Add Plugin-Versions plugin

build.gradle

@@ -53,7 +53,7 @@ allprojects {
         test.useJUnitPlatform()
 
         dependencies {
-            implementation platform("org.junit:junit-bom:5.9.2")
+            testImplementation platform("org.junit:junit-bom:5.9.2")
 
             testImplementation 'org.assertj:assertj-core:3.24.2'
             testImplementation 'org.junit.jupiter:junit-jupiter-api'

settings-plugin/build.gradle

@@ -0,0 +1,28 @@
+import io.freefair.gradle.plugins.build.ListPluginIds
+
+plugins {
+    id "java-gradle-plugin"
+    id "maven-publish"
+}
+
+gradlePlugin {
+    plugins {
+        pluginManagement {
+            id = "io.freefair.settings.plugin-versions"
+            implementationClass = "io.freefair.gradle.plugins.settings.PluginVersionsPlugin"
+            displayName = "FreeFair Plugin Version Management Plugin"
+            description = "Apply this to your settings.gradle to get default versions for all FreeFair Gradle Plugins"
+            tags.set(["plugin-management", "freefair"])
+        }
+    }
+}
+
+tasks.register("listPluginIds", ListPluginIds) {
+    outputFile = file("build/plugin-ids")
+}
+
+tasks.named("processResources", ProcessResources).configure {
+    into("META-INF/freefair") {
+        from(tasks.named("listPluginIds"))
+    }
+}

settings-plugin/src/main/java/io/freefair/gradle/plugins/settings/PluginVersionsPlugin.java

@@ -0,0 +1,32 @@
+package io.freefair.gradle.plugins.settings;
+
+import lombok.SneakyThrows;
+import lombok.extern.slf4j.Slf4j;
+import org.codehaus.groovy.runtime.ResourceGroovyMethods;
+import org.gradle.api.Plugin;
+import org.gradle.api.initialization.Settings;
+
+import java.net.URL;
+import java.util.List;
+
+@Slf4j
+public class PluginVersionsPlugin implements Plugin<Settings> {
+    @SneakyThrows
+    @Override
+    public void apply(Settings settings) {
+
+        String version = this.getClass().getPackage().getImplementationVersion();
+
+        URL resource = this.getClass().getClassLoader().getResource("META-INF/freefair/plugin-ids");
+
+        List<String> ids = ResourceGroovyMethods.readLines(resource);
+
+        settings.getPluginManagement().plugins(pds -> {
+            for (String id : ids) {
+                log.info("id '{}' version '{}'", id, version);
+                pds.id(id).version(version);
+            }
+        });
+
+    }
+}

settings.gradle

@@ -55,4 +55,6 @@ include "mkdocs-plugin"
 include "quicktype-plugin"
 include "plantuml-plugin"
 
+include "settings-plugin"
+
 include "gradle-plugin-platform"