAGE ExistentialQuantification #-}
 {-# LANGUAGE GADTs #-}
diff --git a/html-test/src/DefaultAssociatedTypes.hs b/html-test/src/DefaultAssociatedTypes.hs
index 6ad197d3..340742d3 100644
--- a/html-test/src/DefaultAssociatedTypes.hs
+++ b/html-test/src/DefaultAssociatedTypes.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DefaultSignatures, TypeFamilies #-}
 
 module DefaultAssociatedTypes where
diff --git a/html-test/src/DefaultSignatures.hs b/html-test/src/DefaultSignatures.hs
index 52d68a96..1b1b8257 100644
--- a/html-test/src/DefaultSignatures.hs
+++ b/html-test/src/DefaultSignatures.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DefaultSignatures #-}
 
 module DefaultSignatures where
diff --git a/html-test/src/DeprecatedClass.hs b/html-test/src/DeprecatedClass.hs
index 018904ab..357f64e4 100644
--- a/html-test/src/DeprecatedClass.hs
+++ b/html-test/src/DeprecatedClass.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedClass where
 
 -- | some class
diff --git a/html-test/src/DeprecatedData.hs b/html-test/src/DeprecatedData.hs
index c40ba122..f2324162 100644
--- a/html-test/src/DeprecatedData.hs
+++ b/html-test/src/DeprecatedData.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies #-}
 module DeprecatedData where
 
diff --git a/html-test/src/DeprecatedFunction.hs b/html-test/src/DeprecatedFunction.hs
index 8d626435..2c6418d3 100644
--- a/html-test/src/DeprecatedFunction.hs
+++ b/html-test/src/DeprecatedFunction.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedFunction where
 
 -- | some documentation for foo
diff --git a/html-test/src/DeprecatedFunction2.hs b/html-test/src/DeprecatedFunction2.hs
index bdbbf95c..fb4193f2 100644
--- a/html-test/src/DeprecatedFunction2.hs
+++ b/html-test/src/DeprecatedFunction2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedFunction2 where
 
 
diff --git a/html-test/src/DeprecatedFunction3.hs b/html-test/src/DeprecatedFunction3.hs
index ca719bda..4a286e0a 100644
--- a/html-test/src/DeprecatedFunction3.hs
+++ b/html-test/src/DeprecatedFunction3.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedFunction3 where
 
 
diff --git a/html-test/src/DeprecatedModule.hs b/html-test/src/DeprecatedModule.hs
index 369dba4f..179b5899 100644
--- a/html-test/src/DeprecatedModule.hs
+++ b/html-test/src/DeprecatedModule.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | Documentation for "DeprecatedModule".
 module DeprecatedModule {-# DEPRECATED "Use \"Foo\" instead" #-} where
 
diff --git a/html-test/src/DeprecatedModule2.hs b/html-test/src/DeprecatedModule2.hs
index 94185297..ccec1be7 100644
--- a/html-test/src/DeprecatedModule2.hs
+++ b/html-test/src/DeprecatedModule2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedModule2 {-# DEPRECATED "Use Foo instead" #-} where
 
 foo :: Int
diff --git a/html-test/src/DeprecatedNewtype.hs b/html-test/src/DeprecatedNewtype.hs
index 254f1f55..6aeead44 100644
--- a/html-test/src/DeprecatedNewtype.hs
+++ b/html-test/src/DeprecatedNewtype.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedNewtype where
 
 -- | some documentation
diff --git a/html-test/src/DeprecatedReExport.hs b/html-test/src/DeprecatedReExport.hs
index f851e2ff..061c9c27 100644
--- a/html-test/src/DeprecatedReExport.hs
+++ b/html-test/src/DeprecatedReExport.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- |
 -- What is tested here:
 --
diff --git a/html-test/src/DeprecatedRecord.hs b/html-test/src/DeprecatedRecord.hs
index d44499e7..9fe0240d 100644
--- a/html-test/src/DeprecatedRecord.hs
+++ b/html-test/src/DeprecatedRecord.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module DeprecatedRecord where
 
 -- | type Foo
diff --git a/html-test/src/DeprecatedTypeFamily.hs b/html-test/src/DeprecatedTypeFamily.hs
index 70473bb8..3d94cace 100644
--- a/html-test/src/DeprecatedTypeFamily.hs
+++ b/html-test/src/DeprecatedTypeFamily.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies #-}
 module DeprecatedTypeFamily where
 
diff --git a/html-test/src/DeprecatedTypeSynonym.hs b/html-test/src/DeprecatedTypeSynonym.hs
index 34df47da..05fb9bdc 100644
--- a/html-test/src/DeprecatedTypeSynonym.hs
+++ b/html-test/src/DeprecatedTypeSynonym.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 
 module DeprecatedTypeSynonym where
 
diff --git a/html-test/src/DuplicateRecordFields.hs b/html-test/src/DuplicateRecordFields.hs
index 2cf9ff43..59441750 100644
--- a/html-test/src/DuplicateRecordFields.hs
+++ b/html-test/src/DuplicateRecordFields.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 module DuplicateRecordFields (RawReplay(..)) where
 
diff --git a/html-test/src/Examples.hs b/html-test/src/Examples.hs
index c8c450f1..b518ea70 100644
--- a/html-test/src/Examples.hs
+++ b/html-test/src/Examples.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Examples where
 
 -- | Fibonacci number of given 'Integer'.
diff --git a/html-test/src/Extensions.hs b/html-test/src/Extensions.hs
index 61eac219..bbaa6395 100644
--- a/html-test/src/Extensions.hs
+++ b/html-test/src/Extensions.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE Haskell2010, ExplicitForAll, MonomorphismRestriction #-}
 {-# OPTIONS_HADDOCK show-extensions #-}
 module Extensions where
diff --git a/html-test/src/FunArgs.hs b/html-test/src/FunArgs.hs
index e20bcda7..9d7c19dc 100644
--- a/html-test/src/FunArgs.hs
+++ b/html-test/src/FunArgs.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE RankNTypes, DataKinds, TypeFamilies #-}
 module FunArgs where
 
diff --git a/html-test/src/GADTRecords.hs b/html-test/src/GADTRecords.hs
index dcbbb870..015027d2 100644
--- a/html-test/src/GADTRecords.hs
+++ b/html-test/src/GADTRecords.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE GADTs #-}
 module GADTRecords (H1(..)) where
 
diff --git a/html-test/src/GadtConstructorArgs.hs b/html-test/src/GadtConstructorArgs.hs
index 79ffb4d3..6d742bd7 100644
--- a/html-test/src/GadtConstructorArgs.hs
+++ b/html-test/src/GadtConstructorArgs.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE GADTs, PatternSynonyms #-}
 
 module GadtConstructorArgs (Boo(..)) where
diff --git a/html-test/src/Hash.hs b/html-test/src/Hash.hs
index 1eb8af5b..ce40fdd3 100644
--- a/html-test/src/Hash.hs
+++ b/html-test/src/Hash.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {- |
   Implementation of fixed-size hash tables, with a type
   class for constructing hash values for structured types.
diff --git a/html-test/src/Hidden.hs b/html-test/src/Hidden.hs
index 896da648..2b694e86 100644
--- a/html-test/src/Hidden.hs
+++ b/html-test/src/Hidden.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_HADDOCK hide #-}
 
 module Hidden where
diff --git a/html-test/src/HiddenInstances.hs b/html-test/src/HiddenInstances.hs
index 99a6c2fd..a9124098 100644
--- a/html-test/src/HiddenInstances.hs
+++ b/html-test/src/HiddenInstances.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- http://trac.haskell.org/haddock/ticket/37
 module HiddenInstances (VisibleClass, VisibleData) where
 
diff --git a/html-test/src/HiddenInstancesA.hs b/html-test/src/HiddenInstancesA.hs
index f1775208..8879868c 100644
--- a/html-test/src/HiddenInstancesA.hs
+++ b/html-test/src/HiddenInstancesA.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_HADDOCK hide #-}
 module HiddenInstancesA where
 
diff --git a/html-test/src/HiddenInstancesB.hs b/html-test/src/HiddenInstancesB.hs
index eabf0637..0def0ecc 100644
--- a/html-test/src/HiddenInstancesB.hs
+++ b/html-test/src/HiddenInstancesB.hs
@@ -1,2 +1,3 @@
+{-# LANGUAGE Haskell2010 #-}
 module HiddenInstancesB (Foo, Bar) where
 import HiddenInstancesA
diff --git a/html-test/src/Hyperlinks.hs b/html-test/src/Hyperlinks.hs
index 34e64448..f64a5bb1 100644
--- a/html-test/src/Hyperlinks.hs
+++ b/html-test/src/Hyperlinks.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Hyperlinks where
 
 -- |
diff --git a/html-test/src/Identifiers.hs b/html-test/src/Identifiers.hs
index 75f12109..13ee3b82 100644
--- a/html-test/src/Identifiers.hs
+++ b/html-test/src/Identifiers.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeOperators #-}
 module Identifiers where
 
diff --git a/html-test/src/IgnoreExports.hs b/html-test/src/IgnoreExports.hs
index edb7c4c1..2016d3d5 100644
--- a/html-test/src/IgnoreExports.hs
+++ b/html-test/src/IgnoreExports.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_HADDOCK ignore-exports #-}
 module IgnoreExports (Foo, foo) where
 
diff --git a/html-test/src/ImplicitParams.hs b/html-test/src/ImplicitParams.hs
index 3ca9157b..8635b2a4 100644
--- a/html-test/src/ImplicitParams.hs
+++ b/html-test/src/ImplicitParams.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE ImplicitParams, RankNTypes #-}
 module ImplicitParams where
 
diff --git a/html-test/src/Instances.hs b/html-test/src/Instances.hs
index 545c8534..e9537a92 100644
--- a/html-test/src/Instances.hs
+++ b/html-test/src/Instances.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE FlexibleContexts #-}
diff --git a/html-test/src/LinearTypes.hs b/html-test/src/LinearTypes.hs
index cb4eb138..c4f9c84f 100644
--- a/html-test/src/LinearTypes.hs
+++ b/html-test/src/LinearTypes.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE LinearTypes #-}
 module LinearTypes where
 
diff --git a/html-test/src/Math.hs b/html-test/src/Math.hs
index 75bc513e..375dbc2d 100644
--- a/html-test/src/Math.hs
+++ b/html-test/src/Math.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | Math (display) for 'normalDensity'
 --
 -- \[
diff --git a/html-test/src/Minimal.hs b/html-test/src/Minimal.hs
index 9df03cca..ec275aec 100644
--- a/html-test/src/Minimal.hs
+++ b/html-test/src/Minimal.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | This tests the new MINIMAL pragma present in GHC 7.8
 module Minimal
   ( Foo(..)
diff --git a/html-test/src/ModuleWithWarning.hs b/html-test/src/ModuleWithWarning.hs
index e64d9d7e..710589bf 100644
--- a/html-test/src/ModuleWithWarning.hs
+++ b/html-test/src/ModuleWithWarning.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | Documentation for "ModuleWithWarning".
 module ModuleWithWarning {-# WARNING "This is an unstable interface.  Prefer functions from \"Prelude\" instead!" #-} where
 
diff --git a/html-test/src/NamedDoc.hs b/html-test/src/NamedDoc.hs
index 7c04ba72..8ac40921 100644
--- a/html-test/src/NamedDoc.hs
+++ b/html-test/src/NamedDoc.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module NamedDoc where
 
 -- $foo bar
diff --git a/html-test/src/NamespacedIdentifiers.hs b/html-test/src/NamespacedIdentifiers.hs
index 6f59d247..38fb7101 100644
--- a/html-test/src/NamespacedIdentifiers.hs
+++ b/html-test/src/NamespacedIdentifiers.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module NamespacedIdentifiers where
 
 -- | A link to:
diff --git a/html-test/src/Nesting.hs b/html-test/src/Nesting.hs
index f88be87d..fa45e11b 100644
--- a/html-test/src/Nesting.hs
+++ b/html-test/src/Nesting.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Nesting where
 
 {-|
diff --git a/html-test/src/NoLayout.hs b/html-test/src/NoLayout.hs
index 19b38b1d..e07470a3 100644
--- a/html-test/src/NoLayout.hs
+++ b/html-test/src/NoLayout.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 
 -- Haddock comments are parsed as separate declarations so we
 -- need to insert a ';' when using them with explicit layout.
diff --git a/html-test/src/NonGreedy.hs b/html-test/src/NonGreedy.hs
index f51b55f5..b89b0723 100644
--- a/html-test/src/NonGreedy.hs
+++ b/html-test/src/NonGreedy.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module NonGreedy where
 
 -- | <url1> <url2>
diff --git a/html-test/src/Operators.hs b/html-test/src/Operators.hs
index 0b633c3f..c303c8bd 100644
--- a/html-test/src/Operators.hs
+++ b/html-test/src/Operators.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE PatternSynonyms, TypeOperators, TypeFamilies, MultiParamTypeClasses, GADTs #-}
 {-# LANGUAGE FunctionalDependencies #-}
 
diff --git a/html-test/src/OrphanInstances.hs b/html-test/src/OrphanInstances.hs
index e50327ee..e7a24c45 100644
--- a/html-test/src/OrphanInstances.hs
+++ b/html-test/src/OrphanInstances.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module OrphanInstances where
 
 import OrphanInstancesType
diff --git a/html-test/src/OrphanInstancesClass.hs b/html-test/src/OrphanInstancesClass.hs
index 4b51acfc..d5cbf708 100644
--- a/html-test/src/OrphanInstancesClass.hs
+++ b/html-test/src/OrphanInstancesClass.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module OrphanInstancesClass (AClass(..)) where
 
 class AClass a where
diff --git a/html-test/src/OrphanInstancesType.hs b/html-test/src/OrphanInstancesType.hs
index b3c3145e..8a48b93e 100644
--- a/html-test/src/OrphanInstancesType.hs
+++ b/html-test/src/OrphanInstancesType.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module OrphanInstancesType (AType(..)) where
 
 data AType = AType Int
diff --git a/html-test/src/PR643.hs b/html-test/src/PR643.hs
index 565e5b57..a6ad81ee 100644
--- a/html-test/src/PR643.hs
+++ b/html-test/src/PR643.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module PR643 (test) where
 
 import PR643_1
diff --git a/html-test/src/PR643_1.hs b/html-test/src/PR643_1.hs
index ecd0db94..67dabee3 100644
--- a/html-test/src/PR643_1.hs
+++ b/html-test/src/PR643_1.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module PR643_1 where
 
 infixr 5 `test`
diff --git a/html-test/src/PatternSyns.hs b/html-test/src/PatternSyns.hs
index bf0f7848..e0da6d6b 100644
--- a/html-test/src/PatternSyns.hs
+++ b/html-test/src/PatternSyns.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE ExistentialQuantification, PatternSynonyms, PolyKinds, TypeOperators #-}
 
 -- | Testing some pattern synonyms
diff --git a/html-test/src/PromotedTypes.hs b/html-test/src/PromotedTypes.hs
index ae3ad375..624f9d5a 100644
--- a/html-test/src/PromotedTypes.hs
+++ b/html-test/src/PromotedTypes.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE KindSignatures #-}
diff --git a/html-test/src/Properties.hs b/html-test/src/Properties.hs
index 05930ece..8b1409f3 100644
--- a/html-test/src/Properties.hs
+++ b/html-test/src/Properties.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Properties where
 
 -- | Fibonacci number of given 'Integer'.
diff --git a/html-test/src/PruneWithWarning.hs b/html-test/src/PruneWithWarning.hs
index bfa55ea2..c2f746f0 100644
--- a/html-test/src/PruneWithWarning.hs
+++ b/html-test/src/PruneWithWarning.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_HADDOCK prune #-}
 -- |
 -- What is tested here:
diff --git a/html-test/src/QuantifiedConstraints.hs b/html-test/src/QuantifiedConstraints.hs
index 82dd81e5..4f96b322 100644
--- a/html-test/src/QuantifiedConstraints.hs
+++ b/html-test/src/QuantifiedConstraints.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE QuantifiedConstraints #-}
 module QuantifiedConstraints where
 
diff --git a/html-test/src/QuasiExpr.hs b/html-test/src/QuasiExpr.hs
index 970759ba..d81fcf8b 100644
--- a/html-test/src/QuasiExpr.hs
+++ b/html-test/src/QuasiExpr.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 -- Used by QuasiQuote. Example taken from the GHC documentation.
diff --git a/html-test/src/QuasiQuote.hs b/html-test/src/QuasiQuote.hs
index 06762cf9..fe900eb8 100644
--- a/html-test/src/QuasiQuote.hs
+++ b/html-test/src/QuasiQuote.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell, QuasiQuotes #-}
 
 -- example taken from the GHC documentation
diff --git a/html-test/src/SectionLabels.hs b/html-test/src/SectionLabels.hs
index 560bafa4..0017bd72 100644
--- a/html-test/src/SectionLabels.hs
+++ b/html-test/src/SectionLabels.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module SectionLabels
   (
     -- * Section heading#custom#
diff --git a/html-test/src/SpuriousSuperclassConstraints.hs b/html-test/src/SpuriousSuperclassConstraints.hs
index 3e230945..cb204941 100644
--- a/html-test/src/SpuriousSuperclassConstraints.hs
+++ b/html-test/src/SpuriousSuperclassConstraints.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE EmptyDataDecls, KindSignatures #-}
 -- |
 -- What is tested here:
diff --git a/html-test/src/TH.hs b/html-test/src/TH.hs
index f8178bcb..2692ae42 100644
--- a/html-test/src/TH.hs
+++ b/html-test/src/TH.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 module TH where
diff --git a/html-test/src/TH2.hs b/html-test/src/TH2.hs
index ea85e547..f878b1e0 100644
--- a/html-test/src/TH2.hs
+++ b/html-test/src/TH2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 module TH2 where
diff --git a/html-test/src/Table.hs b/html-test/src/Table.hs
index 2cf0c662..4ffbc9b3 100644
--- a/html-test/src/Table.hs
+++ b/html-test/src/Table.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | This tests the table markup
 module Table
   ( tableWithHeader
diff --git a/html-test/src/Test.hs b/html-test/src/Test.hs
index e94cc414..a809f337 100644
--- a/html-test/src/Test.hs
+++ b/html-test/src/Test.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Test
diff --git a/html-test/src/Threaded.hs b/html-test/src/Threaded.hs
index 7f3073ad..afe38c27 100644
--- a/html-test/src/Threaded.hs
+++ b/html-test/src/Threaded.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 -- | Ensures haddock built with @-threaded@.
diff --git a/html-test/src/Threaded_TH.hs b/html-test/src/Threaded_TH.hs
index 53e5a399..8179f090 100644
--- a/html-test/src/Threaded_TH.hs
+++ b/html-test/src/Threaded_TH.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 -- | Imported by 'Threaded', since a TH splice can't be used in the
 -- module where it is defined.
 module Threaded_TH where
diff --git a/html-test/src/Ticket112.hs b/html-test/src/Ticket112.hs
index c9cd5117..db7f3ed0 100644
--- a/html-test/src/Ticket112.hs
+++ b/html-test/src/Ticket112.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE MagicHash #-}
 
 module Ticket112 where
diff --git a/html-test/src/Ticket61.hs b/html-test/src/Ticket61.hs
index 26ca287f..c80e1c75 100644
--- a/html-test/src/Ticket61.hs
+++ b/html-test/src/Ticket61.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Ticket61 (module Ticket61_Hidden) where
 
 import Ticket61_Hidden
diff --git a/html-test/src/Ticket61_Hidden.hs b/html-test/src/Ticket61_Hidden.hs
index 583c10cd..f3654cfc 100644
--- a/html-test/src/Ticket61_Hidden.hs
+++ b/html-test/src/Ticket61_Hidden.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_HADDOCK hide #-}
 
 module Ticket61_Hidden where
diff --git a/html-test/src/Ticket75.hs b/html-test/src/Ticket75.hs
index 5fc704d6..743ffd60 100644
--- a/html-test/src/Ticket75.hs
+++ b/html-test/src/Ticket75.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeOperators #-}
 module Ticket75 where
 
diff --git a/html-test/src/TitledPicture.hs b/html-test/src/TitledPicture.hs
index 7029d98a..69d44397 100644
--- a/html-test/src/TitledPicture.hs
+++ b/html-test/src/TitledPicture.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module TitledPicture where
 
 -- | Picture for 'foo' without a title <<bar>>
diff --git a/html-test/src/TypeFamilies.hs b/html-test/src/TypeFamilies.hs
index a79d503e..d759af4f 100644
--- a/html-test/src/TypeFamilies.hs
+++ b/html-test/src/TypeFamilies.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies, UndecidableInstances, PolyKinds, TypeOperators, DataKinds, MultiParamTypeClasses, GADTs #-}
 
 -- | Doc for: module TypeFamilies
diff --git a/html-test/src/TypeFamilies2.hs b/html-test/src/TypeFamilies2.hs
index b66acbfa..c1211319 100644
--- a/html-test/src/TypeFamilies2.hs
+++ b/html-test/src/TypeFamilies2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies #-}
 -- This tests what happens if we have unexported types
 -- in type instances. The expected behaviour is
diff --git a/html-test/src/TypeFamilies3.hs b/html-test/src/TypeFamilies3.hs
index bde05fb8..80279e36 100644
--- a/html-test/src/TypeFamilies3.hs
+++ b/html-test/src/TypeFamilies3.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeFamilies #-}
 
 module TypeFamilies3 where
diff --git a/html-test/src/TypeOperators.hs b/html-test/src/TypeOperators.hs
index e69e89cb..e82d065d 100644
--- a/html-test/src/TypeOperators.hs
+++ b/html-test/src/TypeOperators.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE TypeOperators, GADTs, MultiParamTypeClasses, FlexibleContexts #-}
 module TypeOperators where
 
diff --git a/html-test/src/UnboxedStuff.hs b/html-test/src/UnboxedStuff.hs
index bd1b1302..dfeb7429 100644
--- a/html-test/src/UnboxedStuff.hs
+++ b/html-test/src/UnboxedStuff.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE UnboxedSums, UnboxedTuples #-}
 module UnboxedStuff where
 
diff --git a/html-test/src/Unicode.hs b/html-test/src/Unicode.hs
index d5bbf445..ecd195cf 100644
--- a/html-test/src/Unicode.hs
+++ b/html-test/src/Unicode.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Unicode where
 
 -- | γλώσσα
diff --git a/html-test/src/Unicode2.hs b/html-test/src/Unicode2.hs
index ca6b18ba..19925a4f 100644
--- a/html-test/src/Unicode2.hs
+++ b/html-test/src/Unicode2.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Unicode2 where
 
 -- | All of the following work with a unicode character ü:
diff --git a/html-test/src/Visible.hs b/html-test/src/Visible.hs
index cad71931..9440aeef 100644
--- a/html-test/src/Visible.hs
+++ b/html-test/src/Visible.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 module Visible where
 visible :: Int -> Int
 visible a = a