Clean up warnings

  * unused imports
  * imports of `Data.List` without import lists
  * missing `CompatPrelude` file in `.cabal`

12 files changed, 9 insertions, 21 deletions

diff --git a/haddock-api/src/Haddock/Backends/Hoogle.hs b/haddock-api/src/Haddock/Backends/Hoogle.hs
index 1f98ef9c..b38d4047 100644
--- a/haddock-api/src/Haddock/Backends/Hoogle.hs
+++ b/haddock-api/src/Haddock/Backends/Hoogle.hs
@@ -27,10 +27,9 @@ import Haddock.Utils hiding (out)
 
 import GHC
 import Outputable
-import NameSet
 
 import Data.Char
-import Data.List
+import Data.List (isPrefixOf, intercalate)
 import Data.Maybe
 import Data.Version
 
diff --git a/haddock-api/src/Haddock/Backends/LaTeX.hs b/haddock-api/src/Haddock/Backends/LaTeX.hs
index f2fb1041..63b12a14 100644
--- a/haddock-api/src/Haddock/Backends/LaTeX.hs
+++ b/haddock-api/src/Haddock/Backends/LaTeX.hs
@@ -38,7 +38,7 @@ import System.FilePath
 import Data.Char
 import Control.Monad
 import Data.Maybe
-import Data.List
+import Data.List            ( sort )
 import Prelude hiding ((<>))
 
 import Haddock.Doc (combineDocumentation)
@@ -517,12 +517,6 @@ ppSubSigLike unicode typ argDocs subdocs leader = do_args 0 leader typ
     gadtOpen = char '{'
 
 
-ppForAllSeparator :: Bool -> ForallVisFlag -> LaTeX
-ppForAllSeparator unicode fvf =
-  case fvf of
-    ForallVis   -> text "\\ " <> arrow unicode
-    ForallInvis -> dot
-
 ppTypeSig :: [Name] -> HsType DocNameI  -> Bool -> LaTeX
 ppTypeSig nms ty unicode =
   hsep (punctuate comma $ map ppSymName nms)
@@ -1063,7 +1057,6 @@ ppForAllPart unicode tvs fvf = hsep (forallSymbol unicode : tvs') <> fv
            ForallVis   -> text "\\ " <> arrow unicode
            ForallInvis -> dot
 
-
 ppr_mono_lty :: LHsType DocNameI -> Bool -> LaTeX
 ppr_mono_lty ty unicode = ppr_mono_ty (unLoc ty) unicode
 
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
index c7ae15ca..b450dc94 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
@@ -36,7 +36,6 @@ import           Text.XHtml hiding     ( name, title, p, quote )
 
 import BasicTypes (PromotionFlag(..), isPromoted)
 import GHC hiding (LexicalFixity(..))
-import qualified GHC
 import GHC.Exts
 import Name
 import BooleanFormula
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs b/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
index edab4b16..0d7accfc 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
@@ -19,7 +19,7 @@ module Haddock.Backends.Xhtml.DocMarkup (
   docElement, docSection, docSection_,
 ) where
 
-import Data.List
+import Data.List (intersperse)
 import Documentation.Haddock.Markup
 import Haddock.Backends.Xhtml.Names
 import Haddock.Backends.Xhtml.Utils
diff --git a/haddock-api/src/Haddock/Interface.hs b/haddock-api/src/Haddock/Interface.hs
index c2c0d733..24568235 100644
--- a/haddock-api/src/Haddock/Interface.hs
+++ b/haddock-api/src/Haddock/Interface.hs
@@ -44,7 +44,7 @@ import Haddock.Utils
 
 import Control.Monad
 import Control.Exception (evaluate)
-import Data.List
+import Data.List (foldl', isPrefixOf, nub)
 import qualified Data.Map as Map
 import qualified Data.Set as Set
 import Text.Printf
diff --git a/haddock-api/src/Haddock/Interface/AttachInstances.hs b/haddock-api/src/Haddock/Interface/AttachInstances.hs
index 35f24ee5..685dca01 100644
--- a/haddock-api/src/Haddock/Interface/AttachInstances.hs
+++ b/haddock-api/src/Haddock/Interface/AttachInstances.hs
@@ -21,7 +21,7 @@ import Haddock.GhcUtils
 
 import Control.Applicative ((<|>))
 import Control.Arrow hiding ((<+>))
-import Data.List
+import Data.List (sortBy)
 import Data.Ord (comparing)
 import Data.Maybe ( maybeToList, mapMaybe, fromMaybe )
 import qualified Data.Map as Map
diff --git a/haddock-api/src/Haddock/Interface/Create.hs b/haddock-api/src/Haddock/Interface/Create.hs
index d5cbdaf5..b182a615 100644
--- a/haddock-api/src/Haddock/Interface/Create.hs
+++ b/haddock-api/src/Haddock/Interface/Create.hs
@@ -32,7 +32,7 @@ import Data.Bifunctor
 import Data.Bitraversable
 import qualified Data.Map as M
 import Data.Map (Map)
-import Data.List
+import Data.List (find, foldl', sortBy)
 import Data.Maybe
 import Data.Ord
 import Control.Applicative
diff --git a/haddock-api/src/Haddock/Interface/LexParseRn.hs b/haddock-api/src/Haddock/Interface/LexParseRn.hs
index 0b40ed3c..08a3c0f8 100644
--- a/haddock-api/src/Haddock/Interface/LexParseRn.hs
+++ b/haddock-api/src/Haddock/Interface/LexParseRn.hs
@@ -22,7 +22,7 @@ module Haddock.Interface.LexParseRn
 import Control.Arrow
 import Control.Monad
 import Data.Functor (($>))
-import Data.List
+import Data.List (maximumBy, (\\))
 import Data.Ord
 import Documentation.Haddock.Doc (metaDocConcat)
 import DynFlags (languageExtensions)
diff --git a/haddock-api/src/Haddock/Interface/Rename.hs b/haddock-api/src/Haddock/Interface/Rename.hs
index 72d063dc..0b122b07 100644
--- a/haddock-api/src/Haddock/Interface/Rename.hs
+++ b/haddock-api/src/Haddock/Interface/Rename.hs
@@ -22,14 +22,12 @@ import Haddock.Types
 import Bag (emptyBag)
 import GHC hiding (NoLink)
 import Name
-import Outputable ( panic )
 import RdrName (RdrName(Exact))
 import TysWiredIn (eqTyCon_RDR)
 
 import Control.Applicative
 import Control.Arrow ( first )
 import Control.Monad hiding (mapM)
-import Data.List
 import qualified Data.Map as Map hiding ( Map )
 import Prelude hiding (mapM)
 
diff --git a/haddock-api/src/Haddock/InterfaceFile.hs b/haddock-api/src/Haddock/InterfaceFile.hs
index b5be311a..3ce2fabb 100644
--- a/haddock-api/src/Haddock/InterfaceFile.hs
+++ b/haddock-api/src/Haddock/InterfaceFile.hs
@@ -26,7 +26,7 @@ import Haddock.Utils hiding (out)
 import Control.Monad
 import Data.Array
 import Data.IORef
-import Data.List
+import Data.List (mapAccumR)
 import qualified Data.Map as Map
 import Data.Map (Map)
 import Data.Word
diff --git a/haddock-api/src/Haddock/Utils.hs b/haddock-api/src/Haddock/Utils.hs
index 79673365..3eb702c9 100644
--- a/haddock-api/src/Haddock/Utils.hs
+++ b/haddock-api/src/Haddock/Utils.hs
@@ -65,7 +65,6 @@ import BasicTypes ( PromotionFlag(..) )
 import Exception (ExceptionMonad)
 import GHC
 import Name
-import Outputable ( panic )
 
 import Control.Monad ( liftM )
 import Data.Char ( isAlpha, isAlphaNum, isAscii, ord, chr )
diff --git a/haddock-api/src/Haddock/Utils/Json.hs b/haddock-api/src/Haddock/Utils/Json.hs
index e3c3dddc..2270a547 100644
--- a/haddock-api/src/Haddock/Utils/Json.hs
+++ b/haddock-api/src/Haddock/Utils/Json.hs
@@ -19,7 +19,7 @@ import Data.Char
 import Data.Int
 import Data.String
 import Data.Word
-import Data.List
+import Data.List (intersperse)
 import Data.Monoid
 
 import Data.ByteString.Builder (Builder)