(*) Upgrade to JDK21 with preview enabled.

... also move some common configuration into the root build.gradle-file.

Support for JDK21 in lombok is a bit sketchy at the moment, but it seems to work.  This upgrade is kind of important as the new index construction really benefits from Arena based lifecycle control over off-heap memory.

build.gradle

@@ -1,6 +1,8 @@
 plugins {
     id 'java'
     id("org.jetbrains.gradle.plugin.idea-ext") version "1.0"
+    id "io.freefair.lombok" version "8.3"
+    id "me.champeau.jmh" version "0.6.6"
 }
 
 group 'marginalia'
@@ -9,6 +11,30 @@ version 'SNAPSHOT'
 compileJava.options.encoding = "UTF-8"
 compileTestJava.options.encoding = "UTF-8"
 
+// Enable preview features for the entire project
+subprojects.forEach {it ->
+    it.tasks.withType(JavaCompile).configureEach {
+        options.compilerArgs += ['--enable-preview']
+    }
+    it.tasks.withType(Test).configureEach {
+        jvmArgs += ['--enable-preview']
+    }
+}
+
+allprojects {
+    apply plugin: 'java'
+    apply plugin: 'io.freefair.lombok'
+
+    dependencies {
+        implementation libs.lombok
+        testImplementation libs.lombok
+        annotationProcessor libs.lombok
+
+        lombok libs.lombok // prevent plugin from downgrading the version to something incompatible with '19
+    }
+
+}
+
 tasks.register('dist', Copy) {
     from subprojects.collect { it.tasks.withType(Tar) }
     into "$buildDir/dist"
@@ -61,6 +87,6 @@ idea {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }

code/api/assistant-api/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -16,8 +16,6 @@ dependencies {
     implementation project(':code:common:service-discovery')
     implementation project(':code:common:service-client')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/api/index-api/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -19,8 +19,6 @@ dependencies {
     implementation project(':code:libraries:message-queue')
     implementation project(':code:features-index:index-query')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/api/process-mqapi/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

code/api/search-api/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -18,8 +18,6 @@ dependencies {
     implementation project(':code:common:service-discovery')
     implementation project(':code:common:service-client')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/common/config/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

code/common/db/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
     id "org.flywaydb.flyway" version "8.2.0"
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -18,8 +18,6 @@ configurations {
 dependencies {
     implementation project(':code:common:model')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

code/common/linkdb/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -17,8 +17,6 @@ configurations {
 dependencies {
     implementation project(':code:common:model')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

code/common/model/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -16,8 +16,6 @@ dependencies {
     implementation project(':code:libraries:big-string')
     implementation project(':code:libraries:braille-block-punch-cards')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

code/common/process/build.gradle

@@ -1,19 +1,17 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation libs.notnull
-    implementation libs.lombok
-    annotationProcessor libs.lombok
 
     implementation libs.bundles.slf4j
     testImplementation libs.bundles.slf4j.test

code/common/renderer/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
@@ -8,12 +8,10 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.bundles.handlebars

code/common/service-client/build.gradle

@@ -1,22 +1,18 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
     id "de.undercouch.download" version "5.1.0"
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation project(':code:common:service-discovery')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.commons.lang3

code/common/service-discovery/build.gradle

@@ -10,7 +10,7 @@ repositories {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {

code/common/service/build.gradle

@@ -5,7 +5,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -15,9 +15,6 @@ dependencies {
     implementation project(':code:libraries:message-queue')
     implementation project(':code:common:db')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.spark
     implementation libs.guice
     implementation libs.rxjava

code/common/service/src/main/java/nu/marginalia/service/module/ConfigurationModule.java

@@ -24,7 +24,7 @@ public class ConfigurationModule extends AbstractModule {
 
         int basePort = descriptors.forId(id).port;
         int prometheusPort = basePort + 1000;
-        String host = Objects.requireNonNull(System.getProperty("service-host", "127.0.0.1"));
+        String host = System.getProperty("service-host", "127.0.0.1");
         var configObject = new ServiceConfiguration(id, 0, host, basePort, prometheusPort, UUID.randomUUID());
 
         bind(ServiceConfiguration.class).toInstance(configObject);

code/features-convert/adblock/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id "de.undercouch.download" version "5.1.0"
 
@@ -9,16 +9,13 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation project(':code:common:config')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.guice
     implementation libs.notnull

code/features-convert/keyword-extraction/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -17,8 +17,6 @@ dependencies {
     implementation project(':code:libraries:language-processing')
     implementation project(':code:libraries:term-frequency-dict')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/features-convert/pubdate/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id "de.undercouch.download" version "5.1.0"
 
@@ -9,16 +9,13 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation project(':code:common:model')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.guice
     implementation libs.notnull

code/features-convert/stackexchange-xml/build.gradle

@@ -1,18 +1,16 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation 'org.tukaani:xz:1.8'

code/features-convert/summary-extraction/build.gradle

@@ -1,18 +1,16 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/features-convert/topic-detection/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id "de.undercouch.download" version "5.1.0"
 
@@ -9,7 +9,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -18,9 +18,6 @@ dependencies {
     implementation project(':code:libraries:language-processing')
     implementation project(':third-party:porterstemmer')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.guice
     implementation libs.notnull

code/features-crawl/crawl-blocklist/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -17,8 +17,6 @@ dependencies {
     implementation project(':code:libraries:guarded-regex')
 
     implementation libs.notnull
-    implementation libs.lombok
-    annotationProcessor libs.lombok
 
     implementation libs.bundles.gson
     implementation libs.rxjava

code/features-crawl/link-parser/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -15,8 +15,6 @@ dependencies {
     implementation project(':code:common:model')
 
     implementation libs.notnull
-    implementation libs.lombok
-    annotationProcessor libs.lombok
 
     implementation libs.bundles.gson
     implementation libs.bundles.slf4j

code/features-index/domain-ranking/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id "de.undercouch.download" version "5.1.0"
 
@@ -9,7 +9,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -18,9 +18,6 @@ dependencies {
     implementation project(':code:common:model')
     implementation project(':code:common:service')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.bundles.mariadb
     implementation libs.guice

code/features-index/index-forward/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -21,8 +21,6 @@ dependencies {
 
     implementation project(':third-party:uppend')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/features-index/index-forward/src/main/java/nu/marginalia/index/forward/ForwardIndexConverter.java

@@ -92,8 +92,8 @@ public class ForwardIndexConverter {
             docFileData.force();
             docsFileId.force();
 
-            docFileData.advice(NativeIO.Advice.DontNeed);
-            docsFileId.advice(NativeIO.Advice.DontNeed);
+            docFileData.close();
+            docsFileId.close();
 
             progress.progress(TaskSteps.FINISHED);
         } catch (IOException ex) {

code/features-index/index-journal/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -14,8 +14,6 @@ dependencies {
     implementation project(':code:libraries:array')
     implementation project(':code:common:model')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/features-index/index-query/build.gradle

@@ -1,21 +1,19 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation project(':code:libraries:array')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/features-index/index-reverse/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -22,8 +22,6 @@ dependencies {
     implementation project(':code:common:process')
 
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.fastutil

code/features-search/query-parser/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -20,8 +20,6 @@ dependencies {
 
     implementation project(':third-party:porterstemmer')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.bundles.nlp
 

code/features-search/random-websites/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -16,8 +16,6 @@ dependencies {
     implementation project(':code:common:db')
     implementation project(':code:common:service')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

code/features-search/result-ranking/build.gradle

@@ -1,15 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
-
     id "de.undercouch.download" version "5.1.0"
-
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -18,9 +15,6 @@ dependencies {
     implementation project(':code:common:service')
     implementation project(':code:api:index-api')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.guice
     implementation libs.notnull

code/features-search/screenshots/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -15,8 +15,6 @@ dependencies {
     implementation project(':code:common:db')
     implementation project(':code:common:service')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/array/build.gradle

@@ -5,15 +5,13 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
     implementation project(':third-party:uppend')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull
@@ -27,6 +25,17 @@ dependencies {
     testImplementation libs.mockito
 }
 
+jmh {
+    jvmArgs = [ "--enable-preview" ]
+}
+tasks.withType(me.champeau.jmh.WithJavaToolchain).configureEach {
+    javaLauncher.set(javaToolchains.launcherFor {
+        languageVersion.set(JavaLanguageVersion.of(21))
+    })
+}
+tasks.withType(me.champeau.jmh.JmhBytecodeGeneratorTask).configureEach {
+    jvmArgs = ["--enable-preview"]
+}
 test {
     useJUnitPlatform()
 }

code/libraries/big-string/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/blocking-thread-pool/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/braille-block-punch-cards/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/btree/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -12,8 +12,6 @@ dependencies {
     implementation project(':code:libraries:array')
     implementation project(':code:libraries:next-prime')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     testImplementation libs.bundles.slf4j.test

code/libraries/easy-lsh/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     testImplementation libs.bundles.slf4j.test

code/libraries/guarded-regex/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/language-processing/build.gradle

@@ -1,13 +1,11 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
-
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -20,8 +18,6 @@ dependencies {
     implementation project(':code:libraries:easy-lsh')
     implementation project(':code:libraries:term-frequency-dict')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 

code/libraries/message-queue/build.gradle

@@ -5,14 +5,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.spark
     implementation libs.guice
     implementation libs.gson

code/libraries/next-prime/build.gradle

@@ -4,13 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/libraries/random-write-funnel/build.gradle

@@ -4,14 +4,11 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
 dependencies {
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     testImplementation libs.bundles.slf4j.test

code/libraries/term-frequency-dict/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -20,8 +20,6 @@ dependencies {
     implementation project(':code:libraries:easy-lsh')
     implementation project(':code:libraries:array')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 

code/process-models/crawl-spec/build.gradle

@@ -1,18 +1,16 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation project(':third-party:parquet-floor')

code/process-models/crawling-model/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -22,8 +22,6 @@ dependencies {
     implementation project(':code:common:service-client')
     implementation project(':code:libraries:language-processing')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/process-models/processed-data/build.gradle

@@ -1,18 +1,16 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation project(':third-party:parquet-floor')

code/process-models/work-log/build.gradle

@@ -1,18 +1,16 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/processes/converting-process/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -61,8 +61,6 @@ dependencies {
     testImplementation project(':code:libraries:term-frequency-dict')
     testImplementation project(':code:process-models:crawl-spec')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/processes/crawling-process/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -40,8 +40,6 @@ dependencies {
     implementation project(':code:features-crawl:crawl-blocklist')
     implementation project(':code:features-crawl:link-parser')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.notnull

code/processes/index-constructor-process/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -31,9 +31,6 @@ dependencies {
     implementation project(':code:features-index:index-journal')
     implementation project(':code:features-index:domain-ranking')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
-
     implementation libs.bundles.slf4j
     implementation libs.guice
     implementation libs.bundles.mariadb

code/processes/loading-process/build.gradle

@@ -1,12 +1,12 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -37,12 +37,8 @@ dependencies {
     implementation project(':code:process-models:crawling-model')
     implementation project(':code:process-models:processed-data')
     implementation project(':code:process-models:work-log')
-
     implementation project(':code:features-convert:keyword-extraction')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

code/processes/test-data/build.gradle

@@ -1,11 +1,11 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'jvm-test-suite'
 }
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

code/services-core/assistant-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
     id 'com.palantir.docker' version '0.35.0'
@@ -17,7 +17,7 @@ apply from: "$rootProject.projectDir/docker-service.gradle"
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -35,8 +35,6 @@ dependencies {
     implementation project(':code:libraries:language-processing')
     implementation project(':code:libraries:term-frequency-dict')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-core/control-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'com.palantir.docker' version '0.35.0'
     id 'jvm-test-suite'
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -39,8 +39,6 @@ dependencies {
     implementation project(':code:features-index:index-journal')
     implementation project(':code:process-models:crawl-spec')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-core/control-service/src/main/java/nu/marginalia/control/process/ProcessService.java

@@ -132,7 +132,7 @@ public class ProcessService {
         }
 
         opts.add(env2str("WMSA_HOME", WMSA_HOME));
-        opts.add(env2str("JAVA_OPTS", "")); // We explicitly empty this to avoid inheriting the parent process' JAVA_OPTS
+        opts.add(env2str("JAVA_OPTS", "--enable-preview")); //
 
         for (String envKey : propagatedEnvironmentVariables) {
             String envValue = System.getenv(envKey);

code/services-core/index-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'com.palantir.docker' version '0.35.0'
     id 'application'
     id 'jvm-test-suite'
@@ -17,7 +17,7 @@ apply from: "$rootProject.projectDir/docker-service.gradle"
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -38,12 +38,9 @@ dependencies {
     implementation project(':code:features-index:domain-ranking')
     implementation project(':code:features-search:result-ranking')
     implementation project(':third-party:commons-codec')
-
-
-    implementation libs.lombok
     testImplementation project(path: ':code:services-core:control-service')
     testImplementation project(':code:common:process')
-    annotationProcessor libs.lombok
+
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-core/search-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'com.palantir.docker' version '0.35.0'
     id 'application'
     id 'jvm-test-suite'
@@ -17,7 +17,7 @@ apply from: "$rootProject.projectDir/docker-service.gradle"
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -45,9 +45,6 @@ dependencies {
     implementation project(':code:features-search:query-parser')
     implementation project(':code:features-search:result-ranking')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-satellite/api-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'com.palantir.docker' version '0.35.0'
     id 'jvm-test-suite'
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -30,9 +30,6 @@ dependencies {
     implementation project(':code:common:service-client')
     implementation project(':code:api:search-api')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-satellite/dating-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'com.palantir.docker' version '0.35.0'
     id 'jvm-test-suite'
@@ -17,7 +17,7 @@ apply from: "$rootProject.projectDir/docker-service.gradle"
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -31,9 +31,6 @@ dependencies {
     implementation project(':code:features-search:random-websites')
     implementation project(':code:libraries:language-processing')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/services-satellite/explorer-service/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'com.palantir.docker' version '0.35.0'
     id 'jvm-test-suite'
@@ -17,7 +17,7 @@ apply from: "$rootProject.projectDir/docker-service.gradle"
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 dependencies {
@@ -29,9 +29,6 @@ dependencies {
 
     implementation project(':code:features-search:random-websites')
 
-
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.prometheus

code/tools/experiment-runner/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
 
     id 'jvm-test-suite'
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -37,8 +37,6 @@ dependencies {
     implementation project(':code:features-convert:topic-detection')
     implementation project(':code:features-convert:keyword-extraction')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 

code/tools/load-test/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
 
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -15,8 +15,6 @@ dependencies {
     implementation project(':code:common:config')
     implementation project(':code:common:model')
     implementation project(':code:libraries:term-frequency-dict')
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 }

code/tools/screenshot-capture-tool/build.gradle

@@ -1,13 +1,13 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -23,8 +23,6 @@ dependencies {
     implementation project(':code:features-search:screenshots')
     implementation project(':code:common:service')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.bundles.selenium
     implementation libs.bundles.mariadb

code/tools/stackexchange-converter/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
 
     id 'jvm-test-suite'
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -22,8 +22,6 @@ tasks.distZip.enabled = false
 dependencies {
     implementation project(':code:features-convert:stackexchange-xml')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 

code/tools/term-frequency-extractor/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
 
     id 'jvm-test-suite'
@@ -8,7 +8,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -32,8 +32,6 @@ dependencies {
     implementation project(':code:processes:converting-process')
     implementation project(':code:process-models:crawling-model')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
     implementation libs.notnull
 

code/tools/website-adjacencies-calculator/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id "io.freefair.lombok" version "8.2.2"
+
     id 'application'
     id 'jvm-test-suite'
 }
@@ -12,7 +12,7 @@ application {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -22,8 +22,6 @@ dependencies {
     implementation project(':code:common:process')
     implementation project(':code:common:service')
 
-    implementation libs.lombok
-    annotationProcessor libs.lombok
     implementation libs.bundles.slf4j
 
     implementation libs.guice

docker-service.gradle

@@ -1,7 +1,7 @@
 ext {
-    dockerImage='openjdk:20-slim'
-    serviceJvmOpts='-Dservice-host=0.0.0.0 -ea ${wmsa_jvm_param} -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=4000 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false'
-    serviceToolOpts='-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5000'
+    dockerImage='openjdk:21-slim'
+    serviceJvmOpts='--enable-preview -ea ${wmsa_jvm_param} -Dservice-host=0.0.0.0  -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=4000 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false'
+    serviceToolOpts='--enable-preview -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5000'
 }
 
 tasks.register('dockerFile') {

run/readme.md

@@ -12,7 +12,8 @@ or podman. These are a bit of a pain to install, but if you follow
 [this guide](https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository) 
 you're on the right track.
 
-The system requires JDK20+.
+The system requires JDK21+, and 
+uses preview features.
 
 ## Set up
 To go from a clean check out of the git repo to a running search engine,

settings.gradle

@@ -113,7 +113,7 @@ dependencyResolutionManagement {
 
     versionCatalogs {
         libs {
-            library('lombok', 'org.projectlombok', 'lombok').version('1.18.28')
+            library('lombok', 'org.projectlombok', 'lombok').version('1.18.30')
             library('mariadb-client', 'org.mariadb.jdbc', 'mariadb-java-client').version('3.0.6')
             library('hikaricp', 'com.zaxxer:HikariCP:5.0.1')
 
@@ -205,4 +205,5 @@ dependencyResolutionManagement {
 
 
     }
+
 }

third-party/commons-codec/build.gradle

@@ -5,7 +5,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/count-min-sketch/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/monkey-patch-gson/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/monkey-patch-opennlp/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/openzim/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/parquet-floor/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/porterstemmer/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/rdrpostagger/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/symspell/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/uppend/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 

third-party/xz/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(20))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }