commit c3194e5e874bf7da4d9d1db3f435e902eeb60993
Author: Sergei Trofimovich <siarheit@google.com>
Date:   Wed Apr 13 09:35:29 2016 +0100

    fix tests when config-value is present in system
    
    ghci fails to disambiguate 'Config' in this case as:
    
      src/Help.hs:8:18:
        Ambiguous module name ‘Config’:
          it was found in multiple packages:
          config-value-0.4.0.1@confi_JzUyuyr9gPE2bcxdUwNhUS ghc-7.10.3
    
    Fixed by explicitly importing moduls from 'ghc' package.
    
    Signed-off-by: Sergei Trofimovich <siarheit@google.com>

diff --git a/src/Help.hs b/src/Help.hs
index b8e76cf..4c11f85 100644
--- a/src/Help.hs
+++ b/src/Help.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE PackageImports #-}
 module Help (
   usage
 , printVersion
@@ -5,7 +6,7 @@ module Help (
 
 import           Paths_doctest (version)
 import           Data.Version (showVersion)
-import           Config as GHC
+import "ghc"     Config as GHC
 import           Interpreter (ghc)
 
 usage :: String