Use AGP namespace attribute

sqldelight-gradle-plugin/src/main/kotlin/app/cash/sqldelight/gradle/android/PackageName.kt

@@ -2,29 +2,28 @@ package app.cash.sqldelight.gradle.android
 
 import app.cash.sqldelight.VERSION
 import com.android.build.gradle.BaseExtension
-import com.android.build.gradle.internal.manifest.parseManifest
-import com.android.builder.errors.EvalIssueException
-import com.android.builder.errors.IssueReporter
+import org.gradle.api.GradleException
 import org.gradle.api.Project
-import java.util.function.BooleanSupplier
 
 internal fun Project.packageName(): String {
   val androidExtension = extensions.getByType(BaseExtension::class.java)
-  androidExtension.sourceSets
-    .map { it.manifest.srcFile }
-    .filter { it.exists() }
-    .forEach {
-      return parseManifest(
-        file = it,
-        manifestFileRequired = true,
-        manifestParsingAllowed = BooleanSupplier { true },
-        issueReporter = object : IssueReporter() {
-          override fun hasIssue(type: Type) = false
-          override fun reportIssue(type: Type, severity: Severity, exception: EvalIssueException) = throw exception
-        }
-      ).packageName!!
-    }
-  throw IllegalStateException("No source sets available")
+  return androidExtension.namespace ?: throw GradleException(
+    """
+    |SqlDelight requires a package name to be set. This can be done via the android namespace:
+    |
+    |android {
+    |  namespace "com.example.mypackage"
+    |}
+    |
+    |or the sqldelight configuration:
+    |
+    |sqldelight {
+    |  MyDatabase {
+    |    packageName = "com.example.mypackage"
+    |  }
+    |}
+  """.trimMargin()
+  )
 }
 
 internal fun Project.sqliteVersion(): String? {

sqldelight-gradle-plugin/src/test/fulfilled-table-variant/build.gradle

@@ -13,6 +13,8 @@ repositories {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   lintOptions {

sqldelight-gradle-plugin/src/test/integration-android-variants/build.gradle

@@ -27,6 +27,8 @@ sqldelight {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   defaultConfig {

sqldelight-gradle-plugin/src/test/integration-android-variants/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="app.cash.sqldelight.integration">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
   <uses-sdk android:minSdkVersion="9"/>
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

sqldelight-gradle-plugin/src/test/integration-android/build.gradle

@@ -31,6 +31,8 @@ sqldelight {
 }
 
 android {
+  namespace "app.cash.sqldelight.integration"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   defaultConfig {

sqldelight-gradle-plugin/src/test/integration-android/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="app.cash.sqldelight.integration">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
   <uses-sdk android:minSdkVersion="9"/>
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

sqldelight-gradle-plugin/src/test/integration-multiplatform/android-build.gradle

@@ -15,6 +15,8 @@ repositories {
 }
 
 android {
+  namespace "app.cash.sqldelight.integration"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   defaultConfig {

sqldelight-gradle-plugin/src/test/integration-multiplatform/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="app.cash.sqldelight.integration">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
   <uses-sdk android:minSdkVersion="9"/>
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

sqldelight-gradle-plugin/src/test/library-project/build.gradle

@@ -13,6 +13,8 @@ repositories {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   lintOptions {

sqldelight-gradle-plugin/src/test/multi-module/AndroidProject/build.gradle

@@ -10,6 +10,8 @@ sqldelight {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   buildTypes {

sqldelight-gradle-plugin/src/test/multi-module/MultiplatformProject/build.gradle

@@ -9,6 +9,8 @@ sqldelight {
 }
 
 android {
+  namespace "app.cash.sqldelight.multiplatform.project"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   buildTypes {

sqldelight-gradle-plugin/src/test/properties-file-android/build.gradle

@@ -13,6 +13,8 @@ repositories {
 }
 
 android {
+  namespace "com.example"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   defaultConfig {

sqldelight-gradle-plugin/src/test/schema-file-android/build.gradle

@@ -13,6 +13,8 @@ repositories {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   lintOptions {

sqldelight-gradle-plugin/src/test/variants/build.gradle

@@ -15,6 +15,8 @@ repositories {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   lintOptions {

sqldelight-gradle-plugin/src/test/working-variants/build.gradle

@@ -14,6 +14,8 @@ repositories {
 }
 
 android {
+  namespace "com.example.sqldelight"
+
   compileSdkVersion deps.versions.compileSdk.get() as int
 
   defaultConfig {