u/Saphira2002

Hello, I've been getting these errors while trying to make a fat jar with my scalafx project:

Deduplicate found different file contents in the following:
[error]   Jar name = javafx-base-16.jar, jar org = org.openjfx, entry target = module-info.class
[error]   Jar name = javafx-controls-16.jar, jar org = org.openjfx, entry target = module-info.class
[...]

Inside project/plugins.sbt, I have:

addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")

Scala version is 3.8.4, sbt version is 1.12.13.

This is the build.sbt content:

val scala3Version = "3.8.4"

lazy val app = (project in 
file
("."))
  .settings(
    
name 
:= "PPS-25-diceforge",
    
version 
:= "0.1.0-SNAPSHOT",

    
scalaVersion 
:= scala3Version,

    ThisBuild / 
mainClass 
:= Some("MainApp"),

    
libraryDependencies
++= {
      // Determine OS version of JavaFX binaries
      lazy val osName = System.
getProperty
("os.name") match {
        case n if n.startsWith("Linux") => "linux"
        case n if n.startsWith("Mac") => "mac"
        case n if n.startsWith("Windows") => "win"
        case _ => throw new Exception("Unknown platform!")
      }
      Seq("base", "controls", "fxml", "graphics", "media", "swing", "web")
        .map(m => "org.openjfx" % s"javafx-
$
m" % "16" classifier osName intransitive())
    },

    
libraryDependencies 
++={
      Seq(
        "org.scalatest" %% "scalatest" % "3.2.19" % 
Test
,
        "org.scalatestplus" %% "mockito-5-23" % "3.2.20.0" % "test",
        "org.scalafx" %% "scalafx" % "16.0.0-R24" intransitive()
      )
    },

    
scalacOptions 
++= Seq(
      "-Wconf:msg=Implicit parameters should be provided with a `using` clause:s",
      "-unchecked", "-deprecation",
    ),

    
resolvers 
+= 
Resolver
.sonatypeCentralSnapshots,
    
fork 
:= true
  )

I'm trying to set a merge strategy, but it does not let me access the assemblyMergeStrategy key, it says it does not exist. What did I do wrong? I tried looking up if it's a compatibility issue but the official scala website isn't working properly and won't let me click any of the entries.

Help please :,)