diff --git a/Language/Haskell/GhcMod/CabalApi.hs b/Language/Haskell/GhcMod/CabalApi.hs
index 452b761..c37bd38 100644
--- a/Language/Haskell/GhcMod/CabalApi.hs
+++ b/Language/Haskell/GhcMod/CabalApi.hs
@@ -36,19 +36,16 @@ import System.FilePath
 -- | Parsing a cabal file in 'Cradle' and returns
 --   options for GHC, include directories for modules and
 --   package names of dependency.
-fromCabalFile :: [GHCOption]
-              -> Cradle
-              -> IO ([GHCOption],[IncludeDir],[Package])
-fromCabalFile ghcOptions cradle =
-    parseCabalFile cfile >>= cookInfo ghcOptions cradle
+fromCabalFile :: [GHCOption] -> Cradle -> IO CompilerOptions
+fromCabalFile ghcopts cradle =
+    parseCabalFile cfile >>= cookInfo ghcopts cradle
   where
     Just cfile = cradleCabalFile cradle
 
-cookInfo :: [GHCOption] -> Cradle -> PackageDescription
-         -> IO ([GHCOption],[IncludeDir],[Package])
-cookInfo ghcOptions cradle cabal = do
-    gopts <- getGHCOptions ghcOptions cdir $ head buildInfos
-    return (gopts,idirs,depPkgs)
+cookInfo :: [GHCOption] -> Cradle -> PackageDescription -> IO CompilerOptions
+cookInfo ghcopts cradle cabal = do
+    gopts <- getGHCOptions ghcopts cdir $ head buildInfos
+    return $ CompilerOptions gopts idirs depPkgs
   where
     wdir       = cradleCurrentDir cradle
     Just cdir  = cradleCabalDir   cradle
@@ -106,10 +103,10 @@ parseCabalFile file = do
 ----------------------------------------------------------------
 
 getGHCOptions :: [GHCOption] -> FilePath -> BuildInfo -> IO [GHCOption]
-getGHCOptions ghcOptions cdir binfo = do
+getGHCOptions ghcopts cdir binfo = do
     cabalCpp <- cabalCppOptions cdir
     let cpps = map ("-optP" ++) $ cppOptions binfo ++ cabalCpp
-    return $ ghcOptions ++ exts ++ [lang] ++ libs ++ libDirs ++ cpps
+    return $ ghcopts ++ exts ++ [lang] ++ libs ++ libDirs ++ cpps
   where
     lang = maybe "-XHaskell98" (("-X" ++) . display) $ defaultLanguage binfo
     libDirs = map ("-L" ++) $ extraLibDirs binfo
diff --git a/Language/Haskell/GhcMod/Debug.hs b/Language/Haskell/GhcMod/Debug.hs
index cd11faa..4dc6d64 100644
--- a/Language/Haskell/GhcMod/Debug.hs
+++ b/Language/Haskell/GhcMod/Debug.hs
@@ -29,11 +29,11 @@ debug :: Options
       -> FilePath     -- ^ A target file.
       -> Ghc [String]
 debug opt cradle ver fileName = do
-    (gopts, incDir, pkgs) <-
+    CompilerOptions gopts incDir pkgs <-
         if cabal then
-            liftIO $ fromCabalFile (ghcOpts opt) cradle ||> return (ghcOpts opt, [], [])
+            liftIO $ fromCabalFile (ghcOpts opt) cradle ||> return (CompilerOptions (ghcOpts opt) [] [])
           else
-            return (ghcOpts opt, [], [])
+            return (CompilerOptions (ghcOpts opt) [] [])
     [fast] <- do
         void $ initializeFlagsWithCradle opt cradle gopts True
         setTargetFiles [fileName]
diff --git a/Language/Haskell/GhcMod/GHCApi.hs b/Language/Haskell/GhcMod/GHCApi.hs
index aa07ea7..22fa21d 100644
--- a/Language/Haskell/GhcMod/GHCApi.hs
+++ b/Language/Haskell/GhcMod/GHCApi.hs
@@ -61,36 +61,39 @@ data Build = CabalPkg | SingleFile deriving Eq
 -- file or GHC session according to the 'Cradle' and 'Options'
 -- provided.
 initializeFlagsWithCradle :: GhcMonad m =>  Options -> Cradle -> [GHCOption] -> Bool -> m LogReader
-initializeFlagsWithCradle opt cradle ghcOptions logging
+initializeFlagsWithCradle opt cradle ghcopts logging
   | cabal     = withCabal |||> withoutCabal
   | otherwise = withoutCabal
   where
     cabal = isJust $ cradleCabalFile cradle
     withCabal = do
-        (gopts,idirs,depPkgs) <- liftIO $ fromCabalFile ghcOptions cradle
-        initSession CabalPkg opt gopts idirs (Just depPkgs) logging
+        compOpts <- liftIO $ fromCabalFile ghcopts cradle
+        initSession CabalPkg opt compOpts logging
     withoutCabal =
-        initSession SingleFile opt ghcOptions importDirs Nothing logging
+        initSession SingleFile opt compOpts logging
+      where
+        compOpts = CompilerOptions ghcopts importDirs []
 
 ----------------------------------------------------------------
 
 initSession :: GhcMonad m => Build
             -> Options
-            -> [GHCOption]
-            -> [IncludeDir]
-            -> Maybe [Package]
+            -> CompilerOptions
             -> Bool
             -> m LogReader
-initSession build opt cmdOpts idirs mDepPkgs logging = do
+initSession build opt compOpts logging = do
     dflags0 <- getSessionDynFlags
     (dflags1,readLog) <- setupDynamicFlags dflags0
     _ <- setSessionDynFlags dflags1
     return readLog
   where
+    cmdOpts = ghcOptions compOpts
+    idirs   = includeDirs compOpts
+    depPkgs = depPackages compOpts
     ls = lineSeparator opt
     setupDynamicFlags df0 = do
         df1 <- modifyFlagsWithOpts df0 cmdOpts
-        let df2 = modifyFlags df1 idirs mDepPkgs (expandSplice opt) build
+        let df2 = modifyFlags df1 idirs depPkgs (expandSplice opt) build
         df3 <- modifyFlagsWithOpts df2 $ ghcOpts opt
         liftIO $ setLogger logging df3 ls
 
@@ -107,14 +110,14 @@ initializeFlags opt = do
 ----------------------------------------------------------------
 
 -- FIXME removing Options
-modifyFlags :: DynFlags -> [IncludeDir] -> Maybe [Package] -> Bool -> Build -> DynFlags
-modifyFlags d0 idirs mDepPkgs splice build
+modifyFlags :: DynFlags -> [IncludeDir] -> [Package] -> Bool -> Build -> DynFlags
+modifyFlags d0 idirs pepPkgs splice build
   | splice    = setSplice d4
   | otherwise = d4
   where
     d1 = d0 { importPaths = idirs }
     d2 = setFastOrNot d1 Fast
-    d3 = maybe d2 (Gap.addDevPkgs d2) mDepPkgs
+    d3 = Gap.addDevPkgs d2 pepPkgs
     d4 | build == CabalPkg = Gap.setCabalPkg d3
        | otherwise         = d3
 
diff --git a/Language/Haskell/GhcMod/Internal.hs b/Language/Haskell/GhcMod/Internal.hs
index 069b8ea..ede6db8 100644
--- a/Language/Haskell/GhcMod/Internal.hs
+++ b/Language/Haskell/GhcMod/Internal.hs
@@ -6,6 +6,7 @@ module Language.Haskell.GhcMod.Internal (
   , GHCOption
   , Package
   , IncludeDir
+  , CompilerOptions(..)
   -- * Cabal API
   , fromCabalFile
   , parseCabalFile
diff --git a/Language/Haskell/GhcMod/Types.hs b/Language/Haskell/GhcMod/Types.hs
index b8cbebf..1e0f81a 100644
--- a/Language/Haskell/GhcMod/Types.hs
+++ b/Language/Haskell/GhcMod/Types.hs
@@ -91,13 +91,13 @@ data Cradle = Cradle {
 
 ----------------------------------------------------------------
 
--- | A single GHC option, as it would appear on the command line.
+-- | A single GHC command line option.
 type GHCOption  = String
 
--- | Include directories for modules
+-- | An include directory for modules.
 type IncludeDir = FilePath
 
--- | Package names
+-- | A package name.
 type Package    = String
 
 -- | GHC version in 'String'.
@@ -110,3 +110,10 @@ type Expression = String
 type ModuleString = String
 
 data CheckSpeed = Slow | Fast
+
+-- | Option information for GHC
+data CompilerOptions = CompilerOptions {
+    ghcOptions  :: [GHCOption]  -- ^ Command line options
+  , includeDirs :: [IncludeDir] -- ^ Include directories for modules
+  , depPackages :: [Package]    -- ^ Dependent package names
+  }