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-rw-r--r--compiler/utils/Bag.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/utils/Bag.hs b/compiler/utils/Bag.hs
index 4a826fbf4a..d85465081b 100644
--- a/compiler/utils/Bag.hs
+++ b/compiler/utils/Bag.hs
@@ -6,7 +6,7 @@
Bag: an unordered collection with duplicates
-}
-{-# LANGUAGE DeriveDataTypeable, ScopedTypeVariables #-}
+{-# LANGUAGE DeriveDataTypeable, ScopedTypeVariables, CPP #-}
module Bag (
Bag, -- abstract type