Test.scala

//> using scala "3.2.2"
//> using lib "com.softwaremill.sttp.tapir::tapir-core:1.2.8"

package issue

import sttp.tapir.Schema

object Test {
  enum Type {
    case STRING
    case STRUCT
  }

  case class Field(name: String, tpe: Type, subfields: List[Field])


  given Schema[Type] = Schema.string
  given Schema[Field] = Schema.derived
  //implicit def fieldSchema: Schema[Field] = Schema.derived

  def main(args: Array[String]): Unit = {
    val schema = summon[Schema[Test.Field]]
    println(schema)
  }
}