Upgrade gradle + jdk

app/build.gradle.kts

@@ -16,7 +16,6 @@ dependencies {
 }
 
 application {
-    mainClassName = "scaffold.ScaffoldKt"
     mainClass.set("scaffold.ScaffoldKt")
     applicationName = "scaffold"
 }

buildSrc/build.gradle.kts

@@ -2,16 +2,12 @@ plugins {
     `kotlin-dsl`
 }
 
-kotlinDslPluginOptions {
-    experimentalWarning.set(false)
-}
-
 repositories {
     gradlePluginPortal()
 }
 
 dependencies {
-    implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.4.31"))
-    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.31")
-    implementation("com.github.jengelman.gradle.plugins:shadow:6.1.0")
+    implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.21"))
+    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.21")
+    implementation("com.github.johnrengelman:shadow:8.1.1")
 }

buildSrc/src/main/kotlin/java-convention.gradle.kts

@@ -7,8 +7,9 @@ repositories {
 }
 
 java {
-    targetCompatibility = JavaVersion.toVersion(11)
-    sourceCompatibility = JavaVersion.toVersion(11)
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(19))
+    }
 }
 
 tasks.withType<JavaCompile> {

buildSrc/src/main/kotlin/kotlin-convention.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
@@ -18,9 +20,10 @@ tasks.withType<Test> {
 }
 
 tasks.withType<KotlinCompile> {
-    kotlinOptions {
-        jvmTarget = "11"
-        javaParameters = true
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_19)
+        javaParameters.set(true)
+        languageVersion.set(KotlinVersion.KOTLIN_2_0)
     }
 }
 

gradle.properties

@@ -1,3 +1,3 @@
-org.gradle.jvmargs=-Xmx2048M -XX:MaxPermSize=512m -Dfile.encoding=UTF-8
+org.gradle.jvmargs=-Xmx2048M -Dfile.encoding=UTF-8
 org.gradle.caching=true
 org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists