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我创建了简单的自己的类型: type MyEnv = ZEnv with Clock with MyRepository

并有Main方法:

object Main extends App {
  lazy val live: ZLayer[Any, Nothing, Has[MyRepository.Service]] = ZLayer.succeed(LiveMyRepository.repository)

  val routes = Router[AppTask](
    "/" -> MyRoutes.routes
  ).orNotFound

  val server: ZIO[MyEnv, Throwable, Unit] = ZIO.runtime[MyEnv]
    .flatMap {
      implicit rts =>
        BlazeServerBuilder[AppTask]
          .bindHttp(config.port, config.host)
          .withHttpApp(routes)
          .serve
          .compile
          .drain
    }

  def run(args: List[String]): ZIO[ZEnv, Nothing, Int] = {
    server.provideCustomLayer(live) foldM(
      err => putStrLn(s"Execution failed with: $err") *> IO.succeed(1),
      _ => IO.succeed(0))
  }

但是我在run方法中遇到了编译错误:

Error:(33, 30) Cannot prove that zio.ZEnv with zio.Has[my.repositories.MyRepository.Service] <:< my.application.Environment.MyEnv.
    server.provideCustomLayer(live) foldM(

我不知道如何解决它。我也有与隐式相关的错误server.provideCustomLayer(live)

No parameter found for implicits ev: ZEnv with Has[MyRepository.Service] <:< MyEnv

我试图找到一个解决方案,但是ZIO文档太没用了,其他地方也没有好的解决方案。

4

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