LibGDX Gradle: Export .jar without packed resources

The desktop project's build.gradle file looks like the following...

apply plugin: "java"
sourceCompatibility = 1.8
sourceSets.main.java.srcDirs = [ "src/" ]
sourceSets.main.resources.srcDirs = [ "../core/assets" ]
project.ext.mainClassName = "com.rin.desktop.ClientLauncher"
project.ext.assetsDir = new File("../core/assets");
project.buildDir = '/Users/lukassongajlo/Dropbox/Elementar/Implementation/Test Versions/Client Version'
task run(dependsOn: classes, type: JavaExec) {
main = project.mainClassName
classpath = sourceSets.main.runtimeClasspath
standardInput = System.in
workingDir = project.assetsDir
ignoreExitValue = true
}
task debug(dependsOn: classes, type: JavaExec) {
main = project.mainClassName
classpath = sourceSets.main.runtimeClasspath
standardInput = System.in
workingDir = project.assetsDir
ignoreExitValue = true
debug = true
}
task dist(type: Jar) {
manifest {
attributes 'Main-Class': project.mainClassName
}
dependsOn configurations.runtimeClasspath
from {
configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
}
with jar
}
dist.dependsOn classes
eclipse {
project {
name = appName + "-desktop"
linkedResource name: 'assets', type: '2', location: 'PARENT-1-PROJECT_LOC/core/assets'
}
}
task afterEclipseImport(description: "Post processing after project generation", group: "IDE") {
doLast {
def classpath = new XmlParser().parse(file(".classpath"))
new Node(classpath, "classpathentry", [ kind: 'src', path: 'assets' ]);
def writer = new FileWriter(file(".classpath"))
def printer = new XmlNodePrinter(new PrintWriter(writer))
printer.setPreserveWhitespace(true)
printer.print(classpath)
}
}

... and after running gradlew desktop:dist I get the following folder structure...

[Question]: In libs is a standalone .jar (see picture below), so there is no need for the other resources. Is there a way to get only this .jar file without this whole folder structure? Big thanks in advance

These build directories are needed to create the jar file, so you can't go without them completely. But you shure can delete them after the build finished.

You can try like this:

// ...
// your 'dist' task stays untouched
task dist(type: Jar) {
manifest {
attributes 'Main-Class': project.mainClassName
}
dependsOn configurations.runtimeClasspath
from {
configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
}
with jar
}
task deleteUnusedBuildDirs(type: Delete) {
delete 'build/classes';
delete 'build/generated';
delete 'build/resources';
delete 'build/tmp';
}
dist.finalizedBy deleteUnusedBuildDirs
//...