Switch to Kotlin and GradleX

.github/workflows/gradle.yml

@@ -31,7 +31,7 @@ jobs:
         java-version: '25'
         distribution: 'corretto'
     - uses: gradle/actions/setup-gradle@v4
-    - run: ./gradlew jlinkZip
+    - run: ./gradlew jpackage
     - name: Upload a Build Artifact
       uses: actions/upload-artifact@v4
       with:

build.gradle.kts

@@ -0,0 +1,111 @@
+plugins {
+    java
+    application
+    id("org.gradlex.extra-java-module-info") version "1.13.1"
+    id("org.gradlex.jvm-dependency-conflict-resolution") version "2.4"
+    id("org.gradlex.java-module-dependencies") version "1.10"
+    id("org.gradlex.java-module-packaging") version "1.1"
+}
+
+group = "org.jabreftest.test"
+
+// "1.0-SNAPSHOT" cannot be used; otherwise we get
+//   java.lang.IllegalArgumentException: Version [1.0-SNAPSHOT] contains invalid component [0-SNAPSHOT]
+// 0.1.0 cannaot be used; otherwise we get
+//   Bundler Mac Application Image skipped because of a configuration problem: The first number in an app-version cannot be zero or negative.
+version = "1.0.0"
+
+repositories {
+    mavenCentral()
+}
+
+val javafx = "25"
+val junitVersion = "5.13.4"
+
+java {
+  toolchain {
+    languageVersion.set(JavaLanguageVersion.of(25))
+  }
+}
+
+tasks.withType<JavaCompile>().configureEach {
+    options.encoding = "UTF-8"
+}
+
+application {
+    mainModule.set("javafx.reproducer")
+    mainClass.set("org.jabreftest.test.javafxreproducer.HelloApplication")
+}
+
+dependencies {
+    implementation("org.openjfx:javafx-controls:$javafx")
+    implementation("org.openjfx:javafx-fxml:$javafx")
+    testImplementation("org.junit.jupiter:junit-jupiter-api:$junitVersion")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:$junitVersion")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+jvmDependencyConflicts.patch {
+    listOf("base", "controls", "fxml", "graphics").forEach { jfxModule ->
+        module("org.openjfx:javafx-$jfxModule") {
+            addTargetPlatformVariant("", "none", "none") // matches the empty Jars: to get better errors
+            addTargetPlatformVariant("linux", OperatingSystemFamily.LINUX, MachineArchitecture.X86_64)
+            addTargetPlatformVariant("linux-aarch64", OperatingSystemFamily.LINUX, MachineArchitecture.ARM64)
+            addTargetPlatformVariant("mac", OperatingSystemFamily.MACOS, MachineArchitecture.X86_64)
+            addTargetPlatformVariant("mac-aarch64", OperatingSystemFamily.MACOS, MachineArchitecture.ARM64)
+            addTargetPlatformVariant("win", OperatingSystemFamily.WINDOWS, MachineArchitecture.X86_64)
+        }
+    }
+}
+
+extraJavaModuleInfo {
+    failOnAutomaticModules = true
+    failOnModifiedDerivedModuleNames = true
+    skipLocalJars = true
+}
+
+// Source: https://github.com/jjohannes/java-module-system/blob/main/gradle/plugins/src/main/kotlin/targets.gradle.kts
+// Configure variants for OS. Target name can be any string, but should match the name used in GitHub actions.
+javaModulePackaging {
+    // Configuration shared by all targets and applications
+    vendor = "JabRef"
+    jlinkOptions.addAll(
+        "--strip-debug", "--compress", "2", "--no-header-files", "--no-man-pages"
+        // "--ignore-signing-information",
+        // "--compress", "zip-6",
+        // "--no-header-files",
+        // "--no-man-pages",
+        // "--bind-services",
+    )
+
+    target("ubuntu-22.04") {
+        operatingSystem = OperatingSystemFamily.LINUX
+        architecture = MachineArchitecture.X86_64
+        packageTypes = listOf("app-image", "deb", "rpm")
+    }
+    target("ubuntu-22.04-arm") {
+        operatingSystem = OperatingSystemFamily.LINUX
+        architecture = MachineArchitecture.ARM64
+        packageTypes = listOf("app-image", "deb", "rpm")
+    }
+    target("macos-13") {
+        operatingSystem = OperatingSystemFamily.MACOS
+        architecture = MachineArchitecture.X86_64
+        packageTypes = listOf("app-image", "dmg", "pkg")
+        singleStepPackaging = true
+    }
+    target("macos-14") {
+        operatingSystem = OperatingSystemFamily.MACOS
+        architecture = MachineArchitecture.ARM64
+        packageTypes = listOf("app-image", "dmg", "pkg")
+        singleStepPackaging = true
+    }
+    target("windows-latest") {
+        operatingSystem = OperatingSystemFamily.WINDOWS
+        architecture = MachineArchitecture.X86_64
+        packageTypes = listOf("app-image", "msi")
+    }
+}

settings.gradle

@@ -1 +1,5 @@
-rootProject.name = "javafx-reproducer"
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+}
+
+rootProject.name = "javafx-reproducer"

src/main/java/module-info.java

@@ -1,4 +1,6 @@
-module org.jabreftest.test.javafxreproducer {
+// "Full name" cannot be used - otherwise, one gets following error message:
+//     Module name 'org.jabreftest.test.javafxreproducer' does not fit the project and source set names; expected name '<optional.prefix.>javafx.reproducer'.
+module javafx.reproducer {
     requires javafx.controls;
     requires javafx.fxml;