doesn't work with scala 3 + scala-native

[scarf005]

tutorial referenced: https://typelevel.org/cats-effect/docs/core/scala-native

//> using dep "org.typelevel::cats-effect:3.5.4"
import cats.effect.{IO, IOApp}

object Main extends IOApp.Simple {
  def run: IO[Unit] = IO.println("Hello Cats Effect!")
}

$ time scala-cli --power package --native --native-mode release-full 2015/Test.scala
Compiling project (Scala 3.4.2, Scala Native 0.5.4)
Compiled project (Scala 3.4.2, Scala Native 0.5.4)
Picked up _JAVA_OPTIONS: -Djava.util.prefs.userRoot=/home/scarf/.config/java
[info] Linking (multithreadingEnabled=true, disable if not used) (1311 ms)
[info] Discovered 863 classes and 5277 methods after classloading
[error] Found 4 unreachable symbols!
[error] Unknown method cats.effect.IOApp.main(java.lang.String[]): scala.runtime.BoxedUnit, referenced from:
         method Main$.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5
  static method Main.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5


[error] Unknown method cats.effect.IOApp.$init$(): scala.runtime.BoxedUnit, referenced from:
    constructor Main$() at Test.scala:5
  static method Main.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5


[error] Unknown type cats.effect.IOApp, referenced from:
         method Main$.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5
  static method Main.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5


[error] Unknown type cats.effect.IOApp$Simple, referenced from:
           type Main$ at Test.scala:5
  static method Main.main(java.lang.String[]): scala.runtime.BoxedUnit at Test.scala:5


[info] Total (1456 ms)
Exception in thread "main" scala.scalanative.linker.LinkingException: Unreachable symbols found after classloading run. It can happen when using dependencies not cross-compiled for Scala Native or not yet ported JDK definitions.
        at scala.scalanative.build.ScalaNative$.$anonfun$withReachabilityPostprocessing$3(ScalaNative.scala:94)
        at scala.concurrent.Future.$anonfun$flatMap$1(Future.scala:307)
        at scala.concurrent.impl.Promise.$anonfun$transformWith$1(Promise.scala:51)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:74)
        at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
Error: scala.build.errors.ScalaNativeBuildError: Error compiling with Scala Native
For more details, please see '/home/scarf/repo/aoc-scala/2015/.scala-build/stacktraces/1723357516-2436857827086343636.log'

________________________________________________________
Executed in    2.66 secs    fish           external
   usr time    6.05 secs    0.00 millis    6.05 secs
   sys time    0.80 secs    1.24 millis    0.79 secs

System info

OS: ubuntu 22.04
scala-cli: 1.4.3
Scala version (default): 3.4.2

[lenguyenthanh]

CE only supports scala native 0.4.x for now. They have plan for it, but it'll take a while. You can see more context here: #4076

[scarf005]

thanks, but it still doesn't seem to work in 0.4.x:

//> using nativeVersion 0.4.17  
//> using scala 3.4.2
//> using dep "org.typelevel::cats-effect:3.5.4"
import cats.effect.{IO, IOApp}

object Main extends IOApp.Simple {
  def run: IO[Unit] = IO.println("Hello Cats Effect!")
}

time scala-cli --power package --native --native-mode release-full 2015/Test.scala
Picked up _JAVA_OPTIONS: -Djava.util.prefs.userRoot=/home/scarf/.config/java
[error] Found 4 missing definitions while linking
[error] Not found Top(cats.effect.IOApp)
[error]         at file:/home/scarf/repo/aoc-scala/2015/Test.scala:6
[error] Not found Member(Top(cats.effect.IOApp),D4mainLAL16java.lang.String_uEO)
[error]         at file:/home/scarf/repo/aoc-scala/2015/Test.scala:6
[error] Not found Member(Top(cats.effect.IOApp),D6$init$uEO)
[error]         at file:/home/scarf/repo/aoc-scala/2015/Test.scala:6
[error] Not found Top(cats.effect.IOApp$Simple)
Exception in thread "main" scala.scalanative.linker.LinkingException: Undefined definitions found in reachability phase
        at scala.scalanative.linker.Reach.fail(Reach.scala:979)
        at scala.scalanative.linker.Reach.reportMissing(Reach.scala:974)
        at scala.scalanative.linker.Reach.result(Reach.scala:52)
        at scala.scalanative.linker.Reach$.apply(Reach.scala:992)
        at scala.scalanative.linker.Link$.apply(Link.scala:13)
        at scala.scalanative.build.core.ScalaNative$.$anonfun$link$1(ScalaNative.scala:34)
        at scala.scalanative.build.Logger.time(Logger.scala:35)
        at scala.scalanative.build.Logger.time$(Logger.scala:32)
        at scala.scalanative.cli.utils.FilteredLogger.time(FilteredLogger.scala:7)
        at scala.scalanative.build.core.ScalaNative$.link(ScalaNative.scala:34)
        at scala.scalanative.build.Build$.$anonfun$build$1(Build.scala:73)
        at scala.scalanative.build.Logger.time(Logger.scala:35)
        at scala.scalanative.build.Logger.time$(Logger.scala:32)
        at scala.scalanative.cli.utils.FilteredLogger.time(FilteredLogger.scala:7)
        at scala.scalanative.build.Build$.build(Build.scala:61)
        at scala.scalanative.cli.ScalaNativeLd$.$anonfun$runLd$3(ScalaNativeLd.scala:73)
        at scala.scalanative.util.Scope$.apply(Scope.scala:32)
        at scala.scalanative.cli.ScalaNativeLd$.runLd(ScalaNativeLd.scala:72)
        at scala.scalanative.cli.ScalaNativeLd$.main(ScalaNativeLd.scala:42)
        at scala.scalanative.cli.ScalaNativeLd.main(ScalaNativeLd.scala)
Error: scala.build.errors.ScalaNativeBuildError: Error compiling with Scala Native
For more details, please see '/home/scarf/repo/aoc-scala/2015/.scala-build/stacktraces/1723359533-11119898221186217259.log'

1723359533-11119898221186217259.log

[armanbilge]

@scarf005 you are missing a colon.

https://youforgotapercentagesignoracolon.com/

[scarf005]

@scarf005 you are missing a colon.

https://youforgotapercentagesignoracolon.com/

thanks. but shouldn't this be documented in scala-cli docs page?

EDIT: adding colon still doesn't seem to work.

 scala-cli run  --native --native-mode release-full . --main-class day7.main
Downloading 10 dependencies
[error] ./project.scala:10:16
[error] Error downloading org.typelevel:cats-effect_native0.5_3:3.5.4
[error]   not found: /home/scarf/.cache/scalacli/local-repo/1.4.3/org.typelevel/cats-effect_native0.5_3/3.5.4/ivys/ivy.xml
[error]   No fallback URL found
[error]   not found: /home/scarf/.ivy2/local/org.typelevel/cats-effect_native0.5_3/3.5.4/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/org/typelevel/cats-effect_native0.5_3/3.5.4/cats-effect_native0.5_3-3.5.4.pom
[error] //> using dep "org.typelevel::cats-effect::3.5.4"
[error]                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[lenguyenthanh]

[error] Error downloading org.typelevel:cats-effect_native0.5_3:3.5.4
[error] not found: /home/scarf/.cache/scalacli/local-repo/1.4.3/org.typelevel/cats-effect_native0.5_3/3.5.4/ivys/ivy.xml

You now use native 0.5.3 again :p

[durban]

If I understand it correctly, every behavior have been explained, so I'm closing this. Feel free to reopen if there are still issues.