Can't get operationName

build.sbt

ThisBuild / version := "0.1.0-SNAPSHOT"

ThisBuild / scalaVersion := "2.13.8"

lazy val root = (project in file("."))
  .settings(
    name := "opname",
    libraryDependencies ++= Seq("com.github.ghostdogpr" %% "caliban" % "1.4.1")
  )

Main.scala

package opname
import caliban.GraphQL.graphQL
import caliban.{CalibanError, GraphQLRequest, GraphQLResponse, RootResolver}
import caliban.wrappers.Wrapper.OverallWrapper
import zio.{UIO, ZIO}

case class Query(hello: String)

object Main {

  val wrapper = new OverallWrapper[Any] {
    override def wrap[R1 <: Any](
        f: GraphQLRequest => ZIO[R1, Nothing, GraphQLResponse[CalibanError]]
    ): GraphQLRequest => ZIO[R1, Nothing, GraphQLResponse[CalibanError]] =
      request =>
        for {
          // operationName always seems to be None
          _ <- UIO(println(s"operationName: ${request.operationName}"))
          result <- f(request)
        } yield result
  }

  def main(args: Array[String]): Unit = {
    val query = Query("World!")
    val api = graphQL(RootResolver(query)) @@ wrapper
    val io = for {
      interpreter <- api.interpreter
      result <- interpreter.execute("query MyOp {hello}")
    } yield println(result)
    zio.Runtime.default.unsafeRun(io)
  }
}

output.txt

operationName: None
GraphQLResponse({"hello":"World!"},List(),None)