Problem with namespace clashes for generic wrapper classess | SchemaParseException: Can't redefine

[marcin-jozefowicz]

Hi!

I don't know if this is the right place to ask a question, but lets try!

I tried to introduce some kind of generic wrapper, it occurs that there is namespace clash based on error message. Or maybe how I can model it differently ? (this is minimal code I have plenty of other V types )

Question: Is there any workaround which will make this working.

import vulcan.Codec
import vulcan.Codec.OptionCodec
import vulcan.generic._
import java.util.UUID

sealed trait MaybeValue[V]

object MaybeValue {
  case class Cleared[V]() extends MaybeValue[V]

  case class Modified[V](newValue: V) extends MaybeValue[V]

  implicit def c[T](implicit x: Codec[T]): Codec[MaybeValue[T]] =
    Codec.derive[MaybeValue[T]]

}

case class TaskUpdateState(
    id: Option[MaybeValue[Long]],
    description: Option[MaybeValue[String]]
)
object TaskUpdateState {
  implicit val c: Codec[TaskUpdateState] = Codec.derive
}

val schemaValue = Codec[TaskUpdateState].schema

println(schemaValue)

Error output:

org.apache.avro.SchemaParseException: Can't redefine: Playground.MaybeValue.Modified
	at org.apache.avro.Schema$Names.put(Schema.java:1586)
	at org.apache.avro.Schema$NamedSchema.writeNameRef(Schema.java:844)
	at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:1011)
	at org.apache.avro.Schema$UnionSchema.toJson(Schema.java:1278)
	at org.apache.avro.Schema$RecordSchema.fieldsToJson(Schema.java:1039)
	at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:1023)
	at org.apache.avro.Schema.toString(Schema.java:433)
	at org.apache.avro.Schema.toString(Schema.java:405)
	at org.apache.avro.Schema.toString(Schema.java:396)
	at java.base/java.lang.String.valueOf(String.java:4216)
	at java.base/java.lang.StringBuilder.append(StringBuilder.java:173)
	at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1221)
	at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1216)
	at scala.collection.AbstractIterator.addString(Iterator.scala:1300)
	at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1166)
	at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1164)
	at scala.collection.AbstractIterator.mkString(Iterator.scala:1300)
	at scala.runtime.ScalaRunTime$._toString(ScalaRunTime.scala:156)
	at scala.util.Right.toString(Either.scala:471)
....	

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