[commit: packages/containers] develop, develop-0.6, develop-0.6-questionable, master, zip-devel: tree: Fix imports for the Applicative/Monad change (c40e6dd)
git at git.haskell.org
git at git.haskell.org
Sun Dec 20 16:20:19 UTC 2015
Repository : ssh://git@git.haskell.org/containers
On branches: develop,develop-0.6,develop-0.6-questionable,master,zip-devel
Link : http://git.haskell.org/packages/containers.git/commitdiff/c40e6dd40861d788ee0cc337775d803d8907b6ff
>---------------------------------------------------------------
commit c40e6dd40861d788ee0cc337775d803d8907b6ff
Author: Austin Seipp <aseipp at pobox.com>
Date: Mon May 12 07:31:59 2014 -0500
tree: Fix imports for the Applicative/Monad change
Due to various problems with orphans and cycles in base, while
implementing the Applicative/Monad Proposal, Alternative joined
MonadPlus in Control.Monad.
A knock-on effect of this is that Control.Monad now exports 'empty',
which conflicts with Data.Sequence in this case. Luckily the fix is
actually quite easy: just restrict the imports to liftM, since that's
all we use anyway.
Signed-off-by: Austin Seipp <aseipp at pobox.com>
>---------------------------------------------------------------
c40e6dd40861d788ee0cc337775d803d8907b6ff
Data/Tree.hs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Data/Tree.hs b/Data/Tree.hs
index 56af20f..dab25c2 100644
--- a/Data/Tree.hs
+++ b/Data/Tree.hs
@@ -32,7 +32,7 @@ module Data.Tree(
) where
import Control.Applicative (Applicative(..), (<$>))
-import Control.Monad
+import Control.Monad (liftM)
import Data.Monoid (Monoid(..))
import Data.Sequence (Seq, empty, singleton, (<|), (|>), fromList,
ViewL(..), ViewR(..), viewl, viewr)
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