// Similar situation, but using OptionT
val opt: Option[String] = Some("log")
val r:   OptionT[IO, String] = optionT(opt.point[IO])

// Case in hand, using WriterT
val wr: Writer[String, Unit] = "log".tell
val r:  WriterT[IO, String, Unit] = ???

// Similar scenario
val wr: Writer[String, Int] = 3.set("log")
val r:  WriterT[IO, String, Int] = ???