build: get rid of toolchains

.woodpecker.yml

@@ -3,7 +3,7 @@
 
 pipeline:
   export_metadata:
-    image: gradle:jdk19-jammy
+    image: gradle:jdk20-jammy
     pull: true
     commands:
       - mkdir public
@@ -15,20 +15,20 @@ pipeline:
     commands:
       - ./platform_jars.sh
   build_wrapper:
-    image: gradle:jdk19-jammy
+    image: gradle:jdk20-jammy
     commands:
       - gradle --build-cache :wrapper:build -Pflavor=windows -Ppublic -Ptimestamp=${CI_PIPELINE_STARTED}
       - cp wrapper/build/libs/*.exe public/wrapper.exe
       - cp wrapper/build/libs/*-all.jar public/wrapper.jar
   publish_debug:
-    image: gradle:jdk19-jammy
+    image: gradle:jdk20-jammy
     commands:
       - gradle --build-cache build publish -Pflavor=maven -Ppublic -Ptimestamp=${CI_PIPELINE_STARTED}
     secrets: [ maven_token, maven_name ]
     when:
       - branch: master
   publish_release:
-    image: gradle:jdk19-jammy
+    image: gradle:jdk20-jammy
     commands:
       - gradle --build-cache build publish -Pflavor=maven -Ppublic -Prelease
     secrets: [ maven_token, maven_name ]

buildSrc/src/main/kotlin/inceptum.java.gradle.kts

@@ -3,12 +3,6 @@ plugins {
     `maven-publish`
 }
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
-    }
-}
-
 repositories {
     mavenCentral()
     maven("https://maven.frohnmeyer-wds.de/artifacts")
@@ -42,7 +36,6 @@ afterEvaluate {
     if (hasProperty("offline")) {
         tasks.withType(JavaExec::class) {
             environment("G_ORIGINAL_EXECUTABLE", executable ?: "java")
-            //TODO once we are not using a toolchain, just do executable(rootDir.resolve("buildSrc/java-offline"))
             val originalMetadata = javaLauncher.get().metadata
             val field = org.gradle.api.internal.provider.AbstractProperty::class.java.getDeclaredField("value")
             field.isAccessible = true