Actual result

Unlike what the documentation states (or my understanding of it at least :) ), using the Test scope does not prevent a java agent to be added to distributed scripts built with sbt-native-packager.

build.sbt:

lazy val root = (project in file("."))
  .enablePlugins(PlayScala)
  .enablePlugins(JavaAgent)
  .settings(
    javaAgents += "io.opentelemetry.javaagent" % "opentelemetry-javaagent" % "2.18.1",
    javaAgents += "org.mockito" % "mockito-core" % "5.18.0" % Test,
  )

Both agents are added in the start script:

...
addJava "-javaagent:${app_home}/../opentelemetry-javaagent/opentelemetry-javaagent-2.18.1.jar" 
addJava "-javaagent:${app_home}/../mockito-core/mockito-core-5.18.0.jar" 
...

And both JARs are copied in the distribution package as well.

Expected result

I expected to only have the OpenTelemetry agent. The Mockito one should not.

Other attempts

I also tried the following but the setting is reported as unused by sbt and indeed it has no effect:

Test / javaAgents += "org.mockito" % "mockito-core" % "5.18.0" % Test,

Other

This is quite important as Mockito should be used through its java agent starting Java 21 and it will be mandatory in Java 24+. And obviously, it doesn't make sense at production runtime to have it.

I can provide a minimal reproducible example if needed.