Fix some warnings

src/Control/Monad/ReaderIO.hs

@@ -38,8 +38,6 @@ instance Applicative (ReaderIO e) where
   liftA2 = liftM2
   {-# INLINE liftA2 #-}
 #endif
-  (*>) = (>>)
-  {-# INLINE (*>) #-}
 
 instance Monad (ReaderIO e) where
   ReaderIO q >>= f = ReaderIO $ \e -> q e >>= \a -> runReaderIO (f a) e

src/Data/AppendMap.hs

@@ -30,9 +30,11 @@ import qualified Data.Map.Internal.Debug as Map (showTree, showTreeWith)
 #else
 import qualified Data.Map as Map (showTree, showTreeWith)
 #endif
+#if !MIN_VERSION_witherable(0,3,2)
 import qualified Data.Witherable as W
-import Data.Map.Monoidal
 import qualified Data.Map.Monoidal as MonoidalMap
+#endif
+import Data.Map.Monoidal
 
 
 {-# DEPRECATED AppendMap "Use 'MonoidalMap' instead" #-}

src/Reflex/Class.hs

@@ -202,7 +202,6 @@ import qualified Data.Dependent.Map as DMap
 import Data.Functor.Compose
 import Data.Functor.Product
 import Data.GADT.Compare (GEq (..), GCompare (..))
-import Data.FastMutableIntMap (PatchIntMap)
 import Data.Foldable
 import Data.Functor.Bind
 import Data.Functor.Misc
@@ -218,8 +217,13 @@ import Data.String
 import Data.These
 import Data.Type.Coercion
 import Data.Type.Equality ((:~:) (..))
+#if MIN_VERSION_witherable(0,4,0)
+import Witherable (Filterable(..))
+import qualified Witherable as W
+#else
 import Data.Witherable (Filterable(..))
 import qualified Data.Witherable as W
+#endif
 import Reflex.FunctorMaybe (FunctorMaybe)
 import qualified Reflex.FunctorMaybe
 import Data.Patch
@@ -678,14 +682,17 @@ instance (Reflex t, IsString a) => IsString (Behavior t a) where
 instance Reflex t => Monad (Behavior t) where
   a >>= f = pull $ sample a >>= sample . f
   -- Note: it is tempting to write (_ >> b = b); however, this would result in (fail x >> return y) succeeding (returning y), which violates the law that (a >> b = a >>= \_ -> b), since the implementation of (>>=) above actually will fail.  Since we can't examine 'Behavior's other than by using sample, I don't think it's possible to write (>>) to be more efficient than the (>>=) above.
-  return = constant
 #if !MIN_VERSION_base(4,13,0)
   fail = error "Monad (Behavior t) does not support fail"
 #endif
 
+instance (Reflex t, Semigroup a) => Semigroup (Behavior t a) where
+  a <> b = pull $ liftM2 (<>) (sample a) (sample b)
+  sconcat = pull . fmap sconcat . mapM sample
+  stimes n = fmap $ stimes n
+
 instance (Reflex t, Monoid a) => Monoid (Behavior t a) where
   mempty = constant mempty
-  mappend a b = pull $ liftM2 mappend (sample a) (sample b)
   mconcat = pull . fmap mconcat . mapM sample
 
 instance (Reflex t, Num a) => Num (Behavior t a) where
@@ -706,11 +713,6 @@ instance (Num a, Reflex t) => Num (Dynamic t a) where
   negate = fmap negate
   (-) = liftA2 (-)
 
-instance (Reflex t, Semigroup a) => Semigroup (Behavior t a) where
-  a <> b = pull $ liftM2 (<>) (sample a) (sample b)
-  sconcat = pull . fmap sconcat . mapM sample
-  stimes n = fmap $ stimes n
-
 -- | Alias for 'mapMaybe'
 fmapMaybe :: Filterable f => (a -> Maybe b) -> f a -> f b
 fmapMaybe = mapMaybe
@@ -1157,7 +1159,6 @@ instance (Reflex t, Semigroup a) => Semigroup (Dynamic t a) where
 instance (Reflex t, Monoid a) => Monoid (Dynamic t a) where
   mconcat = distributeListOverDynWith mconcat
   mempty = constDyn mempty
-  mappend = zipDynWith mappend
 
 -- | This function converts a 'DMap' whose elements are 'Dynamic's into a
 -- 'Dynamic' 'DMap'.  Its implementation is more efficient than doing the same

src/Reflex/Dynamic.hs

@@ -82,7 +82,6 @@ import Data.Functor.Compose
 import Data.Functor.Misc
 import Reflex.Class
 
-import Control.Monad
 import Control.Monad.Fix
 import Control.Monad.Identity
 import Data.Align
@@ -91,11 +90,9 @@ import qualified Data.Dependent.Map as DMap
 import Data.Dependent.Sum (DSum (..))
 import Data.GADT.Compare (GCompare (..), GEq (..), GOrdering (..))
 import Data.IntMap (IntMap)
-import qualified Data.IntMap as IntMap
 import Data.Kind (Type)
 import Data.Map (Map)
 import Data.Maybe
-import Data.Monoid ((<>))
 import Data.These
 import Data.Type.Equality ((:~:) (..))
 

src/Reflex/Dynamic/TH.hs

@@ -20,7 +20,6 @@ import Reflex.Dynamic
 import Control.Monad.State
 import Data.Data
 import Data.Generics
-import Data.Monoid ((<>))
 import qualified Language.Haskell.Exts as Hs
 import qualified Language.Haskell.Meta.Syntax.Translate as Hs
 import Language.Haskell.TH

src/Reflex/Dynamic/Uniq.hs

@@ -14,7 +14,6 @@ module Reflex.Dynamic.Uniq
   , alreadyUniqDynamic
   ) where
 
-import Control.Applicative (Applicative (..))
 import GHC.Exts
 import Reflex.Class
 
@@ -101,5 +100,3 @@ instance Reflex t => Applicative (UniqDynamic t) where
 
 instance Reflex t => Monad (UniqDynamic t) where
   UniqDynamic x >>= f = uniqDynamic $ x >>= unUniqDynamic . f
-  _ >> b = b
-  return = pure

src/Reflex/DynamicWriter/Base.hs

@@ -36,7 +36,6 @@ import Data.IntMap (IntMap)
 import qualified Data.IntMap as IntMap
 import Data.Map (Map)
 import qualified Data.Map as Map
-import Data.Semigroup (Semigroup(..))
 import Data.Some (Some)
 import Data.These
 

src/Reflex/EventWriter/Class.hs

@@ -11,7 +11,6 @@ module Reflex.EventWriter.Class
   ) where
 
 import Control.Monad.Reader (ReaderT, lift)
-import Data.Semigroup (Semigroup)
 
 import Reflex.Class (Event)
 

src/Reflex/FunctorMaybe.hs

@@ -19,7 +19,11 @@ import Data.Map (Map)
 #if !MIN_VERSION_base(4,16,0)
 import Data.Semigroup (Option(..))
 #endif
+#if MIN_VERSION_witherable(0,4,0)
+import Witherable
+#else
 import Data.Witherable
+#endif
 
 --TODO: See if there's a better class in the standard libraries already
 

src/Reflex/PostBuild/Base.hs

@@ -55,7 +55,6 @@ runPostBuildT (PostBuildT a) = runReaderT a
 -- TODO: Monoid and Semigroup can likely be derived once ReaderT has them.
 instance (Monoid a, Applicative m) => Monoid (PostBuildT t m a) where
   mempty = pure mempty
-  mappend = liftA2 mappend
 
 instance (S.Semigroup a, Applicative m) => S.Semigroup (PostBuildT t m a) where
   (<>) = liftA2 (S.<>)

src/Reflex/Profiled.hs

@@ -36,7 +36,6 @@ import Data.List
 import Data.Kind (Type)
 import Data.Map (Map)
 import qualified Data.Map.Strict as Map
-import Data.Monoid ((<>))
 import Data.Ord
 import Data.Profunctor.Unsafe ((#.))
 import qualified Data.Semigroup as S

src/Reflex/Query/Base.hs

@@ -40,7 +40,6 @@ import qualified Data.IntMap as IntMap
 import Data.Kind (Type)
 import Data.Map (Map)
 import qualified Data.Map as Map
-import Data.Monoid ((<>))
 import qualified Data.Semigroup as S
 import Data.Some (Some(Some))
 import Data.These

src/Reflex/Query/Class.hs

@@ -37,7 +37,6 @@ import Data.Ix
 import Data.Kind (Type)
 import Data.Map.Monoidal (MonoidalMap)
 import qualified Data.Map.Monoidal as MonoidalMap
-import Data.Semigroup (Semigroup(..))
 import Data.Void
 import Data.Monoid hiding ((<>))
 import Foreign.Storable

src/Reflex/Requester/Base.hs

@@ -69,9 +69,7 @@ import qualified Data.IntMap.Strict as IntMap
 import Data.Kind (Type)
 import Data.Map (Map)
 import qualified Data.Map as Map
-import Data.Monoid ((<>))
 import Data.Proxy
-import qualified Data.Semigroup as S
 import Data.Some (Some(Some))
 import Data.Type.Equality
 import Data.Unique.Tag
@@ -306,10 +304,9 @@ instance PrimMonad m => PrimMonad (RequesterT t request response m) where
 -- TODO: Monoid and Semigroup can likely be derived once StateT has them.
 instance (Monoid a, Monad m) => Monoid (RequesterT t request response m a) where
   mempty = pure mempty
-  mappend = liftA2 mappend
 
-instance (S.Semigroup a, Monad m) => S.Semigroup (RequesterT t request response m a) where
-  (<>) = liftA2 (S.<>)
+instance (Semigroup a, Monad m) => Semigroup (RequesterT t request response m a) where
+  (<>) = liftA2 (<>)
 
 
 -- | Run a 'RequesterT' action.  The resulting 'Event' will fire whenever

src/Reflex/Spider/Internal.hs

@@ -42,14 +42,16 @@ import Control.Monad.Reader.Class
 import Control.Monad.IO.Class
 import Control.Monad.ReaderIO
 import Control.Monad.Ref
+#if !MIN_VERSION_base(4,13,0)
 import Control.Monad.Fail (MonadFail)
+#endif
 import qualified Control.Monad.Fail as MonadFail
 import Data.Align
 import Data.Coerce
 import Data.Dependent.Map (DMap)
 import qualified Data.Dependent.Map as DMap
 import Data.Dependent.Sum (DSum (..))
-import Data.FastMutableIntMap (FastMutableIntMap, PatchIntMap (..))
+import Data.FastMutableIntMap (FastMutableIntMap)
 import qualified Data.FastMutableIntMap as FastMutableIntMap
 import Data.Foldable hiding (concat, elem, sequence_)
 import Data.Functor.Constant
@@ -61,12 +63,15 @@ import qualified Data.IntMap.Strict as IntMap
 import Data.IORef
 import Data.Kind (Type)
 import Data.Maybe hiding (mapMaybe)
-import Data.Monoid (mempty, (<>))
 import Data.Proxy
 import Data.These
 import Data.Traversable
 import Data.Type.Equality ((:~:)(Refl))
+#if MIN_VERSION_witherable(0,4,0)
+import Witherable (Filterable, mapMaybe)
+#else
 import Data.Witherable (Filterable, mapMaybe)
+#endif
 import GHC.Exts hiding (toList)
 import GHC.IORef (IORef (..))
 import GHC.Stack
@@ -91,7 +96,10 @@ import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
 import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
 import qualified Data.List.NonEmpty as NonEmpty
 import Data.Tree (Forest, Tree (..), drawForest)
+
+#ifdef DEBUG_HIDE_INTERNALS
 import Data.List (isPrefixOf)
+#endif
 
 import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
 import qualified Data.FastWeakBag as FastWeakBag
@@ -990,10 +998,6 @@ newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderIO (BehaviorEnv x) a }
 instance Monad (BehaviorM x) where
   {-# INLINE (>>=) #-}
   BehaviorM x >>= f = BehaviorM $ x >>= unBehaviorM . f
-  {-# INLINE (>>) #-}
-  BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
-  {-# INLINE return #-}
-  return x = BehaviorM $ return x
 #if !MIN_VERSION_base(4,13,0)
   {-# INLINE fail #-}
   fail s = BehaviorM $ fail s
@@ -1093,7 +1097,7 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
     _ -> IntMap.insert h (pred old) c
 
 heightBagRemoveMaybe :: Height -> HeightBag -> Maybe HeightBag
-heightBagRemoveMaybe (Height h) b@(HeightBag s c) = heightBagVerify . removed <$> IntMap.lookup h c where
+heightBagRemoveMaybe (Height h) (HeightBag s c) = heightBagVerify . removed <$> IntMap.lookup h c where
   removed old = HeightBag (pred s) $ case old of
     0 -> IntMap.delete h c
     _ -> IntMap.insert h (pred old) c
@@ -1470,7 +1474,7 @@ filterStack :: String -> [String] -> [String]
 #ifdef DEBUG_HIDE_INTERNALS
 filterStack prefix = filter (not . (prefix `isPrefixOf`))
 #else
-filterStack prefix = id
+filterStack _prefix = id
 #endif
 
 #ifdef DEBUG_CYCLES
@@ -2548,12 +2552,8 @@ instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (Spide
 
 
 instance HasSpiderTimeline x => Monad (Reflex.Class.Dynamic (SpiderTimeline x)) where
-  {-# INLINE return #-}
-  return = pure
   {-# INLINE (>>=) #-}
   x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
-  {-# INLINE (>>) #-}
-  (>>) = (*>)
 #if !MIN_VERSION_base(4,13,0)
   {-# INLINE fail #-}
   fail _ = error "Dynamic does not support 'fail'"
@@ -2834,15 +2834,12 @@ instance MonadAtomicRef (EventM x) where
   atomicModifyRef r f = liftIO $ atomicModifyRef r f
 
 -- | The monad for actions that manipulate a Spider timeline identified by @x@
-newtype SpiderHost (x :: Type) a = SpiderHost { unSpiderHost :: IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
+newtype SpiderHost (x :: Type) a = SpiderHost { unSpiderHost :: IO a }
+  deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
 
 instance Monad (SpiderHost x) where
   {-# INLINABLE (>>=) #-}
   SpiderHost x >>= f = SpiderHost $ x >>= unSpiderHost . f
-  {-# INLINABLE (>>) #-}
-  SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
-  {-# INLINABLE return #-}
-  return x = SpiderHost $ return x
 #if !MIN_VERSION_base(4,13,0)
   {-# INLINABLE fail #-}
   fail = MonadFail.fail
@@ -2868,10 +2865,6 @@ newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame ::
 instance Monad (SpiderHostFrame x) where
   {-# INLINABLE (>>=) #-}
   SpiderHostFrame x >>= f = SpiderHostFrame $ x >>= runSpiderHostFrame . f
-  {-# INLINABLE (>>) #-}
-  SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
-  {-# INLINABLE return #-}
-  return x = SpiderHostFrame $ return x
 #if !MIN_VERSION_base(4,13,0)
   {-# INLINABLE fail #-}
   fail s = SpiderHostFrame $ fail s

src/Reflex/Time.hs

@@ -33,7 +33,6 @@ import Control.Monad.IO.Class
 import Data.Align
 import Data.Data (Data)
 import Data.Fixed
-import Data.Semigroup (Semigroup(..))
 import Data.Sequence (Seq, (|>))
 import qualified Data.Sequence as Seq
 import Data.These

src/Reflex/TriggerEvent/Base.hs

@@ -22,7 +22,6 @@ import Control.Monad.Ref
 import Data.Coerce
 import Data.Dependent.Sum
 import Data.IORef
-import Data.Monoid ((<>))
 import qualified Data.Semigroup as S
 import Reflex.Class
 import Reflex.Adjustable.Class