Add explicit import lists to Stack.Options.HaddockParser

Also, some reformatting

Author: mpilgrem

src/Stack/Options/HaddockParser.hs

@@ -1,21 +1,26 @@
 {-# LANGUAGE NoImplicitPrelude #-}
 
-module Stack.Options.HaddockParser where
+module Stack.Options.HaddockParser
+  ( haddockOptsParser
+  ) where
 
-import           Options.Applicative
-import           Options.Applicative.Args
-import           Stack.Options.Utils
+import           Options.Applicative ( Parser, help, long, metavar )
+import           Options.Applicative.Args ( argsOption )
+import           Stack.Options.Utils ( hideMods )
 import           Stack.Prelude
-import           Stack.Types.Config
+import           Stack.Types.Config ( HaddockOptsMonoid (..) )
 
 -- | Parser for haddock arguments.
 haddockOptsParser :: Bool -> Parser HaddockOptsMonoid
-haddockOptsParser hide0 =
-  HaddockOptsMonoid <$> fmap (fromMaybe [])
-                             (optional
-                              (argsOption
-                               (long "haddock-arguments" <>
-                                metavar "HADDOCK_ARGS" <>
-                                help "Arguments passed to the haddock program" <>
-                                hide)))
-  where hide = hideMods hide0
+haddockOptsParser hide0 = HaddockOptsMonoid
+  <$> fmap
+        (fromMaybe [])
+        ( optional (argsOption
+            (  long "haddock-arguments"
+            <> metavar "HADDOCK_ARGS"
+            <> help "Arguments passed to the haddock program"
+            <> hide
+            ))
+        )
+ where
+  hide = hideMods hide0