Add ephemeral iOS directory to put future generated files (#76830)

.gitignore

@@ -92,6 +92,7 @@ unlinked_spec.ds
 **/ios/Flutter/Flutter.framework
 **/ios/Flutter/Flutter.podspec
 **/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/

dev/benchmarks/complex_layout/ios/.gitignore

@@ -18,6 +18,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

dev/integration_tests/ios_app_with_extensions/ios/.gitignore

@@ -18,6 +18,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

dev/integration_tests/non_nullable/ios/.gitignore

@@ -18,6 +18,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

dev/integration_tests/release_smoke_test/.gitignore

@@ -60,6 +60,7 @@
 **/ios/Flutter/Flutter.framework
 **/ios/Flutter/Flutter.podspec
 **/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/

packages/flutter_tools/lib/src/build_system/targets/ios.dart

@@ -421,7 +421,7 @@ abstract class IosAssetBundle extends Target {
     // TODO(jonahwilliams): add plist to inputs
     final FlutterProject flutterProject = FlutterProject.fromDirectory(environment.projectDir);
     final Directory plistRoot = flutterProject.isModule
-      ? flutterProject.ios.ephemeralDirectory
+      ? flutterProject.ios.ephemeralModuleDirectory
       : environment.projectDir.childDirectory('ios');
     plistRoot
       .childDirectory('Flutter')

packages/flutter_tools/lib/src/commands/clean.dart

@@ -51,6 +51,7 @@ class CleanCommand extends FlutterCommand {
     deleteFile(flutterProject.android.ephemeralDirectory);
 
     deleteFile(flutterProject.ios.ephemeralDirectory);
+    deleteFile(flutterProject.ios.ephemeralModuleDirectory);
     deleteFile(flutterProject.ios.generatedXcodePropertiesFile);
     deleteFile(flutterProject.ios.generatedEnvironmentVariableExportScript);
     deleteFile(flutterProject.ios.deprecatedCompiledDartFramework);

packages/flutter_tools/lib/src/project.dart

@@ -428,7 +428,7 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
   static const String _productBundleIdVariable = r'$(PRODUCT_BUNDLE_IDENTIFIER)';
   static const String _hostAppProjectName = 'Runner';
 
-  Directory get ephemeralDirectory => parent.directory.childDirectory('.ios');
+  Directory get ephemeralModuleDirectory => parent.directory.childDirectory('.ios');
   Directory get _editableDirectory => parent.directory.childDirectory('ios');
 
   /// This parent folder of `Runner.xcodeproj`.
@@ -436,7 +436,7 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
     if (!isModule || _editableDirectory.existsSync()) {
       return _editableDirectory;
     }
-    return ephemeralDirectory;
+    return ephemeralModuleDirectory;
   }
 
   /// The root directory of the iOS wrapping of Flutter and plugins. This is the
@@ -445,7 +445,7 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
   ///
   /// This is the same as [hostAppRoot] except when the project is
   /// a Flutter module with an editable host app.
-  Directory get _flutterLibRoot => isModule ? ephemeralDirectory : _editableDirectory;
+  Directory get _flutterLibRoot => isModule ? ephemeralModuleDirectory : _editableDirectory;
 
   /// True, if the parent Flutter project is a module project.
   bool get isModule => parent.isModule;
@@ -453,6 +453,9 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
   /// Whether the flutter application has an iOS project.
   bool get exists => hostAppRoot.existsSync();
 
+  /// Put generated files here.
+  Directory get ephemeralDirectory => _flutterLibRoot.childDirectory('Flutter').childDirectory('ephemeral');
+
   @override
   File xcodeConfigFor(String mode) => _flutterLibRoot.childDirectory('Flutter').childFile('$mode.xcconfig');
 
@@ -664,29 +667,29 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
       return;
     }
     final bool pubspecChanged = globals.fsUtils.isOlderThanReference(
-      entity: ephemeralDirectory,
+      entity: ephemeralModuleDirectory,
       referenceFile: parent.pubspecFile,
     );
-    final bool toolingChanged = globals.cache.isOlderThanToolsStamp(ephemeralDirectory);
+    final bool toolingChanged = globals.cache.isOlderThanToolsStamp(ephemeralModuleDirectory);
     if (!pubspecChanged && !toolingChanged) {
       return;
     }
 
-    _deleteIfExistsSync(ephemeralDirectory);
+    _deleteIfExistsSync(ephemeralModuleDirectory);
     await _overwriteFromTemplate(
       globals.fs.path.join('module', 'ios', 'library'),
-      ephemeralDirectory,
+      ephemeralModuleDirectory,
     );
     // Add ephemeral host app, if a editable host app does not already exist.
     if (!_editableDirectory.existsSync()) {
       await _overwriteFromTemplate(
         globals.fs.path.join('module', 'ios', 'host_app_ephemeral'),
-        ephemeralDirectory,
+        ephemeralModuleDirectory,
       );
       if (hasPlugins(parent)) {
         await _overwriteFromTemplate(
           globals.fs.path.join('module', 'ios', 'host_app_ephemeral_cocoapods'),
-          ephemeralDirectory,
+          ephemeralModuleDirectory,
         );
       }
       // Use release mode so host project can link on bitcode variant.
@@ -759,7 +762,7 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
 
   Directory get engineCopyDirectory {
     return isModule
-        ? ephemeralDirectory.childDirectory('Flutter').childDirectory('engine')
+        ? ephemeralModuleDirectory.childDirectory('Flutter').childDirectory('engine')
         : hostAppRoot.childDirectory('Flutter');
   }
 

packages/flutter_tools/templates/app/ios.tmpl/.gitignore

@@ -18,6 +18,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral/
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

packages/flutter_tools/templates/package/.gitignore.tmpl

@@ -60,6 +60,7 @@ build/
 **/ios/Flutter/Flutter.framework
 **/ios/Flutter/Flutter.podspec
 **/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/

packages/flutter_tools/templates/plugin/ios.tmpl/.gitignore

@@ -34,4 +34,5 @@ Icon?
 .tags*
 
 /Flutter/Generated.xcconfig
+/Flutter/ephemeral/
 /Flutter/flutter_export_environment.sh
\ No newline at end of file

packages/flutter_tools/test/commands.shard/hermetic/clean_test.dart

@@ -53,6 +53,7 @@ void main() {
         projectUnderTest.android.ephemeralDirectory.createSync(recursive: true);
 
         projectUnderTest.ios.ephemeralDirectory.createSync(recursive: true);
+        projectUnderTest.ios.ephemeralModuleDirectory.createSync(recursive: true);
         projectUnderTest.ios.generatedXcodePropertiesFile.createSync(recursive: true);
         projectUnderTest.ios.generatedEnvironmentVariableExportScript.createSync(recursive: true);
         projectUnderTest.ios.deprecatedCompiledDartFramework.createSync(recursive: true);
@@ -77,6 +78,7 @@ void main() {
         expect(projectUnderTest.android.ephemeralDirectory.existsSync(), isFalse);
 
         expect(projectUnderTest.ios.ephemeralDirectory.existsSync(), isFalse);
+        expect(projectUnderTest.ios.ephemeralModuleDirectory.existsSync(), isFalse);
         expect(projectUnderTest.ios.generatedXcodePropertiesFile.existsSync(), isFalse);
         expect(projectUnderTest.ios.generatedEnvironmentVariableExportScript.existsSync(), isFalse);
         expect(projectUnderTest.ios.deprecatedCompiledDartFramework.existsSync(), isFalse);

packages/integration_test/example/ios/.gitignore

@@ -18,6 +18,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

packages/integration_test/ios/.gitignore

@@ -34,4 +34,5 @@ Icon?
 .tags*
 
 /Flutter/Generated.xcconfig
+/Flutter/ephemeral
 /Flutter/flutter_export_environment.sh
\ No newline at end of file