1 files changed, 25 insertions, 0 deletions
diff --git a/devel/hs-DrIFT/files/patch-src_ParseLib2.hs b/devel/hs-DrIFT/files/patch-src_ParseLib2.hs
new file mode 100644
index 000000000000..19cfa80fac8d
--- /dev/null
+++ b/devel/hs-DrIFT/files/patch-src_ParseLib2.hs
@@ -0,0 +1,25 @@
+--- src/ParseLib2.hs.orig	2013-11-11 15:22:00 UTC
++++ src/ParseLib2.hs
+@@ -32,6 +32,7 @@ module ParseLib2
+     opt, skipUntil, skipUntilOff,skipUntilParse,skipNest) where
+ 
+ import Data.Char
++import Control.Applicative (Alternative, empty, (<|>))
+ import Control.Monad
+ 
+ infixr 5 +++
+@@ -62,6 +63,14 @@ instance MonadPlus Parser where
+    -- mplus            :: Parser a -> Parser a -> Parser a
+    (P p) `mplus` (P q)    = P (\pos inp -> (p pos inp ++ q pos inp))
+ 
++instance Applicative Parser where
++   pure  = return
++   (<*>) = ap
++
++instance Alternative Parser where
++   empty = mzero
++   (<|>) = mplus
++
+ -- bits which donn't fit into Haskell's type classes just yet :-(
+ 
+ env :: Parser Pos