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-rw-r--r--utils/ghc-pkg/Main.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/utils/ghc-pkg/Main.hs b/utils/ghc-pkg/Main.hs
index cc634ea358..829034578a 100644
--- a/utils/ghc-pkg/Main.hs
+++ b/utils/ghc-pkg/Main.hs
@@ -577,7 +577,7 @@ writeNewConfig filename packages = do
hPutStrLn stdout "done."
savingOldConfig :: FilePath -> IO () -> IO ()
-savingOldConfig filename io = do
+savingOldConfig filename io = Exception.block $ do
hPutStr stdout "Saving old package config file... "
-- mv rather than cp because we've already done an hGetContents
-- on this file so we won't be able to open it for writing