scala Instantiate case class for yield

Question

I was wondering if there is a way to instantiate a case class directly from a for comprehension (in this case im using the scalaz validation functor) without having to manually feed in the parameters from the for comprehension

If you have a case class like this

  case class Rawr(id:Option[Long],int:Int)

And then assuming you do something like this

  val test = for {
    none <- None.successNel
    anotherVariable <- 3.successNel
  } yield Rawr.apply _ //This doesn't work, just here to make it compile. 
  // I want to instantiate a Rawr automatically with the variables
  // in the for comprehension instead of having to manually put in
  // none and anotherVariable 

So I can finally use it like this

  test match {
    case Success(p) => {
      //Should get a case class instance here i.e. p = Rawr(None,3)
    }
  }

The problem is, I am not getting a case class instance for p (obviously p is incorrect since I just used apply).

The reason why I am asking this, is that I have for comprehensions that provide 20+ variables, and having to feed in each variable to the case class instantiation creates a lot of boilerplate