Bump the version of sbt in the tutorial.

[blakehawkins]

No description provided.

[sjrd]

Scala 3 is supported. What made you think it wasn't?

[blakehawkins]

Hey! Thanks for looking

I got unresolved dependencies when I specify scala on 3.1.0, 3.1.1, 3.1.2, or 3.1.3:

[error] sbt.librarymanagement.ResolveException: Error downloading org.scala-lang:scala3-library_sjs1_3.1:3.1.0
[error]   Not found
[error]   Not found
[error]   not found: /home/blake/.ivy2/local/org.scala-lang/scala3-library_sjs1_3.1/3.1.0/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/org/scala-lang/scala3-library_sjs1_3.1/3.1.0/scala3-library_sjs1_3.1-3.1.0.pom
[error] Error downloading org.scala-lang:scala-library:3.1.0
[error]   Not found
[error]   Not found
[error]   not found: /home/blake/.ivy2/local/org.scala-lang/scala-library/3.1.0/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/org/scala-lang/scala-library/3.1.0/scala-library-3.1.0.pom
[error]         at lmcoursier.CoursierDependencyResolution.unresolvedWarningOrThrow(CoursierDependencyResolution.scala:246)
[error]         at lmcoursier.CoursierDependencyResolution.$anonfun$update$34(CoursierDependencyResolution.scala:215)
[error]         at scala.util.Either$LeftProjection.map(Either.scala:573)
[error]         at lmcoursier.CoursierDependencyResolution.update(CoursierDependencyResolution.scala:215)
[error]         at sbt.librarymanagement.DependencyResolution.update(DependencyResolution.scala:60)
[error]         at sbt.internal.LibraryManagement$.resolve$1(LibraryManagement.scala:52)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$12(LibraryManagement.scala:102)
[error]         at sbt.util.Tracked$.$anonfun$lastOutput$1(Tracked.scala:69)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$20(LibraryManagement.scala:115)
[error]         at scala.util.control.Exception$Catch.apply(Exception.scala:228)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11(LibraryManagement.scala:115)
[error]         at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11$adapted(LibraryManagement.scala:96)
[error]         at sbt.util.Tracked$.$anonfun$inputChanged$1(Tracked.scala:150)
[error]         at sbt.internal.LibraryManagement$.cachedUpdate(LibraryManagement.scala:129)
[error]         at sbt.Classpaths$.$anonfun$updateTask0$5(Defaults.scala:2947)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:67)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:281)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
[error]         at sbt.Execute.work(Execute.scala:290)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:281)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error]         at java.base/java.lang.Thread.run(Thread.java:833)

On latest 2.x this error goes away

[sjrd]

Ah, that's because the sbt version that's suggested there is ancient. With the latest 1.7.1, this should go much better.

[blakehawkins]

Thanks @sjrd that's done the trick!

Would it be helpful for me to update this PR to instead bump the recommended version of sbt, or will that then cause problems for lower versions of scala?

It would be nice to publish a matrix of supported versions for [scalajs, scala, sbt] IMO

[sjrd]

Would it be helpful for me to update this PR to instead bump the recommended version of sbt,

Yes, please. We can always bump the version of sbt. The newer versions of sbt always support the older versions of Scala.js and Scala; like the newer versions of Scala.js always support the older versions of Scala.