fix[PrettySerialize]: Optic changes

src/Language/Java/Classfile.hs

@@ -11,6 +11,7 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE InstanceSigs #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
 module Language.Java.Classfile (Classfile(..)) where
 
 import GHC.Generics (Generic, Generically(Generically))
@@ -59,7 +60,7 @@ data family ClassFlags stage
 newtype instance ClassFlags Parse = ClassFlags (Flags ClassFlag)
   deriving stock (Show, Generic)
   deriving Extractable via Generically (ClassFlags Parse)
-  deriving PrettySerialize via Generically (ClassFlags Parse)
+  deriving newtype PrettySerialize
 
 data ClassFlag
   = Public      -- ^ may be accessed from outside the package

src/Language/Java/Classfile/Flags.hs

@@ -7,9 +7,8 @@
 {-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE DefaultSignatures #-}
-{-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE DerivingVia #-}
-{-# LANGUAGE StandaloneDeriving #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
 module Language.Java.Classfile.Flags (Flags(..), FlagMask(..), containsFlag) where
 
 
@@ -24,14 +23,13 @@ import Language.Java.Classfile.Extractable (Extractable (extract))
 import Data.Kind (Type)
 import Control.Arrow ((>>>))
 import qualified Data.List as List
-import GHC.Generics (Generic, Generically(..))
 import Pretty.Serialize (PrettySerialize)
 
 -- | Using the 'FlagMask' instance of the type parameter, this will extract all the flags whose mask produced a non-zero value using '.&.'
 
 newtype Flags a = Flags (Set a)
-  deriving (Show, Generic)
-deriving via Generically (Flags a) instance (PrettySerialize (Set a)) => PrettySerialize (Flags a)
+  deriving (Show)
+  deriving newtype PrettySerialize
 
 instance (Extractable (FlagType a), Bounded a, Enum a, Ord a, FlagMask a, Bits (FlagType a), Num (FlagType a)) => Extractable (Flags a) where
   extract :: Extract (Flags a)