summaryrefslogtreecommitdiff
path: root/compiler/prelude/PrelRules.hs
diff options
context:
space:
mode:
Diffstat (limited to 'compiler/prelude/PrelRules.hs')
-rw-r--r--compiler/prelude/PrelRules.hs4
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/prelude/PrelRules.hs b/compiler/prelude/PrelRules.hs
index f87dce4798..919a1d51fe 100644
--- a/compiler/prelude/PrelRules.hs
+++ b/compiler/prelude/PrelRules.hs
@@ -643,11 +643,11 @@ instance Functor RuleM where
fmap = liftM
instance Applicative RuleM where
- pure = return
+ pure x = RuleM $ \_ _ _ -> Just x
(<*>) = ap
instance Monad RuleM where
- return x = RuleM $ \_ _ _ -> Just x
+ return = pure
RuleM f >>= g = RuleM $ \dflags iu e -> case f dflags iu e of
Nothing -> Nothing
Just r -> runRuleM (g r) dflags iu e