Switch to latest deque version

butcher.cabal

@@ -50,7 +50,7 @@ library
     , extra <1.7
     , void <0.8
     , bifunctors <5.6
-    , deque <0.2.2
+    , deque >=0.2.4 && <0.3
     }
   hs-source-dirs:      src
   default-language:    Haskell2010

src/UI/Butcher/Monadic/Internal/Types.hs

@@ -226,9 +226,3 @@ LensTH.makeLenses ''PartDesc
 --   show (CmdParserParam s _ _) = "(CmdParserParam " ++ s ++ ")"
 --   show (CmdParserChild s _ _) = "(CmdParserChild " ++ s ++ ")"
 --   show (CmdParserRun _) = "CmdParserRun"
-
-instance Alternative Deque where
-  empty = mempty
-  (<|>) = Deque.prepend
-
-instance MonadPlus Deque