crash when .java-source only: Error: java.lang.RuntimeException: Expected Scala artifacts to be fetched

[bjornregnell]

Version(s)

$ scala-cli version
Scala CLI version: 1.0.4
Scala version (default): 3.3.0
$ javac -version
javac 17.0.8

Describe the bug

Scala CLI crashes when there is only .java-source but if a .scala-file is added then it works fine. If the .scala-file is removed then it crashes again.

java.lang.RuntimeException: Expected Scala artifacts to be fetched

See stack trace below.

To Reproduce

$ mkdir scala-cli-issue && cd scala-cli-issue

$ cat >Test.java
public class Test {
  public void hello() {
    System.out.println("Hello!");
  }
}

$ scala-cli repl .
Compiling project (Java)
Compiled project (Java)
Error: java.lang.RuntimeException: Expected Scala artifacts to be fetched
For more details, please see '/home/bjornr/tmp/scala-cli-issue/.scala-build/stacktraces/1695833159-3995895079627923036.log'

$ cat .scala-build/stacktraces/1695833159-3995895079627923036.log 
java.lang.RuntimeException: Expected Scala artifacts to be fetched
  scala.sys.package$.error(package.scala:27)
  scala.cli.commands.repl.Repl$.$anonfun$16(Repl.scala:288)
  scala.Option.getOrElse(Option.scala:201)
  scala.cli.commands.repl.Repl$.runRepl$$anonfun$1(Repl.scala:289)
  scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
  scala.cli.commands.repl.Repl$.runRepl(Repl.scala:453)
  scala.cli.commands.repl.Repl$.doRunRepl$1(Repl.scala:149)
  scala.cli.commands.repl.Repl$.doRunReplFromBuild$1(Repl.scala:170)
  scala.cli.commands.repl.Repl$.runCommand(Repl.scala:251)
  scala.cli.commands.repl.Repl$.runCommand(Repl.scala:104)
  scala.cli.commands.ScalaCommand.run(ScalaCommand.scala:364)
  scala.cli.commands.ScalaCommand.run(ScalaCommand.scala:348)
  caseapp.core.app.CaseApp.main(CaseApp.scala:150)
  scala.cli.commands.ScalaCommand.main(ScalaCommand.scala:333)
  caseapp.core.app.CommandsEntryPoint.main(CommandsEntryPoint.scala:120)
  scala.cli.ScalaCliCommands.main(ScalaCliCommands.scala:125)
  scala.cli.ScalaCli$.main0(ScalaCli.scala:245)
  scala.cli.ScalaCli$.main(ScalaCli.scala:108)
  scala.cli.ScalaCli.main(ScalaCli.scala)
$ cat > test.scala
val x = 42

$ scala-cli repl .
Compiling project (Scala 3.3.0, JVM)
Compiled project (Scala 3.3.0, JVM)
Welcome to Scala 3.3.0 (17.0.8, Java OpenJDK 64-Bit Server VM).
Type in expressions for evaluation. Or try :help.
                                                                                                                                            
scala> x
val res0: Int = 42
                                                                                                                                            
scala> Test()
val res1: Test = Test@3d53e876
                                                                                                                                            
scala> res1.hello
Hello!
                                                                                                                                            
scala> :q

$ rm test.scala 

$ scala-cli repl .
Compiling project (Java)
Compiled project (Java)
Error: java.lang.RuntimeException: Expected Scala artifacts to be fetched
For more details, please see '/home/bjornr/tmp/scala-cli-issue/.scala-build/stacktraces/1695833311-1908336239886349367.log'

Expected behaviour
Scala CLI should just work even if only .java in current dir.

[bjornregnell]

Many thanks for fixing this @trilleplay 🎉