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-rw-r--r--compiler/simplCore/CoreMonad.lhs7
1 files changed, 7 insertions, 0 deletions
diff --git a/compiler/simplCore/CoreMonad.lhs b/compiler/simplCore/CoreMonad.lhs
index 6ad402c789..950c6a9a75 100644
--- a/compiler/simplCore/CoreMonad.lhs
+++ b/compiler/simplCore/CoreMonad.lhs
@@ -4,6 +4,13 @@
\section[CoreMonad]{The core pipeline monad}
\begin{code}
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
{-# LANGUAGE UndecidableInstances #-}
module CoreMonad (