Kotlin coroutines and Arrow are a nice way to avoid nesting flatmaps, introducing monadic comprehensions in Kotlin. However Kotlin's Flow type still relies on declarative flatmapping, so we get into a mixture of direct and declarative styles:

    override suspend fun findAll(page: Pageable): Either<BusinessException, Flow<PageElement<ClientOut>>> = either {
        val count = clientRepository.count().awaitSingle().bind()
        return clientRepository.findByIdNotNull(page).asFlow()
            .flatMapMerge { client ->
                flow { emit(mapDetailedClientOut(client)) }
            }
    }

val count has been bound inside the either {...} comprehension. However, there doesn't seem to be a way to do the same with Flow, forcing us to nest a flatmapMerge().

Is there a way to do it, or is it planned to be somehow included in the near future?