Create a project and use Scala 3 (SBT) #1287
Description
Expected
https://www.scala-lang.org/download/scala3.html
To create a new Scala 3 project, go to your terminal and run sbt new scala/scala3.g8.
After entering the name of your project (let's say MyProject), in your terminal go to the generated folder (for example myproject) and run the command sbt run.
You should be greeted with a friendly message.
Actually
$ sbt run
[info] welcome to sbt 1.4.5 (Gentoo Java 11.0.10)
[info] loading settings for project global-plugins from deps.sbt,scalafmt.sbt ...
[info] loading global plugins from /home/man/.sbt/1.0/plugins
[info] loading project definition from /home/man/projects/scala3-sample/project
[info] set current project to scala3-sample (in build file:/home/man/projects/scala3-sample/)
[error] java.lang.RuntimeException: No main class detected.
[error] at scala.sys.package$.error(package.scala:30)
[error] stack trace is suppressed; run last Compile / bgRun for the full output
[error] (Compile / bgRun) No main class detected.
[error] Total time: 0 s, completed Oct 27, 2021, 12:53:18 PM
Scala 2
The same issue with Scala 2 guide for SBT.