missing jar for one sbt module

[yanns]

Expected behaviour

Given the build.sbt:

lazy val core = (project in file("modules/core"))
  .settings(
    name := "Reference Expansion Prototype",
  )

lazy val sphere = (project in file("modules/sphere"))
  .dependsOn(core)
  .settings(
    libraryDependencies += sphereJson
  )

lazy val root = (project in file("."))
  .aggregate(core, sphere)
  .dependsOn(core, sphere)
  .settings(
    name := "Reference Expansion Prototype"
  )
  .enablePlugins(JavaAppPackaging)

When I use stage, inside target/universal/stage/lib/, I can find the jar file for the root project, the jar file for the sphere project. But I cannot find any jar file for the core project.

This is very strange. I cannot find why.
A clean does not help.

Information

• sbt-native-packager 1.9.11
• sbt version 1.8.0
• build system: MacOS
• package: JavaAppPackaging
• target system: jar

[yanns]

I found the issue.
As the core and the root modules have the same name, they both produce the same jar file.