has the way to build a shadowJar changed since gra...

# gradle

[janvladimirmostert]

has the way to build a shadowJar changed since gradle 7.4 ?
I'm running gradle shadowJar, but only getting a jar with a Manifest in it

in my root build.gradle.kts, I have the shadow plugin

plugins {

   ...
   val shadowVersion = "7.1.2"

   kotlin("multiplatform").version(kotlinVersion).apply(false)
   kotlin("plugin.serialization").version(kotlinVersion).apply(false)
   id("com.github.johnrengelman.shadow").version(shadowVersion).apply(false)
}

and then in my module

plugins {
   application
   kotlin("plugin.serialization")
   kotlin("multiplatform")
   id("com.github.johnrengelman.shadow")
}

application {
	mainClass.set("com.blah.MyServer")
}

when running gradle shadowJar, I get a fatjar which only contains a manifest, nothing else, not even a class file, but when hitting run in IntelliJ, it runs perfectly fine.

my jvm files are under module/src/jvmMain/kotlin/com/blah/*.kt

what is the alternative to build fat jars?
I've tried the zipping approach, but it too is doing the same

tasks.named<Jar>("jar") {
   archiveFileName.set("foo.jar")
   manifest {
      attributes("Main-Class" to "com.blah.MyServer")
   }

   from(sourceSets.main.get().output)

   dependsOn(configurations.runtimeClasspath)
   from ({
      configurations.runtimeClasspath.get().map { if (it.isDirectory) it else zipTree(it) }
   })
}

[ephemient]

neither shadow nor application will work with kotlin.multiplatform out of the box

[ephemient]

related: https://youtrack.jetbrains.com/issue/KT-29273 https://youtrack.jetbrains.com/issue/KT-42683

[janvladimirmostert]

found a workaround, adding withJava in the jvm block makes multiplatform generate shadow jars again

jvm {
   compilations.all {
      kotlinOptions.jvmTarget = "17"
   }
   withJava()
}