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Automatic derivation for recursive types is broken in Scala 3 #1980

@luksow

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@luksow

Hi,

#!/usr/bin/env scala-cli
using scala "3.1.2"

using lib "io.circe:circe-core_3:0.14.1"
using lib "io.circe:circe-parser_3:0.14.1"
using lib "io.circe:circe-generic_3:0.14.1"

import io.circe._
import io.circe.generic.auto._

case class R1(int: Int, r: Seq[R1])
case class R2(int: Int, r: Option[R2])

summon[Encoder[R1]]
summon[Encoder[R2]]

Both summons fail but with slightly different messages:

[error] ./circe.sc:14:20: cannot reduce summonFrom with
[error]  patterns :  case given encodeA @ _:io.circe.Encoder[Seq[circe.R1]]
[error]              case given evidence$1 @ _:deriving.Mirror.Of[Seq[circe.R1]]
[error] summon[Encoder[R1]]
[error]

and

[error] ./circe.sc:15:20: method derived is declared as `inline`, but was not inlined
[error] 
[error] Try increasing `-Xmax-inlines` above 32
[error] summon[Encoder[R2]]
[error]                    ^

Probably related to scala/scala3#8183

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