Merge pull request #2390 from cocreature/master

Only print warning when starting repl

Cabal/Distribution/Simple/GHC.hs

@@ -549,9 +549,9 @@ buildOrReplLib forRepl verbosity numJobs pkg_descr lbi lib clbi = do
   -- with ghci, but .c files can depend on .h files generated by ghc by ffi
   -- exports.
 
-  when (null (libModules lib)) $
-    info verbosity "No exposed modules"
-  ifReplLib (runGhcProg replOpts)
+  ifReplLib $ do
+    when (null (libModules lib)) $ warn verbosity "No exposed modules"
+    ifReplLib (runGhcProg replOpts)
 
   -- link:
   unless forRepl $ do