[fix] Configuration cache for groovy (#2797)

Author: nedtwigg

plugin-gradle/CHANGES.md

@@ -7,6 +7,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 - Add a `expandWildcardImports` API for java ([#2679](https://github.com/diffplug/spotless/issues/2594))
 - Add the ability to specify a wildcard version (`*`) for external formatter executables. ([#2757](https://github.com/diffplug/spotless/issues/2757))
 ### Fixed
+- configuration cache for groovy. ([#2797](https://github.com/diffplug/spotless/pull/2797))
 - [fix] `NPE` due to workingTreeIterator being null for git ignored files. #911 ([#2771](https://github.com/diffplug/spotless/issues/2771))
 - Prevent race conditions when multiple npm-based formatters launch the server process simultaneously while sharing the same `node_modules` directory. ([#2786](https://github.com/diffplug/spotless/pull/2786))
 ### Changes

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/GroovyExtension.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2025 DiffPlug
+ * Copyright 2016-2026 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -60,12 +60,13 @@ protected void setupTask(SpotlessTask task) {
 			if (!getProject().getPlugins().hasPlugin(GroovyBasePlugin.class)) {
 				throw new GradleException(message);
 			}
+			final boolean excludeJavaValue = excludeJava;
 			target = getSources(getProject(),
 					message,
 					sourceSet -> sourceSet.getExtensions().getByType(GroovySourceDirectorySet.class),
 					file -> {
 						final String name = file.getName();
-						if (excludeJava) {
+						if (excludeJavaValue) {
 							return name.endsWith(".groovy");
 						} else {
 							return name.endsWith(".groovy") || name.endsWith(".java");

settings.gradle

@@ -60,7 +60,7 @@ develocity {
 		termsOfUseUrl = "https://gradle.com/terms-of-service"
 		termsOfUseAgree = "yes"
 		publishing {
-			onlyIf { providers.environmentVariable('CI').present }
+			onlyIf { getenv('CI') != null }
 		}
 	}
 }