Remove more CPP

ihaskell-display/ihaskell-charts/IHaskell/Display/Charts.hs

-{-# LANGUAGE CPP #-}
-
 module IHaskell.Display.Charts () where
 
 import           System.Directory
@@ -34,7 +32,7 @@ chartData renderable format = do
   -- Write the PNG image.
   let filename = ".ihaskell-chart.png"
       opts = def { _fo_format = format, _fo_size = (width, height) }
-  mkFile opts filename renderable
+  renderableToFile opts filename renderable
 
   -- Convert to base64.
   imgData <- Char.readFile filename
@@ -42,8 +40,3 @@ chartData renderable format = do
     case format of
       PNG -> png width height $ base64 imgData
       SVG -> svg $ Char.unpack imgData
-#if MIN_VERSION_Chart_cairo(1,3,0)
-mkFile opts filename renderable = renderableToFile opts filename renderable
-#else
-mkFile opts filename renderable = renderableToFile opts renderable filename
-#endif

src/IHaskell/Eval/Util.hs

@@ -63,11 +63,9 @@ import           StringUtils (replace)
 import           CmdLineParser (warnMsg)
 #endif
 
-#if MIN_VERSION_ghc(8,0,1)
 import           GHC.LanguageExtensions
 
 type ExtensionFlag = Extension
-#endif
 
 -- | A extension flag that can be set or unset.
 data ExtFlag = SetFlag ExtensionFlag
@@ -265,11 +263,7 @@ initGhci sandboxPackages = do
   originalFlags <- getSessionDynFlags
   let flag = flip xopt_set
       unflag = flip xopt_unset
-#if MIN_VERSION_ghc(8,0,0)
       dflags = flag ExtendedDefaultRules . unflag MonomorphismRestriction $ originalFlags
-#else
-      dflags = flag Opt_ExtendedDefaultRules . unflag Opt_MonomorphismRestriction $ originalFlags
-#endif
 #if MIN_VERSION_ghc(8,2,0)
       pkgFlags =
         case sandboxPackages of

src/IHaskell/IPython.hs

 {-# language NoImplicitPrelude, DoAndIfThenElse, OverloadedStrings, ExtendedDefaultRules #-}
-{-# LANGUAGE CPP #-}
 
 -- | Description : Shell scripting wrapper using @Shelly@ for the @notebook@, and
 --                 @console@ commands.
@@ -278,16 +277,6 @@ getIHaskellPath = do
           Nothing   -> error "ihaskell not on $PATH and not referenced relative to directory."
           Just path -> return $ T.unpack $ SH.toTextIgnore path
       else liftIO $ makeAbsolute f
-#if !MIN_VERSION_directory(1, 2, 2)
--- This is included in later versions of `directory`, but we cannot use later versions because GHC
--- library depends on a particular version of it.
-makeAbsolute :: FilePath -> IO FilePath
-makeAbsolute = fmap FP.normalise . absolutize
-  where
-    absolutize path -- avoid the call to `getCurrentDirectory` if we can
-      | FP.isRelative path = fmap (FP.</> path) getCurrentDirectory
-      | otherwise = return path
-#endif
 getSandboxPackageConf :: IO (Maybe String)
 getSandboxPackageConf = SH.shelly $ do
   myPath <- getIHaskellPath

src/tests/IHaskell/Test/Completion.hs

 {-# language NoImplicitPrelude, DoAndIfThenElse, OverloadedStrings, ExtendedDefaultRules #-}
-{-# LANGUAGE CPP #-}
 module IHaskell.Test.Completion (testCompletions) where
 
 import           Prelude
@@ -23,12 +22,8 @@ import           IHaskell.Eval.Completion (complete, CompletionType(..), complet
                                            completionTarget)
 import           IHaskell.Test.Util (replace, shouldBeAmong, ghc)
 
-#if !MIN_VERSION_base(4,8,0)
-import           Control.Applicative ((<$>))
-#endif
-
 -- | @readCompletePrompt "xs*ys"@ return @(xs, i)@ where i is the location of
--- @'*'@ in the input string. 
+-- @'*'@ in the input string.
 readCompletePrompt :: String -> (String, Int)
 readCompletePrompt string =
   case elemIndex '*' string of
@@ -197,7 +192,7 @@ inDirectory :: [Shelly.FilePath] -- ^ directories relative to temporary director
             -> [Shelly.FilePath] -- ^ files relative to temporary directory
             -> (Shelly.FilePath -> Interpreter a)
             -> IO a
--- | Run an Interpreter action, but first make a temporary directory 
+-- | Run an Interpreter action, but first make a temporary directory
 --   with some files and folder and cd to it.
 inDirectory dirs files action = shelly $ withTmpDir $ \dirPath -> do
   cd dirPath

src/tests/IHaskell/Test/Parser.hs

 {-# LANGUAGE QuasiQuotes #-}
-{-# LANGUAGE CPP #-}
 module IHaskell.Test.Parser (testParser) where
 
 import           Prelude
@@ -15,11 +14,6 @@ import           IHaskell.Eval.Parser (parseString, getModuleName, unloc, layout
                                        CodeBlock(..), DirectiveType(..), StringLoc(..), PragmaType(..))
 import           IHaskell.Eval.ParseShell (parseShell)
 
-#if !MIN_VERSION_base(4,8,0)
-import           Control.Applicative ((<$>))
-#endif
-
-
 parses :: String -> IO [CodeBlock]
 parses str = map unloc <$> ghc (parseString str)