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diff --git a/vendor/irc-client/Network/IRC/Client/Lens.hs b/vendor/irc-client/Network/IRC/Client/Lens.hs
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+-- |
+-- Module      : Network.IRC.Client.Lens
+-- Copyright   : (c) 2017 Michael Walker
+-- License     : MIT
+-- Maintainer  : Michael Walker <mike@barrucadu.co.uk>
+-- Stability   : experimental
+-- Portability : CPP
+--
+-- 'Lens'es and 'Prism's.
+module Network.IRC.Client.Lens where
+
+import           Control.Concurrent.STM            (TVar)
+import           Control.Monad.Catch               (SomeException)
+import           Data.ByteString                   (ByteString)
+import           Data.Profunctor                   (Choice(right'),
+                                                    Profunctor(dimap))
+import           Data.Text                         (Text)
+import           Data.Time                         (NominalDiffTime)
+
+import           Network.IRC.Client.Internal.Lens
+import           Network.IRC.Client.Internal.Types
+
+{-# ANN module ("HLint: ignore Redundant lambda") #-}
+
+-- CPP seem to dislike the first ' on the RHS…
+-- This style of CPP usage doesn't work with clang, which means won't work on Mac.
+{-
+#define PRIME() '
+
+#define LENS(S,F,A) \
+    {-# INLINE F #-}; \
+    {-| PRIME()Lens' for '_/**/F'. -}; \
+    F :: Lens' S A; \
+    F = \ afb s -> (\ b -> s {_/**/F = b}) <$> afb (_/**/F s)
+
+#define GETTER(S,F,A) \
+    {-# INLINE F #-}; \
+    {-| PRIME()Getter' for '_/**/F'. -}; \
+    F :: Getter S A; \
+    F = \ afb s -> (\ b -> s {_/**/F = b}) <$> afb (_/**/F s)
+
+#define PRISM(S,C,ARG,TUP,A) \
+    {-| PRIME()Prism' for 'C'. -}; \
+    {-# INLINE _/**/C #-}; \
+    _/**/C :: Prism' S A; \
+    _/**/C = dimap (\ s -> case s of C ARG -> Right TUP; _ -> Left s) \
+        (either pure $ fmap (\ TUP -> C ARG)) . right'
+
+-}
+
+-------------------------------------------------------------------------------
+-- * Lenses for 'IRCState'
+
+{-# INLINE connectionConfig #-}
+{-| 'Getter' for '_connectionConfig'. -}
+connectionConfig :: Getter (IRCState s) (ConnectionConfig s)
+connectionConfig = \ afb s -> (\ b -> s {_connectionConfig = b}) <$> afb (_connectionConfig s)
+
+{-# INLINE userState #-}
+{-| 'Lens' for '_userState'. -}
+userState :: Lens' (IRCState s) (TVar s)
+userState = \ afb s -> (\ b -> s {_userState = b}) <$> afb (_userState s)
+
+{-# INLINE instanceConfig #-}
+{-| 'Lens' for '_instanceConfig'. -}
+instanceConfig :: Lens' (IRCState s) (TVar (InstanceConfig s))
+instanceConfig = \ afb s -> (\ b -> s {_instanceConfig = b}) <$> afb (_instanceConfig s)
+
+{-# INLINE connectionState #-}
+{-| 'Lens' for '_connectionState'. -}
+connectionState :: Lens' (IRCState s) (TVar ConnectionState)
+connectionState = \ afb s -> (\ b -> s {_connectionState = b}) <$> afb (_connectionState s)
+
+-------------------------------------------------------------------------------
+-- * Lenses for 'ConnectionConfig'
+
+{-# INLINE server #-}
+{-| 'Getter' for '_server'. -}
+server :: Getter (ConnectionConfig s) ByteString
+server = \ afb s -> (\ b -> s {_server = b}) <$> afb (_server s)
+
+{-# INLINE port #-}
+{-| 'Getter' for '_port'. -}
+port :: Getter (ConnectionConfig s) Int
+port = \ afb s -> (\ b -> s {_port = b}) <$> afb (_port s)
+
+{-# INLINE username #-}
+{-| 'Lens' for '_username'. -}
+username :: Lens' (ConnectionConfig s) Text
+username = \ afb s -> (\ b -> s {_username = b}) <$> afb (_username s)
+
+{-# INLINE realname #-}
+{-| 'Lens' for '_realname'. -}
+realname :: Lens' (ConnectionConfig s) Text
+realname = \ afb s -> (\ b -> s {_realname = b}) <$> afb (_realname s)
+
+{-# INLINE password #-}
+{-| 'Lens' for '_password'. -}
+password :: Lens' (ConnectionConfig s) (Maybe Text)
+password = \ afb s -> (\ b -> s {_password = b}) <$> afb (_password s)
+
+{-# INLINE flood #-}
+{-| 'Lens' for '_flood'. -}
+flood :: Lens' (ConnectionConfig s) NominalDiffTime
+flood = \ afb s -> (\ b -> s {_flood = b}) <$> afb (_flood s)
+
+{-# INLINE timeout #-}
+{-| 'Lens' for '_timeout'. -}
+timeout :: Lens' (ConnectionConfig s) NominalDiffTime
+timeout = \ afb s -> (\ b -> s {_timeout = b}) <$> afb (_timeout s)
+
+{-# INLINE onconnect #-}
+{-| 'Lens' for '_onconnect'. -}
+onconnect :: Lens' (ConnectionConfig s) (IRC s ())
+onconnect = \ afb s -> (\ b -> s {_onconnect = b}) <$> afb (_onconnect s)
+
+{-# INLINE ondisconnect #-}
+{-| 'Lens' for '_ondisconnect'. -}
+ondisconnect :: Lens' (ConnectionConfig s) (Maybe SomeException -> IRC s ())
+ondisconnect = \ afb s -> (\ b -> s {_ondisconnect = b}) <$> afb (_ondisconnect s)
+
+{-# INLINE logfunc #-}
+{-| 'Lens' for '_logfunc'. -}
+logfunc :: Lens' (ConnectionConfig s) (Origin -> ByteString -> IO ())
+logfunc = \ afb s -> (\ b -> s {_logfunc = b}) <$> afb (_logfunc s)
+
+-------------------------------------------------------------------------------
+-- * Lenses for 'InstanceConfig'
+
+{-# INLINE nick #-}
+{-| 'Lens' for '_nick'. -}
+nick :: Lens' (InstanceConfig s) Text
+nick = \ afb s -> (\ b -> s {_nick = b}) <$> afb (_nick s)
+
+{-# INLINE channels #-}
+{-| 'Lens' for '_channels'. -}
+channels :: Lens' (InstanceConfig s) [Text]
+channels = \ afb s -> (\ b -> s {_channels = b}) <$> afb (_channels s)
+
+{-# INLINE version #-}
+{-| 'Lens' for '_version'. -}
+version :: Lens' (InstanceConfig s) Text
+version = \ afb s -> (\ b -> s {_version = b}) <$> afb (_version s)
+
+{-# INLINE handlers #-}
+{-| 'Lens' for '_version'. -}
+handlers :: Lens' (InstanceConfig s) [EventHandler s]
+handlers = \ afb s -> (\ b -> s {_handlers = b}) <$> afb (_handlers s)
+
+{-# INLINE ignore #-}
+{-| 'Lens' for '_ignore'. -}
+ignore :: Lens' (InstanceConfig s) [(Text, Maybe Text)]
+ignore = \ afb s -> (\ b -> s {_ignore = b}) <$> afb (_ignore s)
+
+-------------------------------------------------------------------------------
+-- * Prisms for 'ConnectionState'
+
+{-| 'Prism' for 'Connected'. -}
+{-# INLINE _Connected #-}
+_Connected :: Prism' ConnectionState ()
+_Connected = dimap (\ s -> case s of Connected -> Right (); _ -> Left s)
+    (either pure $ fmap (\ () -> Connected)) . right'
+
+{-| 'Prism' for 'Disconnecting'. -}
+{-# INLINE _Disconnecting #-}
+_Disconnecting :: Prism' ConnectionState ()
+_Disconnecting = dimap (\ s -> case s of Disconnecting -> Right (); _ -> Left s)
+    (either pure $ fmap (\ () -> Disconnecting)) . right'
+
+{-| 'Prism' for 'Disconnected'. -}
+{-# INLINE _Disconnected #-}
+_Disconnected :: Prism' ConnectionState ()
+_Disconnected = dimap (\ s -> case s of Disconnected -> Right (); _ -> Left s)
+    (either pure $ fmap (\ () -> Disconnected)) . right'
+
+-------------------------------------------------------------------------------
+-- * Prisms for 'Origin'
+
+{-| 'Prism' for 'FromServer'. -}
+{-# INLINE _FromServer #-}
+_FromServer :: Prism' Origin ()
+_FromServer = dimap (\ s -> case s of FromServer -> Right (); _ -> Left s)
+    (either pure $ fmap (\ () -> FromServer)) . right'
+
+{-| 'Prism' for 'FromClient'. -}
+{-# INLINE _FromClient #-}
+_FromClient :: Prism' Origin ()
+_FromClient = dimap (\ s -> case s of FromClient -> Right (); _ -> Left s)
+    (either pure $ fmap (\ () -> FromClient)) . right'