Using `getAndDiscreteUpdates` and `mapN` and it still works

Demo.scala

//> using lib "co.fs2::fs2-core:3.7.0-RC4"
import cats.effect.IOApp
import cats.effect.IO
import scala.concurrent.duration._
import cats.effect.std.UUIDGen
import cats.implicits._
import scala.util.Random
import fs2.concurrent.Signal

object Demo extends IOApp.Simple {

  override def run: IO[Unit] =
    fs2
      .Stream
      .never[IO]
      .covaryOutput[Int]
      .holdResource(0)
      .flatMap { currentPosSig =>
        fs2
          .Stream
          .repeatEval(
            IO(Map("foo" -> Random.nextInt()))
          )
          .metered(1.second)
          .debug()
          .holdResource(Map.empty)
          .flatMap { sig2 =>
            val v: Signal[cats.effect.IO, String] = (sig2, currentPosSig)
              .mapN { (payload, myCoords) =>
                payload + ("You" -> myCoords)
              }
              .map(_.toString)

            v.getAndDiscreteUpdates.flatMap { (v, updates) =>
              IO.println(v).toResource *>
                updates.debug().compile.drain.background
            }
          }
      }
      .useForever

}