Run with `scala-cli run caliban-demo.sc` or `scala-cli run https://gist.github.com/lbialy/c9aa46136f3ee7897600c697de273567`

caliban-demo.sc

//> using dep com.github.ghostdogpr::caliban-quick:2.5.0

enum Origin {
  case EARTH, MARS, BELT
}

case class Character(
  name: String,
  nicknames: List[String],
  origin: Origin
)

case class CharactersArgs(origin: Option[Origin])
case class CharacterArgs(name: String)

case class Query(
  characters: CharactersArgs => List[Character],
  character: CharacterArgs => Option[Character]
)

import caliban.*
import caliban.schema.ArgBuilder.auto.*
import caliban.schema.Schema.auto.*

println(render[Query])