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-rw-r--r--compiler/utils/Digraph.lhs7
1 files changed, 7 insertions, 0 deletions
diff --git a/compiler/utils/Digraph.lhs b/compiler/utils/Digraph.lhs
index aa0f654e0c..1bb460674c 100644
--- a/compiler/utils/Digraph.lhs
+++ b/compiler/utils/Digraph.lhs
@@ -3,6 +3,13 @@
%
\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 ScopedTypeVariables #-}
module Digraph(
Graph, graphFromVerticesAndAdjacency, graphFromEdgedVertices,