better logging

Author: andreabedini

cabal-install/src/Distribution/Client/SetupWrapper.hs

@@ -545,7 +545,7 @@ internalSetupMethod verbosity options bt args = do
     "Using internal setup method with build-type "
       ++ show bt
       ++ " and args:\n  "
-      ++ show args
+      ++ unwords args
   -- NB: we do not set the working directory of the process here, because
   -- we will instead pass the -working-dir flag when invoking the Setup script.
   -- Note that the Setup script is guaranteed to support this flag, because
@@ -618,7 +618,7 @@ selfExecSetupMethod verbosity options bt args0 = do
     "Using self-exec internal setup method with build-type "
       ++ show bt
       ++ " and args:\n  "
-      ++ show args
+      ++ unwords args
   path <- getExecutablePath
   invoke verbosity path args options
 

cabal-testsuite/PackageTests/CustomPreProcess/Setup.hs

@@ -60,5 +60,5 @@ main = defaultMainWithHooks
       do exitCode <- rawSystem path args
          case exitCode of ExitSuccess       -> return ()
                           f@(ExitFailure _) -> fail $ "callProcess " ++ show path
-                                               ++ " " ++ show args ++ " failed: "
+                                               ++ " " ++ unwords args ++ " failed: "
                                                ++ show f