Create `RootPlugin` to `configureGraphTasks()` on `subprojects`

build-logic/convention/build.gradle.kts

@@ -114,5 +114,9 @@ gradlePlugin {
             id = libs.plugins.nowinandroid.jvm.library.get().pluginId
             implementationClass = "JvmLibraryConventionPlugin"
         }
+        register("root") {
+            id = libs.plugins.nowinandroid.root.get().pluginId
+            implementationClass = "RootPlugin"
+        }
     }
 }

build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt

@@ -18,7 +18,6 @@ import com.android.build.api.dsl.ApplicationExtension
 import com.android.build.api.variant.ApplicationAndroidComponentsExtension
 import com.google.samples.apps.nowinandroid.configureBadgingTasks
 import com.google.samples.apps.nowinandroid.configureGradleManagedDevices
-import com.google.samples.apps.nowinandroid.configureGraphTasks
 import com.google.samples.apps.nowinandroid.configureKotlinAndroid
 import com.google.samples.apps.nowinandroid.configurePrintApksTask
 import org.gradle.api.Plugin
@@ -46,7 +45,6 @@ class AndroidApplicationConventionPlugin : Plugin<Project> {
                 configurePrintApksTask(this)
                 configureBadgingTasks(extensions.getByType<ApplicationExtension>(), this)
             }
-            configureGraphTasks()
         }
     }
 }

build-logic/convention/src/main/kotlin/AndroidLibraryConventionPlugin.kt

@@ -18,7 +18,6 @@ import com.android.build.api.dsl.LibraryExtension
 import com.android.build.api.variant.LibraryAndroidComponentsExtension
 import com.google.samples.apps.nowinandroid.configureFlavors
 import com.google.samples.apps.nowinandroid.configureGradleManagedDevices
-import com.google.samples.apps.nowinandroid.configureGraphTasks
 import com.google.samples.apps.nowinandroid.configureKotlinAndroid
 import com.google.samples.apps.nowinandroid.configurePrintApksTask
 import com.google.samples.apps.nowinandroid.disableUnnecessaryAndroidTests
@@ -60,7 +59,6 @@ class AndroidLibraryConventionPlugin : Plugin<Project> {
 
                 "implementation"(libs.findLibrary("androidx.tracing.ktx").get())
             }
-            configureGraphTasks()
         }
     }
 }

build-logic/convention/src/main/kotlin/AndroidTestConventionPlugin.kt

@@ -16,7 +16,6 @@
 
 import com.android.build.api.dsl.TestExtension
 import com.google.samples.apps.nowinandroid.configureGradleManagedDevices
-import com.google.samples.apps.nowinandroid.configureGraphTasks
 import com.google.samples.apps.nowinandroid.configureKotlinAndroid
 import org.gradle.api.Plugin
 import org.gradle.api.Project
@@ -34,7 +33,6 @@ class AndroidTestConventionPlugin : Plugin<Project> {
                 defaultConfig.targetSdk = 35
                 configureGradleManagedDevices(this)
             }
-            configureGraphTasks()
         }
     }
 }

build-logic/convention/src/main/kotlin/JvmLibraryConventionPlugin.kt

@@ -14,7 +14,6 @@
  *   limitations under the License.
  */
 
-import com.google.samples.apps.nowinandroid.configureGraphTasks
 import com.google.samples.apps.nowinandroid.configureKotlinJvm
 import com.google.samples.apps.nowinandroid.libs
 import org.gradle.api.Plugin
@@ -32,7 +31,6 @@ class JvmLibraryConventionPlugin : Plugin<Project> {
             dependencies {
                 "testImplementation"(libs.findLibrary("kotlin.test").get())
             }
-            configureGraphTasks()
         }
     }
 }

build-logic/convention/src/main/kotlin/RootPlugin.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed 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.
+ */
+
+import com.google.samples.apps.nowinandroid.configureGraphTasks
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+
+class RootPlugin : Plugin<Project> {
+    override fun apply(target: Project) {
+        require(target.path == ":")
+        target.subprojects { configureGraphTasks() }
+    }
+}

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/Graph.kt

@@ -120,7 +120,7 @@ internal enum class PluginType(val id: String, val ref: String, val style: Strin
     ),
 }
 
-fun Project.configureGraphTasks() {
+internal fun Project.configureGraphTasks() {
     val dumpTask = tasks.register<GraphDumpTask>("graphDump") {
         val graph = Graph(this@configureGraphTasks).invoke()
         projectPath = this@configureGraphTasks.path

build.gradle.kts

@@ -38,4 +38,5 @@ plugins {
     alias(libs.plugins.roborazzi) apply false
     alias(libs.plugins.google.osslicenses) apply false
     alias(libs.plugins.room) apply false
+    alias(libs.plugins.nowinandroid.root)
 }

gradle/libs.versions.toml

@@ -194,3 +194,4 @@ nowinandroid-android-room = { id = "nowinandroid.android.room" }
 nowinandroid-android-test = { id = "nowinandroid.android.test" }
 nowinandroid-hilt = { id = "nowinandroid.hilt" }
 nowinandroid-jvm-library = { id = "nowinandroid.jvm.library" }
+nowinandroid-root = { id = "nowinandroid.root" }