@romainguy i'm not really trying to parcelize the function itself, it's just there in a class meant to be parcelable. https://github.com/Zhuinden/compose-simple-stack-experiment/blob/f7acae17862dba235bfa3e0ce59a365ccc78b9b7/app/src/main/java/com/zhuinden/firstcomposeapp/FirstKey.kt#L11-L14