Bad encoding in ZIO Yaml

ZioYamlTest.scala

package test.yaml

import zio.json._
import zio.json.yaml._

// Default indentation seems broken in YAML.
// If we change zio.json.yaml.JsonOps to add `setIndentWithIndicator(true)` it seems to work
//
//        dumperOptions.setLineBreak(options.lineBreak)
//     +  dumperOptions.setIndentWithIndicator(true)

object ZioYamlTest {

  final case class Param(
      id:        String,
      mandatory: Boolean
  )

  final case class Container(
      id:      String,
      version: Int,
      params:  Seq[Param]
  )

  implicit val codecParam:           JsonCodec[Param]     = DeriveJsonCodec.gen
  implicit val codecSimpleContainer: JsonCodec[Container] = DeriveJsonCodec.gen

  def main(args: Array[String]): Unit = {

    val c = Container("foo", 42, List(Param("p1", true)))

    println(c.toYaml().getOrElse(throw new RuntimeException("oups")))
  }
/*
  ** Result:

id: foo
version: 42
params:
  -
  id: p1
  mandatory: true

** Expected:

id: foo
version: 42
params:
  - id: p1
    mandatory: true

*/
}

This will be corrected by version including zio/zio-json#1004