chore(deps): update dependency gradle to v9.0-milestone-6 (#951)

* chore(deps): update dependency gradle to v9.0-milestone-6

* fix Gradle 9 compatibility for test fixtures

* ktlint

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Gabriel Ittner <[email protected]>

Author: renovate[bot]

CHANGELOG.md

@@ -18,9 +18,10 @@
 - Kotlin Gradle Plugin 1.9.20
 
 #### Compatibility tested up to
-- JDK 23
-- Gradle 8.13
-- Android Gradle Plugin 8.9.0
+- JDK 24
+- Gradle 8.14
+- Gradle 9.0-milestone-6
+- Android Gradle Plugin 8.10.0
 - Android Gradle Plugin 8.10.0-alpha07
 - Kotlin Gradle Plugin 2.1.10
 - Kotlin Gradle Plugin 2.1.20-RC

gradle/alpha.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-gradle = "9.0-milestone-3"
+gradle = "9.0-milestone-6"
 
 kotlin = "2.2.0-Beta2"
 

plugin/src/integrationTest/kotlin/com/vanniktech/maven/publish/TestOptions.kt

@@ -56,8 +56,8 @@ enum class KotlinVersion(
   // latest versions of each type
   KOTLIN_STABLE(Versions.KOTLIN_STABLE, firstUnsupportedGradleVersion = GradleVersion.GRADLE_ALPHA),
   KOTLIN_RC(Versions.KOTLIN_RC, firstUnsupportedGradleVersion = GradleVersion.GRADLE_ALPHA),
-  KOTLIN_BETA(Versions.KOTLIN_BETA, firstUnsupportedGradleVersion = GradleVersion.GRADLE_ALPHA),
-  KOTLIN_ALPHA(Versions.KOTLIN_ALPHA, firstUnsupportedGradleVersion = GradleVersion.GRADLE_ALPHA),
+  KOTLIN_BETA(Versions.KOTLIN_BETA),
+  KOTLIN_ALPHA(Versions.KOTLIN_ALPHA),
 }
 
 enum class GradleVersion(

plugin/src/main/kotlin/com/vanniktech/maven/publish/Platform.kt

@@ -492,15 +492,21 @@ private fun setupTestFixtures(project: Project, sourcesJar: Boolean) {
       val extension = project.extensions.getByType(JavaPluginExtension::class.java)
       val testFixturesSourceSet = extension.sourceSets.maybeCreate(testFixtureSourceSetName)
 
+      val projectInternal = project as ProjectInternal
+      val projectDerivedCapability = if (GradleVersion.current() >= GradleVersion.version("9.0-milestone-6")) {
+        ProjectDerivedCapability::class.java.getConstructor(ProjectInternal::class.java, String::class.java)
+      } else {
+        ProjectDerivedCapability::class.java.getConstructor(Project::class.java, String::class.java)
+      }.newInstance(projectInternal, "testFixtures")
       val sourceElements = if (GradleVersion.current() >= GradleVersion.version("8.6-rc-1")) {
         JvmPluginsHelper.createDocumentationVariantWithArtifact(
           testFixturesSourceSet.sourcesElementsConfigurationName,
           testFixtureSourceSetName,
           DocsType.SOURCES,
-          setOf(ProjectDerivedCapability(project, "testFixtures")),
+          setOf(projectDerivedCapability),
           testFixturesSourceSet.sourcesJarTaskName,
           testFixturesSourceSet.allSource,
-          project as ProjectInternal,
+          projectInternal,
         )
       } else {
         JvmPluginsHelper::class.java.getMethod(
@@ -517,10 +523,10 @@ private fun setupTestFixtures(project: Project, sourcesJar: Boolean) {
           testFixturesSourceSet.sourcesElementsConfigurationName,
           testFixtureSourceSetName,
           DocsType.SOURCES,
-          listOf(ProjectDerivedCapability(project, "testFixtures")),
+          listOf(projectDerivedCapability),
           testFixturesSourceSet.sourcesJarTaskName,
           testFixturesSourceSet.allSource,
-          project as ProjectInternal,
+          projectInternal,
         ) as Configuration
       }