Fix Gradle plugin publication

gradle.properties

@@ -1,6 +1,6 @@
 # Project Settings
 dokka_version_base=1.4.32
-dokka_publication_channels=bintray-kotlin-dev&space-dokka-dev
+dokka_publication_channels=maven-central-snapshot&space-dokka-dev
 dokka_integration_test_parallelism=2
 # Versions
 kotlin_version=1.4.32
@@ -13,4 +13,4 @@ language_version=1.4
 kotlin.code.style=official
 # Gradle settings
 org.gradle.jvmargs=-Xmx10g -XX:MaxMetaspaceSize=2g
-org.gradle.parallel=true
+org.gradle.parallel=true

runners/gradle-plugin/build.gradle.kts

@@ -44,7 +44,7 @@ gradlePlugin {
             description = "Dokka, the Kotlin documentation tool"
             implementationClass = "org.jetbrains.dokka.gradle.DokkaPlugin"
             version = dokkaVersion
-            isAutomatedPublishing = false // This will probably have to be fixed for Gradle Plugin Portal release
+            isAutomatedPublishing = true
         }
     }
 }
@@ -67,13 +67,21 @@ publishing {
             from(components["java"])
             version = "for-integration-tests-SNAPSHOT"
         }
+
+        register<MavenPublication>("pluginMaven") {
+            configurePom("Dokka ${project.name}")
+            artifactId = "dokka-gradle-plugin"
+        }
     }
 }
 
 tasks.withType<PublishToMavenRepository>().configureEach {
     onlyIf { publication != publishing.publications["dokkaGradlePluginForIntegrationTests"] }
 }
 
-registerDokkaArtifactPublication("dokkaGradleMavenPlugin") {
-    artifactId = "dokka-gradle-plugin"
+afterEvaluate { // Workaround for interesting design choice https://github.com/gradle/gradle/blob/c4f935f77377f1783f70ec05381c8182b3ade3ea/subprojects/plugin-development/src/main/java/org/gradle/plugin/devel/plugins/MavenPluginPublishPlugin.java#L49
+    configureBintrayPublicationIfNecessary("pluginMaven", "dokkaGradlePluginPluginMarkerMaven")
+    configureSpacePublicationIfNecessary("pluginMaven", "dokkaGradlePluginPluginMarkerMaven")
+    configureSonatypePublicationIfNecessary("pluginMaven", "dokkaGradlePluginPluginMarkerMaven")
+    createDokkaPublishTaskIfNecessary()
 }