Remove CPP from default-extensions; add pragmas to modules as needed.

man/make-pandoc-man-pages.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 -- Create pandoc.1 man and pandoc_markdown.5 man pages from README
 import Text.Pandoc
 import qualified Text.Pandoc.UTF8 as UTF8

pandoc.cabal

@@ -277,7 +277,6 @@ Library
   Ghc-Options:   -rtsopts -Wall -fno-warn-unused-do-bind
   Ghc-Prof-Options: -auto-all -caf-all -rtsopts
   Default-Language: Haskell98
-  Default-Extensions: CPP
   Other-Extensions:   PatternGuards, OverloadedStrings,
                       ScopedTypeVariables, GeneralizedNewtypeDeriving,
                       RelaxedPolyRec, DeriveDataTypeable, TypeSynonymInstances,
@@ -357,7 +356,6 @@ Executable pandoc
   if os(windows)
     Cpp-options:      -D_WINDOWS
   Default-Language: Haskell98
-  Default-Extensions: CPP
   Other-Extensions: PatternGuards, OverloadedStrings,
                     ScopedTypeVariables, GeneralizedNewtypeDeriving,
                     RelaxedPolyRec, DeriveDataTypeable, TypeSynonymInstances,
@@ -377,7 +375,6 @@ Executable make-pandoc-man-pages
                  old-time >= 1.0 && < 1.2,
                  time >= 1.2 && < 1.5
   Default-Language: Haskell98
-  Default-Extensions: CPP
 
 Test-Suite test-pandoc
   Type:           exitcode-stdio-1.0
@@ -415,7 +412,6 @@ Test-Suite test-pandoc
                   Tests.Writers.LaTeX
   Ghc-Options:  -rtsopts -Wall -fno-warn-unused-do-bind
   Default-Language: Haskell98
-  Default-Extensions: CPP
 
 benchmark benchmark-pandoc
   Type:            exitcode-stdio-1.0

src/Text/Pandoc/Pretty.hs

@@ -1,4 +1,4 @@
-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving, CPP #-}
 {-
 Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
 

src/Text/Pandoc/UTF8.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-
 Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
 

src/Text/Pandoc/Writers/EPUB.hs

@@ -1,4 +1,4 @@
-{-# LANGUAGE PatternGuards #-}
+{-# LANGUAGE PatternGuards, CPP #-}
 {-
 Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
 
@@ -62,11 +62,7 @@ import Text.Pandoc.MIME (getMimeType)
 import Prelude hiding (catch)
 #endif
 import Control.Exception (catch, SomeException)
-#if MIN_VERSION_blaze_html(0,5,0)
 import Text.Blaze.Html.Renderer.Utf8 (renderHtml)
-#else
-import Text.Blaze.Renderer.Utf8 (renderHtml)
-#endif
 
 -- A Chapter includes a list of blocks and maybe a section
 -- number offset.  Note, some chapters are unnumbered. The section