Use NoImplicitPrelude and explicitly import Prelude.

This seems to be necessary if we are to use our custom Prelude
with ghci.

Closes #4464.

49 files changed, 96 insertions, 4 deletions

diff --git a/src/Text/Pandoc/Readers/CommonMark.hs b/src/Text/Pandoc/Readers/CommonMark.hs
index 6fbc09c17..79a4abbc2 100644
--- a/src/Text/Pandoc/Readers/CommonMark.hs
+++ b/src/Text/Pandoc/Readers/CommonMark.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2015-2018 John MacFarlane <jgm@berkeley.edu>
 
@@ -32,6 +33,7 @@ CommonMark is a strongly specified variant of Markdown: http://commonmark.org.
 module Text.Pandoc.Readers.CommonMark (readCommonMark)
 where
 
+import Prelude
 import CMarkGFM
 import Control.Monad.State
 import Data.Char (isAlphaNum, isLetter, isSpace, toLower)
diff --git a/src/Text/Pandoc/Readers/Creole.hs b/src/Text/Pandoc/Readers/Creole.hs
index 5ca625229..4fd38c0fd 100644
--- a/src/Text/Pandoc/Readers/Creole.hs
+++ b/src/Text/Pandoc/Readers/Creole.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
   Copyright (C) 2017 Sascha Wilde <wilde@sha-bang.de>
 
@@ -35,6 +36,7 @@ Conversion of creole text to 'Pandoc' document.
 module Text.Pandoc.Readers.Creole ( readCreole
                                   ) where
 
+import Prelude
 import Control.Monad.Except (guard, liftM2, throwError)
 import qualified Data.Foldable as F
 import Data.Maybe (fromMaybe)
diff --git a/src/Text/Pandoc/Readers/DocBook.hs b/src/Text/Pandoc/Readers/DocBook.hs
index 728f77a05..7789e3867 100644
--- a/src/Text/Pandoc/Readers/DocBook.hs
+++ b/src/Text/Pandoc/Readers/DocBook.hs
@@ -1,5 +1,7 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE ExplicitForAll #-}
 module Text.Pandoc.Readers.DocBook ( readDocBook ) where
+import Prelude
 import Control.Monad.State.Strict
 import Data.Char (isSpace, toUpper)
 import Data.Default
diff --git a/src/Text/Pandoc/Readers/Docx.hs b/src/Text/Pandoc/Readers/Docx.hs
index 9b41e468a..00603603a 100644
--- a/src/Text/Pandoc/Readers/Docx.hs
+++ b/src/Text/Pandoc/Readers/Docx.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE CPP               #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PatternGuards     #-}
@@ -74,6 +75,7 @@ module Text.Pandoc.Readers.Docx
        ( readDocx
        ) where
 
+import Prelude
 import Codec.Archive.Zip
 import Control.Monad.Reader
 import Control.Monad.State.Strict
diff --git a/src/Text/Pandoc/Readers/Docx/Combine.hs b/src/Text/Pandoc/Readers/Docx/Combine.hs
index 003265e6e..dfd2b5666 100644
--- a/src/Text/Pandoc/Readers/Docx/Combine.hs
+++ b/src/Text/Pandoc/Readers/Docx/Combine.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances    #-}
 {-# LANGUAGE PatternGuards        #-}
 {-# LANGUAGE TypeSynonymInstances #-}
@@ -7,6 +8,7 @@ module Text.Pandoc.Readers.Docx.Combine ( smushInlines
                                         )
        where
 
+import Prelude
 import Data.List
 import Data.Sequence (ViewL (..), ViewR (..), viewl, viewr, (><), (|>))
 import qualified Data.Sequence as Seq (null)
diff --git a/src/Text/Pandoc/Readers/Docx/Fields.hs b/src/Text/Pandoc/Readers/Docx/Fields.hs
index 6eeb55d2f..c3f54560b 100644
--- a/src/Text/Pandoc/Readers/Docx/Fields.hs
+++ b/src/Text/Pandoc/Readers/Docx/Fields.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Jesse Rosenthal <jrosenthal@jhu.edu>
 
@@ -32,6 +33,7 @@ module Text.Pandoc.Readers.Docx.Fields ( FieldInfo(..)
                                        , parseFieldInfo
                                        ) where
 
+import Prelude
 import Text.Parsec
 import Text.Parsec.String (Parser)
 
diff --git a/src/Text/Pandoc/Readers/Docx/Lists.hs b/src/Text/Pandoc/Readers/Docx/Lists.hs
index c0f05094a..49ea71601 100644
--- a/src/Text/Pandoc/Readers/Docx/Lists.hs
+++ b/src/Text/Pandoc/Readers/Docx/Lists.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Jesse Rosenthal <jrosenthal@jhu.edu>
 
@@ -33,6 +34,7 @@ module Text.Pandoc.Readers.Docx.Lists ( blocksToBullets
                                       , listParagraphDivs
                                       ) where
 
+import Prelude
 import Data.List
 import Data.Maybe
 import Text.Pandoc.Generic (bottomUp)
diff --git a/src/Text/Pandoc/Readers/Docx/Parse.hs b/src/Text/Pandoc/Readers/Docx/Parse.hs
index d6226dfab..4c4c06073 100644
--- a/src/Text/Pandoc/Readers/Docx/Parse.hs
+++ b/src/Text/Pandoc/Readers/Docx/Parse.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE PatternGuards     #-}
 {-# LANGUAGE ViewPatterns      #-}
@@ -58,6 +59,7 @@ module Text.Pandoc.Readers.Docx.Parse ( Docx(..)
                                       , archiveToDocx
                                       , archiveToDocxWithWarnings
                                       ) where
+import Prelude
 import Codec.Archive.Zip
 import Control.Applicative ((<|>))
 import Control.Monad.Except
diff --git a/src/Text/Pandoc/Readers/Docx/StyleMap.hs b/src/Text/Pandoc/Readers/Docx/StyleMap.hs
index b32a73770..6ccda3ccc 100644
--- a/src/Text/Pandoc/Readers/Docx/StyleMap.hs
+++ b/src/Text/Pandoc/Readers/Docx/StyleMap.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 module Text.Pandoc.Readers.Docx.StyleMap (  StyleMaps(..)
                                           , alterMap
                                           , getMap
@@ -7,6 +8,7 @@ module Text.Pandoc.Readers.Docx.StyleMap (  StyleMaps(..)
                                           , hasStyleName
                                           ) where
 
+import Prelude
 import Control.Monad.State.Strict
 import Data.Char (toLower)
 import qualified Data.Map as M
diff --git a/src/Text/Pandoc/Readers/Docx/Util.hs b/src/Text/Pandoc/Readers/Docx/Util.hs
index d9d65bc07..088950d26 100644
--- a/src/Text/Pandoc/Readers/Docx/Util.hs
+++ b/src/Text/Pandoc/Readers/Docx/Util.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 module Text.Pandoc.Readers.Docx.Util (
                                         NameSpaces
                                       , elemName
@@ -8,6 +9,7 @@ module Text.Pandoc.Readers.Docx.Util (
                                       , findAttrByName
                                       ) where
 
+import Prelude
 import Data.Maybe (mapMaybe)
 import Text.XML.Light
 
diff --git a/src/Text/Pandoc/Readers/EPUB.hs b/src/Text/Pandoc/Readers/EPUB.hs
index fb17c1c8c..e77463fec 100644
--- a/src/Text/Pandoc/Readers/EPUB.hs
+++ b/src/Text/Pandoc/Readers/EPUB.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts #-}
 
 {-# LANGUAGE TupleSections    #-}
@@ -7,6 +8,7 @@ module Text.Pandoc.Readers.EPUB
   (readEPUB)
   where
 
+import Prelude
 import Codec.Archive.Zip (Archive (..), Entry, findEntryByPath, fromEntry,
                           toArchiveOrFail)
 import Control.DeepSeq (NFData, deepseq)
diff --git a/src/Text/Pandoc/Readers/HTML.hs b/src/Text/Pandoc/Readers/HTML.hs
index 13c87a9c7..b221b6fb2 100644
--- a/src/Text/Pandoc/Readers/HTML.hs
+++ b/src/Text/Pandoc/Readers/HTML.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE FlexibleInstances     #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
@@ -42,6 +43,7 @@ module Text.Pandoc.Readers.HTML ( readHtml
                                 , isCommentTag
                                 ) where
 
+import Prelude
 import Control.Applicative ((<|>))
 import Control.Arrow (first)
 import Control.Monad (guard, mplus, msum, mzero, unless, void)
diff --git a/src/Text/Pandoc/Readers/Haddock.hs b/src/Text/Pandoc/Readers/Haddock.hs
index 65fcc5dba..967037e4e 100644
--- a/src/Text/Pandoc/Readers/Haddock.hs
+++ b/src/Text/Pandoc/Readers/Haddock.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE CPP #-}
 {- |
    Module      : Text.Pandoc.Readers.Haddock
@@ -14,6 +15,7 @@ module Text.Pandoc.Readers.Haddock
     ( readHaddock
     ) where
 
+import Prelude
 import Control.Monad.Except (throwError)
 import Data.List (intersperse, stripPrefix)
 import Data.Maybe (fromMaybe)
diff --git a/src/Text/Pandoc/Readers/JATS.hs b/src/Text/Pandoc/Readers/JATS.hs
index 8158a4511..b0a43ed06 100644
--- a/src/Text/Pandoc/Readers/JATS.hs
+++ b/src/Text/Pandoc/Readers/JATS.hs
@@ -1,5 +1,7 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE ExplicitForAll, TupleSections #-}
 module Text.Pandoc.Readers.JATS ( readJATS ) where
+import Prelude
 import Control.Monad.State.Strict
 import Data.Char (isDigit, isSpace, toUpper)
 import Data.Default
diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index 7252a2da7..23b68361e 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances     #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE OverloadedStrings     #-}
@@ -42,6 +43,7 @@ module Text.Pandoc.Readers.LaTeX ( readLaTeX,
                                    untokenize
                                  ) where
 
+import Prelude
 import Control.Applicative (many, optional, (<|>))
 import Control.Monad
 import Control.Monad.Except (throwError)
diff --git a/src/Text/Pandoc/Readers/LaTeX/Types.hs b/src/Text/Pandoc/Readers/LaTeX/Types.hs
index c9cbaa9b9..fa832114b 100644
--- a/src/Text/Pandoc/Readers/LaTeX/Types.hs
+++ b/src/Text/Pandoc/Readers/LaTeX/Types.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2017-2018 John MacFarlane <jgm@berkeley.edu>
 
@@ -34,6 +35,7 @@ module Text.Pandoc.Readers.LaTeX.Types ( Tok(..)
                                        , SourcePos
                                        )
 where
+import Prelude
 import Data.Text (Text)
 import Text.Parsec.Pos (SourcePos)
 
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index f6efef657..71e6f8249 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE RelaxedPolyRec      #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 
@@ -32,6 +33,7 @@ Conversion of markdown-formatted plain text to 'Pandoc' document.
 -}
 module Text.Pandoc.Readers.Markdown ( readMarkdown ) where
 
+import Prelude
 import Control.Monad
 import Control.Monad.Except (throwError)
 import Data.Char (isAlphaNum, isPunctuation, isSpace, toLower)
diff --git a/src/Text/Pandoc/Readers/MediaWiki.hs b/src/Text/Pandoc/Readers/MediaWiki.hs
index d791a0a28..a07f66e7a 100644
--- a/src/Text/Pandoc/Readers/MediaWiki.hs
+++ b/src/Text/Pandoc/Readers/MediaWiki.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances    #-}
 {-# LANGUAGE RelaxedPolyRec       #-}
 {-# LANGUAGE TypeSynonymInstances #-}
@@ -38,6 +39,7 @@ _ parse templates?
 -}
 module Text.Pandoc.Readers.MediaWiki ( readMediaWiki ) where
 
+import Prelude
 import Control.Monad
 import Control.Monad.Except (throwError)
 import Data.Char (isDigit, isSpace)
diff --git a/src/Text/Pandoc/Readers/Muse.hs b/src/Text/Pandoc/Readers/Muse.hs
index bee4ae4d6..c9157b7d3 100644
--- a/src/Text/Pandoc/Readers/Muse.hs
+++ b/src/Text/Pandoc/Readers/Muse.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-
   Copyright (C) 2017-2018 Alexander Krotov <ilabdsf@gmail.com>
@@ -39,6 +40,7 @@ TODO:
 -}
 module Text.Pandoc.Readers.Muse (readMuse) where
 
+import Prelude
 import Control.Monad
 import Control.Monad.Except (throwError)
 import Data.Char (isLetter)
diff --git a/src/Text/Pandoc/Readers/Native.hs b/src/Text/Pandoc/Readers/Native.hs
index 88f6bfe8f..ef200aa19 100644
--- a/src/Text/Pandoc/Readers/Native.hs
+++ b/src/Text/Pandoc/Readers/Native.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2011-2018 John MacFarlane <jgm@berkeley.edu>
 
@@ -30,6 +31,7 @@ Conversion of a string representation of a pandoc type (@Pandoc@,
 -}
 module Text.Pandoc.Readers.Native ( readNative ) where
 
+import Prelude
 import Text.Pandoc.Definition
 import Text.Pandoc.Options (ReaderOptions)
 import Text.Pandoc.Shared (safeRead)
diff --git a/src/Text/Pandoc/Readers/OPML.hs b/src/Text/Pandoc/Readers/OPML.hs
index 82266748f..57bdc96da 100644
--- a/src/Text/Pandoc/Readers/OPML.hs
+++ b/src/Text/Pandoc/Readers/OPML.hs
@@ -1,5 +1,7 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts #-}
 module Text.Pandoc.Readers.OPML ( readOPML ) where
+import Prelude
 import Control.Monad.State.Strict
 import Data.Char (toUpper)
 import Data.Default
diff --git a/src/Text/Pandoc/Readers/Odt.hs b/src/Text/Pandoc/Readers/Odt.hs
index 875c18a85..30016e444 100644
--- a/src/Text/Pandoc/Readers/Odt.hs
+++ b/src/Text/Pandoc/Readers/Odt.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE PatternGuards #-}
 
 {-
@@ -32,6 +33,7 @@ Entry point to the odt reader.
 
 module Text.Pandoc.Readers.Odt ( readOdt ) where
 
+import Prelude
 import Codec.Archive.Zip
 import qualified Text.XML.Light as XML
 
diff --git a/src/Text/Pandoc/Readers/Odt/Arrows/State.hs b/src/Text/Pandoc/Readers/Odt/Arrows/State.hs
index 202118669..971442613 100644
--- a/src/Text/Pandoc/Readers/Odt/Arrows/State.hs
+++ b/src/Text/Pandoc/Readers/Odt/Arrows/State.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE TupleSections     #-}
 {-
@@ -37,14 +38,13 @@ faster and easier to implement this way.
 
 module Text.Pandoc.Readers.Odt.Arrows.State where
 
+import Prelude
 import Prelude hiding (foldl, foldr)
 
 import Control.Arrow
 import qualified Control.Category as Cat
 import Control.Monad
 
-import Data.Foldable
-
 import Text.Pandoc.Readers.Odt.Arrows.Utils
 import Text.Pandoc.Readers.Odt.Generic.Fallible
 
diff --git a/src/Text/Pandoc/Readers/Odt/Arrows/Utils.hs b/src/Text/Pandoc/Readers/Odt/Arrows/Utils.hs
index e9ce53704..d3db3a9e2 100644
--- a/src/Text/Pandoc/Readers/Odt/Arrows/Utils.hs
+++ b/src/Text/Pandoc/Readers/Odt/Arrows/Utils.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
 
@@ -39,6 +40,7 @@ with an equivalent return value.
 -- We export everything
 module Text.Pandoc.Readers.Odt.Arrows.Utils where
 
+import Prelude
 import Control.Arrow
 import Control.Monad (join)
 
diff --git a/src/Text/Pandoc/Readers/Odt/Base.hs b/src/Text/Pandoc/Readers/Odt/Base.hs
index 51c2da788..5e731aefe 100644
--- a/src/Text/Pandoc/Readers/Odt/Base.hs
+++ b/src/Text/Pandoc/Readers/Odt/Base.hs
@@ -1,5 +1,3 @@
-
-
 {-
 Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
 
diff --git a/src/Text/Pandoc/Readers/Odt/ContentReader.hs b/src/Text/Pandoc/Readers/Odt/ContentReader.hs
index ad0612ec8..78881914d 100644
--- a/src/Text/Pandoc/Readers/Odt/ContentReader.hs
+++ b/src/Text/Pandoc/Readers/Odt/ContentReader.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE Arrows          #-}
 {-# LANGUAGE PatternGuards   #-}
 {-# LANGUAGE RecordWildCards #-}
@@ -39,6 +40,7 @@ module Text.Pandoc.Readers.Odt.ContentReader
 , read_body
 ) where
 
+import Prelude
 import Control.Applicative hiding (liftA, liftA2, liftA3)
 import Control.Arrow
 
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/Fallible.hs b/src/Text/Pandoc/Readers/Odt/Generic/Fallible.hs
index 03cb82f61..1fb5b5477 100644
--- a/src/Text/Pandoc/Readers/Odt/Generic/Fallible.hs
+++ b/src/Text/Pandoc/Readers/Odt/Generic/Fallible.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 
 
 {-
@@ -38,6 +39,7 @@ compatible instances of "ArrowChoice".
 
 -- We export everything
 module Text.Pandoc.Readers.Odt.Generic.Fallible where
+import Prelude
 
 -- | Default for now. Will probably become a class at some point.
 type Failure = ()
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs b/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs
index 82ae3e20e..6d96897aa 100644
--- a/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs
+++ b/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
 
@@ -31,6 +32,7 @@ typesafe Haskell namespace identifiers and unsafe "real world" namespaces.
 
 module Text.Pandoc.Readers.Odt.Generic.Namespaces where
 
+import Prelude
 import qualified Data.Map as M
 
 --
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/SetMap.hs b/src/Text/Pandoc/Readers/Odt/Generic/SetMap.hs
index afd7d616c..b0543b6d1 100644
--- a/src/Text/Pandoc/Readers/Odt/Generic/SetMap.hs
+++ b/src/Text/Pandoc/Readers/Odt/Generic/SetMap.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
 
@@ -30,6 +31,7 @@ A map of values to sets of values.
 
 module Text.Pandoc.Readers.Odt.Generic.SetMap where
 
+import Prelude
 import qualified Data.Map as M
 import qualified Data.Set as S
 
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/Utils.hs b/src/Text/Pandoc/Readers/Odt/Generic/Utils.hs
index 556517259..616d9290b 100644
--- a/src/Text/Pandoc/Readers/Odt/Generic/Utils.hs
+++ b/src/Text/Pandoc/Readers/Odt/Generic/Utils.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 
 
 {-# LANGUAGE TypeOperators #-}
@@ -51,6 +52,7 @@ module Text.Pandoc.Readers.Odt.Generic.Utils
 , composition
 ) where
 
+import Prelude
 import Control.Category (Category, (<<<), (>>>))
 import qualified Control.Category as Cat (id)
 import Control.Monad (msum)
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/XMLConverter.hs b/src/Text/Pandoc/Readers/Odt/Generic/XMLConverter.hs
index 428048427..81392e16b 100644
--- a/src/Text/Pandoc/Readers/Odt/Generic/XMLConverter.hs
+++ b/src/Text/Pandoc/Readers/Odt/Generic/XMLConverter.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE Arrows          #-}
 {-# LANGUAGE TupleSections   #-}
 {-# LANGUAGE GADTs           #-}
@@ -67,6 +68,7 @@ module Text.Pandoc.Readers.Odt.Generic.XMLConverter
 , matchContent
 ) where
 
+import Prelude
 import           Control.Applicative  hiding ( liftA, liftA2 )
 import           Control.Monad               ( MonadPlus )
 import           Control.Arrow
diff --git a/src/Text/Pandoc/Readers/Odt/Namespaces.hs b/src/Text/Pandoc/Readers/Odt/Namespaces.hs
index 92e12931d..28865182f 100644
--- a/src/Text/Pandoc/Readers/Odt/Namespaces.hs
+++ b/src/Text/Pandoc/Readers/Odt/Namespaces.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
 
@@ -31,6 +32,7 @@ Namespaces used in odt files.
 module Text.Pandoc.Readers.Odt.Namespaces ( Namespace (..)
                                           ) where
 
+import Prelude
 import Data.List (isPrefixOf)
 import qualified Data.Map as M (empty, insert)
 import Data.Maybe (fromMaybe, listToMaybe)
diff --git a/src/Text/Pandoc/Readers/Odt/StyleReader.hs b/src/Text/Pandoc/Readers/Odt/StyleReader.hs
index 477f6b8b7..e0444559b 100644
--- a/src/Text/Pandoc/Readers/Odt/StyleReader.hs
+++ b/src/Text/Pandoc/Readers/Odt/StyleReader.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE CPP             #-}
 {-# LANGUAGE Arrows          #-}
 {-# LANGUAGE RecordWildCards #-}
@@ -57,6 +58,7 @@ module Text.Pandoc.Readers.Odt.StyleReader
 , readStylesAt
 ) where
 
+import Prelude
 import Control.Applicative hiding (liftA, liftA2, liftA3)
 import Control.Arrow
 
diff --git a/src/Text/Pandoc/Readers/Org.hs b/src/Text/Pandoc/Readers/Org.hs
index 292830bd2..75b99e079 100644
--- a/src/Text/Pandoc/Readers/Org.hs
+++ b/src/Text/Pandoc/Readers/Org.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -27,6 +28,7 @@ Conversion of org-mode formatted plain text to 'Pandoc' document.
 -}
 module Text.Pandoc.Readers.Org ( readOrg ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.Blocks (blockList, meta)
 import Text.Pandoc.Readers.Org.ParserState (optionsToParserState)
 import Text.Pandoc.Readers.Org.Parsing (OrgParser, readWithM)
diff --git a/src/Text/Pandoc/Readers/Org/BlockStarts.hs b/src/Text/Pandoc/Readers/Org/BlockStarts.hs
index 424102cb0..5dbce01bd 100644
--- a/src/Text/Pandoc/Readers/Org/BlockStarts.hs
+++ b/src/Text/Pandoc/Readers/Org/BlockStarts.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -40,6 +41,7 @@ module Text.Pandoc.Readers.Org.BlockStarts
   , endOfBlock
   ) where
 
+import Prelude
 import Control.Monad (void)
 import Text.Pandoc.Readers.Org.Parsing
 
diff --git a/src/Text/Pandoc/Readers/Org/Blocks.hs b/src/Text/Pandoc/Readers/Org/Blocks.hs
index de5cb007a..888cd9307 100644
--- a/src/Text/Pandoc/Readers/Org/Blocks.hs
+++ b/src/Text/Pandoc/Readers/Org/Blocks.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -31,6 +32,7 @@ module Text.Pandoc.Readers.Org.Blocks
   , meta
   ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.BlockStarts
 import Text.Pandoc.Readers.Org.DocumentTree (documentTree, headlineToBlocks)
 import Text.Pandoc.Readers.Org.Inlines
diff --git a/src/Text/Pandoc/Readers/Org/DocumentTree.hs b/src/Text/Pandoc/Readers/Org/DocumentTree.hs
index ae244e3b0..c9465581a 100644
--- a/src/Text/Pandoc/Readers/Org/DocumentTree.hs
+++ b/src/Text/Pandoc/Readers/Org/DocumentTree.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -32,6 +33,7 @@ module Text.Pandoc.Readers.Org.DocumentTree
   , headlineToBlocks
   ) where
 
+import Prelude
 import Control.Arrow ((***))
 import Control.Monad (guard, void)
 import Data.Char (toLower, toUpper)
diff --git a/src/Text/Pandoc/Readers/Org/ExportSettings.hs b/src/Text/Pandoc/Readers/Org/ExportSettings.hs
index 6a70c50b9..d02eb37c5 100644
--- a/src/Text/Pandoc/Readers/Org/ExportSettings.hs
+++ b/src/Text/Pandoc/Readers/Org/ExportSettings.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2016-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -29,6 +30,7 @@ module Text.Pandoc.Readers.Org.ExportSettings
   ( exportSettings
   ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.ParserState
 import Text.Pandoc.Readers.Org.Parsing
 
diff --git a/src/Text/Pandoc/Readers/Org/Inlines.hs b/src/Text/Pandoc/Readers/Org/Inlines.hs
index 6173669a5..91d3b7dd3 100644
--- a/src/Text/Pandoc/Readers/Org/Inlines.hs
+++ b/src/Text/Pandoc/Readers/Org/Inlines.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
@@ -33,6 +34,7 @@ module Text.Pandoc.Readers.Org.Inlines
   , linkTarget
   ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.BlockStarts (endOfBlock, noteMarker)
 import Text.Pandoc.Readers.Org.ParserState
 import Text.Pandoc.Readers.Org.Parsing
diff --git a/src/Text/Pandoc/Readers/Org/Meta.hs b/src/Text/Pandoc/Readers/Org/Meta.hs
index 6ad403fd8..938e393bb 100644
--- a/src/Text/Pandoc/Readers/Org/Meta.hs
+++ b/src/Text/Pandoc/Readers/Org/Meta.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE TupleSections    #-}
 {-
@@ -33,6 +34,7 @@ module Text.Pandoc.Readers.Org.Meta
   , metaLine
   ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.BlockStarts
 import Text.Pandoc.Readers.Org.ExportSettings (exportSettings)
 import Text.Pandoc.Readers.Org.Inlines
diff --git a/src/Text/Pandoc/Readers/Org/ParserState.hs b/src/Text/Pandoc/Readers/Org/ParserState.hs
index 6316766fa..4cb5bb626 100644
--- a/src/Text/Pandoc/Readers/Org/ParserState.hs
+++ b/src/Text/Pandoc/Readers/Org/ParserState.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleInstances     #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-
@@ -54,6 +55,7 @@ module Text.Pandoc.Readers.Org.ParserState
   , optionsToParserState
   ) where
 
+import Prelude
 import Control.Monad.Reader (ReaderT, asks, local)
 
 import Data.Default (Default (..))
diff --git a/src/Text/Pandoc/Readers/Org/Parsing.hs b/src/Text/Pandoc/Readers/Org/Parsing.hs
index 36420478b..e014de65e 100644
--- a/src/Text/Pandoc/Readers/Org/Parsing.hs
+++ b/src/Text/Pandoc/Readers/Org/Parsing.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
 
@@ -112,6 +113,7 @@ module Text.Pandoc.Readers.Org.Parsing
   , getPosition
   ) where
 
+import Prelude
 import Text.Pandoc.Readers.Org.ParserState
 
 import Text.Pandoc.Parsing hiding (F, anyLine, blanklines, newline,
diff --git a/src/Text/Pandoc/Readers/Org/Shared.hs b/src/Text/Pandoc/Readers/Org/Shared.hs
index cba72cc07..07dbeca2a 100644
--- a/src/Text/Pandoc/Readers/Org/Shared.hs
+++ b/src/Text/Pandoc/Readers/Org/Shared.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-
 Copyright (C) 2014-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
@@ -33,6 +34,7 @@ module Text.Pandoc.Readers.Org.Shared
   , translateLang
   ) where
 
+import Prelude
 import Data.Char (isAlphaNum)
 import Data.List (isPrefixOf, isSuffixOf)
 
diff --git a/src/Text/Pandoc/Readers/RST.hs b/src/Text/Pandoc/Readers/RST.hs
index 91e0b057a..566f9b959 100644
--- a/src/Text/Pandoc/Readers/RST.hs
+++ b/src/Text/Pandoc/Readers/RST.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts    #-}
 {-# LANGUAGE OverloadedStrings   #-}
 {-# LANGUAGE ScopedTypeVariables #-}
@@ -31,6 +32,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 Conversion from reStructuredText to 'Pandoc' document.
 -}
 module Text.Pandoc.Readers.RST ( readRST ) where
+import Prelude
 import Control.Arrow (second)
 import Control.Monad (forM_, guard, liftM, mplus, mzero, when)
 import Control.Monad.Except (throwError)
diff --git a/src/Text/Pandoc/Readers/TWiki.hs b/src/Text/Pandoc/Readers/TWiki.hs
index 75e3f89eb..fba7e133e 100644
--- a/src/Text/Pandoc/Readers/TWiki.hs
+++ b/src/Text/Pandoc/Readers/TWiki.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts     #-}
 {-# LANGUAGE FlexibleInstances    #-}
 {-# LANGUAGE RelaxedPolyRec       #-}
@@ -35,6 +36,7 @@ Conversion of twiki text to 'Pandoc' document.
 module Text.Pandoc.Readers.TWiki ( readTWiki
                                  ) where
 
+import Prelude
 import Control.Monad
 import Control.Monad.Except (throwError)
 import Data.Char (isAlphaNum)
diff --git a/src/Text/Pandoc/Readers/Textile.hs b/src/Text/Pandoc/Readers/Textile.hs
index fb0bbaa8a..7eef1b4dc 100644
--- a/src/Text/Pandoc/Readers/Textile.hs
+++ b/src/Text/Pandoc/Readers/Textile.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2010-2012 Paul Rivier <paul*rivier#demotera*com> | tr '*#' '.@'
               2010-2018 John MacFarlane
@@ -52,6 +53,7 @@ TODO : refactor common patterns across readers :
 
 
 module Text.Pandoc.Readers.Textile ( readTextile) where
+import Prelude
 import Control.Monad (guard, liftM)
 import Control.Monad.Except (throwError)
 import Data.Char (digitToInt, isUpper)
diff --git a/src/Text/Pandoc/Readers/TikiWiki.hs b/src/Text/Pandoc/Readers/TikiWiki.hs
index a92f7bed2..55f53ef7f 100644
--- a/src/Text/Pandoc/Readers/TikiWiki.hs
+++ b/src/Text/Pandoc/Readers/TikiWiki.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE FlexibleContexts     #-}
 {-# LANGUAGE FlexibleInstances    #-}
 {-# LANGUAGE OverloadedStrings    #-}
@@ -19,6 +20,7 @@ Conversion of TikiWiki text to 'Pandoc' document.
 module Text.Pandoc.Readers.TikiWiki ( readTikiWiki
                                     ) where
 
+import Prelude
 import Control.Monad
 import Control.Monad.Except (throwError)
 import qualified Data.Foldable as F
diff --git a/src/Text/Pandoc/Readers/Txt2Tags.hs b/src/Text/Pandoc/Readers/Txt2Tags.hs
index 64d219e9c..deac904b7 100644
--- a/src/Text/Pandoc/Readers/Txt2Tags.hs
+++ b/src/Text/Pandoc/Readers/Txt2Tags.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-
 Copyright (C) 2014 Matthew Pickering <matthewtpickering@gmail.com>
 
@@ -31,6 +32,7 @@ module Text.Pandoc.Readers.Txt2Tags ( readTxt2Tags
                                     )
                                     where
 
+import Prelude
 import Control.Monad (guard, void, when)
 import Control.Monad.Except (catchError, throwError)
 import Control.Monad.Reader (Reader, asks, runReader)
diff --git a/src/Text/Pandoc/Readers/Vimwiki.hs b/src/Text/Pandoc/Readers/Vimwiki.hs
index b0d6fbb41..824a912c3 100644
--- a/src/Text/Pandoc/Readers/Vimwiki.hs
+++ b/src/Text/Pandoc/Readers/Vimwiki.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE CPP #-}
 {-
   Copyright (C) 2017-2018 Yuchen Pei <me@ypei.me>
@@ -64,6 +65,7 @@ Conversion of vimwiki text to 'Pandoc' document.
 
 module Text.Pandoc.Readers.Vimwiki ( readVimwiki
                                  ) where
+import Prelude
 import Control.Monad (guard)
 import Control.Monad.Except (throwError)
 import Data.Default