Not compatible with ZIO 2.0-RC3

[francisdb]

Scala 3.1.1 with -Yexplicit-nulls
zio-opentelemetry 2.0.0-RC1

when upgrading from zio 2.0.0-RC2 to 2.0.0-RC3 we have the compiler throwing

java.lang.AssertionError: assertion failed while compiling /foobar/tests/src/main/scala/tracing.scala
[error] ## Exception when compiling 1 sources to /foobar/tests/target/scala-3.1.1/classes
[error] java.lang.AssertionError: assertion failed
[error] scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:11)
[error] dotty.tools.dotc.core.Types$MethodType.<init>(Types.scala:3697)
[error] dotty.tools.dotc.core.Types$CachedMethodType.<init>(Types.scala:3717)
[error] dotty.tools.dotc.core.Types$MethodTypeCompanion.apply(Types.scala:3788)
[error] dotty.tools.dotc.core.Types$MethodTypeCompanion.apply(Types.scala:3787)
[error] dotty.tools.dotc.core.Types$LambdaType.newLikeThis(Types.scala:3470)
[error] dotty.tools.dotc.core.Types$LambdaType.newLikeThis$(Types.scala:3403)
[error] dotty.tools.dotc.core.Types$MethodOrPoly.newLikeThis(Types.scala:3483)
...

Single file with single line

src/main/scala/tracing.scala

val y = zio.telemetry.opentelemetry.Tracing.live

build.sbt

scalaVersion := "3.1.1"

scalacOptions ++= Seq(
  "-unchecked",
  "-deprecation",
  "-feature",
  "-Yexplicit-nulls",
  "-source",
  "future"
)

libraryDependencies ++= Seq(
  "dev.zio" %% "zio"               % "2.0.0-RC3",
  "dev.zio" %% "zio-opentelemetry" % "2.0.0-RC1"
)

[adamgfraser]

Okay, so this is a situation where a dependency is not compiled against a compatible ZIO version so I think the expectation is that this is not going to compile and I don't think we can make any guarantees regarding what the compiler error message will be. If this error message is worse when you use automatic layer construction versus manual layer construction then perhaps there is something we can do in the layer construction macro but otherwise I think you just have to wait for compatible dependencies.

[francisdb]

There's a big difference between not compiling and the compiler throwing an AssertionError

[vladimir-lu]

I already started the work for bringing an RC3 compatible version in #509 - it's waiting on the zio-http module right now

[runtologist]

Thanks to the work of @vladimir-lu there is a brand new v2.0.0-RC2, which adds compatibility with ZIO 2.0.0-RC4 and all the goodness like getting rid of ZManaged and simplifying the Environment.

[francisdb]

Any idea when this will be available at https://repo1.maven.org/maven2/dev/zio/zio-opentelemetry_3/ ?

It's available, big thanks