implementing type-level strings...

[hs-rrdtool.git] / Data / HList / Prelude.hs

diff --git a/Data/HList/Prelude.hs b/Data/HList/Prelude.hs
index b3a88fdb0c2371d20828f9ecf802f993a431d264..3eb7e81cc37e80809878498b610dc86ee15b772a 100644 (file)
--- a/Data/HList/Prelude.hs
+++ b/Data/HList/Prelude.hs
@@ -1,3 +1,11 @@
+{-# LANGUAGE DeriveDataTypeable,
+             FlexibleContexts,
+             FlexibleInstances,
+             MultiParamTypeClasses,
+             TypeFamilies,
+             TypeOperators,
+             UndecidableInstances
+  #-}
 module Data.HList.Prelude
     ( HList