Warnings fixes.

Signed-off-by: Edward Z. Yang <[email protected]>

Author: ezyang

cabal-install/Distribution/Client/SrcDist.hs

@@ -21,7 +21,7 @@ import Distribution.PackageDescription.Parse
          ( readPackageDescription )
 import Distribution.Simple.Utils
          ( createDirectoryIfMissingVerbose, defaultPackageDesc
-         , debug, warn, die, notice, withTempDirectory )
+         , warn, die, notice, withTempDirectory )
 import Distribution.Client.Setup
          ( SDistFlags(..), SDistExFlags(..), ArchiveFormat(..) )
 import Distribution.Simple.Setup
@@ -35,7 +35,7 @@ import Distribution.Verbosity (Verbosity, normal, lessVerbose)
 import Distribution.Version   (Version(..), orLaterVersion)
 
 import Distribution.Client.Utils
-  (removeExistingFile, tryCanonicalizePath, tryFindAddSourcePackageDesc)
+  (removeExistingFile, tryFindAddSourcePackageDesc)
 import Distribution.Compat.Exception                 (catchIO)
 
 import System.FilePath ((</>), (<.>))