update/enforce minimum supported Gradle/AGP/KPG versions (#540)

* update/enforce minimum supported Gradle/AGP/KPG versions

* update checked version

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

@@ -26,10 +26,9 @@ enum class AgpVersion(
   val minJdkVersion: JavaVersion = JavaVersion.VERSION_11,
 ) {
   // minimum supported
-  AGP_7_1(
-    value = "7.1.2",
-    minGradleVersion = GradleVersion.GRADLE_7_2,
-    firstUnsupportedGradleVersion = GradleVersion.GRADLE_8_0,
+  AGP_7_3(
+    value = "7.3.1",
+    minGradleVersion = GradleVersion.GRADLE_7_4,
   ),
 
   // stable
@@ -40,44 +39,43 @@ enum class AgpVersion(
 
   // beta channel
   AGP_8_0(
-    value = "8.0.0-beta04",
+    value = "8.0.0-beta05",
     minGradleVersion = GradleVersion.GRADLE_8_0,
     minJdkVersion = JavaVersion.VERSION_17,
   ),
 
   // canary channel
   AGP_8_1(
-    value = "8.1.0-alpha07",
+    value = "8.1.0-alpha09",
     minGradleVersion = GradleVersion.GRADLE_8_0,
     minJdkVersion = JavaVersion.VERSION_17,
   ),
 }
 
 enum class KotlinVersion(val value: String) {
   // minimum supported
-  KT_1_7("1.7.20"),
+  KT_1_7("1.7.0"),
 
   // stable
   KT_1_8("1.8.10"),
 
   // preview
-  KT_1_8_BETA("1.8.20-Beta"),
+  KT_1_8_BETA("1.8.20-RC"),
 }
 
 enum class GradleVersion(val value: String) {
   // minimum supported
-  GRADLE_7_3("7.3"),
+  GRADLE_7_4("7.4"),
 
   // stable
   GRADLE_8_0("8.0.2"),
 
   // preview
-  GRADLE_8_1("8.1-20230302232219+0000"),
+  GRADLE_8_1("8.1-rc-1"),
   ;
 
   companion object {
     // aliases for the skipped version to be able to reference the correct one in AgpVersion
-    val GRADLE_7_2 = GRADLE_7_3
     val GRADLE_7_5 = GRADLE_8_0
     val GRADLE_7_6 = GRADLE_8_0
   }

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

@@ -8,34 +8,37 @@ import org.gradle.util.GradleVersion
 open class MavenPublishBasePlugin : Plugin<Project> {
 
   override fun apply(project: Project) {
-    if (GradleVersion.current() < MIN_GRADLE_VERSION) {
-      error("You need Gradle version $MIN_GRADLE_VERSION or higher, was ${GradleVersion.current()}")
-    }
-    project.plugins.withId("com.android.library") {
-      if (!project.hasWorkingNewAndroidPublishingApi()) {
-        error("You need AGP version 7.1.2, 7.2.0-beta02, 7.3.0-alpha01 or newer")
-      }
-    }
-
     project.plugins.apply(GradleMavenPublishPlugin::class.java)
 
     project.extensions.create("mavenPublishing", MavenPublishBaseExtension::class.java, project)
+
+    project.checkMinimumVersions()
   }
 
-  private fun Project.hasWorkingNewAndroidPublishingApi(): Boolean {
-    // All 7.3.0 builds starting from 7.3.0-alpha01 are fine.
-    if (isAtLeastUsingAndroidGradleVersionAlpha(7, 3, 0, 1)) {
-      return true
+  private fun Project.checkMinimumVersions() {
+    if (GradleVersion.current() < MIN_GRADLE_VERSION) {
+      error("You need Gradle version $MIN_GRADLE_VERSION or higher, was ${GradleVersion.current()}")
     }
-    // 7.2.0 is fine starting with beta 2
-    if (isAtLeastUsingAndroidGradleVersionAlpha(7, 2, 0, 1)) {
-      return isAtLeastUsingAndroidGradleVersionBeta(7, 2, 0, 2)
+    plugins.withId("com.android.library") {
+      if (!isAtLeastUsingAndroidGradleVersion(7, 3, 0)) {
+        error("You need AGP version 7.3.0 or newer")
+      }
+    }
+    KOTLIN_PLUGIN_IDS.forEach { pluginId ->
+      plugins.withId(pluginId) {
+        if (!isAtLeastKotlinVersion(pluginId, 1, 7, 0)) {
+          error("You need Kotlin version 1.7.0 or newer")
+        }
+      }
     }
-    // Earlier versions are fine starting with 7.1.2
-    return isAtLeastUsingAndroidGradleVersion(7, 1, 2)
   }
 
   private companion object {
-    val MIN_GRADLE_VERSION: GradleVersion = GradleVersion.version("7.3")
+    val MIN_GRADLE_VERSION: GradleVersion = GradleVersion.version("7.4")
+    val KOTLIN_PLUGIN_IDS = listOf(
+      "org.jetbrains.kotlin.jvm",
+      "org.jetbrains.kotlin.js",
+      "org.jetbrains.kotlin.multiplatform",
+    )
   }
 }

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

@@ -477,7 +477,7 @@ private fun setupTestFixtures(project: Project, sourcesJar: Boolean) {
       val action = Action<JvmVariantBuilder> {
         it.withSourcesJar().published()
       }
-      if (GradleVersion.current() >= GradleVersion.version("8.1-20230302232219+0000")) {
+      if (GradleVersion.current() >= GradleVersion.version("8.1-rc-1")) {
         val extension = project.extensions.getByType(JavaPluginExtension::class.java)
         val testFixturesSourceSet = extension.sourceSets.maybeCreate(variant)
         val method = services.javaClass.getMethod("createJvmVariant", String::class.java, SourceSet::class.java, Action::class.java)

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

@@ -58,21 +58,3 @@ internal fun Project.isAtLeastUsingAndroidGradleVersion(major: Int, minor: Int,
     false
   }
 }
-
-internal fun Project.isAtLeastUsingAndroidGradleVersionBeta(major: Int, minor: Int, patch: Int, beta: Int): Boolean {
-  return try {
-    androidComponents.pluginVersion >= AndroidPluginVersion(major, minor, patch).beta(beta)
-  } catch (e: NoClassDefFoundError) {
-    // was added in 7.0
-    false
-  }
-}
-
-internal fun Project.isAtLeastUsingAndroidGradleVersionAlpha(major: Int, minor: Int, patch: Int, alpha: Int): Boolean {
-  return try {
-    androidComponents.pluginVersion >= AndroidPluginVersion(major, minor, patch).alpha(alpha)
-  } catch (e: NoClassDefFoundError) {
-    // was added in 7.0
-    false
-  }
-}