Resolve metadata.yaml inputs eagerly to avoid implicit-dependency validation

Author: trask

instrumentation-docs/build.gradle.kts

@@ -21,7 +21,14 @@ tasks {
   test {
     // DeclarativeConfigValidationTest walks ../instrumentation for metadata.yaml files,
     // so changes to those files must invalidate this task's build cache entry.
-    inputs.files(fileTree(rootDir.resolve("instrumentation")) { include("**/metadata.yaml") })
+    // Eagerly resolve to a concrete file list (rather than passing a FileTree rooted at
+    // the instrumentation directory) to avoid Gradle's implicit-dependency validation
+    // flagging overlap with sibling subprojects' build/ output directories.
+    val metadataYamlFiles = fileTree(rootDir.resolve("instrumentation")) {
+      include("**/metadata.yaml")
+      exclude("**/build/**")
+    }.files
+    inputs.files(metadataYamlFiles)
       .withPropertyName("instrumentationMetadataYamlFiles")
       .withPathSensitivity(PathSensitivity.RELATIVE)
   }