For a long time, we have done a weird workaround to apply spotless on spotless itself, because gradle didn't support bootstrapping. Now it does, so we don't have to do that weird thing, which is good because it was also very slow.

Author: nedtwigg

build.gradle

@@ -11,8 +11,13 @@ plugins {
 	id 'org.jdrupes.mdoclet' version '1.0.5' apply false
 	// https://github.com/spotbugs/spotbugs/releases
 	id "com.github.spotbugs" version "2.0.0" apply false
+	// here
+	id 'com.diffplug.gradle.spotless' version '3.27.0'
 }
 
+// this is... not the canonical way to do spotless :)
+apply from: 'spotlessSelf.gradle'
+
 // root eclipse project
 apply plugin: 'com.diffplug.gradle.eclipse.resourcefilters'
 eclipseResourceFilters {

plugin-gradle/build.gradle

@@ -28,24 +28,19 @@ dependencies {
 
 tasks.eclipse.dependsOn(pluginUnderTestMetadata)
 
-/////////////////////
-// SPOTLESS (fake) //
-/////////////////////
-task spotlessCheck(type: JavaExec) {
-	classpath sourceSets.test.runtimeClasspath
-	main = 'com.diffplug.gradle.spotless.SelfTestCheck'
-}
-check.dependsOn(spotlessCheck)
-
-task spotlessApply(type: JavaExec) {
-	classpath sourceSets.test.runtimeClasspath
-	main = 'com.diffplug.gradle.spotless.SelfTestApply'
-}
 test { testLogging.showStandardStreams = true }
 
-test { useJUnit { excludeCategories 'com.diffplug.spotless.category.NpmTest' } }
+test {
+	useJUnit {
+		excludeCategories 'com.diffplug.spotless.category.NpmTest'
+	}
+}
 
-task npmTest(type: Test) { useJUnit { includeCategories 'com.diffplug.spotless.category.NpmTest' } }
+task npmTest(type: Test) {
+	useJUnit {
+		includeCategories 'com.diffplug.spotless.category.NpmTest'
+	}
+}
 
 //////////////////////////
 // GRADLE PLUGIN PORTAL //

spotlessSelf.gradle

@@ -1,16 +1,4 @@
-buildscript {
-	repositories {
-		jcenter()
-	}
-}
-
-// applied by SelfTest
-plugins {
-	id 'com.diffplug.gradle.spotless'
-	id 'java'
-}
-
-repositories { jcenter() }
+apply plugin: 'com.diffplug.gradle.spotless'
 spotless {
 	def noInternalDepsClosure = {
 		String text = it