Packaging Scala applications as GraalVM native images

Scala CLI lets you package your applications as native executables using GraalVM native images.

As an example, let's package the following application as a native executable using GraalVM native image:

Echo.scala

object Echo {
  def main(args: Array[String]): Unit =
    println(args.mkString(" "))
}

The following command packages this application as a native executable:

scala-cli package --native-image Echo.scala -o echo

# Run echo on macOS
./echo a b
# a b

You can pass custom options to GraalVM native image by passing them after --, like

scala-cli package --native-image Echo.scala -o echo -- --no-fallback