cs does not install scala runner for scala 3

See https://github.com/lampepfl/dotty/issues/12811

Minimized example

Follow the official document Scala 3 Book, run the simple “Hello, world” example through scala3-repl.

In the file hello.scala, write

@main def hello = println("Hello, world!")

Then

scala3-compiler hello.scala
scala3-repl hello

The scala3-repl was installed through Coursier, as suggested by the official webpage Download Scala 3

Output

NO output.

The scala3-repl get into the interactive mode directly without any output.

Expectation

A runner for scala3 should be installed, e.g.

scala3 hello

should produce "Hello, world!" as output, the same as in Scala 2.

Even better would be if we could control which version is currently associated with the scala and scalac commands and that the work with either Scala 2 or Scala 3 depending on a version switch by some cs command. This way we don’t need different names of the runners, with an incosistent naming scheme (scala not scala2 or scala3).

[bjornregnell]

This is a showstopper for me to use cs in my teaching. And there is no .msi for Scala 3 so I’m more or less stuck (manually unpackaging a zip and going into environment variables to fiddle with path etc in Windows is not very attractive beginner programmer user experience…)

[sjrd]

Equivalent steps work on Windows as well 😃