Migrate build to shared convention plugins setup

Author: jjohannes

build.gradle.kts

@@ -1,42 +1,12 @@
-plugins {
-    id("groovy")
-    id("gradlexbuild.build-parameters")
-    id("gradlexbuild.documentation-conventions")
-    id("org.gradlex.internal.plugin-publish-conventions") version "0.6"
-}
-
-group = "org.gradlex"
 version = "1.4.5"
 
-java {
-    toolchain.languageVersion = JavaLanguageVersion.of(17)
-}
-
-tasks.withType<JavaCompile>().configureEach {
-    options.release = 8
-}
-
-dependencies.constraints {
-    checkstyle("com.google.guava:guava:33.5.0-jre") {
-        because("CVE-2023-2976, CVE-2020-8908")
-    }
-    checkstyle("commons-beanutils:commons-beanutils:1.11.0") {
-        because("CVE-2025-48734")
-    }
-    testSamplesImplementation("commons-io:commons-io:2.20.0") {
-        because("CVE-2024-47554, CVE-2021-29425")
+publishingConventions {
+    pluginPortal("${project.group}.${project.name}") {
+        implementationClass("org.gradlex.buildparameters.BuildParametersPlugin")
+        displayName("Build Parameters Gradle Plugin")
+        description("Compile-safe access to parameters supplied to a Gradle build.")
+        tags("gradlex", "parameters", "build parameters")
     }
-    testSamplesImplementation("org.apache.commons:commons-lang3:3.19.0") {
-        because("CVE-2025-48924")
-    }
-}
-
-pluginPublishConventions {
-    id("${project.group}.${project.name}")
-    implementationClass("org.gradlex.buildparameters.BuildParametersPlugin")
-    displayName("Build Parameters Gradle Plugin")
-    description("Compile-safe access to parameters supplied to a Gradle build.")
-    tags("gradlex", "parameters", "build parameters")
     gitHub("https://github.com/gradlex-org/build-parameters")
     website("https://gradlex.org/build-parameters")
     developer {
@@ -51,17 +21,8 @@ pluginPublishConventions {
     }
 }
 
-testing.suites.named<JvmTestSuite>("test") {
-    useJUnitJupiter()
-    dependencies {
-        implementation("org.spockframework:spock-core:2.3-groovy-4.0")
-    }
-    targets.all {
-        testTask { maxParallelForks = 4 }
-    }
-}
-
-tasks.publishPlugins {
-    dependsOn(tasks.check)
-}
+// === the following custom configuration should be removed once tests are migrated to Java
+apply(plugin = "groovy")
 
+dependencies { testImplementation("org.spockframework:spock-core:2.3-groovy-4.0") } //
+// ====================================================================================

gradle/checkstyle/checkstyle.xml

@@ -0,0 +1 @@
+toolchainVersion=17