XXX: aeson, generics, Polysemy.Plugin

ghc: panic! (the 'impossible' happened)
  (GHC version 8.10.1:
	mergeSATInfo
  Left:SVSVSVSVSVSVSV, Right:NSNSNSNSNSNSSC
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/utils/Outputable.hs:1179:37 in ghc:Outputable
        pprPanic, called at compiler/simplCore/SAT.hs:152:20 in ghc:SAT

src/Polytype/Asciinema.hs

@@ -5,6 +5,7 @@ Description : Asciinema compatibility and asciicast v2 implementation
 {-# LANGUAGE DeriveAnyClass #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# OPTIONS_GHC -fplugin=Polysemy.Plugin #-}
 
 module Polytype.Asciinema where