jdaugherty commented on code in PR #15532:
URL: https://github.com/apache/grails-core/pull/15532#discussion_r2997142676


##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/GrailsAppBaseDirProvider.groovy:
##########
@@ -0,0 +1,53 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileStatic
+
+import org.gradle.api.tasks.Internal
+import org.gradle.process.CommandLineArgumentProvider
+
+import grails.util.BuildSettings
+
+/**
+ * Provides the {@code -Dgrails.build.base.dir} system property to forked JVM 
tasks.
+ *
+ * The directory is marked {@link Internal} rather than {@code 
@InputDirectory} because
+ * the project directory encompasses task output directories (e.g. {@code 
build/}).
+ * Declaring it as {@code @InputDirectory} causes Gradle to report implicit 
dependency
+ * violations between the consuming task (e.g. {@code test}) and every task 
that writes
+ * into the project directory (e.g. {@code compileIntegrationTestGroovy}, 
{@code jar}).
+ * The actual inputs that matter for caching (classpath, source sets) are 
already tracked
+ * by their respective tasks.
+ */
+@CompileStatic
+class GrailsAppBaseDirProvider implements CommandLineArgumentProvider {

Review Comment:
   I'd just like to say: this is genius.  I've been trying to figure out a way 
to fix this and I very much appreciate this solution.



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