Gradle 9.x support

Author: rpalcolea

.github/workflows/nebula.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         # test against latest update of some major Java version(s), as well as specific LTS version(s)
-        java: [8, 17, 21]
+        java: [17, 21]
     name: Gradle Build without Publish
     steps:
       - uses: actions/checkout@v4
@@ -35,7 +35,7 @@ jobs:
         with:
           distribution: 'zulu'
           java-version: |
-            8
+            17
             ${{ matrix.java }}
           java-package: jdk
       - uses: actions/cache@v4
@@ -75,7 +75,7 @@ jobs:
         with:
           distribution: 'zulu'
           java-version: |
-            8
+            17
             21
           java-package: jdk
       - uses: actions/cache@v4
@@ -120,7 +120,7 @@ jobs:
         with:
           distribution: 'zulu'
           java-version: |
-            8
+            17
             21
           java-package: jdk
       - uses: actions/cache@v4

.gitignore

@@ -6,3 +6,4 @@ out/
 *.iml
 *.ipr
 *.iws
+.kotlin/

build.gradle

@@ -16,9 +16,9 @@
 import org.gradle.util.GradleVersion
 
 plugins {
-    id 'com.netflix.nebula.plugin-plugin' version '21.2.2'
+    id 'com.netflix.nebula.plugin-plugin' version '22.0.2'
     id 'com.netflix.nebula.optional-base' version '9.0.0'
-    id "org.jetbrains.kotlin.jvm" version "2.1.0"
+    id "org.jetbrains.kotlin.jvm" version "2.2.0"
     id 'java-gradle-plugin'
 }
 
@@ -106,24 +106,6 @@ tasks.withType(Test).configureEach {
     }
 }
 
-java {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
-}
-
-idea {
-    project {
-        jdkName = '1.8'
-        languageLevel = '1.8'
-    }
-}
-
-tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-}
-
 tasks.withType(GenerateModuleMetadata).configureEach {
     suppressedValidationErrors.add('enforced-platform')
 }