flutter downgrade dependencies

mobile/apps/photos/README.md

@@ -46,25 +46,27 @@ You can alternatively install the build from PlayStore or F-Droid.
 
 ## 🧑‍💻 Building from source
 
-1. [Install Flutter v3.24.3](https://flutter.dev/docs/get-started/install).
+1. Install [Flutter v3.24.3](https://flutter.dev/docs/get-started/install) and [Rust v1.85.1](https://www.rust-lang.org/tools/install).
 
-2. Pull in all submodules with `git submodule update --init --recursive`
+2. Install [Flutter Rust Bridge](https://cjycode.com/flutter_rust_bridge/) with `cargo install flutter_rust_bridge_codegen`
 
-3. Enable repo git hooks `git config core.hooksPath hooks`
+3. Pull in all submodules with `git submodule update --init --recursive`
 
-4. If using Visual Studio Code, add the [Flutter
+4. Enable repo git hooks `git config core.hooksPath hooks`
+
+5. If using Visual Studio Code, add the [Flutter
    Intl](https://marketplace.visualstudio.com/items?itemName=localizely.flutter-intl)
    extension
 
-5. On Android:
+6. On Android:
 
-   * For development, run `flutter run -t lib/main.dart --flavor independent`
+   - For development, run `flutter run -t lib/main.dart --flavor independent`
 
-   * For building APK, [setup your
+   - For building APK, [setup your
      keystore](https://docs.flutter.dev/deployment/android#create-an-upload-keystore)
      and run `flutter build apk --release --flavor independent`
 
-6. For iOS, run `flutter build ios`
+7. For iOS, run `flutter build ios`
 
 Some common issues and troubleshooting tips are in [docs/dev](docs/dev.md).
 
@@ -88,11 +90,12 @@ issue](https://github.com/ente-io/ente/issues/new?title=Request+for+New+Language
 to have it added.
 
 ## Certificate Fingerprints
- 
+
 - **SHA1**: E1:60:10:18:B6:B0:2E:A3:74:6F:90:67:50:30:29:75:0E:EF:6D:39
 - **SHA256**: 35:ED:56:81:B7:0B:B3:BD:35:D9:0D:85:6A:F5:69:4C:50:4D:EF:46:AA:D8:3F:77:7B:1C:67:5C:F4:51:35:0B
 
 To verify these fingerprints, use the following command:
+
 ```bash
 apksigner verify --print-certs <path_to_apk>
 ```

mobile/apps/photos/android/app/build.gradle

@@ -31,7 +31,7 @@ if (keystorePropertiesFile.exists()) {
 android {
     namespace = "io.ente.photos"
     compileSdk = 35
-    ndkVersion = flutter.ndkVersion
+    ndkVersion = "28.0.13004108"
 
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_1_8

mobile/apps/photos/flutter_rust_bridge.yaml

@@ -0,0 +1,8 @@
+rust_input: crate::api
+rust_root: rust/
+dart_output: lib/src/rust
+
+dart_preamble: |
+  // ignore_for_file: require_trailing_commas
+
+web: false

mobile/apps/photos/integration_test/app_init_test.dart

@@ -91,10 +91,9 @@ Future<void> dismissUpdateAppDialog(WidgetTester tester) async {
   await tester.pumpAndSettle();
 }
 
-
 ///Use this widget as floating action buttom in HomeWidget so that frames
-///are built and rendered continuously so that timeline trace has continuous 
-///data. Change the duraiton in `_startTimer()` to control the duraiton of 
+///are built and rendered continuously so that timeline trace has continuous
+///data. Change the duraiton in `_startTimer()` to control the duraiton of
 ///test on app init.
 
 // class TempWidget extends StatefulWidget {
@@ -127,4 +126,4 @@ Future<void> dismissUpdateAppDialog(WidgetTester tester) async {
 //         ? const CircularProgressIndicator()
 //         : const SizedBox.shrink();
 //   }
-// }
+// }

mobile/apps/photos/integration_test/simple_test.dart

@@ -0,0 +1,13 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import "package:photos/src/rust/api/simple.dart";
+import 'package:photos/src/rust/frb_generated.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  setUpAll(() async => await RustLib.init());
+  testWidgets('Can call rust function', (WidgetTester tester) async {
+    final testString = greet(name: "Tom");
+    expect(testString.contains('Tom'), true);
+  });
+}

mobile/apps/photos/ios/Podfile.lock

@@ -288,6 +288,7 @@ DEPENDENCIES:
   - photo_manager (from `.symlinks/plugins/photo_manager/ios`)
   - privacy_screen (from `.symlinks/plugins/privacy_screen/ios`)
   - receive_sharing_intent (from `.symlinks/plugins/receive_sharing_intent/ios`)
+  - rust_lib_photos (from `.symlinks/plugins/rust_lib_photos/ios`)
   - sentry_flutter (from `.symlinks/plugins/sentry_flutter/ios`)
   - share_plus (from `.symlinks/plugins/share_plus/ios`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
@@ -415,6 +416,8 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/privacy_screen/ios"
   receive_sharing_intent:
     :path: ".symlinks/plugins/receive_sharing_intent/ios"
+  rust_lib_photos:
+    :path: ".symlinks/plugins/rust_lib_photos/ios"
   sentry_flutter:
     :path: ".symlinks/plugins/sentry_flutter/ios"
   share_plus:

mobile/apps/photos/ios/Runner.xcodeproj/project.pbxproj

@@ -566,6 +566,7 @@
 				"${BUILT_PRODUCTS_DIR}/photo_manager/photo_manager.framework",
 				"${BUILT_PRODUCTS_DIR}/privacy_screen/privacy_screen.framework",
 				"${BUILT_PRODUCTS_DIR}/receive_sharing_intent/receive_sharing_intent.framework",
+				"${BUILT_PRODUCTS_DIR}/rust_lib_photos/rust_lib_photos.framework",
 				"${BUILT_PRODUCTS_DIR}/sentry_flutter/sentry_flutter.framework",
 				"${BUILT_PRODUCTS_DIR}/share_plus/share_plus.framework",
 				"${BUILT_PRODUCTS_DIR}/shared_preferences_foundation/shared_preferences_foundation.framework",
@@ -662,6 +663,7 @@
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/photo_manager.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/privacy_screen.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/receive_sharing_intent.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/rust_lib_photos.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/sentry_flutter.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/share_plus.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/shared_preferences_foundation.framework",

mobile/apps/photos/lib/core/cache/image_cache.dart

@@ -1,4 +1,3 @@
-
 import "dart:io";
 
 import 'package:photos/core/cache/lru_map.dart';

mobile/apps/photos/lib/core/errors.dart

@@ -58,7 +58,7 @@ bool isHandledSyncError(Object errObj) {
 
 class LockAlreadyAcquiredError extends Error {}
 
-class LockFreedError extends Error{}
+class LockFreedError extends Error {}
 
 class UnauthorizedError extends Error {}
 

mobile/apps/photos/lib/db/ml/clip_vector_db.dart

@@ -0,0 +1,238 @@
+import "dart:typed_data" show Float32List;
+
+import "package:flutter_rust_bridge/flutter_rust_bridge.dart" show Uint64List;
+import "package:logging/logging.dart";
+import "package:path/path.dart";
+import "package:path_provider/path_provider.dart";
+import "package:photos/models/ml/vector.dart";
+import "package:photos/services/machine_learning/semantic_search/query_result.dart";
+import "package:photos/src/rust/api/usearch_api.dart";
+
+class ClipVectorDB {
+  static final Logger _logger = Logger("ClipVectorDB");
+
+  static const _databaseName = "ente.ml.vectordb.clip";
+
+  static final BigInt _embeddingDimension = BigInt.from(512);
+
+  static Logger get logger => _logger;
+
+  // Singleton pattern
+  ClipVectorDB._privateConstructor();
+  static final instance = ClipVectorDB._privateConstructor();
+  factory ClipVectorDB() => instance;
+
+  // only have a single app-wide reference to the database
+  static Future<VectorDb>? _vectorDbFuture;
+
+  Future<VectorDb> get _vectorDB async {
+    _vectorDbFuture ??= _initVectorDB();
+    return _vectorDbFuture!;
+  }
+
+  Future<VectorDb> _initVectorDB() async {
+    final documentsDirectory = await getApplicationDocumentsDirectory();
+    final String databaseDirectory =
+        join(documentsDirectory.path, _databaseName);
+    _logger.info("Opening vectorDB access: DB path " + databaseDirectory);
+    final vectorDB = VectorDb(
+      filePath: databaseDirectory,
+      dimensions: _embeddingDimension,
+    );
+    final stats = await getIndexStats(vectorDB);
+    _logger.info("VectorDB connection opened with stats: ${stats.toString()}");
+
+    return vectorDB;
+  }
+
+  Future<void> insertEmbedding({
+    required int fileID,
+    required List<double> embedding,
+  }) async {
+    final db = await _vectorDB;
+    try {
+      await db.addVector(key: BigInt.from(fileID), vector: embedding);
+    } catch (e, s) {
+      _logger.severe("Error inserting embedding", e, s);
+      rethrow;
+    }
+  }
+
+  Future<void> bulkInsertEmbeddings({
+    required List<int> fileIDs,
+    required List<Float32List> embeddings,
+  }) async {
+    final db = await _vectorDB;
+    final bigKeys = Uint64List.fromList(fileIDs);
+    try {
+      await db.bulkAddVectors(keys: bigKeys, vectors: embeddings);
+    } catch (e, s) {
+      _logger.severe("Error bulk inserting embeddings", e, s);
+      rethrow;
+    }
+  }
+
+  Future<List<EmbeddingVector>> getEmbeddings(List<int> fileIDs) async {
+    final db = await _vectorDB;
+    try {
+      final keys = Uint64List.fromList(fileIDs);
+      final vectors = await db.bulkGetVectors(keys: keys);
+      return List.generate(
+        vectors.length,
+        (index) => EmbeddingVector(
+          fileID: fileIDs[index],
+          embedding: vectors[index],
+        ),
+      );
+    } catch (e, s) {
+      _logger.severe("Error getting embeddings", e, s);
+      rethrow;
+    }
+  }
+
+  Future<void> deleteEmbeddings(List<int> fileIDs) async {
+    final db = await _vectorDB;
+    try {
+      final deletedCount =
+          await db.bulkRemoveVectors(keys: Uint64List.fromList(fileIDs));
+      _logger.info(
+        "Deleted $deletedCount embeddings, from ${fileIDs.length} keys",
+      );
+    } catch (e, s) {
+      _logger.severe("Error bulk deleting specific embeddings", e, s);
+      rethrow;
+    }
+  }
+
+  Future<void> deleteAllEmbeddings() async {
+    final db = await _vectorDB;
+    try {
+      await db.resetIndex();
+    } catch (e, s) {
+      _logger.severe("Error deleting all embeddings", e, s);
+      rethrow;
+    }
+  }
+
+  Future<void> deleteIndex() async {
+    final db = await _vectorDB;
+    try {
+      await db.deleteIndex();
+      _vectorDbFuture = null;
+    } catch (e, s) {
+      _logger.severe("Error deleting index", e, s);
+      rethrow;
+    }
+  }
+
+  Future<VectorDbStats> getIndexStats([VectorDb? db]) async {
+    db ??= await _vectorDB;
+    try {
+      final stats = await db.getIndexStats();
+      return VectorDbStats(
+        size: stats.$1.toInt(),
+        capacity: stats.$2.toInt(),
+        dimensions: stats.$3.toInt(),
+        fileSize: stats.$4.toInt(),
+        memoryUsage: stats.$5.toInt(),
+        expansionAdd: stats.$6.toInt(),
+        expansionSearch: stats.$7.toInt(),
+      );
+    } catch (e, s) {
+      _logger.severe("Error getting index stats", e, s);
+      rethrow;
+    }
+  }
+
+  Future<(Uint64List, Float32List)> searchClosestVectors(
+    List<double> query,
+    int count,
+  ) async {
+    final db = await _vectorDB;
+    try {
+      final result =
+          await db.searchVectors(query: query, count: BigInt.from(count));
+      return result;
+    } catch (e, s) {
+      _logger.severe("Error searching closest vectors", e, s);
+      rethrow;
+    }
+  }
+
+  Future<(BigInt, double)> searchClosestVector(
+    List<double> query,
+  ) async {
+    final db = await _vectorDB;
+    try {
+      final result = await db.searchVectors(query: query, count: BigInt.one);
+      return (result.$1[0], result.$2[0]);
+    } catch (e, s) {
+      _logger.severe("Error searching closest vector", e, s);
+      rethrow;
+    }
+  }
+
+  Future<Map<String, List<QueryResult>>> computeBulkSimilarities(
+    Map<String, List<double>> textQueryToEmbeddingMap,
+    Map<String, double> minimumSimilarityMap,
+  ) async {
+    try {
+      final queryToResults = <String, List<QueryResult>>{};
+      for (final MapEntry<String, List<double>> entry
+          in textQueryToEmbeddingMap.entries) {
+        final query = entry.key;
+        final minimumSimilarity = minimumSimilarityMap[query]!;
+        final textEmbedding = entry.value;
+        final (potentialFileIDs, distances) =
+            await searchClosestVectors(textEmbedding, 1000);
+        final queryResults = <QueryResult>[];
+        for (var i = 0; i < potentialFileIDs.length; i++) {
+          final similarity = 1 - distances[i];
+          if (similarity >= minimumSimilarity) {
+            queryResults
+                .add(QueryResult(potentialFileIDs[i].toInt(), similarity));
+          } else {
+            break;
+          }
+        }
+        queryToResults[query] = queryResults;
+      }
+      return queryToResults;
+    } catch (e, s) {
+      _logger.severe(
+        "Could not bulk find embeddings similarities using vector DB",
+        e,
+        s,
+      );
+      rethrow;
+    }
+  }
+}
+
+class VectorDbStats {
+  final int size;
+  final int capacity;
+  final int dimensions;
+
+  // in bytes
+  final int fileSize;
+  final int memoryUsage;
+
+  final int expansionAdd;
+  final int expansionSearch;
+
+  VectorDbStats({
+    required this.size,
+    required this.capacity,
+    required this.dimensions,
+    required this.fileSize,
+    required this.memoryUsage,
+    required this.expansionAdd,
+    required this.expansionSearch,
+  });
+
+  @override
+  String toString() {
+    return "VectorDbStats(size: $size, capacity: $capacity, dimensions: $dimensions, file size on disk (bytes): $fileSize, memory usage (bytes): $memoryUsage, expansionAdd: $expansionAdd, expansionSearch: $expansionSearch)";
+  }
+}

mobile/apps/photos/lib/db/ml/db.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import "dart:io" show File;
 import "dart:math";
 
 import "package:collection/collection.dart";
@@ -9,6 +10,7 @@ import 'package:path_provider/path_provider.dart';
 import "package:photos/core/event_bus.dart";
 import "package:photos/db/common/base.dart";
 import "package:photos/db/ml/base.dart";
+import "package:photos/db/ml/clip_vector_db.dart";
 import "package:photos/db/ml/db_model_mappers.dart";
 import 'package:photos/db/ml/schema.dart';
 import "package:photos/events/embedding_updated_event.dart";
@@ -18,6 +20,7 @@ import "package:photos/models/ml/face/face.dart";
 import "package:photos/models/ml/face/face_with_embedding.dart";
 import "package:photos/models/ml/ml_versions.dart";
 import "package:photos/models/ml/vector.dart";
+import "package:photos/service_locator.dart";
 import "package:photos/services/machine_learning/face_ml/face_clustering/face_db_info_for_clustering.dart";
 import 'package:photos/services/machine_learning/face_ml/face_filtering/face_filtering_constants.dart';
 import "package:photos/services/machine_learning/ml_result.dart";
@@ -84,6 +87,8 @@ class MLDataDB with SqlDbBase implements IMLDataDB<int> {
       "MLDataDB Migration took ${stopwatch.elapsedMilliseconds} ms",
     );
     stopwatch.stop();
+    _logger.info("Starting CLIP vector DB migration check unawaited");
+    if (flagService.enableVectorDb) unawaited(checkMigrateFillClipVectorDB());
 
     return asyncDBConnection;
   }
@@ -1249,6 +1254,121 @@ class MLDataDB with SqlDbBase implements IMLDataDB<int> {
     return embeddings;
   }
 
+  Future<void> checkMigrateFillClipVectorDB({bool force = false}) async {
+    _logger.info("Waiting for ClipVectorDB to be ready");
+    await Future.delayed(const Duration(milliseconds: 100));
+    _logger.info("Checking if ClipVectorDB migration is needed");
+
+    // Check if vector DB migration has run
+    _logger.info("Checking if ClipVectorDB migration has run");
+    final documentsDirectory = await getApplicationDocumentsDirectory();
+    final migrationFlagFile =
+        File(join(documentsDirectory.path, 'clip_vector_migration_done'));
+    if (await migrationFlagFile.exists() && !force) {
+      _logger.info("ClipVectorDB migration not needed, already done");
+      return;
+    }
+
+    // Get total count first to track progress
+    _logger.info("Getting total count of clip embeddings");
+    final db = await instance.asyncDB;
+    final countResult =
+        await db.getAll('SELECT COUNT($fileIDColumn) as total FROM $clipTable');
+    final totalCount = countResult.first['total'] as int;
+    if (totalCount == 0) {
+      _logger.info("No clip embeddings to migrate");
+      await migrationFlagFile.create();
+      return;
+    }
+    _logger.info("Total count of clip embeddings: $totalCount");
+
+    _logger.info("First time referencing ClipVectorDB in migration");
+    final clipVectorDB = ClipVectorDB.instance;
+    _logger.info("ClipVectorDB referenced");
+    await clipVectorDB.deleteAllEmbeddings();
+    _logger.info("ClipVectorDB all embeddings cleared");
+
+    _logger
+        .info("Starting migration of $totalCount clip embeddings to vector DB");
+    const batchSize = 1000;
+    int offset = 0;
+    int processedCount = 0;
+    int weirdCount = 0;
+    int whileCount = 0;
+    final stopwatch = Stopwatch()..start();
+    try {
+      while (true) {
+        whileCount++;
+        _logger.info("$whileCount st round of while loop");
+        // Allow some time for any GC to finish
+        await Future.delayed(const Duration(milliseconds: 100));
+
+        _logger.info("Reading $batchSize rows from DB");
+        final List<Map<String, dynamic>> results = await db.getAll('''
+        SELECT $fileIDColumn, $embeddingColumn 
+        FROM $clipTable
+        ORDER BY $fileIDColumn DESC
+        LIMIT $batchSize OFFSET $offset
+      ''');
+        _logger.info("Got ${results.length} results from DB");
+        if (results.isEmpty) {
+          _logger.info("No more results, breaking out of while loop");
+          break;
+        }
+        _logger.info("Processing ${results.length} results");
+        final List<int> fileIDs = [];
+        final List<Float32List> embeddings = [];
+        for (final result in results) {
+          final embedding =
+              Float32List.view((result[embeddingColumn] as Uint8List).buffer);
+          if (embedding.length == 512) {
+            fileIDs.add(result[fileIDColumn] as int);
+            embeddings.add(Float32List.view(result[embeddingColumn].buffer));
+          } else {
+            weirdCount++;
+          }
+        }
+        _logger.info(
+          "Got ${fileIDs.length} valid embeddings, $weirdCount weird embeddings",
+        );
+
+        await ClipVectorDB.instance
+            .bulkInsertEmbeddings(fileIDs: fileIDs, embeddings: embeddings);
+        _logger.info("Inserted ${fileIDs.length} embeddings to ClipVectorDB");
+        processedCount += fileIDs.length;
+        offset += batchSize;
+        _logger.info(
+          "migrated $processedCount/$totalCount embeddings to ClipVectorDB",
+        );
+        if (processedCount >= totalCount) {
+          _logger.info("All embeddings migrated, breaking out of while loop");
+          break;
+        }
+        _logger.info("Clearing out embeddings and fileIDs");
+        embeddings.clear();
+        fileIDs.clear();
+        results.clear();
+        // Allow some time for any GC to finish
+        _logger.info("Waiting for 100ms for GC to finish");
+        await Future.delayed(const Duration(milliseconds: 100));
+      }
+      _logger.info(
+        "migrated all $totalCount embeddings to ClipVectorDB in ${stopwatch.elapsed.inMilliseconds} ms, with $weirdCount weird embeddings not migrated",
+      );
+      await migrationFlagFile.create();
+      _logger.info("ClipVectorDB migration done, flag file created");
+    } catch (e) {
+      _logger.severe(
+        "Error migrating ClipVectorDB after ${stopwatch.elapsed.inMilliseconds} ms, clearing out DB again",
+        e,
+      );
+      await clipVectorDB.deleteAllEmbeddings();
+      rethrow;
+    } finally {
+      stopwatch.stop();
+    }
+  }
+
   // Get indexed FileIDs
   @override
   Future<Map<int, int>> clipIndexedFileWithVersion() async {
@@ -1282,12 +1402,25 @@ class MLDataDB with SqlDbBase implements IMLDataDB<int> {
         'INSERT OR REPLACE INTO $clipTable ($fileIDColumn, $embeddingColumn, $mlVersionColumn) VALUES (?, ?, ?)',
         _getRowFromEmbedding(embeddings.first),
       );
+      if (flagService.enableVectorDb) {
+        await ClipVectorDB.instance.insertEmbedding(
+          fileID: embeddings.first.fileID,
+          embedding: embeddings.first.embedding,
+        );
+      }
     } else {
       final inputs = embeddings.map((e) => _getRowFromEmbedding(e)).toList();
       await db.executeBatch(
         'INSERT OR REPLACE INTO $clipTable ($fileIDColumn, $embeddingColumn, $mlVersionColumn) values(?, ?, ?)',
         inputs,
       );
+      if (flagService.enableVectorDb) {
+        await ClipVectorDB.instance.bulkInsertEmbeddings(
+          fileIDs: embeddings.map((e) => e.fileID).toList(),
+          embeddings:
+              embeddings.map((e) => Float32List.fromList(e.embedding)).toList(),
+        );
+      }
     }
     Bus.instance.fire(EmbeddingUpdatedEvent());
   }
@@ -1298,6 +1431,9 @@ class MLDataDB with SqlDbBase implements IMLDataDB<int> {
     await db.execute(
       'DELETE FROM $clipTable WHERE $fileIDColumn IN (${fileIDs.join(", ")})',
     );
+    if (flagService.enableVectorDb) {
+      await ClipVectorDB.instance.deleteEmbeddings(fileIDs);
+    }
     Bus.instance.fire(EmbeddingUpdatedEvent());
   }
 
@@ -1305,6 +1441,9 @@ class MLDataDB with SqlDbBase implements IMLDataDB<int> {
   Future<void> deleteClipIndexes() async {
     final db = await instance.asyncDB;
     await db.execute('DELETE FROM $clipTable');
+    if (flagService.enableVectorDb) {
+      await ClipVectorDB.instance.deleteAllEmbeddings();
+    }
     Bus.instance.fire(EmbeddingUpdatedEvent());
   }
 

mobile/apps/photos/lib/generated/protos/ente/common/box.pb.dart

@@ -37,27 +37,32 @@ class CenterBox extends $pb.GeneratedMessage {
     return $result;
   }
   CenterBox._() : super();
-  factory CenterBox.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory CenterBox.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory CenterBox.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory CenterBox.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'CenterBox', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'), createEmptyInstance: create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'CenterBox',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'),
+      createEmptyInstance: create)
     ..a<$core.double>(1, _omitFieldNames ? '' : 'x', $pb.PbFieldType.OF)
     ..a<$core.double>(2, _omitFieldNames ? '' : 'y', $pb.PbFieldType.OF)
     ..a<$core.double>(3, _omitFieldNames ? '' : 'height', $pb.PbFieldType.OF)
     ..a<$core.double>(4, _omitFieldNames ? '' : 'width', $pb.PbFieldType.OF)
-    ..hasRequiredFields = false
-  ;
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   CenterBox clone() => CenterBox()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  CenterBox copyWith(void Function(CenterBox) updates) => super.copyWith((message) => updates(message as CenterBox)) as CenterBox;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  CenterBox copyWith(void Function(CenterBox) updates) =>
+      super.copyWith((message) => updates(message as CenterBox)) as CenterBox;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -66,13 +71,17 @@ class CenterBox extends $pb.GeneratedMessage {
   CenterBox createEmptyInstance() => create();
   static $pb.PbList<CenterBox> createRepeated() => $pb.PbList<CenterBox>();
   @$core.pragma('dart2js:noInline')
-  static CenterBox getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<CenterBox>(create);
+  static CenterBox getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<CenterBox>(create);
   static CenterBox? _defaultInstance;
 
   @$pb.TagNumber(1)
   $core.double get x => $_getN(0);
   @$pb.TagNumber(1)
-  set x($core.double v) { $_setFloat(0, v); }
+  set x($core.double v) {
+    $_setFloat(0, v);
+  }
+
   @$pb.TagNumber(1)
   $core.bool hasX() => $_has(0);
   @$pb.TagNumber(1)
@@ -81,7 +90,10 @@ class CenterBox extends $pb.GeneratedMessage {
   @$pb.TagNumber(2)
   $core.double get y => $_getN(1);
   @$pb.TagNumber(2)
-  set y($core.double v) { $_setFloat(1, v); }
+  set y($core.double v) {
+    $_setFloat(1, v);
+  }
+
   @$pb.TagNumber(2)
   $core.bool hasY() => $_has(1);
   @$pb.TagNumber(2)
@@ -90,7 +102,10 @@ class CenterBox extends $pb.GeneratedMessage {
   @$pb.TagNumber(3)
   $core.double get height => $_getN(2);
   @$pb.TagNumber(3)
-  set height($core.double v) { $_setFloat(2, v); }
+  set height($core.double v) {
+    $_setFloat(2, v);
+  }
+
   @$pb.TagNumber(3)
   $core.bool hasHeight() => $_has(2);
   @$pb.TagNumber(3)
@@ -99,13 +114,16 @@ class CenterBox extends $pb.GeneratedMessage {
   @$pb.TagNumber(4)
   $core.double get width => $_getN(3);
   @$pb.TagNumber(4)
-  set width($core.double v) { $_setFloat(3, v); }
+  set width($core.double v) {
+    $_setFloat(3, v);
+  }
+
   @$pb.TagNumber(4)
   $core.bool hasWidth() => $_has(3);
   @$pb.TagNumber(4)
   void clearWidth() => clearField(4);
 }
 
-
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
-const _omitMessageNames = $core.bool.fromEnvironment('protobuf.omit_message_names');
+const _omitMessageNames =
+    $core.bool.fromEnvironment('protobuf.omit_message_names');

mobile/apps/photos/lib/generated/protos/ente/common/box.pbenum.dart

@@ -8,4 +8,3 @@
 // ignore_for_file: constant_identifier_names, library_prefixes
 // ignore_for_file: non_constant_identifier_names, prefer_final_fields
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
-

mobile/apps/photos/lib/generated/protos/ente/common/box.pbjson.dart

@@ -35,4 +35,3 @@ final $typed_data.Uint8List centerBoxDescriptor = $convert.base64Decode(
     'CglDZW50ZXJCb3gSEQoBeBgBIAEoAkgAUgF4iAEBEhEKAXkYAiABKAJIAVIBeYgBARIbCgZoZW'
     'lnaHQYAyABKAJIAlIGaGVpZ2h0iAEBEhkKBXdpZHRoGAQgASgCSANSBXdpZHRoiAEBQgQKAl94'
     'QgQKAl95QgkKB19oZWlnaHRCCAoGX3dpZHRo');
-

mobile/apps/photos/lib/generated/protos/ente/common/box.pbserver.dart

@@ -11,4 +11,3 @@
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
 
 export 'box.pb.dart';
-

mobile/apps/photos/lib/generated/protos/ente/common/point.pb.dart

@@ -29,25 +29,30 @@ class EPoint extends $pb.GeneratedMessage {
     return $result;
   }
   EPoint._() : super();
-  factory EPoint.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory EPoint.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory EPoint.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory EPoint.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'EPoint', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'), createEmptyInstance: create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'EPoint',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'),
+      createEmptyInstance: create)
     ..a<$core.double>(1, _omitFieldNames ? '' : 'x', $pb.PbFieldType.OF)
     ..a<$core.double>(2, _omitFieldNames ? '' : 'y', $pb.PbFieldType.OF)
-    ..hasRequiredFields = false
-  ;
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   EPoint clone() => EPoint()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  EPoint copyWith(void Function(EPoint) updates) => super.copyWith((message) => updates(message as EPoint)) as EPoint;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  EPoint copyWith(void Function(EPoint) updates) =>
+      super.copyWith((message) => updates(message as EPoint)) as EPoint;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -56,13 +61,17 @@ class EPoint extends $pb.GeneratedMessage {
   EPoint createEmptyInstance() => create();
   static $pb.PbList<EPoint> createRepeated() => $pb.PbList<EPoint>();
   @$core.pragma('dart2js:noInline')
-  static EPoint getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EPoint>(create);
+  static EPoint getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EPoint>(create);
   static EPoint? _defaultInstance;
 
   @$pb.TagNumber(1)
   $core.double get x => $_getN(0);
   @$pb.TagNumber(1)
-  set x($core.double v) { $_setFloat(0, v); }
+  set x($core.double v) {
+    $_setFloat(0, v);
+  }
+
   @$pb.TagNumber(1)
   $core.bool hasX() => $_has(0);
   @$pb.TagNumber(1)
@@ -71,13 +80,16 @@ class EPoint extends $pb.GeneratedMessage {
   @$pb.TagNumber(2)
   $core.double get y => $_getN(1);
   @$pb.TagNumber(2)
-  set y($core.double v) { $_setFloat(1, v); }
+  set y($core.double v) {
+    $_setFloat(1, v);
+  }
+
   @$pb.TagNumber(2)
   $core.bool hasY() => $_has(1);
   @$pb.TagNumber(2)
   void clearY() => clearField(2);
 }
 
-
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
-const _omitMessageNames = $core.bool.fromEnvironment('protobuf.omit_message_names');
+const _omitMessageNames =
+    $core.bool.fromEnvironment('protobuf.omit_message_names');

mobile/apps/photos/lib/generated/protos/ente/common/point.pbenum.dart

@@ -8,4 +8,3 @@
 // ignore_for_file: constant_identifier_names, library_prefixes
 // ignore_for_file: non_constant_identifier_names, prefer_final_fields
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
-

mobile/apps/photos/lib/generated/protos/ente/common/point.pbjson.dart

@@ -30,4 +30,3 @@ const EPoint$json = {
 final $typed_data.Uint8List ePointDescriptor = $convert.base64Decode(
     'CgZFUG9pbnQSEQoBeBgBIAEoAkgAUgF4iAEBEhEKAXkYAiABKAJIAVIBeYgBAUIECgJfeEIECg'
     'JfeQ==');
-

mobile/apps/photos/lib/generated/protos/ente/common/point.pbserver.dart

@@ -11,4 +11,3 @@
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
 
 export 'point.pb.dart';
-

mobile/apps/photos/lib/generated/protos/ente/common/vector.pb.dart

@@ -26,24 +26,29 @@ class EVector extends $pb.GeneratedMessage {
     return $result;
   }
   EVector._() : super();
-  factory EVector.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory EVector.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory EVector.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory EVector.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'EVector', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'), createEmptyInstance: create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'EVector',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.common'),
+      createEmptyInstance: create)
     ..p<$core.double>(1, _omitFieldNames ? '' : 'values', $pb.PbFieldType.KD)
-    ..hasRequiredFields = false
-  ;
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   EVector clone() => EVector()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  EVector copyWith(void Function(EVector) updates) => super.copyWith((message) => updates(message as EVector)) as EVector;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  EVector copyWith(void Function(EVector) updates) =>
+      super.copyWith((message) => updates(message as EVector)) as EVector;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -52,13 +57,14 @@ class EVector extends $pb.GeneratedMessage {
   EVector createEmptyInstance() => create();
   static $pb.PbList<EVector> createRepeated() => $pb.PbList<EVector>();
   @$core.pragma('dart2js:noInline')
-  static EVector getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EVector>(create);
+  static EVector getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EVector>(create);
   static EVector? _defaultInstance;
 
   @$pb.TagNumber(1)
   $core.List<$core.double> get values => $_getList(0);
 }
 
-
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
-const _omitMessageNames = $core.bool.fromEnvironment('protobuf.omit_message_names');
+const _omitMessageNames =
+    $core.bool.fromEnvironment('protobuf.omit_message_names');

mobile/apps/photos/lib/generated/protos/ente/common/vector.pbenum.dart

@@ -8,4 +8,3 @@
 // ignore_for_file: constant_identifier_names, library_prefixes
 // ignore_for_file: non_constant_identifier_names, prefer_final_fields
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
-

mobile/apps/photos/lib/generated/protos/ente/common/vector.pbjson.dart

@@ -22,6 +22,5 @@ const EVector$json = {
 };
 
 /// Descriptor for `EVector`. Decode as a `google.protobuf.DescriptorProto`.
-final $typed_data.Uint8List eVectorDescriptor = $convert.base64Decode(
-    'CgdFVmVjdG9yEhYKBnZhbHVlcxgBIAMoAVIGdmFsdWVz');
-
+final $typed_data.Uint8List eVectorDescriptor =
+    $convert.base64Decode('CgdFVmVjdG9yEhYKBnZhbHVlcxgBIAMoAVIGdmFsdWVz');

mobile/apps/photos/lib/generated/protos/ente/common/vector.pbserver.dart

@@ -11,4 +11,3 @@
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
 
 export 'vector.pb.dart';
-

mobile/apps/photos/lib/generated/protos/ente/ml/face.pb.dart

@@ -31,25 +31,32 @@ class Detection extends $pb.GeneratedMessage {
     return $result;
   }
   Detection._() : super();
-  factory Detection.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory Detection.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory Detection.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory Detection.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'Detection', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'), createEmptyInstance: create)
-    ..aOM<$0.CenterBox>(1, _omitFieldNames ? '' : 'box', subBuilder: $0.CenterBox.create)
-    ..aOM<$1.EPoint>(2, _omitFieldNames ? '' : 'landmarks', subBuilder: $1.EPoint.create)
-    ..hasRequiredFields = false
-  ;
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'Detection',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'),
+      createEmptyInstance: create)
+    ..aOM<$0.CenterBox>(1, _omitFieldNames ? '' : 'box',
+        subBuilder: $0.CenterBox.create)
+    ..aOM<$1.EPoint>(2, _omitFieldNames ? '' : 'landmarks',
+        subBuilder: $1.EPoint.create)
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   Detection clone() => Detection()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  Detection copyWith(void Function(Detection) updates) => super.copyWith((message) => updates(message as Detection)) as Detection;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  Detection copyWith(void Function(Detection) updates) =>
+      super.copyWith((message) => updates(message as Detection)) as Detection;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -58,13 +65,17 @@ class Detection extends $pb.GeneratedMessage {
   Detection createEmptyInstance() => create();
   static $pb.PbList<Detection> createRepeated() => $pb.PbList<Detection>();
   @$core.pragma('dart2js:noInline')
-  static Detection getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<Detection>(create);
+  static Detection getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<Detection>(create);
   static Detection? _defaultInstance;
 
   @$pb.TagNumber(1)
   $0.CenterBox get box => $_getN(0);
   @$pb.TagNumber(1)
-  set box($0.CenterBox v) { setField(1, v); }
+  set box($0.CenterBox v) {
+    setField(1, v);
+  }
+
   @$pb.TagNumber(1)
   $core.bool hasBox() => $_has(0);
   @$pb.TagNumber(1)
@@ -75,7 +86,10 @@ class Detection extends $pb.GeneratedMessage {
   @$pb.TagNumber(2)
   $1.EPoint get landmarks => $_getN(1);
   @$pb.TagNumber(2)
-  set landmarks($1.EPoint v) { setField(2, v); }
+  set landmarks($1.EPoint v) {
+    setField(2, v);
+  }
+
   @$pb.TagNumber(2)
   $core.bool hasLandmarks() => $_has(1);
   @$pb.TagNumber(2)
@@ -103,26 +117,33 @@ class Face extends $pb.GeneratedMessage {
     return $result;
   }
   Face._() : super();
-  factory Face.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory Face.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory Face.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory Face.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'Face', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'), createEmptyInstance: create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'Face',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'),
+      createEmptyInstance: create)
     ..aOS(1, _omitFieldNames ? '' : 'id')
-    ..aOM<Detection>(2, _omitFieldNames ? '' : 'detection', subBuilder: Detection.create)
-    ..a<$core.double>(3, _omitFieldNames ? '' : 'confidence', $pb.PbFieldType.OF)
-    ..hasRequiredFields = false
-  ;
+    ..aOM<Detection>(2, _omitFieldNames ? '' : 'detection',
+        subBuilder: Detection.create)
+    ..a<$core.double>(
+        3, _omitFieldNames ? '' : 'confidence', $pb.PbFieldType.OF)
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   Face clone() => Face()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  Face copyWith(void Function(Face) updates) => super.copyWith((message) => updates(message as Face)) as Face;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  Face copyWith(void Function(Face) updates) =>
+      super.copyWith((message) => updates(message as Face)) as Face;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -131,13 +152,17 @@ class Face extends $pb.GeneratedMessage {
   Face createEmptyInstance() => create();
   static $pb.PbList<Face> createRepeated() => $pb.PbList<Face>();
   @$core.pragma('dart2js:noInline')
-  static Face getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<Face>(create);
+  static Face getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<Face>(create);
   static Face? _defaultInstance;
 
   @$pb.TagNumber(1)
   $core.String get id => $_getSZ(0);
   @$pb.TagNumber(1)
-  set id($core.String v) { $_setString(0, v); }
+  set id($core.String v) {
+    $_setString(0, v);
+  }
+
   @$pb.TagNumber(1)
   $core.bool hasId() => $_has(0);
   @$pb.TagNumber(1)
@@ -146,7 +171,10 @@ class Face extends $pb.GeneratedMessage {
   @$pb.TagNumber(2)
   Detection get detection => $_getN(1);
   @$pb.TagNumber(2)
-  set detection(Detection v) { setField(2, v); }
+  set detection(Detection v) {
+    setField(2, v);
+  }
+
   @$pb.TagNumber(2)
   $core.bool hasDetection() => $_has(1);
   @$pb.TagNumber(2)
@@ -157,13 +185,16 @@ class Face extends $pb.GeneratedMessage {
   @$pb.TagNumber(3)
   $core.double get confidence => $_getN(2);
   @$pb.TagNumber(3)
-  set confidence($core.double v) { $_setFloat(2, v); }
+  set confidence($core.double v) {
+    $_setFloat(2, v);
+  }
+
   @$pb.TagNumber(3)
   $core.bool hasConfidence() => $_has(2);
   @$pb.TagNumber(3)
   void clearConfidence() => clearField(3);
 }
 
-
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
-const _omitMessageNames = $core.bool.fromEnvironment('protobuf.omit_message_names');
+const _omitMessageNames =
+    $core.bool.fromEnvironment('protobuf.omit_message_names');

mobile/apps/photos/lib/generated/protos/ente/ml/face.pbenum.dart

@@ -8,4 +8,3 @@
 // ignore_for_file: constant_identifier_names, library_prefixes
 // ignore_for_file: non_constant_identifier_names, prefer_final_fields
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
-

mobile/apps/photos/lib/generated/protos/ente/ml/face.pbjson.dart

@@ -17,8 +17,26 @@ import 'dart:typed_data' as $typed_data;
 const Detection$json = {
   '1': 'Detection',
   '2': [
-    {'1': 'box', '3': 1, '4': 1, '5': 11, '6': '.ente.common.CenterBox', '9': 0, '10': 'box', '17': true},
-    {'1': 'landmarks', '3': 2, '4': 1, '5': 11, '6': '.ente.common.EPoint', '9': 1, '10': 'landmarks', '17': true},
+    {
+      '1': 'box',
+      '3': 1,
+      '4': 1,
+      '5': 11,
+      '6': '.ente.common.CenterBox',
+      '9': 0,
+      '10': 'box',
+      '17': true
+    },
+    {
+      '1': 'landmarks',
+      '3': 2,
+      '4': 1,
+      '5': 11,
+      '6': '.ente.common.EPoint',
+      '9': 1,
+      '10': 'landmarks',
+      '17': true
+    },
   ],
   '8': [
     {'1': '_box'},
@@ -37,8 +55,25 @@ const Face$json = {
   '1': 'Face',
   '2': [
     {'1': 'id', '3': 1, '4': 1, '5': 9, '9': 0, '10': 'id', '17': true},
-    {'1': 'detection', '3': 2, '4': 1, '5': 11, '6': '.ente.ml.Detection', '9': 1, '10': 'detection', '17': true},
-    {'1': 'confidence', '3': 3, '4': 1, '5': 2, '9': 2, '10': 'confidence', '17': true},
+    {
+      '1': 'detection',
+      '3': 2,
+      '4': 1,
+      '5': 11,
+      '6': '.ente.ml.Detection',
+      '9': 1,
+      '10': 'detection',
+      '17': true
+    },
+    {
+      '1': 'confidence',
+      '3': 3,
+      '4': 1,
+      '5': 2,
+      '9': 2,
+      '10': 'confidence',
+      '17': true
+    },
   ],
   '8': [
     {'1': '_id'},
@@ -52,4 +87,3 @@ final $typed_data.Uint8List faceDescriptor = $convert.base64Decode(
     'CgRGYWNlEhMKAmlkGAEgASgJSABSAmlkiAEBEjUKCWRldGVjdGlvbhgCIAEoCzISLmVudGUubW'
     'wuRGV0ZWN0aW9uSAFSCWRldGVjdGlvbogBARIjCgpjb25maWRlbmNlGAMgASgCSAJSCmNvbmZp'
     'ZGVuY2WIAQFCBQoDX2lkQgwKCl9kZXRlY3Rpb25CDQoLX2NvbmZpZGVuY2U=');
-

mobile/apps/photos/lib/generated/protos/ente/ml/face.pbserver.dart

@@ -11,4 +11,3 @@
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
 
 export 'face.pb.dart';
-

mobile/apps/photos/lib/generated/protos/ente/ml/fileml.pb.dart

@@ -31,25 +31,30 @@ class FileML extends $pb.GeneratedMessage {
     return $result;
   }
   FileML._() : super();
-  factory FileML.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory FileML.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory FileML.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory FileML.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'FileML', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'), createEmptyInstance: create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'FileML',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'),
+      createEmptyInstance: create)
     ..aInt64(1, _omitFieldNames ? '' : 'id')
     ..p<$core.double>(2, _omitFieldNames ? '' : 'clip', $pb.PbFieldType.KD)
-    ..hasRequiredFields = false
-  ;
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   FileML clone() => FileML()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  FileML copyWith(void Function(FileML) updates) => super.copyWith((message) => updates(message as FileML)) as FileML;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  FileML copyWith(void Function(FileML) updates) =>
+      super.copyWith((message) => updates(message as FileML)) as FileML;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -58,13 +63,17 @@ class FileML extends $pb.GeneratedMessage {
   FileML createEmptyInstance() => create();
   static $pb.PbList<FileML> createRepeated() => $pb.PbList<FileML>();
   @$core.pragma('dart2js:noInline')
-  static FileML getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<FileML>(create);
+  static FileML getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<FileML>(create);
   static FileML? _defaultInstance;
 
   @$pb.TagNumber(1)
   $fixnum.Int64 get id => $_getI64(0);
   @$pb.TagNumber(1)
-  set id($fixnum.Int64 v) { $_setInt64(0, v); }
+  set id($fixnum.Int64 v) {
+    $_setInt64(0, v);
+  }
+
   @$pb.TagNumber(1)
   $core.bool hasId() => $_has(0);
   @$pb.TagNumber(1)
@@ -101,28 +110,34 @@ class FileFaces extends $pb.GeneratedMessage {
     return $result;
   }
   FileFaces._() : super();
-  factory FileFaces.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory FileFaces.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
+  factory FileFaces.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory FileFaces.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
 
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(_omitMessageNames ? '' : 'FileFaces', package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'), createEmptyInstance: create)
-    ..pc<$2.Face>(1, _omitFieldNames ? '' : 'faces', $pb.PbFieldType.PM, subBuilder: $2.Face.create)
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'FileFaces',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'ente.ml'),
+      createEmptyInstance: create)
+    ..pc<$2.Face>(1, _omitFieldNames ? '' : 'faces', $pb.PbFieldType.PM,
+        subBuilder: $2.Face.create)
     ..a<$core.int>(2, _omitFieldNames ? '' : 'height', $pb.PbFieldType.O3)
     ..a<$core.int>(3, _omitFieldNames ? '' : 'width', $pb.PbFieldType.O3)
     ..a<$core.int>(4, _omitFieldNames ? '' : 'version', $pb.PbFieldType.O3)
     ..aOS(5, _omitFieldNames ? '' : 'error')
-    ..hasRequiredFields = false
-  ;
+    ..hasRequiredFields = false;
 
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
   FileFaces clone() => FileFaces()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  FileFaces copyWith(void Function(FileFaces) updates) => super.copyWith((message) => updates(message as FileFaces)) as FileFaces;
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  FileFaces copyWith(void Function(FileFaces) updates) =>
+      super.copyWith((message) => updates(message as FileFaces)) as FileFaces;
 
   $pb.BuilderInfo get info_ => _i;
 
@@ -131,7 +146,8 @@ class FileFaces extends $pb.GeneratedMessage {
   FileFaces createEmptyInstance() => create();
   static $pb.PbList<FileFaces> createRepeated() => $pb.PbList<FileFaces>();
   @$core.pragma('dart2js:noInline')
-  static FileFaces getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<FileFaces>(create);
+  static FileFaces getDefault() =>
+      _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<FileFaces>(create);
   static FileFaces? _defaultInstance;
 
   @$pb.TagNumber(1)
@@ -140,7 +156,10 @@ class FileFaces extends $pb.GeneratedMessage {
   @$pb.TagNumber(2)
   $core.int get height => $_getIZ(1);
   @$pb.TagNumber(2)
-  set height($core.int v) { $_setSignedInt32(1, v); }
+  set height($core.int v) {
+    $_setSignedInt32(1, v);
+  }
+
   @$pb.TagNumber(2)
   $core.bool hasHeight() => $_has(1);
   @$pb.TagNumber(2)
@@ -149,7 +168,10 @@ class FileFaces extends $pb.GeneratedMessage {
   @$pb.TagNumber(3)
   $core.int get width => $_getIZ(2);
   @$pb.TagNumber(3)
-  set width($core.int v) { $_setSignedInt32(2, v); }
+  set width($core.int v) {
+    $_setSignedInt32(2, v);
+  }
+
   @$pb.TagNumber(3)
   $core.bool hasWidth() => $_has(2);
   @$pb.TagNumber(3)
@@ -158,7 +180,10 @@ class FileFaces extends $pb.GeneratedMessage {
   @$pb.TagNumber(4)
   $core.int get version => $_getIZ(3);
   @$pb.TagNumber(4)
-  set version($core.int v) { $_setSignedInt32(3, v); }
+  set version($core.int v) {
+    $_setSignedInt32(3, v);
+  }
+
   @$pb.TagNumber(4)
   $core.bool hasVersion() => $_has(3);
   @$pb.TagNumber(4)
@@ -167,13 +192,16 @@ class FileFaces extends $pb.GeneratedMessage {
   @$pb.TagNumber(5)
   $core.String get error => $_getSZ(4);
   @$pb.TagNumber(5)
-  set error($core.String v) { $_setString(4, v); }
+  set error($core.String v) {
+    $_setString(4, v);
+  }
+
   @$pb.TagNumber(5)
   $core.bool hasError() => $_has(4);
   @$pb.TagNumber(5)
   void clearError() => clearField(5);
 }
 
-
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
-const _omitMessageNames = $core.bool.fromEnvironment('protobuf.omit_message_names');
+const _omitMessageNames =
+    $core.bool.fromEnvironment('protobuf.omit_message_names');

mobile/apps/photos/lib/generated/protos/ente/ml/fileml.pbenum.dart

@@ -8,4 +8,3 @@
 // ignore_for_file: constant_identifier_names, library_prefixes
 // ignore_for_file: non_constant_identifier_names, prefer_final_fields
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
-

mobile/apps/photos/lib/generated/protos/ente/ml/fileml.pbjson.dart

@@ -34,10 +34,25 @@ final $typed_data.Uint8List fileMLDescriptor = $convert.base64Decode(
 const FileFaces$json = {
   '1': 'FileFaces',
   '2': [
-    {'1': 'faces', '3': 1, '4': 3, '5': 11, '6': '.ente.ml.Face', '10': 'faces'},
+    {
+      '1': 'faces',
+      '3': 1,
+      '4': 3,
+      '5': 11,
+      '6': '.ente.ml.Face',
+      '10': 'faces'
+    },
     {'1': 'height', '3': 2, '4': 1, '5': 5, '9': 0, '10': 'height', '17': true},
     {'1': 'width', '3': 3, '4': 1, '5': 5, '9': 1, '10': 'width', '17': true},
-    {'1': 'version', '3': 4, '4': 1, '5': 5, '9': 2, '10': 'version', '17': true},
+    {
+      '1': 'version',
+      '3': 4,
+      '4': 1,
+      '5': 5,
+      '9': 2,
+      '10': 'version',
+      '17': true
+    },
     {'1': 'error', '3': 5, '4': 1, '5': 9, '9': 3, '10': 'error', '17': true},
   ],
   '8': [
@@ -54,4 +69,3 @@ final $typed_data.Uint8List fileFacesDescriptor = $convert.base64Decode(
     'dodBgCIAEoBUgAUgZoZWlnaHSIAQESGQoFd2lkdGgYAyABKAVIAVIFd2lkdGiIAQESHQoHdmVy'
     'c2lvbhgEIAEoBUgCUgd2ZXJzaW9uiAEBEhkKBWVycm9yGAUgASgJSANSBWVycm9yiAEBQgkKB1'
     '9oZWlnaHRCCAoGX3dpZHRoQgoKCF92ZXJzaW9uQggKBl9lcnJvcg==');
-

mobile/apps/photos/lib/generated/protos/ente/ml/fileml.pbserver.dart

@@ -11,4 +11,3 @@
 // ignore_for_file: unnecessary_import, unnecessary_this, unused_import
 
 export 'fileml.pb.dart';
-

mobile/apps/photos/lib/main.dart

@@ -43,6 +43,7 @@ import 'package:photos/services/sync/remote_sync_service.dart';
 import "package:photos/services/sync/sync_service.dart";
 import "package:photos/services/video_preview_service.dart";
 import "package:photos/services/wake_lock_service.dart";
+import "package:photos/src/rust/frb_generated.dart";
 import 'package:photos/ui/tools/app_lock.dart';
 import 'package:photos/ui/tools/lock_screen.dart';
 import "package:photos/utils/email_util.dart";
@@ -63,6 +64,7 @@ const kFGTaskDeathTimeoutInMicroseconds = 5000000;
 
 void main() async {
   debugRepaintRainbowEnabled = false;
+  await RustLib.init();
   WidgetsFlutterBinding.ensureInitialized();
   MediaKit.ensureInitialized();
 

mobile/apps/photos/lib/models/api/user/srp.dart

@@ -5,7 +5,6 @@ class SetupSRPRequest {
   final String srpA;
   final bool isUpdate;
 
-
   SetupSRPRequest({
     required this.srpUserID,
     required this.srpSalt,
@@ -82,6 +81,7 @@ class CompleteSRPSetupRequest {
     );
   }
 }
+
 class SrpAttributes {
   final String srpUserID;
   final String srpSalt;

mobile/apps/photos/lib/services/machine_learning/face_ml/face_clustering/face_clustering_service.dart

@@ -507,7 +507,8 @@ ClusteringResult _runCompleteClustering(Map args) {
           EVector.fromBuffer(entry.value).values,
           dtype: DType.float32,
         ),
-        fileCreationTime: fileIDToCreationTime?[getFileIdFromFaceId<int>(entry.key)],
+        fileCreationTime:
+            fileIDToCreationTime?[getFileIdFromFaceId<int>(entry.key)],
       ),
     );
   }

mobile/apps/photos/lib/services/machine_learning/ml_constants.dart

@@ -1 +1 @@
-const imageEmbeddingsKey = "imageEmbeddings";
+const imageEmbeddingsKey = "imageEmbeddings";

mobile/apps/photos/lib/services/machine_learning/ml_exceptions.dart

@@ -1,4 +1,3 @@
-
 class GeneralFaceMlException implements Exception {
   final String message;
 
@@ -26,4 +25,4 @@ class CouldNotRunFaceDetector implements Exception {}
 
 class CouldNotWarpAffine implements Exception {}
 
-class CouldNotRunFaceEmbeddor implements Exception {}
+class CouldNotRunFaceEmbeddor implements Exception {}

mobile/apps/photos/lib/services/machine_learning/semantic_search/query_result.dart

@@ -3,4 +3,4 @@ class QueryResult {
   final double score;
 
   QueryResult(this.id, this.score);
-}
+}

mobile/apps/photos/lib/services/machine_learning/semantic_search/semantic_search_service.dart

@@ -8,6 +8,7 @@ import "package:logging/logging.dart";
 import "package:photos/core/cache/lru_map.dart";
 import "package:photos/core/event_bus.dart";
 import "package:photos/db/files_db.dart";
+import "package:photos/db/ml/clip_vector_db.dart";
 import "package:photos/db/ml/db.dart";
 import 'package:photos/events/embedding_updated_event.dart';
 import "package:photos/models/file/file.dart";
@@ -265,10 +266,25 @@ class SemanticSearchService {
     required Map<String, double> minimumSimilarityMap,
   }) async {
     final startTime = DateTime.now();
-    await _cacheClipVectors();
-    final Map<String, List<QueryResult>> queryResults = await MLComputer
-        .instance
-        .computeBulkSimilarities(textQueryToEmbeddingMap, minimumSimilarityMap);
+    if (kDebugMode) {
+      for (final queryText in textQueryToEmbeddingMap.keys) {
+        final embedding = textQueryToEmbeddingMap[queryText]!;
+        dev.log("CLIPTEXT Query: $queryText, embedding: $embedding");
+      }
+    }
+    late final Map<String, List<QueryResult>> queryResults;
+    if (flagService.enableVectorDb) {
+      queryResults = await ClipVectorDB.instance.computeBulkSimilarities(
+        textQueryToEmbeddingMap,
+        minimumSimilarityMap,
+      );
+    } else {
+      await _cacheClipVectors();
+      queryResults = await MLComputer.instance.computeBulkSimilarities(
+        textQueryToEmbeddingMap,
+        minimumSimilarityMap,
+      );
+    }
     final endTime = DateTime.now();
     _logger.info(
       "computingSimilarities took for ${textQueryToEmbeddingMap.length} queries " +

mobile/apps/photos/lib/src/rust/api/simple.dart

@@ -0,0 +1,12 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.11.1.
+
+// ignore_for_file: require_trailing_commas
+
+// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import
+
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';
+import 'package:photos/src/rust/frb_generated.dart';
+
+String greet({required String name}) =>
+    RustLib.instance.api.crateApiSimpleGreet(name: name);

mobile/apps/photos/lib/src/rust/api/usearch_api.dart

@@ -0,0 +1,48 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.11.1.
+
+// ignore_for_file: require_trailing_commas
+
+// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import
+
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';
+import 'package:photos/src/rust/frb_generated.dart';
+
+// These functions are ignored because they are not marked as `pub`: `ensure_capacity`, `save_index`
+
+// Rust type: RustOpaqueMoi<flutter_rust_bridge::for_generated::RustAutoOpaqueInner<VectorDB>>
+abstract class VectorDb implements RustOpaqueInterface {
+  Future<void> addVector({required BigInt key, required List<double> vector});
+
+  Future<void> bulkAddVectors(
+      {required Uint64List keys, required List<Float32List> vectors});
+
+  Future<List<Float32List>> bulkGetVectors({required Uint64List keys});
+
+  Future<BigInt> bulkRemoveVectors({required Uint64List keys});
+
+  Future<(List<Uint64List>, List<Float32List>)> bulkSearchVectors(
+      {required List<Float32List> queries, required BigInt count});
+
+  /// Check if a vector with the given key exists in the index.
+  /// `true` if the index contains the vector with the given key, `false` otherwise.
+  Future<bool> containsVector({required BigInt key});
+
+  Future<void> deleteIndex();
+
+  Future<(BigInt, BigInt, BigInt, BigInt, BigInt, BigInt, BigInt)>
+      getIndexStats();
+
+  Future<Float32List> getVector({required BigInt key});
+
+  factory VectorDb({required String filePath, required BigInt dimensions}) =>
+      RustLib.instance.api.crateApiUsearchApiVectorDbNew(
+          filePath: filePath, dimensions: dimensions);
+
+  Future<BigInt> removeVector({required BigInt key});
+
+  Future<void> resetIndex();
+
+  Future<(Uint64List, Float32List)> searchVectors(
+      {required List<double> query, required BigInt count});
+}

mobile/apps/photos/lib/src/rust/frb_generated.io.dart

@@ -0,0 +1,293 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.11.1.
+
+// ignore_for_file: require_trailing_commas
+
+// ignore_for_file: unused_import, unused_element, unnecessary_import, duplicate_ignore, invalid_use_of_internal_member, annotate_overrides, non_constant_identifier_names, curly_braces_in_flow_control_structures, prefer_const_literals_to_create_immutables, unused_field
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:ffi' as ffi;
+
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated_io.dart';
+import 'package:photos/src/rust/api/simple.dart';
+import 'package:photos/src/rust/api/usearch_api.dart';
+import 'package:photos/src/rust/frb_generated.dart';
+
+abstract class RustLibApiImplPlatform extends BaseApiImpl<RustLibWire> {
+  RustLibApiImplPlatform({
+    required super.handler,
+    required super.wire,
+    required super.generalizedFrbRustBinding,
+    required super.portManager,
+  });
+
+  CrossPlatformFinalizerArg get rust_arc_decrement_strong_count_VectorDbPtr => wire
+      ._rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDBPtr;
+
+  @protected
+  VectorDb
+      dco_decode_Auto_Owned_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          dynamic raw);
+
+  @protected
+  VectorDb
+      dco_decode_Auto_Ref_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          dynamic raw);
+
+  @protected
+  VectorDb
+      dco_decode_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          dynamic raw);
+
+  @protected
+  String dco_decode_String(dynamic raw);
+
+  @protected
+  bool dco_decode_bool(dynamic raw);
+
+  @protected
+  double dco_decode_f_32(dynamic raw);
+
+  @protected
+  List<Float32List> dco_decode_list_list_prim_f_32_strict(dynamic raw);
+
+  @protected
+  List<Uint64List> dco_decode_list_list_prim_u_64_strict(dynamic raw);
+
+  @protected
+  List<double> dco_decode_list_prim_f_32_loose(dynamic raw);
+
+  @protected
+  Float32List dco_decode_list_prim_f_32_strict(dynamic raw);
+
+  @protected
+  Uint64List dco_decode_list_prim_u_64_strict(dynamic raw);
+
+  @protected
+  Uint8List dco_decode_list_prim_u_8_strict(dynamic raw);
+
+  @protected
+  (List<Uint64List>, List<Float32List>)
+      dco_decode_record_list_list_prim_u_64_strict_list_list_prim_f_32_strict(
+          dynamic raw);
+
+  @protected
+  (
+    Uint64List,
+    Float32List
+  ) dco_decode_record_list_prim_u_64_strict_list_prim_f_32_strict(dynamic raw);
+
+  @protected
+  (BigInt, BigInt, BigInt, BigInt, BigInt, BigInt, BigInt)
+      dco_decode_record_usize_usize_usize_usize_usize_usize_usize(dynamic raw);
+
+  @protected
+  BigInt dco_decode_u_64(dynamic raw);
+
+  @protected
+  int dco_decode_u_8(dynamic raw);
+
+  @protected
+  void dco_decode_unit(dynamic raw);
+
+  @protected
+  BigInt dco_decode_usize(dynamic raw);
+
+  @protected
+  VectorDb
+      sse_decode_Auto_Owned_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          SseDeserializer deserializer);
+
+  @protected
+  VectorDb
+      sse_decode_Auto_Ref_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          SseDeserializer deserializer);
+
+  @protected
+  VectorDb
+      sse_decode_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          SseDeserializer deserializer);
+
+  @protected
+  String sse_decode_String(SseDeserializer deserializer);
+
+  @protected
+  bool sse_decode_bool(SseDeserializer deserializer);
+
+  @protected
+  double sse_decode_f_32(SseDeserializer deserializer);
+
+  @protected
+  List<Float32List> sse_decode_list_list_prim_f_32_strict(
+      SseDeserializer deserializer);
+
+  @protected
+  List<Uint64List> sse_decode_list_list_prim_u_64_strict(
+      SseDeserializer deserializer);
+
+  @protected
+  List<double> sse_decode_list_prim_f_32_loose(SseDeserializer deserializer);
+
+  @protected
+  Float32List sse_decode_list_prim_f_32_strict(SseDeserializer deserializer);
+
+  @protected
+  Uint64List sse_decode_list_prim_u_64_strict(SseDeserializer deserializer);
+
+  @protected
+  Uint8List sse_decode_list_prim_u_8_strict(SseDeserializer deserializer);
+
+  @protected
+  (List<Uint64List>, List<Float32List>)
+      sse_decode_record_list_list_prim_u_64_strict_list_list_prim_f_32_strict(
+          SseDeserializer deserializer);
+
+  @protected
+  (Uint64List, Float32List)
+      sse_decode_record_list_prim_u_64_strict_list_prim_f_32_strict(
+          SseDeserializer deserializer);
+
+  @protected
+  (BigInt, BigInt, BigInt, BigInt, BigInt, BigInt, BigInt)
+      sse_decode_record_usize_usize_usize_usize_usize_usize_usize(
+          SseDeserializer deserializer);
+
+  @protected
+  BigInt sse_decode_u_64(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_u_8(SseDeserializer deserializer);
+
+  @protected
+  void sse_decode_unit(SseDeserializer deserializer);
+
+  @protected
+  BigInt sse_decode_usize(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_i_32(SseDeserializer deserializer);
+
+  @protected
+  void
+      sse_encode_Auto_Owned_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          VectorDb self, SseSerializer serializer);
+
+  @protected
+  void
+      sse_encode_Auto_Ref_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          VectorDb self, SseSerializer serializer);
+
+  @protected
+  void
+      sse_encode_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+          VectorDb self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_String(String self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_bool(bool self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_f_32(double self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_list_prim_f_32_strict(
+      List<Float32List> self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_list_prim_u_64_strict(
+      List<Uint64List> self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_f_32_loose(
+      List<double> self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_f_32_strict(
+      Float32List self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_u_64_strict(
+      Uint64List self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_u_8_strict(
+      Uint8List self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_record_list_list_prim_u_64_strict_list_list_prim_f_32_strict(
+      (List<Uint64List>, List<Float32List>) self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_record_list_prim_u_64_strict_list_prim_f_32_strict(
+      (Uint64List, Float32List) self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_record_usize_usize_usize_usize_usize_usize_usize(
+      (BigInt, BigInt, BigInt, BigInt, BigInt, BigInt, BigInt) self,
+      SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_64(BigInt self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_8(int self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_unit(void self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_usize(BigInt self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_i_32(int self, SseSerializer serializer);
+}
+
+// Section: wire_class
+
+class RustLibWire implements BaseWire {
+  factory RustLibWire.fromExternalLibrary(ExternalLibrary lib) =>
+      RustLibWire(lib.ffiDynamicLibrary);
+
+  /// Holds the symbol lookup function.
+  final ffi.Pointer<T> Function<T extends ffi.NativeType>(String symbolName)
+      _lookup;
+
+  /// The symbols are looked up in [dynamicLibrary].
+  RustLibWire(ffi.DynamicLibrary dynamicLibrary)
+      : _lookup = dynamicLibrary.lookup;
+
+  void
+      rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+    ffi.Pointer<ffi.Void> ptr,
+  ) {
+    return _rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+      ptr,
+    );
+  }
+
+  late final _rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDBPtr =
+      _lookup<ffi.NativeFunction<ffi.Void Function(ffi.Pointer<ffi.Void>)>>(
+          'frbgen_photos_rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB');
+  late final _rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB =
+      _rust_arc_increment_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDBPtr
+          .asFunction<void Function(ffi.Pointer<ffi.Void>)>();
+
+  void
+      rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+    ffi.Pointer<ffi.Void> ptr,
+  ) {
+    return _rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB(
+      ptr,
+    );
+  }
+
+  late final _rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDBPtr =
+      _lookup<ffi.NativeFunction<ffi.Void Function(ffi.Pointer<ffi.Void>)>>(
+          'frbgen_photos_rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB');
+  late final _rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDB =
+      _rust_arc_decrement_strong_count_RustOpaque_flutter_rust_bridgefor_generatedRustAutoOpaqueInnerVectorDBPtr
+          .asFunction<void Function(ffi.Pointer<ffi.Void>)>();
+}

mobile/apps/photos/lib/ui/components/bottom_of_title_bar_widget.dart

@@ -18,8 +18,9 @@ class BottomOfTitleBarWidget extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Row(
-      mainAxisAlignment: showCloseButton ? MainAxisAlignment.spaceBetween :
-      MainAxisAlignment.start,
+      mainAxisAlignment: showCloseButton
+          ? MainAxisAlignment.spaceBetween
+          : MainAxisAlignment.start,
       children: [
         Flexible(
           child: Padding(

mobile/apps/photos/lib/ui/extents_page_view.dart

@@ -100,7 +100,7 @@ class ExtentsPageView extends StatefulWidget {
     int? itemCount,
     this.dragStartBehavior = DragStartBehavior.start,
     this.openDrawer,
-  })  : childrenDelegate = SliverChildBuilderDelegate(
+  }) : childrenDelegate = SliverChildBuilderDelegate(
           itemBuilder,
           childCount: itemCount,
           addAutomaticKeepAlives: false,
@@ -198,7 +198,7 @@ class ExtentsPageView extends StatefulWidget {
     required this.childrenDelegate,
     this.dragStartBehavior = DragStartBehavior.start,
     this.openDrawer,
-  })  : extents = 0;
+  }) : extents = 0;
 
   /// The number of pages to build off screen.
   ///

mobile/apps/photos/lib/ui/home/header_error_widget.dart

@@ -9,8 +9,7 @@ import "package:photos/utils/navigation_util.dart";
 class HeaderErrorWidget extends StatelessWidget {
   final Error? _error;
 
-  const HeaderErrorWidget({super.key, required Error? error})
-      : _error = error;
+  const HeaderErrorWidget({super.key, required Error? error}) : _error = error;
 
   @override
   Widget build(BuildContext context) {

mobile/apps/photos/lib/ui/settings/debug/ml_debug_section_widget.dart

@@ -1,11 +1,20 @@
 import "dart:async";
+import "dart:math" show Random;
+import "dart:typed_data" show Float32List;
 
+import "package:flutter/foundation.dart" show kDebugMode;
 import 'package:flutter/material.dart';
+import "package:flutter_rust_bridge/flutter_rust_bridge.dart";
 import "package:logging/logging.dart";
+import "package:ml_linalg/linalg.dart";
+import "package:path_provider/path_provider.dart";
 import "package:photos/core/constants.dart";
 import "package:photos/core/event_bus.dart";
+import "package:photos/db/ml/clip_vector_db.dart";
 import "package:photos/db/ml/db.dart";
 import "package:photos/events/people_changed_event.dart";
+import "package:photos/extensions/stop_watch.dart";
+import "package:photos/generated/protos/ente/common/vector.pb.dart";
 import "package:photos/models/ml/face/person.dart";
 import "package:photos/models/search/generic_search_result.dart";
 import "package:photos/service_locator.dart";
@@ -15,6 +24,8 @@ import 'package:photos/services/machine_learning/ml_service.dart';
 import "package:photos/services/machine_learning/semantic_search/semantic_search_service.dart";
 import "package:photos/services/notification_service.dart";
 import "package:photos/services/search_service.dart";
+import "package:photos/src/rust/api/simple.dart";
+import "package:photos/src/rust/api/usearch_api.dart";
 import 'package:photos/theme/ente_theme.dart';
 import 'package:photos/ui/components/captioned_text_widget.dart';
 import 'package:photos/ui/components/expandable_menu_item_widget.dart';
@@ -184,6 +195,380 @@ class _MLDebugSectionWidgetState extends State<MLDebugSectionWidget> {
           },
         ),
         sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Do some basic usearch",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              // randomly generate some vectors and keys
+              final random = Random();
+              final tenEmbeddings = List.generate(
+                10,
+                (index) {
+                  final randomList = List<double>.generate(
+                    192,
+                    (_) => random.nextDouble(), // Values between 0 and 1
+                  );
+                  final randomVector = Vector.fromList(randomList).normalize();
+                  return Float32List.fromList(randomVector.toList());
+                },
+              );
+              final tenKeys = Uint64List.fromList(
+                List.generate(
+                  tenEmbeddings.length,
+                  (index) => BigInt.from(index + 1),
+                ),
+              );
+              final embedDimensions = BigInt.from(tenEmbeddings.first.length);
+              final indexPath = (await getApplicationSupportDirectory()).path +
+                  "/ml/test/vector_db_index.usearch";
+              final rustVectorDB = VectorDb(
+                filePath: indexPath,
+                dimensions: embedDimensions,
+              );
+              await rustVectorDB.resetIndex();
+              final stats = await rustVectorDB.getIndexStats();
+              logger.info("vector_db stats: $stats");
+              await rustVectorDB.bulkAddVectors(
+                keys: tenKeys,
+                vectors: tenEmbeddings,
+              );
+              final statsAgain = await rustVectorDB.getIndexStats();
+              logger.info("vector_db stats again: $statsAgain");
+              final size = statsAgain.$1;
+              final capacity = statsAgain.$2;
+              final dimensions = statsAgain.$3;
+              showShortToast(
+                context,
+                "Size: $size, Capacity: $capacity, Dimensions: $dimensions",
+              );
+              await rustVectorDB.deleteIndex();
+            } catch (e, s) {
+              logger.warning('Rust bridge failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Fill ClipVectorDB",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final allClip = await MLDataDB.instance.getAllClipVectors();
+              final allClipSmall = allClip.sublist(0, 15000);
+              showShortToast(context, "Got all embeddings");
+              logger.info("Got all embeddings");
+
+              final clipVectorDB = ClipVectorDB.instance;
+              await clipVectorDB.deleteAllEmbeddings();
+              logger.info("Clean vector DB");
+              final stats = await clipVectorDB.getIndexStats();
+              logger.info(stats.toString());
+              showShortToast(context, stats.toString());
+
+              final fileIDs = allClipSmall.map((e) => e.fileID).toList();
+              final embeddings = allClipSmall
+                  .map((e) => Float32List.fromList(e.vector.toList()))
+                  .toList();
+              showShortToast(context, "Reshaped embeddings data");
+              logger.info("Reshaped embeddings data");
+
+              final now = DateTime.now();
+              await clipVectorDB.bulkInsertEmbeddings(
+                fileIDs: fileIDs,
+                embeddings: embeddings,
+              );
+              final duration = DateTime.now().difference(now);
+              logger.info(
+                "ClipVectorDB bulk insert took ${duration.inMilliseconds} ms for ${fileIDs.length} embeddings",
+              );
+              final statsAfter = await clipVectorDB.getIndexStats();
+              logger.info(statsAfter.toString());
+              showShortToast(context, statsAfter.toString());
+            } catch (e, s) {
+              logger.warning('ClipVectorDB migration failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Migrate to ClipVectorDB",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              await MLDataDB.instance.checkMigrateFillClipVectorDB();
+              showShortToast(context, "Migration done!");
+            } catch (e, s) {
+              logger.warning('ClipVectorDB migration failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Show ClipVectorDB stats",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final clipVectorDB = ClipVectorDB.instance;
+              final stats = await clipVectorDB.getIndexStats();
+              logger.info(stats.toString());
+              showShortToast(context, stats.toString());
+            } catch (e, s) {
+              logger.warning('ClipVectorDB stats failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Delete/Empty ClipVectorDB",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final clipVectorDB = ClipVectorDB.instance;
+              await clipVectorDB.deleteIndex();
+            } catch (e, s) {
+              logger.warning('ClipVectorDB cleanup failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Benchmark Vector DB Face",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final w = (kDebugMode ? EnteWatch('MLDebugSectionWidget') : null)
+                ?..start();
+              final persons = await PersonService.instance.getPersons();
+              w?.log('get all persons for ${persons.length} persons');
+              String laurensID = '';
+              for (final person in persons) {
+                if (person.data.name.toLowerCase().contains('laurens')) {
+                  laurensID = person.remoteID;
+                }
+              }
+              if (laurensID.isEmpty) {
+                throw Exception('Laurens not found');
+              }
+              final laurensFaceIDs =
+                  await MLDataDB.instance.getFaceIDsForPerson(laurensID);
+              w?.log(
+                'getting all face ids for laurens (${laurensFaceIDs.length} faces)',
+              );
+              final laurensFaceIdToEmbeddingData = await MLDataDB.instance
+                  .getFaceEmbeddingMapForFaces(laurensFaceIDs);
+
+              // Fill the vector DB with all embeddings
+              final laurensFaceIdToFloat32 = laurensFaceIdToEmbeddingData.map(
+                (key, value) => MapEntry(
+                  key,
+                  Float32List.fromList(EVector.fromBuffer(value).values),
+                ),
+              );
+              final keys = Uint64List.fromList(
+                List.generate(
+                  laurensFaceIdToFloat32.length,
+                  (index) => BigInt.from(index + 1),
+                ),
+              );
+              final vectorDB = VectorDb(
+                filePath: (await getApplicationSupportDirectory()).path +
+                    "/ml/test/vector_db_face_index.usearch",
+                dimensions: BigInt.from(
+                  laurensFaceIdToFloat32.values.first.length,
+                ),
+              );
+              await vectorDB.resetIndex();
+              await vectorDB.bulkAddVectors(
+                keys: keys,
+                vectors: laurensFaceIdToFloat32.values.toList(),
+              );
+
+              // Benchmarking the vector DB
+              final queries = laurensFaceIdToFloat32.values.toList();
+              final count = BigInt.from(10);
+              w?.reset();
+              final (vectorKeys, distances) = await vectorDB.bulkSearchVectors(
+                queries: queries,
+                count: count,
+              );
+
+              w?.log(
+                'Done with ${queries.length * queries.length} (${queries.length} x ${queries.length}}) embeddings comparisons in vector DB',
+              );
+              logger.info(
+                'vector db results: ${vectorKeys.length} results, first: ${vectorKeys.first}, hundredth: ${vectorKeys[99]}',
+              );
+
+              // Benchmarking our own vector comparisons
+              final laurensFaceIdToEmbeddingVectors =
+                  laurensFaceIdToEmbeddingData.map(
+                (key, value) => MapEntry(
+                  key,
+                  Vector.fromList(EVector.fromBuffer(value).values),
+                ),
+              );
+              final faceVectors = laurensFaceIdToEmbeddingVectors.values;
+              w?.reset();
+              for (final faceVector in faceVectors) {
+                for (final otherFaceVector in faceVectors) {
+                  final _ = 1 - faceVector.dot(otherFaceVector);
+                }
+              }
+
+              w?.log(
+                'Done with ${faceVectors.length * faceVectors.length} (${faceVectors.length} x ${faceVectors.length}}) embeddings comparisons in own method',
+              );
+              await vectorDB.deleteIndex();
+            } catch (e, s) {
+              logger.warning('vector DB search failed ', e, s);
+
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Benchmark Vector DB CLIP",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final w = (kDebugMode ? EnteWatch('MLDebugSectionWidget') : null)
+                ?..start();
+              final clipEmbeddings = await mlDataDB.getAllClipVectors();
+              w?.log(
+                'getting all clip embeddings (${clipEmbeddings.length} embeddings)',
+              );
+
+              // Fill the vector DB with all embeddings
+              final clipFloat32 = clipEmbeddings
+                  .map(
+                    (value) => Float32List.fromList(value.vector.toList()),
+                  )
+                  .toList();
+              final keys = Uint64List.fromList(
+                List.generate(
+                  clipFloat32.length,
+                  (index) => BigInt.from(index + 1),
+                ),
+              );
+              final vectorDB = VectorDb(
+                filePath: (await getApplicationSupportDirectory()).path +
+                    "/ml/test/vector_db_clip_index.usearch",
+                dimensions: BigInt.from(
+                  clipFloat32.first.length,
+                ),
+              );
+              await vectorDB.resetIndex();
+              await vectorDB.bulkAddVectors(
+                keys: keys,
+                vectors: clipFloat32,
+              );
+
+              // Benchmarking the vector DB
+              final count = BigInt.from(10);
+              w?.reset();
+              final (vectorKeys, distances) = await vectorDB.bulkSearchVectors(
+                queries: clipFloat32,
+                count: count,
+              );
+
+              w?.log(
+                'Done with ${clipFloat32.length * clipFloat32.length} (${clipFloat32.length} x ${clipFloat32.length}}) embeddings comparisons in vector DB',
+              );
+              logger.info(
+                'vector db results: ${vectorKeys.length} results, first: ${vectorKeys.first} with distances ${distances.first}, hundredth: ${vectorKeys[99]} with distances ${distances[99]}',
+              );
+
+              // // Benchmarking our own vector comparisons
+              // final clipVectors = clipEmbeddings
+              //     .map(
+              //       (value) => value.vector,
+              //     )
+              //     .toList();
+              // w?.reset();
+              // int compared = 0;
+              // int ms = DateTime.now().millisecondsSinceEpoch;
+              // for (final faceVector in clipVectors) {
+              //   for (final otherFaceVector in clipVectors) {
+              //     final _ = 1 - faceVector.dot(otherFaceVector);
+              //   }
+              //   compared++;
+              //   if (compared % 100 == 0) {
+              //     final now = DateTime.now().millisecondsSinceEpoch;
+              //     logger.info(
+              //       'Compared next 100 in ${now - ms} ms, progress: ($compared / ${clipVectors.length})',
+              //     );
+              //     ms = now;
+              //   }
+              // }
+              // w?.log(
+              //   'Done with ${clipVectors.length * clipVectors.length} (${clipVectors.length} x ${clipVectors.length}}) embeddings comparisons in own method',
+              // );
+
+              await vectorDB.deleteIndex();
+            } catch (e, s) {
+              logger.warning('vector DB search failed ', e, s);
+
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
+        MenuItemWidget(
+          captionedTextWidget: const CaptionedTextWidget(
+            title: "Test rust bridge",
+          ),
+          pressedColor: getEnteColorScheme(context).fillFaint,
+          trailingIcon: Icons.chevron_right_outlined,
+          trailingIconIsMuted: true,
+          onTap: () async {
+            try {
+              final String greetings = greet(name: "Tom");
+              const String expected = "Hello, Tom!";
+              assert(greetings == expected);
+              debugPrint("String from rust: $greetings");
+              showShortToast(context, greetings);
+            } catch (e, s) {
+              logger.warning('Rust bridge failed ', e, s);
+              await showGenericErrorDialog(context: context, error: e);
+            }
+          },
+        ),
+        sectionOptionSpacing,
         MenuItemWidget(
           captionedTextWidget: FutureBuilder<IndexStatus>(
             future: getIndexStatus(),

mobile/apps/photos/lib/ui/settings/ml/ml_user_dev_screen.dart

@@ -57,57 +57,69 @@ class _MLUserDeveloperOptionsState extends State<MLUserDeveloperOptions> {
                           ),
                     ),
                     const SizedBox(height: 48),
-                    widget.mlIsEnabled ? ButtonWidget(
-                      buttonType: ButtonType.neutral,
-                      labelText: "Purge empty indices",
-                      onTap: () async {
-                        await deleteEmptyIndices(context);
-                      },
-                    ) : const SizedBox(),
-                    widget.mlIsEnabled ? const SizedBox(height: 24) : const SizedBox(),
-                    widget.mlIsEnabled ? ButtonWidget(
-                      buttonType: ButtonType.neutral,
-                      labelText: "Reset all local ML",
-                      onTap: () async {
-                        await deleteAllLocalML(context);
-                      },
-                    ) : const SizedBox(),
-                    widget.mlIsEnabled ? const SizedBox(height: 24) : const SizedBox(),
-                    widget.mlIsEnabled ? MenuItemWidget(
-                      captionedTextWidget: const CaptionedTextWidget(
-                        title: "Remote fetch",
-                      ),
-                      menuItemColor: colorScheme.fillFaint,
-                      trailingWidget: ToggleSwitchWidget(
-                        value: () => localSettings.remoteFetchEnabled,
-                        onChanged: () async {
-                          try {
-                            await localSettings.toggleRemoteFetch();
-                            _logger.info(
-                              'Remote fetch is turned ${localSettings.remoteFetchEnabled ? 'on' : 'off'}',
-                            );
-                            if (mounted) {
-                              setState(() {});
-                            }
-                          } catch (e, s) {
-                            _logger.warning(
-                              'Remote fetch toggle failed ',
-                              e,
-                              s,
-                            );
-                            await showGenericErrorDialog(
-                              context: context,
-                              error: e,
-                            );
-                          }
-                        },
-                      ),
-                      singleBorderRadius: 8,
-                      alignCaptionedTextToLeft: true,
-                      isBottomBorderRadiusRemoved: true,
-                      isGestureDetectorDisabled: true,
-                    ) : const SizedBox(),
-                    widget.mlIsEnabled ? const SizedBox(height: 24) : const SizedBox.shrink(),
+                    widget.mlIsEnabled
+                        ? ButtonWidget(
+                            buttonType: ButtonType.neutral,
+                            labelText: "Purge empty indices",
+                            onTap: () async {
+                              await deleteEmptyIndices(context);
+                            },
+                          )
+                        : const SizedBox(),
+                    widget.mlIsEnabled
+                        ? const SizedBox(height: 24)
+                        : const SizedBox(),
+                    widget.mlIsEnabled
+                        ? ButtonWidget(
+                            buttonType: ButtonType.neutral,
+                            labelText: "Reset all local ML",
+                            onTap: () async {
+                              await deleteAllLocalML(context);
+                            },
+                          )
+                        : const SizedBox(),
+                    widget.mlIsEnabled
+                        ? const SizedBox(height: 24)
+                        : const SizedBox(),
+                    widget.mlIsEnabled
+                        ? MenuItemWidget(
+                            captionedTextWidget: const CaptionedTextWidget(
+                              title: "Remote fetch",
+                            ),
+                            menuItemColor: colorScheme.fillFaint,
+                            trailingWidget: ToggleSwitchWidget(
+                              value: () => localSettings.remoteFetchEnabled,
+                              onChanged: () async {
+                                try {
+                                  await localSettings.toggleRemoteFetch();
+                                  _logger.info(
+                                    'Remote fetch is turned ${localSettings.remoteFetchEnabled ? 'on' : 'off'}',
+                                  );
+                                  if (mounted) {
+                                    setState(() {});
+                                  }
+                                } catch (e, s) {
+                                  _logger.warning(
+                                    'Remote fetch toggle failed ',
+                                    e,
+                                    s,
+                                  );
+                                  await showGenericErrorDialog(
+                                    context: context,
+                                    error: e,
+                                  );
+                                }
+                              },
+                            ),
+                            singleBorderRadius: 8,
+                            alignCaptionedTextToLeft: true,
+                            isBottomBorderRadiusRemoved: true,
+                            isGestureDetectorDisabled: true,
+                          )
+                        : const SizedBox(),
+                    widget.mlIsEnabled
+                        ? const SizedBox(height: 24)
+                        : const SizedBox.shrink(),
                     ButtonWidget(
                       buttonType: ButtonType.neutral,
                       labelText: "Load face detection model",

mobile/apps/photos/lib/ui/tools/collage/collage_item_widget.dart

@@ -1,4 +1,3 @@
-
 import "package:flutter/material.dart";
 import 'package:photos/models/file/file.dart';
 import "package:photos/ui/viewer/file/zoomable_image.dart";

mobile/apps/photos/lib/ui/viewer/actions/file_selection_actions_widget.dart

@@ -1,7 +1,6 @@
 import "dart:async";
 
 import 'package:fast_base58/fast_base58.dart';
-import "package:flutter/cupertino.dart";
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import "package:local_auth/local_auth.dart";

mobile/apps/photos/lib/ui/viewer/date/date_time_picker.dart

@@ -3,7 +3,8 @@ import "package:flutter/material.dart";
 import "package:photos/generated/l10n.dart";
 import "package:photos/theme/ente_theme.dart";
 
-Future<DateTime?> showDatePickerSheet(BuildContext context, {
+Future<DateTime?> showDatePickerSheet(
+  BuildContext context, {
   required DateTime initialDate,
   DateTime? maxDate,
   DateTime? minDate,

mobile/apps/photos/lib/ui/viewer/file/exif_info_dialog.dart

@@ -1,4 +1,3 @@
-
 import 'package:flutter/material.dart';
 import "package:photos/generated/l10n.dart";
 import 'package:photos/models/file/file.dart';

mobile/apps/photos/lib/ui/viewer/file_details/creation_time_item_widget.dart

@@ -5,6 +5,7 @@ import "package:photos/theme/ente_theme.dart";
 import "package:photos/ui/components/info_item_widget.dart";
 import "package:photos/ui/viewer/date/edit_date_sheet.dart";
 import "package:photos/utils/standalone/date_time.dart";
+
 class CreationTimeItem extends StatefulWidget {
   final EnteFile file;
   final int currentUserID;

mobile/apps/photos/lib/ui/viewer/people/people_util.dart

@@ -1,18 +1,16 @@
-
-
 import "package:photos/core/configuration.dart";
 import "package:photos/services/machine_learning/face_ml/person/person_service.dart";
 
 Future<bool> isMeAssigned() async {
-    final personEntities = await PersonService.instance.getPersons();
-    final currentUserEmail = Configuration.instance.getEmail();
+  final personEntities = await PersonService.instance.getPersons();
+  final currentUserEmail = Configuration.instance.getEmail();
 
-    bool isAssigned = false;
-    for (final personEntity in personEntities) {
-      if (personEntity.data.email == currentUserEmail) {
-        isAssigned = true;
-        break;
-      }
+  bool isAssigned = false;
+  for (final personEntity in personEntities) {
+    if (personEntity.data.email == currentUserEmail) {
+      isAssigned = true;
+      break;
     }
-    return isAssigned;
-  }
+  }
+  return isAssigned;
+}

mobile/apps/photos/lib/utils/file_uploader.dart

@@ -23,7 +23,7 @@ import "package:photos/events/file_uploaded_event.dart";
 import 'package:photos/events/files_updated_event.dart';
 import 'package:photos/events/local_photos_updated_event.dart';
 import 'package:photos/events/subscription_purchased_event.dart';
-import 'package:photos/main.dart';
+import "package:photos/main.dart";
 import "package:photos/models/api/metadata.dart";
 import "package:photos/models/backup/backup_item.dart";
 import "package:photos/models/backup/backup_item_status.dart";

mobile/apps/photos/plugins/ente_feature_flag/lib/src/service.dart

@@ -58,6 +58,8 @@ class FlagService {
 
   bool get enableMobMultiPart => flags.enableMobMultiPart || internalUser;
 
+  bool get enableVectorDb => flags.internalUser;
+
   String get castUrl => flags.castUrl;
 
   bool hasSyncedAccountFlags() {

mobile/apps/photos/pubspec.lock

@@ -175,6 +175,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.4.1"
+  build_cli_annotations:
+    dependency: transitive
+    description:
+      name: build_cli_annotations
+      sha256: b59d2769769efd6c9ff6d4c4cede0be115a566afc591705c2040b707534b1172
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
   build_config:
     dependency: transitive
     description:
@@ -1007,6 +1015,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.24"
+  flutter_rust_bridge:
+    dependency: "direct main"
+    description:
+      name: flutter_rust_bridge
+      sha256: "37ef40bc6f863652e865f0b2563ea07f0d3c58d8efad803cc01933a4b2ee067e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.1"
   flutter_secure_storage:
     dependency: "direct main"
     description:
@@ -2137,6 +2153,13 @@ packages:
       url: "https://github.com/KasemJaffer/receive_sharing_intent.git"
     source: git
     version: "1.8.1"
+  rust_lib_photos:
+    dependency: "direct main"
+    description:
+      path: rust_builder
+      relative: true
+    source: path
+    version: "0.0.1"
   rxdart:
     dependency: transitive
     description:

mobile/apps/photos/pubspec.yaml

@@ -12,11 +12,11 @@ description: ente photos application
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 
-version: 1.1.54+1084
+version: 1.1.63+1097
 publish_to: none
 
 environment:
-  sdk: ">=3.0.0 <4.0.0"
+  sdk: ">=3.3.0 <4.0.0"
 
 dependencies:
   adaptive_theme: ^3.1.0
@@ -95,6 +95,7 @@ dependencies:
   flutter_map: ^6.2.0
   flutter_map_marker_cluster: ^1.3.6
   flutter_password_strength: ^0.1.6
+  flutter_rust_bridge: 2.11.1
   # Do not upgrade this package unless this issue is resolved:
   # https://github.com/juliansteenbakker/flutter_secure_storage/issues/870
   # On v9.2.4, keys related to lockscreen persist even after reintsall. For context see:
@@ -177,6 +178,8 @@ dependencies:
     git:
       url: https://github.com/KasemJaffer/receive_sharing_intent.git
       ref: 2cea396
+  rust_lib_photos:
+    path: rust_builder
   screenshot: ^3.0.0
   scrollable_positioned_list: ^0.3.5
   sentry: ^8.14.1

mobile/apps/photos/rust/.gitignore

@@ -0,0 +1 @@
+/target

mobile/apps/photos/rust/Cargo.lock

@@ -0,0 +1,901 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "addr2line"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "allo-isolate"
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+ "backtrace",
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+
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+
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+ "log",
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+[[package]]
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+usearch = "2.17.11"
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(frb_expand)'] }

mobile/apps/photos/rust/src/api/mod.rs

@@ -0,0 +1,2 @@
+pub mod simple;
+pub mod usearch_api;

mobile/apps/photos/rust/src/api/simple.rs

@@ -0,0 +1,10 @@
+#[flutter_rust_bridge::frb(sync)] // Synchronous mode for simplicity of the demo
+pub fn greet(name: String) -> String {
+    format!("Hello, {name}!")
+}
+
+#[flutter_rust_bridge::frb(init)]
+pub fn init_app() {
+    // Default utilities - feel free to customize
+    flutter_rust_bridge::setup_default_user_utils();
+}

mobile/apps/photos/rust/src/api/usearch_api.rs

@@ -0,0 +1,188 @@
+use flutter_rust_bridge::frb;
+use usearch::{Index, IndexOptions, MetricKind, ScalarKind};
+
+use std::path::PathBuf;
+
+#[frb(opaque)]
+pub struct VectorDB {
+    index: Index,
+    path: PathBuf,
+}
+
+impl VectorDB {
+    #[frb(sync)]
+    pub fn new(file_path: &str, dimensions: usize) -> Self {
+        let path = PathBuf::from(file_path);
+        let file_exists = path.try_exists().unwrap_or(false);
+
+        let mut options = IndexOptions::default();
+        options.dimensions = dimensions;
+        options.metric = MetricKind::IP;
+        options.quantization = ScalarKind::F32;
+        options.connectivity = 0; // auto
+        options.expansion_add = 0; // auto
+        options.expansion_search = 0; // auto
+
+        let index = Index::new(&options).expect("Failed to create index");
+        index
+            .reserve(1000)
+            .expect("Failed to reserve space in index");
+
+        let db = Self { index, path };
+
+        if file_exists {
+            println!("Loading index from disk.");
+            db.index.load(file_path).expect("Failed to load index");
+        } else {
+            println!("Creating new index.");
+            db.save_index();
+        }
+        db
+    }
+
+    fn save_index(&self) {
+        // Ensure directory exists
+        if let Some(parent) = self.path.parent() {
+            std::fs::create_dir_all(parent).expect("Failed to create directory");
+        }
+        self.index
+            .save(self.path.to_str().expect("Invalid path"))
+            .expect("Failed to save index");
+    }
+
+    fn ensure_capacity(&self, margin: usize) {
+        let current_size = self.index.size();
+        let capacity = self.index.capacity();
+        if current_size + margin + 1000 >= capacity {
+            self.index
+                .reserve(current_size + margin)
+                .expect("Failed to reserve space in index");
+        }
+    }
+
+    pub fn add_vector(&self, key: u64, vector: &Vec<f32>) {
+        if self.contains_vector(key) {
+            self.remove_vector(key);
+        } else {
+            self.ensure_capacity(1);
+        }
+        self.index.add(key, vector).expect("Failed to add vector");
+        self.save_index();
+    }
+
+    pub fn bulk_add_vectors(&self, keys: Vec<u64>, vectors: &Vec<Vec<f32>>) {
+        self.ensure_capacity(keys.len());
+        for (key, vector) in keys.iter().zip(vectors.iter()) {
+            if self.contains_vector(*key) {
+                self.remove_vector(*key);
+            }
+            self.index
+                .add(*key, vector)
+                .expect("Failed to (bulk) add vector");
+        }
+        self.save_index();
+    }
+
+    pub fn search_vectors(&self, query: &Vec<f32>, count: usize) -> (Vec<u64>, Vec<f32>) {
+        let matches = self
+            .index
+            .search(query, count)
+            .expect("Failed to search vectors");
+        (matches.keys, matches.distances)
+    }
+
+    pub fn bulk_search_vectors(
+        &self,
+        queries: &Vec<Vec<f32>>,
+        count: usize,
+    ) -> (Vec<Vec<u64>>, Vec<Vec<f32>>) {
+        let mut keys = Vec::new();
+        let mut distances = Vec::new();
+
+        for query in queries {
+            let (keys_result, distances_result) = self.search_vectors(query, count);
+            keys.push(keys_result);
+            distances.push(distances_result);
+        }
+        (keys, distances)
+    }
+
+    /// Check if a vector with the given key exists in the index.
+    /// `true` if the index contains the vector with the given key, `false` otherwise.
+    pub fn contains_vector(&self, key: u64) -> bool {
+        self.index.contains(key)
+    }
+
+    pub fn get_vector(&self, key: u64) -> Vec<f32> {
+        let mut vector: Vec<f32> = vec![0.0; self.index.dimensions()];
+        self.index
+            .get(key, &mut vector)
+            .expect("Failed to get vector");
+        vector
+    }
+
+    pub fn bulk_get_vectors(&self, keys: Vec<u64>) -> Vec<Vec<f32>> {
+        let mut vectors = Vec::new();
+        for key in keys {
+            let vector = self.get_vector(key);
+            vectors.push(vector);
+        }
+        vectors
+    }
+
+    pub fn remove_vector(&self, key: u64) -> usize {
+        let removed_count = self.index.remove(key).expect("Failed to remove vector");
+        self.save_index();
+        removed_count
+    }
+
+    pub fn bulk_remove_vectors(&self, keys: Vec<u64>) -> usize {
+        let mut removed_count = 0;
+        for key in keys {
+            removed_count += self
+                .index
+                .remove(key)
+                .expect("Failed to (bulk) remove vector");
+        }
+        self.save_index();
+        removed_count
+    }
+
+    pub fn reset_index(&self) {
+        self.index.reset().expect("Failed to reset index");
+        self.index
+            .reserve(1000)
+            .expect("Failed to reserve space in index");
+        self.save_index();
+    }
+
+    pub fn delete_index(self) {
+        if self.path.exists() {
+            std::fs::remove_file(&self.path).expect("Failed to delete index file");
+        } else {
+            println!("Index file does not exist.");
+        }
+    }
+
+    pub fn get_index_stats(&self) -> (usize, usize, usize, usize, usize, usize, usize) {
+        let size = self.index.size();
+        let capacity = self.index.capacity();
+        let dimensions = self.index.dimensions();
+
+        let file_size = self.index.serialized_length();
+        let memory_usage = self.index.memory_usage();
+
+        let expansion_add = self.index.expansion_add();
+        let expansion_search = self.index.expansion_search();
+
+        (
+            size,
+            capacity,
+            dimensions,
+            file_size,
+            memory_usage,
+            expansion_add,
+            expansion_search,
+        )
+    }
+}

mobile/apps/photos/rust/src/lib.rs

@@ -0,0 +1,2 @@
+pub mod api;
+mod frb_generated;

mobile/apps/photos/rust_builder/.gitignore

@@ -0,0 +1,29 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

mobile/apps/photos/rust_builder/README.md

@@ -0,0 +1 @@
+Please ignore this folder, which is just glue to build Rust with Flutter.

mobile/apps/photos/rust_builder/android/.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.cxx

mobile/apps/photos/rust_builder/android/build.gradle

@@ -0,0 +1,56 @@
+// The Android Gradle Plugin builds the native code with the Android NDK.
+
+group 'com.flutter_rust_bridge.rust_lib_photos'
+version '1.0'
+
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        // The Android Gradle Plugin knows how to build native code with the NDK.
+        classpath 'com.android.tools.build:gradle:7.3.0'
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    if (project.android.hasProperty("namespace")) {
+        namespace 'com.flutter_rust_bridge.rust_lib_photos'
+    }
+
+    // Bumping the plugin compileSdkVersion requires all clients of this plugin
+    // to bump the version in their app.
+    compileSdkVersion 33
+
+    // Use the NDK version
+    // declared in /android/app/build.gradle file of the Flutter project.
+    // Replace it with a version number if this plugin requires a specfic NDK version.
+    // (e.g. ndkVersion "23.1.7779620")
+    ndkVersion android.ndkVersion
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    defaultConfig {
+        minSdkVersion 19
+    }
+}
+
+apply from: "../cargokit/gradle/plugin.gradle"
+cargokit {
+    manifestDir = "../../rust"
+    libname = "rust_lib_photos"
+}

mobile/apps/photos/rust_builder/android/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'rust_lib_photos'

mobile/apps/photos/rust_builder/android/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.flutter_rust_bridge.rust_lib_photos">
+</manifest>

mobile/apps/photos/rust_builder/cargokit/.gitignore

@@ -0,0 +1,4 @@
+target
+.dart_tool
+*.iml
+!pubspec.lock

mobile/apps/photos/rust_builder/cargokit/LICENSE

@@ -0,0 +1,42 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+Copyright 2022 Matej Knopp
+
+================================================================================
+
+MIT LICENSE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+================================================================================
+
+APACHE LICENSE, VERSION 2.0
+
+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
+
+    http://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.
+

mobile/apps/photos/rust_builder/cargokit/README

@@ -0,0 +1,11 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+Experimental repository to provide glue for seamlessly integrating cargo build
+with flutter plugins and packages.
+
+See https://matejknopp.com/post/flutter_plugin_in_rust_with_no_prebuilt_binaries/
+for a tutorial on how to use Cargokit.
+
+Example plugin available at https://github.com/irondash/hello_rust_ffi_plugin.
+

mobile/apps/photos/rust_builder/cargokit/build_pod.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+set -e
+
+BASEDIR=$(dirname "$0")
+
+# Workaround for https://github.com/dart-lang/pub/issues/4010
+BASEDIR=$(cd "$BASEDIR" ; pwd -P)
+
+# Remove XCode SDK from path. Otherwise this breaks tool compilation when building iOS project
+NEW_PATH=`echo $PATH | tr ":" "\n" | grep -v "Contents/Developer/" | tr "\n" ":"`
+
+export PATH=${NEW_PATH%?} # remove trailing :
+
+env
+
+# Platform name (macosx, iphoneos, iphonesimulator)
+export CARGOKIT_DARWIN_PLATFORM_NAME=$PLATFORM_NAME
+
+# Arctive architectures (arm64, armv7, x86_64), space separated.
+export CARGOKIT_DARWIN_ARCHS=$ARCHS
+
+# Current build configuration (Debug, Release)
+export CARGOKIT_CONFIGURATION=$CONFIGURATION
+
+# Path to directory containing Cargo.toml.
+export CARGOKIT_MANIFEST_DIR=$PODS_TARGET_SRCROOT/$1
+
+# Temporary directory for build artifacts.
+export CARGOKIT_TARGET_TEMP_DIR=$TARGET_TEMP_DIR
+
+# Output directory for final artifacts.
+export CARGOKIT_OUTPUT_DIR=$PODS_CONFIGURATION_BUILD_DIR/$PRODUCT_NAME
+
+# Directory to store built tool artifacts.
+export CARGOKIT_TOOL_TEMP_DIR=$TARGET_TEMP_DIR/build_tool
+
+# Directory inside root project. Not necessarily the top level directory of root project.
+export CARGOKIT_ROOT_PROJECT_DIR=$SRCROOT
+
+FLUTTER_EXPORT_BUILD_ENVIRONMENT=(
+  "$PODS_ROOT/../Flutter/ephemeral/flutter_export_environment.sh" # macOS
+  "$PODS_ROOT/../Flutter/flutter_export_environment.sh" # iOS
+)
+
+for path in "${FLUTTER_EXPORT_BUILD_ENVIRONMENT[@]}"
+do
+  if [[ -f "$path" ]]; then
+    source "$path"
+  fi
+done
+
+sh "$BASEDIR/run_build_tool.sh" build-pod "$@"
+
+# Make a symlink from built framework to phony file, which will be used as input to
+# build script. This should force rebuild (podspec currently doesn't support alwaysOutOfDate
+# attribute on custom build phase)
+ln -fs "$OBJROOT/XCBuildData/build.db" "${BUILT_PRODUCTS_DIR}/cargokit_phony"
+ln -fs "${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}" "${BUILT_PRODUCTS_DIR}/cargokit_phony_out"

mobile/apps/photos/rust_builder/cargokit/build_tool/README.md

@@ -0,0 +1,5 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+A sample command-line application with an entrypoint in `bin/`, library code
+in `lib/`, and example unit test in `test/`.

mobile/apps/photos/rust_builder/cargokit/build_tool/analysis_options.yaml

@@ -0,0 +1,34 @@
+# This is copied from Cargokit (which is the official way to use it currently)
+# Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+linter:
+  rules:
+    - prefer_relative_imports
+    - directives_ordering
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

mobile/apps/photos/rust_builder/cargokit/build_tool/bin/build_tool.dart

@@ -0,0 +1,8 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'package:build_tool/build_tool.dart' as build_tool;
+
+void main(List<String> arguments) {
+  build_tool.runMain(arguments);
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/build_tool.dart

@@ -0,0 +1,8 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'src/build_tool.dart' as build_tool;
+
+Future<void> runMain(List<String> args) async {
+  return build_tool.runMain(args);
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/android_environment.dart

@@ -0,0 +1,195 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+import 'dart:isolate';
+import 'dart:math' as math;
+
+import 'package:collection/collection.dart';
+import 'package:path/path.dart' as path;
+import 'package:version/version.dart';
+
+import 'target.dart';
+import 'util.dart';
+
+class AndroidEnvironment {
+  AndroidEnvironment({
+    required this.sdkPath,
+    required this.ndkVersion,
+    required this.minSdkVersion,
+    required this.targetTempDir,
+    required this.target,
+  });
+
+  static void clangLinkerWrapper(List<String> args) {
+    final clang = Platform.environment['_CARGOKIT_NDK_LINK_CLANG'];
+    if (clang == null) {
+      throw Exception(
+          "cargo-ndk rustc linker: didn't find _CARGOKIT_NDK_LINK_CLANG env var");
+    }
+    final target = Platform.environment['_CARGOKIT_NDK_LINK_TARGET'];
+    if (target == null) {
+      throw Exception(
+          "cargo-ndk rustc linker: didn't find _CARGOKIT_NDK_LINK_TARGET env var");
+    }
+
+    runCommand(clang, [
+      target,
+      ...args,
+    ]);
+  }
+
+  /// Full path to Android SDK.
+  final String sdkPath;
+
+  /// Full version of Android NDK.
+  final String ndkVersion;
+
+  /// Minimum supported SDK version.
+  final int minSdkVersion;
+
+  /// Target directory for build artifacts.
+  final String targetTempDir;
+
+  /// Target being built.
+  final Target target;
+
+  bool ndkIsInstalled() {
+    final ndkPath = path.join(sdkPath, 'ndk', ndkVersion);
+    final ndkPackageXml = File(path.join(ndkPath, 'package.xml'));
+    return ndkPackageXml.existsSync();
+  }
+
+  void installNdk({
+    required String javaHome,
+  }) {
+    final sdkManagerExtension = Platform.isWindows ? '.bat' : '';
+    final sdkManager = path.join(
+      sdkPath,
+      'cmdline-tools',
+      'latest',
+      'bin',
+      'sdkmanager$sdkManagerExtension',
+    );
+
+    log.info('Installing NDK $ndkVersion');
+    runCommand(sdkManager, [
+      '--install',
+      'ndk;$ndkVersion',
+    ], environment: {
+      'JAVA_HOME': javaHome,
+    });
+  }
+
+  Future<Map<String, String>> buildEnvironment() async {
+    final hostArch = Platform.isMacOS
+        ? "darwin-x86_64"
+        : (Platform.isLinux ? "linux-x86_64" : "windows-x86_64");
+
+    final ndkPath = path.join(sdkPath, 'ndk', ndkVersion);
+    final toolchainPath = path.join(
+      ndkPath,
+      'toolchains',
+      'llvm',
+      'prebuilt',
+      hostArch,
+      'bin',
+    );
+
+    final minSdkVersion =
+        math.max(target.androidMinSdkVersion!, this.minSdkVersion);
+
+    final exe = Platform.isWindows ? '.exe' : '';
+
+    final arKey = 'AR_${target.rust}';
+    final arValue = ['${target.rust}-ar', 'llvm-ar', 'llvm-ar.exe']
+        .map((e) => path.join(toolchainPath, e))
+        .firstWhereOrNull((element) => File(element).existsSync());
+    if (arValue == null) {
+      throw Exception('Failed to find ar for $target in $toolchainPath');
+    }
+
+    final targetArg = '--target=${target.rust}$minSdkVersion';
+
+    final ccKey = 'CC_${target.rust}';
+    final ccValue = path.join(toolchainPath, 'clang$exe');
+    final cfFlagsKey = 'CFLAGS_${target.rust}';
+    final cFlagsValue = targetArg;
+
+    final cxxKey = 'CXX_${target.rust}';
+    final cxxValue = path.join(toolchainPath, 'clang++$exe');
+    final cxxFlagsKey = 'CXXFLAGS_${target.rust}';
+    final cxxFlagsValue = targetArg;
+
+    final linkerKey =
+        'cargo_target_${target.rust.replaceAll('-', '_')}_linker'.toUpperCase();
+
+    final ranlibKey = 'RANLIB_${target.rust}';
+    final ranlibValue = path.join(toolchainPath, 'llvm-ranlib$exe');
+
+    final ndkVersionParsed = Version.parse(ndkVersion);
+    final rustFlagsKey = 'CARGO_ENCODED_RUSTFLAGS';
+    final rustFlagsValue = _libGccWorkaround(targetTempDir, ndkVersionParsed);
+
+    final runRustTool =
+        Platform.isWindows ? 'run_build_tool.cmd' : 'run_build_tool.sh';
+
+    final packagePath = (await Isolate.resolvePackageUri(
+            Uri.parse('package:build_tool/buildtool.dart')))!
+        .toFilePath();
+    final selfPath = path.canonicalize(path.join(
+      packagePath,
+      '..',
+      '..',
+      '..',
+      runRustTool,
+    ));
+
+    // Make sure that run_build_tool is working properly even initially launched directly
+    // through dart run.
+    final toolTempDir =
+        Platform.environment['CARGOKIT_TOOL_TEMP_DIR'] ?? targetTempDir;
+
+    return {
+      arKey: arValue,
+      ccKey: ccValue,
+      cfFlagsKey: cFlagsValue,
+      cxxKey: cxxValue,
+      cxxFlagsKey: cxxFlagsValue,
+      ranlibKey: ranlibValue,
+      rustFlagsKey: rustFlagsValue,
+      linkerKey: selfPath,
+      // Recognized by main() so we know when we're acting as a wrapper
+      '_CARGOKIT_NDK_LINK_TARGET': targetArg,
+      '_CARGOKIT_NDK_LINK_CLANG': ccValue,
+      'CARGOKIT_TOOL_TEMP_DIR': toolTempDir,
+    };
+  }
+
+  // Workaround for libgcc missing in NDK23, inspired by cargo-ndk
+  String _libGccWorkaround(String buildDir, Version ndkVersion) {
+    final workaroundDir = path.join(
+      buildDir,
+      'cargokit',
+      'libgcc_workaround',
+      '${ndkVersion.major}',
+    );
+    Directory(workaroundDir).createSync(recursive: true);
+    if (ndkVersion.major >= 23) {
+      File(path.join(workaroundDir, 'libgcc.a'))
+          .writeAsStringSync('INPUT(-lunwind)');
+    } else {
+      // Other way around, untested, forward libgcc.a from libunwind once Rust
+      // gets updated for NDK23+.
+      File(path.join(workaroundDir, 'libunwind.a'))
+          .writeAsStringSync('INPUT(-lgcc)');
+    }
+
+    var rustFlags = Platform.environment['CARGO_ENCODED_RUSTFLAGS'] ?? '';
+    if (rustFlags.isNotEmpty) {
+      rustFlags = '$rustFlags\x1f';
+    }
+    rustFlags = '$rustFlags-L\x1f$workaroundDir';
+    return rustFlags;
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/artifacts_provider.dart

@@ -0,0 +1,266 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:ed25519_edwards/ed25519_edwards.dart';
+import 'package:http/http.dart';
+import 'package:logging/logging.dart';
+import 'package:path/path.dart' as path;
+
+import 'builder.dart';
+import 'crate_hash.dart';
+import 'options.dart';
+import 'precompile_binaries.dart';
+import 'rustup.dart';
+import 'target.dart';
+
+class Artifact {
+  /// File system location of the artifact.
+  final String path;
+
+  /// Actual file name that the artifact should have in destination folder.
+  final String finalFileName;
+
+  AritifactType get type {
+    if (finalFileName.endsWith('.dll') ||
+        finalFileName.endsWith('.dll.lib') ||
+        finalFileName.endsWith('.pdb') ||
+        finalFileName.endsWith('.so') ||
+        finalFileName.endsWith('.dylib')) {
+      return AritifactType.dylib;
+    } else if (finalFileName.endsWith('.lib') || finalFileName.endsWith('.a')) {
+      return AritifactType.staticlib;
+    } else {
+      throw Exception('Unknown artifact type for $finalFileName');
+    }
+  }
+
+  Artifact({
+    required this.path,
+    required this.finalFileName,
+  });
+}
+
+final _log = Logger('artifacts_provider');
+
+class ArtifactProvider {
+  ArtifactProvider({
+    required this.environment,
+    required this.userOptions,
+  });
+
+  final BuildEnvironment environment;
+  final CargokitUserOptions userOptions;
+
+  Future<Map<Target, List<Artifact>>> getArtifacts(List<Target> targets) async {
+    final result = await _getPrecompiledArtifacts(targets);
+
+    final pendingTargets = List.of(targets);
+    pendingTargets.removeWhere((element) => result.containsKey(element));
+
+    if (pendingTargets.isEmpty) {
+      return result;
+    }
+
+    final rustup = Rustup();
+    for (final target in targets) {
+      final builder = RustBuilder(target: target, environment: environment);
+      builder.prepare(rustup);
+      _log.info('Building ${environment.crateInfo.packageName} for $target');
+      final targetDir = await builder.build();
+      // For local build accept both static and dynamic libraries.
+      final artifactNames = <String>{
+        ...getArtifactNames(
+          target: target,
+          libraryName: environment.crateInfo.packageName,
+          aritifactType: AritifactType.dylib,
+          remote: false,
+        ),
+        ...getArtifactNames(
+          target: target,
+          libraryName: environment.crateInfo.packageName,
+          aritifactType: AritifactType.staticlib,
+          remote: false,
+        )
+      };
+      final artifacts = artifactNames
+          .map((artifactName) => Artifact(
+                path: path.join(targetDir, artifactName),
+                finalFileName: artifactName,
+              ))
+          .where((element) => File(element.path).existsSync())
+          .toList();
+      result[target] = artifacts;
+    }
+    return result;
+  }
+
+  Future<Map<Target, List<Artifact>>> _getPrecompiledArtifacts(
+      List<Target> targets) async {
+    if (userOptions.usePrecompiledBinaries == false) {
+      _log.info('Precompiled binaries are disabled');
+      return {};
+    }
+    if (environment.crateOptions.precompiledBinaries == null) {
+      _log.fine('Precompiled binaries not enabled for this crate');
+      return {};
+    }
+
+    final start = Stopwatch()..start();
+    final crateHash = CrateHash.compute(environment.manifestDir,
+        tempStorage: environment.targetTempDir);
+    _log.fine(
+        'Computed crate hash $crateHash in ${start.elapsedMilliseconds}ms');
+
+    final downloadedArtifactsDir =
+        path.join(environment.targetTempDir, 'precompiled', crateHash);
+    Directory(downloadedArtifactsDir).createSync(recursive: true);
+
+    final res = <Target, List<Artifact>>{};
+
+    for (final target in targets) {
+      final requiredArtifacts = getArtifactNames(
+        target: target,
+        libraryName: environment.crateInfo.packageName,
+        remote: true,
+      );
+      final artifactsForTarget = <Artifact>[];
+
+      for (final artifact in requiredArtifacts) {
+        final fileName = PrecompileBinaries.fileName(target, artifact);
+        final downloadedPath = path.join(downloadedArtifactsDir, fileName);
+        if (!File(downloadedPath).existsSync()) {
+          final signatureFileName =
+              PrecompileBinaries.signatureFileName(target, artifact);
+          await _tryDownloadArtifacts(
+            crateHash: crateHash,
+            fileName: fileName,
+            signatureFileName: signatureFileName,
+            finalPath: downloadedPath,
+          );
+        }
+        if (File(downloadedPath).existsSync()) {
+          artifactsForTarget.add(Artifact(
+            path: downloadedPath,
+            finalFileName: artifact,
+          ));
+        } else {
+          break;
+        }
+      }
+
+      // Only provide complete set of artifacts.
+      if (artifactsForTarget.length == requiredArtifacts.length) {
+        _log.fine('Found precompiled artifacts for $target');
+        res[target] = artifactsForTarget;
+      }
+    }
+
+    return res;
+  }
+
+  static Future<Response> _get(Uri url, {Map<String, String>? headers}) async {
+    int attempt = 0;
+    const maxAttempts = 10;
+    while (true) {
+      try {
+        return await get(url, headers: headers);
+      } on SocketException catch (e) {
+        // Try to detect reset by peer error and retry.
+        if (attempt++ < maxAttempts &&
+            (e.osError?.errorCode == 54 || e.osError?.errorCode == 10054)) {
+          _log.severe(
+              'Failed to download $url: $e, attempt $attempt of $maxAttempts, will retry...');
+          await Future.delayed(Duration(seconds: 1));
+          continue;
+        } else {
+          rethrow;
+        }
+      }
+    }
+  }
+
+  Future<void> _tryDownloadArtifacts({
+    required String crateHash,
+    required String fileName,
+    required String signatureFileName,
+    required String finalPath,
+  }) async {
+    final precompiledBinaries = environment.crateOptions.precompiledBinaries!;
+    final prefix = precompiledBinaries.uriPrefix;
+    final url = Uri.parse('$prefix$crateHash/$fileName');
+    final signatureUrl = Uri.parse('$prefix$crateHash/$signatureFileName');
+    _log.fine('Downloading signature from $signatureUrl');
+    final signature = await _get(signatureUrl);
+    if (signature.statusCode == 404) {
+      _log.warning(
+          'Precompiled binaries not available for crate hash $crateHash ($fileName)');
+      return;
+    }
+    if (signature.statusCode != 200) {
+      _log.severe(
+          'Failed to download signature $signatureUrl: status ${signature.statusCode}');
+      return;
+    }
+    _log.fine('Downloading binary from $url');
+    final res = await _get(url);
+    if (res.statusCode != 200) {
+      _log.severe('Failed to download binary $url: status ${res.statusCode}');
+      return;
+    }
+    if (verify(
+        precompiledBinaries.publicKey, res.bodyBytes, signature.bodyBytes)) {
+      File(finalPath).writeAsBytesSync(res.bodyBytes);
+    } else {
+      _log.shout('Signature verification failed! Ignoring binary.');
+    }
+  }
+}
+
+enum AritifactType {
+  staticlib,
+  dylib,
+}
+
+AritifactType artifactTypeForTarget(Target target) {
+  if (target.darwinPlatform != null) {
+    return AritifactType.staticlib;
+  } else {
+    return AritifactType.dylib;
+  }
+}
+
+List<String> getArtifactNames({
+  required Target target,
+  required String libraryName,
+  required bool remote,
+  AritifactType? aritifactType,
+}) {
+  aritifactType ??= artifactTypeForTarget(target);
+  if (target.darwinArch != null) {
+    if (aritifactType == AritifactType.staticlib) {
+      return ['lib$libraryName.a'];
+    } else {
+      return ['lib$libraryName.dylib'];
+    }
+  } else if (target.rust.contains('-windows-')) {
+    if (aritifactType == AritifactType.staticlib) {
+      return ['$libraryName.lib'];
+    } else {
+      return [
+        '$libraryName.dll',
+        '$libraryName.dll.lib',
+        if (!remote) '$libraryName.pdb'
+      ];
+    }
+  } else if (target.rust.contains('-linux-')) {
+    if (aritifactType == AritifactType.staticlib) {
+      return ['lib$libraryName.a'];
+    } else {
+      return ['lib$libraryName.so'];
+    }
+  } else {
+    throw Exception("Unsupported target: ${target.rust}");
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/build_cmake.dart

@@ -0,0 +1,40 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:path/path.dart' as path;
+
+import 'artifacts_provider.dart';
+import 'builder.dart';
+import 'environment.dart';
+import 'options.dart';
+import 'target.dart';
+
+class BuildCMake {
+  final CargokitUserOptions userOptions;
+
+  BuildCMake({required this.userOptions});
+
+  Future<void> build() async {
+    final targetPlatform = Environment.targetPlatform;
+    final target = Target.forFlutterName(Environment.targetPlatform);
+    if (target == null) {
+      throw Exception("Unknown target platform: $targetPlatform");
+    }
+
+    final environment = BuildEnvironment.fromEnvironment(isAndroid: false);
+    final provider =
+        ArtifactProvider(environment: environment, userOptions: userOptions);
+    final artifacts = await provider.getArtifacts([target]);
+
+    final libs = artifacts[target]!;
+
+    for (final lib in libs) {
+      if (lib.type == AritifactType.dylib) {
+        File(lib.path)
+            .copySync(path.join(Environment.outputDir, lib.finalFileName));
+      }
+    }
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/build_gradle.dart

@@ -0,0 +1,49 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:logging/logging.dart';
+import 'package:path/path.dart' as path;
+
+import 'artifacts_provider.dart';
+import 'builder.dart';
+import 'environment.dart';
+import 'options.dart';
+import 'target.dart';
+
+final log = Logger('build_gradle');
+
+class BuildGradle {
+  BuildGradle({required this.userOptions});
+
+  final CargokitUserOptions userOptions;
+
+  Future<void> build() async {
+    final targets = Environment.targetPlatforms.map((arch) {
+      final target = Target.forFlutterName(arch);
+      if (target == null) {
+        throw Exception(
+            "Unknown darwin target or platform: $arch, ${Environment.darwinPlatformName}");
+      }
+      return target;
+    }).toList();
+
+    final environment = BuildEnvironment.fromEnvironment(isAndroid: true);
+    final provider =
+        ArtifactProvider(environment: environment, userOptions: userOptions);
+    final artifacts = await provider.getArtifacts(targets);
+
+    for (final target in targets) {
+      final libs = artifacts[target]!;
+      final outputDir = path.join(Environment.outputDir, target.android!);
+      Directory(outputDir).createSync(recursive: true);
+
+      for (final lib in libs) {
+        if (lib.type == AritifactType.dylib) {
+          File(lib.path).copySync(path.join(outputDir, lib.finalFileName));
+        }
+      }
+    }
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/build_pod.dart

@@ -0,0 +1,89 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:path/path.dart' as path;
+
+import 'artifacts_provider.dart';
+import 'builder.dart';
+import 'environment.dart';
+import 'options.dart';
+import 'target.dart';
+import 'util.dart';
+
+class BuildPod {
+  BuildPod({required this.userOptions});
+
+  final CargokitUserOptions userOptions;
+
+  Future<void> build() async {
+    final targets = Environment.darwinArchs.map((arch) {
+      final target = Target.forDarwin(
+          platformName: Environment.darwinPlatformName, darwinAarch: arch);
+      if (target == null) {
+        throw Exception(
+            "Unknown darwin target or platform: $arch, ${Environment.darwinPlatformName}");
+      }
+      return target;
+    }).toList();
+
+    final environment = BuildEnvironment.fromEnvironment(isAndroid: false);
+    final provider =
+        ArtifactProvider(environment: environment, userOptions: userOptions);
+    final artifacts = await provider.getArtifacts(targets);
+
+    void performLipo(String targetFile, Iterable<String> sourceFiles) {
+      runCommand("lipo", [
+        '-create',
+        ...sourceFiles,
+        '-output',
+        targetFile,
+      ]);
+    }
+
+    final outputDir = Environment.outputDir;
+
+    Directory(outputDir).createSync(recursive: true);
+
+    final staticLibs = artifacts.values
+        .expand((element) => element)
+        .where((element) => element.type == AritifactType.staticlib)
+        .toList();
+    final dynamicLibs = artifacts.values
+        .expand((element) => element)
+        .where((element) => element.type == AritifactType.dylib)
+        .toList();
+
+    final libName = environment.crateInfo.packageName;
+
+    // If there is static lib, use it and link it with pod
+    if (staticLibs.isNotEmpty) {
+      final finalTargetFile = path.join(outputDir, "lib$libName.a");
+      performLipo(finalTargetFile, staticLibs.map((e) => e.path));
+    } else {
+      // Otherwise try to replace bundle dylib with our dylib
+      final bundlePaths = [
+        '$libName.framework/Versions/A/$libName',
+        '$libName.framework/$libName',
+      ];
+
+      for (final bundlePath in bundlePaths) {
+        final targetFile = path.join(outputDir, bundlePath);
+        if (File(targetFile).existsSync()) {
+          performLipo(targetFile, dynamicLibs.map((e) => e.path));
+
+          // Replace absolute id with @rpath one so that it works properly
+          // when moved to Frameworks.
+          runCommand("install_name_tool", [
+            '-id',
+            '@rpath/$bundlePath',
+            targetFile,
+          ]);
+          return;
+        }
+      }
+      throw Exception('Unable to find bundle for dynamic library');
+    }
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/build_tool.dart

@@ -0,0 +1,271 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:args/command_runner.dart';
+import 'package:ed25519_edwards/ed25519_edwards.dart';
+import 'package:github/github.dart';
+import 'package:hex/hex.dart';
+import 'package:logging/logging.dart';
+
+import 'android_environment.dart';
+import 'build_cmake.dart';
+import 'build_gradle.dart';
+import 'build_pod.dart';
+import 'logging.dart';
+import 'options.dart';
+import 'precompile_binaries.dart';
+import 'target.dart';
+import 'util.dart';
+import 'verify_binaries.dart';
+
+final log = Logger('build_tool');
+
+abstract class BuildCommand extends Command {
+  Future<void> runBuildCommand(CargokitUserOptions options);
+
+  @override
+  Future<void> run() async {
+    final options = CargokitUserOptions.load();
+
+    if (options.verboseLogging ||
+        Platform.environment['CARGOKIT_VERBOSE'] == '1') {
+      enableVerboseLogging();
+    }
+
+    await runBuildCommand(options);
+  }
+}
+
+class BuildPodCommand extends BuildCommand {
+  @override
+  final name = 'build-pod';
+
+  @override
+  final description = 'Build cocoa pod library';
+
+  @override
+  Future<void> runBuildCommand(CargokitUserOptions options) async {
+    final build = BuildPod(userOptions: options);
+    await build.build();
+  }
+}
+
+class BuildGradleCommand extends BuildCommand {
+  @override
+  final name = 'build-gradle';
+
+  @override
+  final description = 'Build android library';
+
+  @override
+  Future<void> runBuildCommand(CargokitUserOptions options) async {
+    final build = BuildGradle(userOptions: options);
+    await build.build();
+  }
+}
+
+class BuildCMakeCommand extends BuildCommand {
+  @override
+  final name = 'build-cmake';
+
+  @override
+  final description = 'Build CMake library';
+
+  @override
+  Future<void> runBuildCommand(CargokitUserOptions options) async {
+    final build = BuildCMake(userOptions: options);
+    await build.build();
+  }
+}
+
+class GenKeyCommand extends Command {
+  @override
+  final name = 'gen-key';
+
+  @override
+  final description = 'Generate key pair for signing precompiled binaries';
+
+  @override
+  void run() {
+    final kp = generateKey();
+    final private = HEX.encode(kp.privateKey.bytes);
+    final public = HEX.encode(kp.publicKey.bytes);
+    print("Private Key: $private");
+    print("Public Key: $public");
+  }
+}
+
+class PrecompileBinariesCommand extends Command {
+  PrecompileBinariesCommand() {
+    argParser
+      ..addOption(
+        'repository',
+        mandatory: true,
+        help: 'Github repository slug in format owner/name',
+      )
+      ..addOption(
+        'manifest-dir',
+        mandatory: true,
+        help: 'Directory containing Cargo.toml',
+      )
+      ..addMultiOption('target',
+          help: 'Rust target triple of artifact to build.\n'
+              'Can be specified multiple times or omitted in which case\n'
+              'all targets for current platform will be built.')
+      ..addOption(
+        'android-sdk-location',
+        help: 'Location of Android SDK (if available)',
+      )
+      ..addOption(
+        'android-ndk-version',
+        help: 'Android NDK version (if available)',
+      )
+      ..addOption(
+        'android-min-sdk-version',
+        help: 'Android minimum rquired version (if available)',
+      )
+      ..addOption(
+        'temp-dir',
+        help: 'Directory to store temporary build artifacts',
+      )
+      ..addFlag(
+        "verbose",
+        abbr: "v",
+        defaultsTo: false,
+        help: "Enable verbose logging",
+      );
+  }
+
+  @override
+  final name = 'precompile-binaries';
+
+  @override
+  final description = 'Prebuild and upload binaries\n'
+      'Private key must be passed through PRIVATE_KEY environment variable. '
+      'Use gen_key through generate priave key.\n'
+      'Github token must be passed as GITHUB_TOKEN environment variable.\n';
+
+  @override
+  Future<void> run() async {
+    final verbose = argResults!['verbose'] as bool;
+    if (verbose) {
+      enableVerboseLogging();
+    }
+
+    final privateKeyString = Platform.environment['PRIVATE_KEY'];
+    if (privateKeyString == null) {
+      throw ArgumentError('Missing PRIVATE_KEY environment variable');
+    }
+    final githubToken = Platform.environment['GITHUB_TOKEN'];
+    if (githubToken == null) {
+      throw ArgumentError('Missing GITHUB_TOKEN environment variable');
+    }
+    final privateKey = HEX.decode(privateKeyString);
+    if (privateKey.length != 64) {
+      throw ArgumentError('Private key must be 64 bytes long');
+    }
+    final manifestDir = argResults!['manifest-dir'] as String;
+    if (!Directory(manifestDir).existsSync()) {
+      throw ArgumentError('Manifest directory does not exist: $manifestDir');
+    }
+    String? androidMinSdkVersionString =
+        argResults!['android-min-sdk-version'] as String?;
+    int? androidMinSdkVersion;
+    if (androidMinSdkVersionString != null) {
+      androidMinSdkVersion = int.tryParse(androidMinSdkVersionString);
+      if (androidMinSdkVersion == null) {
+        throw ArgumentError(
+            'Invalid android-min-sdk-version: $androidMinSdkVersionString');
+      }
+    }
+    final targetStrigns = argResults!['target'] as List<String>;
+    final targets = targetStrigns.map((target) {
+      final res = Target.forRustTriple(target);
+      if (res == null) {
+        throw ArgumentError('Invalid target: $target');
+      }
+      return res;
+    }).toList(growable: false);
+    final precompileBinaries = PrecompileBinaries(
+      privateKey: PrivateKey(privateKey),
+      githubToken: githubToken,
+      manifestDir: manifestDir,
+      repositorySlug: RepositorySlug.full(argResults!['repository'] as String),
+      targets: targets,
+      androidSdkLocation: argResults!['android-sdk-location'] as String?,
+      androidNdkVersion: argResults!['android-ndk-version'] as String?,
+      androidMinSdkVersion: androidMinSdkVersion,
+      tempDir: argResults!['temp-dir'] as String?,
+    );
+
+    await precompileBinaries.run();
+  }
+}
+
+class VerifyBinariesCommand extends Command {
+  VerifyBinariesCommand() {
+    argParser.addOption(
+      'manifest-dir',
+      mandatory: true,
+      help: 'Directory containing Cargo.toml',
+    );
+  }
+
+  @override
+  final name = "verify-binaries";
+
+  @override
+  final description = 'Verifies published binaries\n'
+      'Checks whether there is a binary published for each targets\n'
+      'and checks the signature.';
+
+  @override
+  Future<void> run() async {
+    final manifestDir = argResults!['manifest-dir'] as String;
+    final verifyBinaries = VerifyBinaries(
+      manifestDir: manifestDir,
+    );
+    await verifyBinaries.run();
+  }
+}
+
+Future<void> runMain(List<String> args) async {
+  try {
+    // Init logging before options are loaded
+    initLogging();
+
+    if (Platform.environment['_CARGOKIT_NDK_LINK_TARGET'] != null) {
+      return AndroidEnvironment.clangLinkerWrapper(args);
+    }
+
+    final runner = CommandRunner('build_tool', 'Cargokit built_tool')
+      ..addCommand(BuildPodCommand())
+      ..addCommand(BuildGradleCommand())
+      ..addCommand(BuildCMakeCommand())
+      ..addCommand(GenKeyCommand())
+      ..addCommand(PrecompileBinariesCommand())
+      ..addCommand(VerifyBinariesCommand());
+
+    await runner.run(args);
+  } on ArgumentError catch (e) {
+    stderr.writeln(e.toString());
+    exit(1);
+  } catch (e, s) {
+    log.severe(kDoubleSeparator);
+    log.severe('Cargokit BuildTool failed with error:');
+    log.severe(kSeparator);
+    log.severe(e);
+    // This tells user to install Rust, there's no need to pollute the log with
+    // stack trace.
+    if (e is! RustupNotFoundException) {
+      log.severe(kSeparator);
+      log.severe(s);
+      log.severe(kSeparator);
+      log.severe('BuildTool arguments: $args');
+    }
+    log.severe(kDoubleSeparator);
+    exit(1);
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/builder.dart

@@ -0,0 +1,198 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'package:collection/collection.dart';
+import 'package:logging/logging.dart';
+import 'package:path/path.dart' as path;
+
+import 'android_environment.dart';
+import 'cargo.dart';
+import 'environment.dart';
+import 'options.dart';
+import 'rustup.dart';
+import 'target.dart';
+import 'util.dart';
+
+final _log = Logger('builder');
+
+enum BuildConfiguration {
+  debug,
+  release,
+  profile,
+}
+
+extension on BuildConfiguration {
+  bool get isDebug => this == BuildConfiguration.debug;
+  String get rustName => switch (this) {
+        BuildConfiguration.debug => 'debug',
+        BuildConfiguration.release => 'release',
+        BuildConfiguration.profile => 'release',
+      };
+}
+
+class BuildException implements Exception {
+  final String message;
+
+  BuildException(this.message);
+
+  @override
+  String toString() {
+    return 'BuildException: $message';
+  }
+}
+
+class BuildEnvironment {
+  final BuildConfiguration configuration;
+  final CargokitCrateOptions crateOptions;
+  final String targetTempDir;
+  final String manifestDir;
+  final CrateInfo crateInfo;
+
+  final bool isAndroid;
+  final String? androidSdkPath;
+  final String? androidNdkVersion;
+  final int? androidMinSdkVersion;
+  final String? javaHome;
+
+  BuildEnvironment({
+    required this.configuration,
+    required this.crateOptions,
+    required this.targetTempDir,
+    required this.manifestDir,
+    required this.crateInfo,
+    required this.isAndroid,
+    this.androidSdkPath,
+    this.androidNdkVersion,
+    this.androidMinSdkVersion,
+    this.javaHome,
+  });
+
+  static BuildConfiguration parseBuildConfiguration(String value) {
+    // XCode configuration adds the flavor to configuration name.
+    final firstSegment = value.split('-').first;
+    final buildConfiguration = BuildConfiguration.values.firstWhereOrNull(
+      (e) => e.name == firstSegment,
+    );
+    if (buildConfiguration == null) {
+      _log.warning('Unknown build configuraiton $value, will assume release');
+      return BuildConfiguration.release;
+    }
+    return buildConfiguration;
+  }
+
+  static BuildEnvironment fromEnvironment({
+    required bool isAndroid,
+  }) {
+    final buildConfiguration =
+        parseBuildConfiguration(Environment.configuration);
+    final manifestDir = Environment.manifestDir;
+    final crateOptions = CargokitCrateOptions.load(
+      manifestDir: manifestDir,
+    );
+    final crateInfo = CrateInfo.load(manifestDir);
+    return BuildEnvironment(
+      configuration: buildConfiguration,
+      crateOptions: crateOptions,
+      targetTempDir: Environment.targetTempDir,
+      manifestDir: manifestDir,
+      crateInfo: crateInfo,
+      isAndroid: isAndroid,
+      androidSdkPath: isAndroid ? Environment.sdkPath : null,
+      androidNdkVersion: isAndroid ? Environment.ndkVersion : null,
+      androidMinSdkVersion:
+          isAndroid ? int.parse(Environment.minSdkVersion) : null,
+      javaHome: isAndroid ? Environment.javaHome : null,
+    );
+  }
+}
+
+class RustBuilder {
+  final Target target;
+  final BuildEnvironment environment;
+
+  RustBuilder({
+    required this.target,
+    required this.environment,
+  });
+
+  void prepare(
+    Rustup rustup,
+  ) {
+    final toolchain = _toolchain;
+    if (rustup.installedTargets(toolchain) == null) {
+      rustup.installToolchain(toolchain);
+    }
+    if (toolchain == 'nightly') {
+      rustup.installRustSrcForNightly();
+    }
+    if (!rustup.installedTargets(toolchain)!.contains(target.rust)) {
+      rustup.installTarget(target.rust, toolchain: toolchain);
+    }
+  }
+
+  CargoBuildOptions? get _buildOptions =>
+      environment.crateOptions.cargo[environment.configuration];
+
+  String get _toolchain => _buildOptions?.toolchain.name ?? 'stable';
+
+  /// Returns the path of directory containing build artifacts.
+  Future<String> build() async {
+    final extraArgs = _buildOptions?.flags ?? [];
+    final manifestPath = path.join(environment.manifestDir, 'Cargo.toml');
+    runCommand(
+      'rustup',
+      [
+        'run',
+        _toolchain,
+        'cargo',
+        'build',
+        ...extraArgs,
+        '--manifest-path',
+        manifestPath,
+        '-p',
+        environment.crateInfo.packageName,
+        if (!environment.configuration.isDebug) '--release',
+        '--target',
+        target.rust,
+        '--target-dir',
+        environment.targetTempDir,
+      ],
+      environment: await _buildEnvironment(),
+    );
+    return path.join(
+      environment.targetTempDir,
+      target.rust,
+      environment.configuration.rustName,
+    );
+  }
+
+  Future<Map<String, String>> _buildEnvironment() async {
+    if (target.android == null) {
+      return {};
+    } else {
+      final sdkPath = environment.androidSdkPath;
+      final ndkVersion = environment.androidNdkVersion;
+      final minSdkVersion = environment.androidMinSdkVersion;
+      if (sdkPath == null) {
+        throw BuildException('androidSdkPath is not set');
+      }
+      if (ndkVersion == null) {
+        throw BuildException('androidNdkVersion is not set');
+      }
+      if (minSdkVersion == null) {
+        throw BuildException('androidMinSdkVersion is not set');
+      }
+      final env = AndroidEnvironment(
+        sdkPath: sdkPath,
+        ndkVersion: ndkVersion,
+        minSdkVersion: minSdkVersion,
+        targetTempDir: environment.targetTempDir,
+        target: target,
+      );
+      if (!env.ndkIsInstalled() && environment.javaHome != null) {
+        env.installNdk(javaHome: environment.javaHome!);
+      }
+      return env.buildEnvironment();
+    }
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/cargo.dart

@@ -0,0 +1,48 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:path/path.dart' as path;
+import 'package:toml/toml.dart';
+
+class ManifestException {
+  ManifestException(this.message, {required this.fileName});
+
+  final String? fileName;
+  final String message;
+
+  @override
+  String toString() {
+    if (fileName != null) {
+      return 'Failed to parse package manifest at $fileName: $message';
+    } else {
+      return 'Failed to parse package manifest: $message';
+    }
+  }
+}
+
+class CrateInfo {
+  CrateInfo({required this.packageName});
+
+  final String packageName;
+
+  static CrateInfo parseManifest(String manifest, {final String? fileName}) {
+    final toml = TomlDocument.parse(manifest);
+    final package = toml.toMap()['package'];
+    if (package == null) {
+      throw ManifestException('Missing package section', fileName: fileName);
+    }
+    final name = package['name'];
+    if (name == null) {
+      throw ManifestException('Missing package name', fileName: fileName);
+    }
+    return CrateInfo(packageName: name);
+  }
+
+  static CrateInfo load(String manifestDir) {
+    final manifestFile = File(path.join(manifestDir, 'Cargo.toml'));
+    final manifest = manifestFile.readAsStringSync();
+    return parseManifest(manifest, fileName: manifestFile.path);
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/crate_hash.dart

@@ -0,0 +1,124 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:convert';
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:collection/collection.dart';
+import 'package:convert/convert.dart';
+import 'package:crypto/crypto.dart';
+import 'package:path/path.dart' as path;
+
+class CrateHash {
+  /// Computes a hash uniquely identifying crate content. This takes into account
+  /// content all all .rs files inside the src directory, as well as Cargo.toml,
+  /// Cargo.lock, build.rs and cargokit.yaml.
+  ///
+  /// If [tempStorage] is provided, computed hash is stored in a file in that directory
+  /// and reused on subsequent calls if the crate content hasn't changed.
+  static String compute(String manifestDir, {String? tempStorage}) {
+    return CrateHash._(
+      manifestDir: manifestDir,
+      tempStorage: tempStorage,
+    )._compute();
+  }
+
+  CrateHash._({
+    required this.manifestDir,
+    required this.tempStorage,
+  });
+
+  String _compute() {
+    final files = getFiles();
+    final tempStorage = this.tempStorage;
+    if (tempStorage != null) {
+      final quickHash = _computeQuickHash(files);
+      final quickHashFolder = Directory(path.join(tempStorage, 'crate_hash'));
+      quickHashFolder.createSync(recursive: true);
+      final quickHashFile = File(path.join(quickHashFolder.path, quickHash));
+      if (quickHashFile.existsSync()) {
+        return quickHashFile.readAsStringSync();
+      }
+      final hash = _computeHash(files);
+      quickHashFile.writeAsStringSync(hash);
+      return hash;
+    } else {
+      return _computeHash(files);
+    }
+  }
+
+  /// Computes a quick hash based on files stat (without reading contents). This
+  /// is used to cache the real hash, which is slower to compute since it involves
+  /// reading every single file.
+  String _computeQuickHash(List<File> files) {
+    final output = AccumulatorSink<Digest>();
+    final input = sha256.startChunkedConversion(output);
+
+    final data = ByteData(8);
+    for (final file in files) {
+      input.add(utf8.encode(file.path));
+      final stat = file.statSync();
+      data.setUint64(0, stat.size);
+      input.add(data.buffer.asUint8List());
+      data.setUint64(0, stat.modified.millisecondsSinceEpoch);
+      input.add(data.buffer.asUint8List());
+    }
+
+    input.close();
+    return base64Url.encode(output.events.single.bytes);
+  }
+
+  String _computeHash(List<File> files) {
+    final output = AccumulatorSink<Digest>();
+    final input = sha256.startChunkedConversion(output);
+
+    void addTextFile(File file) {
+      // text Files are hashed by lines in case we're dealing with github checkout
+      // that auto-converts line endings.
+      final splitter = LineSplitter();
+      if (file.existsSync()) {
+        final data = file.readAsStringSync();
+        final lines = splitter.convert(data);
+        for (final line in lines) {
+          input.add(utf8.encode(line));
+        }
+      }
+    }
+
+    for (final file in files) {
+      addTextFile(file);
+    }
+
+    input.close();
+    final res = output.events.single;
+
+    // Truncate to 128bits.
+    final hash = res.bytes.sublist(0, 16);
+    return hex.encode(hash);
+  }
+
+  List<File> getFiles() {
+    final src = Directory(path.join(manifestDir, 'src'));
+    final files = src
+        .listSync(recursive: true, followLinks: false)
+        .whereType<File>()
+        .toList();
+    files.sortBy((element) => element.path);
+    void addFile(String relative) {
+      final file = File(path.join(manifestDir, relative));
+      if (file.existsSync()) {
+        files.add(file);
+      }
+    }
+
+    addFile('Cargo.toml');
+    addFile('Cargo.lock');
+    addFile('build.rs');
+    addFile('cargokit.yaml');
+    return files;
+  }
+
+  final String manifestDir;
+  final String? tempStorage;
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/environment.dart

@@ -0,0 +1,68 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+extension on String {
+  String resolveSymlink() => File(this).resolveSymbolicLinksSync();
+}
+
+class Environment {
+  /// Current build configuration (debug or release).
+  static String get configuration =>
+      _getEnv("CARGOKIT_CONFIGURATION").toLowerCase();
+
+  static bool get isDebug => configuration == 'debug';
+  static bool get isRelease => configuration == 'release';
+
+  /// Temporary directory where Rust build artifacts are placed.
+  static String get targetTempDir => _getEnv("CARGOKIT_TARGET_TEMP_DIR");
+
+  /// Final output directory where the build artifacts are placed.
+  static String get outputDir => _getEnvPath('CARGOKIT_OUTPUT_DIR');
+
+  /// Path to the crate manifest (containing Cargo.toml).
+  static String get manifestDir => _getEnvPath('CARGOKIT_MANIFEST_DIR');
+
+  /// Directory inside root project. Not necessarily root folder. Symlinks are
+  /// not resolved on purpose.
+  static String get rootProjectDir => _getEnv('CARGOKIT_ROOT_PROJECT_DIR');
+
+  // Pod
+
+  /// Platform name (macosx, iphoneos, iphonesimulator).
+  static String get darwinPlatformName =>
+      _getEnv("CARGOKIT_DARWIN_PLATFORM_NAME");
+
+  /// List of architectures to build for (arm64, armv7, x86_64).
+  static List<String> get darwinArchs =>
+      _getEnv("CARGOKIT_DARWIN_ARCHS").split(' ');
+
+  // Gradle
+  static String get minSdkVersion => _getEnv("CARGOKIT_MIN_SDK_VERSION");
+  static String get ndkVersion => _getEnv("CARGOKIT_NDK_VERSION");
+  static String get sdkPath => _getEnvPath("CARGOKIT_SDK_DIR");
+  static String get javaHome => _getEnvPath("CARGOKIT_JAVA_HOME");
+  static List<String> get targetPlatforms =>
+      _getEnv("CARGOKIT_TARGET_PLATFORMS").split(',');
+
+  // CMAKE
+  static String get targetPlatform => _getEnv("CARGOKIT_TARGET_PLATFORM");
+
+  static String _getEnv(String key) {
+    final res = Platform.environment[key];
+    if (res == null) {
+      throw Exception("Missing environment variable $key");
+    }
+    return res;
+  }
+
+  static String _getEnvPath(String key) {
+    final res = _getEnv(key);
+    if (Directory(res).existsSync()) {
+      return res.resolveSymlink();
+    } else {
+      return res;
+    }
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/logging.dart

@@ -0,0 +1,52 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:logging/logging.dart';
+
+const String kSeparator = "--";
+const String kDoubleSeparator = "==";
+
+bool _lastMessageWasSeparator = false;
+
+void _log(LogRecord rec) {
+  final prefix = '${rec.level.name}: ';
+  final out = rec.level == Level.SEVERE ? stderr : stdout;
+  if (rec.message == kSeparator) {
+    if (!_lastMessageWasSeparator) {
+      out.write(prefix);
+      out.writeln('-' * 80);
+      _lastMessageWasSeparator = true;
+    }
+    return;
+  } else if (rec.message == kDoubleSeparator) {
+    out.write(prefix);
+    out.writeln('=' * 80);
+    _lastMessageWasSeparator = true;
+    return;
+  }
+  out.write(prefix);
+  out.writeln(rec.message);
+  _lastMessageWasSeparator = false;
+}
+
+void initLogging() {
+  Logger.root.level = Level.INFO;
+  Logger.root.onRecord.listen((LogRecord rec) {
+    final lines = rec.message.split('\n');
+    for (final line in lines) {
+      if (line.isNotEmpty || lines.length == 1 || line != lines.last) {
+        _log(LogRecord(
+          rec.level,
+          line,
+          rec.loggerName,
+        ));
+      }
+    }
+  });
+}
+
+void enableVerboseLogging() {
+  Logger.root.level = Level.ALL;
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/options.dart

@@ -0,0 +1,309 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:collection/collection.dart';
+import 'package:ed25519_edwards/ed25519_edwards.dart';
+import 'package:hex/hex.dart';
+import 'package:logging/logging.dart';
+import 'package:path/path.dart' as path;
+import 'package:source_span/source_span.dart';
+import 'package:yaml/yaml.dart';
+
+import 'builder.dart';
+import 'environment.dart';
+import 'rustup.dart';
+
+final _log = Logger('options');
+
+/// A class for exceptions that have source span information attached.
+class SourceSpanException implements Exception {
+  // This is a getter so that subclasses can override it.
+  /// A message describing the exception.
+  String get message => _message;
+  final String _message;
+
+  // This is a getter so that subclasses can override it.
+  /// The span associated with this exception.
+  ///
+  /// This may be `null` if the source location can't be determined.
+  SourceSpan? get span => _span;
+  final SourceSpan? _span;
+
+  SourceSpanException(this._message, this._span);
+
+  /// Returns a string representation of `this`.
+  ///
+  /// [color] may either be a [String], a [bool], or `null`. If it's a string,
+  /// it indicates an ANSI terminal color escape that should be used to
+  /// highlight the span's text. If it's `true`, it indicates that the text
+  /// should be highlighted using the default color. If it's `false` or `null`,
+  /// it indicates that the text shouldn't be highlighted.
+  @override
+  String toString({Object? color}) {
+    if (span == null) return message;
+    return 'Error on ${span!.message(message, color: color)}';
+  }
+}
+
+enum Toolchain {
+  stable,
+  beta,
+  nightly,
+}
+
+class CargoBuildOptions {
+  final Toolchain toolchain;
+  final List<String> flags;
+
+  CargoBuildOptions({
+    required this.toolchain,
+    required this.flags,
+  });
+
+  static Toolchain _toolchainFromNode(YamlNode node) {
+    if (node case YamlScalar(value: String name)) {
+      final toolchain =
+          Toolchain.values.firstWhereOrNull((element) => element.name == name);
+      if (toolchain != null) {
+        return toolchain;
+      }
+    }
+    throw SourceSpanException(
+        'Unknown toolchain. Must be one of ${Toolchain.values.map((e) => e.name)}.',
+        node.span);
+  }
+
+  static CargoBuildOptions parse(YamlNode node) {
+    if (node is! YamlMap) {
+      throw SourceSpanException('Cargo options must be a map', node.span);
+    }
+    Toolchain toolchain = Toolchain.stable;
+    List<String> flags = [];
+    for (final MapEntry(:key, :value) in node.nodes.entries) {
+      if (key case YamlScalar(value: 'toolchain')) {
+        toolchain = _toolchainFromNode(value);
+      } else if (key case YamlScalar(value: 'extra_flags')) {
+        if (value case YamlList(nodes: List<YamlNode> list)) {
+          if (list.every((element) {
+            if (element case YamlScalar(value: String _)) {
+              return true;
+            }
+            return false;
+          })) {
+            flags = list.map((e) => e.value as String).toList();
+            continue;
+          }
+        }
+        throw SourceSpanException(
+            'Extra flags must be a list of strings', value.span);
+      } else {
+        throw SourceSpanException(
+            'Unknown cargo option type. Must be "toolchain" or "extra_flags".',
+            key.span);
+      }
+    }
+    return CargoBuildOptions(toolchain: toolchain, flags: flags);
+  }
+}
+
+extension on YamlMap {
+  /// Map that extracts keys so that we can do map case check on them.
+  Map<dynamic, YamlNode> get valueMap =>
+      nodes.map((key, value) => MapEntry(key.value, value));
+}
+
+class PrecompiledBinaries {
+  final String uriPrefix;
+  final PublicKey publicKey;
+
+  PrecompiledBinaries({
+    required this.uriPrefix,
+    required this.publicKey,
+  });
+
+  static PublicKey _publicKeyFromHex(String key, SourceSpan? span) {
+    final bytes = HEX.decode(key);
+    if (bytes.length != 32) {
+      throw SourceSpanException(
+          'Invalid public key. Must be 32 bytes long.', span);
+    }
+    return PublicKey(bytes);
+  }
+
+  static PrecompiledBinaries parse(YamlNode node) {
+    if (node case YamlMap(valueMap: Map<dynamic, YamlNode> map)) {
+      if (map
+          case {
+            'url_prefix': YamlNode urlPrefixNode,
+            'public_key': YamlNode publicKeyNode,
+          }) {
+        final urlPrefix = switch (urlPrefixNode) {
+          YamlScalar(value: String urlPrefix) => urlPrefix,
+          _ => throw SourceSpanException(
+              'Invalid URL prefix value.', urlPrefixNode.span),
+        };
+        final publicKey = switch (publicKeyNode) {
+          YamlScalar(value: String publicKey) =>
+            _publicKeyFromHex(publicKey, publicKeyNode.span),
+          _ => throw SourceSpanException(
+              'Invalid public key value.', publicKeyNode.span),
+        };
+        return PrecompiledBinaries(
+          uriPrefix: urlPrefix,
+          publicKey: publicKey,
+        );
+      }
+    }
+    throw SourceSpanException(
+        'Invalid precompiled binaries value. '
+        'Expected Map with "url_prefix" and "public_key".',
+        node.span);
+  }
+}
+
+/// Cargokit options specified for Rust crate.
+class CargokitCrateOptions {
+  CargokitCrateOptions({
+    this.cargo = const {},
+    this.precompiledBinaries,
+  });
+
+  final Map<BuildConfiguration, CargoBuildOptions> cargo;
+  final PrecompiledBinaries? precompiledBinaries;
+
+  static CargokitCrateOptions parse(YamlNode node) {
+    if (node is! YamlMap) {
+      throw SourceSpanException('Cargokit options must be a map', node.span);
+    }
+    final options = <BuildConfiguration, CargoBuildOptions>{};
+    PrecompiledBinaries? precompiledBinaries;
+
+    for (final entry in node.nodes.entries) {
+      if (entry
+          case MapEntry(
+            key: YamlScalar(value: 'cargo'),
+            value: YamlNode node,
+          )) {
+        if (node is! YamlMap) {
+          throw SourceSpanException('Cargo options must be a map', node.span);
+        }
+        for (final MapEntry(:YamlNode key, :value) in node.nodes.entries) {
+          if (key case YamlScalar(value: String name)) {
+            final configuration = BuildConfiguration.values
+                .firstWhereOrNull((element) => element.name == name);
+            if (configuration != null) {
+              options[configuration] = CargoBuildOptions.parse(value);
+              continue;
+            }
+          }
+          throw SourceSpanException(
+              'Unknown build configuration. Must be one of ${BuildConfiguration.values.map((e) => e.name)}.',
+              key.span);
+        }
+      } else if (entry.key case YamlScalar(value: 'precompiled_binaries')) {
+        precompiledBinaries = PrecompiledBinaries.parse(entry.value);
+      } else {
+        throw SourceSpanException(
+            'Unknown cargokit option type. Must be "cargo" or "precompiled_binaries".',
+            entry.key.span);
+      }
+    }
+    return CargokitCrateOptions(
+      cargo: options,
+      precompiledBinaries: precompiledBinaries,
+    );
+  }
+
+  static CargokitCrateOptions load({
+    required String manifestDir,
+  }) {
+    final uri = Uri.file(path.join(manifestDir, "cargokit.yaml"));
+    final file = File.fromUri(uri);
+    if (file.existsSync()) {
+      final contents = loadYamlNode(file.readAsStringSync(), sourceUrl: uri);
+      return parse(contents);
+    } else {
+      return CargokitCrateOptions();
+    }
+  }
+}
+
+class CargokitUserOptions {
+  // When Rustup is installed always build locally unless user opts into
+  // using precompiled binaries.
+  static bool defaultUsePrecompiledBinaries() {
+    return Rustup.executablePath() == null;
+  }
+
+  CargokitUserOptions({
+    required this.usePrecompiledBinaries,
+    required this.verboseLogging,
+  });
+
+  CargokitUserOptions._()
+      : usePrecompiledBinaries = defaultUsePrecompiledBinaries(),
+        verboseLogging = false;
+
+  static CargokitUserOptions parse(YamlNode node) {
+    if (node is! YamlMap) {
+      throw SourceSpanException('Cargokit options must be a map', node.span);
+    }
+    bool usePrecompiledBinaries = defaultUsePrecompiledBinaries();
+    bool verboseLogging = false;
+
+    for (final entry in node.nodes.entries) {
+      if (entry.key case YamlScalar(value: 'use_precompiled_binaries')) {
+        if (entry.value case YamlScalar(value: bool value)) {
+          usePrecompiledBinaries = value;
+          continue;
+        }
+        throw SourceSpanException(
+            'Invalid value for "use_precompiled_binaries". Must be a boolean.',
+            entry.value.span);
+      } else if (entry.key case YamlScalar(value: 'verbose_logging')) {
+        if (entry.value case YamlScalar(value: bool value)) {
+          verboseLogging = value;
+          continue;
+        }
+        throw SourceSpanException(
+            'Invalid value for "verbose_logging". Must be a boolean.',
+            entry.value.span);
+      } else {
+        throw SourceSpanException(
+            'Unknown cargokit option type. Must be "use_precompiled_binaries" or "verbose_logging".',
+            entry.key.span);
+      }
+    }
+    return CargokitUserOptions(
+      usePrecompiledBinaries: usePrecompiledBinaries,
+      verboseLogging: verboseLogging,
+    );
+  }
+
+  static CargokitUserOptions load() {
+    String fileName = "cargokit_options.yaml";
+    var userProjectDir = Directory(Environment.rootProjectDir);
+
+    while (userProjectDir.parent.path != userProjectDir.path) {
+      final configFile = File(path.join(userProjectDir.path, fileName));
+      if (configFile.existsSync()) {
+        final contents = loadYamlNode(
+          configFile.readAsStringSync(),
+          sourceUrl: configFile.uri,
+        );
+        final res = parse(contents);
+        if (res.verboseLogging) {
+          _log.info('Found user options file at ${configFile.path}');
+        }
+        return res;
+      }
+      userProjectDir = userProjectDir.parent;
+    }
+    return CargokitUserOptions._();
+  }
+
+  final bool usePrecompiledBinaries;
+  final bool verboseLogging;
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/precompile_binaries.dart

@@ -0,0 +1,202 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:ed25519_edwards/ed25519_edwards.dart';
+import 'package:github/github.dart';
+import 'package:logging/logging.dart';
+import 'package:path/path.dart' as path;
+
+import 'artifacts_provider.dart';
+import 'builder.dart';
+import 'cargo.dart';
+import 'crate_hash.dart';
+import 'options.dart';
+import 'rustup.dart';
+import 'target.dart';
+
+final _log = Logger('precompile_binaries');
+
+class PrecompileBinaries {
+  PrecompileBinaries({
+    required this.privateKey,
+    required this.githubToken,
+    required this.repositorySlug,
+    required this.manifestDir,
+    required this.targets,
+    this.androidSdkLocation,
+    this.androidNdkVersion,
+    this.androidMinSdkVersion,
+    this.tempDir,
+  });
+
+  final PrivateKey privateKey;
+  final String githubToken;
+  final RepositorySlug repositorySlug;
+  final String manifestDir;
+  final List<Target> targets;
+  final String? androidSdkLocation;
+  final String? androidNdkVersion;
+  final int? androidMinSdkVersion;
+  final String? tempDir;
+
+  static String fileName(Target target, String name) {
+    return '${target.rust}_$name';
+  }
+
+  static String signatureFileName(Target target, String name) {
+    return '${target.rust}_$name.sig';
+  }
+
+  Future<void> run() async {
+    final crateInfo = CrateInfo.load(manifestDir);
+
+    final targets = List.of(this.targets);
+    if (targets.isEmpty) {
+      targets.addAll([
+        ...Target.buildableTargets(),
+        if (androidSdkLocation != null) ...Target.androidTargets(),
+      ]);
+    }
+
+    _log.info('Precompiling binaries for $targets');
+
+    final hash = CrateHash.compute(manifestDir);
+    _log.info('Computed crate hash: $hash');
+
+    final String tagName = 'precompiled_$hash';
+
+    final github = GitHub(auth: Authentication.withToken(githubToken));
+    final repo = github.repositories;
+    final release = await _getOrCreateRelease(
+      repo: repo,
+      tagName: tagName,
+      packageName: crateInfo.packageName,
+      hash: hash,
+    );
+
+    final tempDir = this.tempDir != null
+        ? Directory(this.tempDir!)
+        : Directory.systemTemp.createTempSync('precompiled_');
+
+    tempDir.createSync(recursive: true);
+
+    final crateOptions = CargokitCrateOptions.load(
+      manifestDir: manifestDir,
+    );
+
+    final buildEnvironment = BuildEnvironment(
+      configuration: BuildConfiguration.release,
+      crateOptions: crateOptions,
+      targetTempDir: tempDir.path,
+      manifestDir: manifestDir,
+      crateInfo: crateInfo,
+      isAndroid: androidSdkLocation != null,
+      androidSdkPath: androidSdkLocation,
+      androidNdkVersion: androidNdkVersion,
+      androidMinSdkVersion: androidMinSdkVersion,
+    );
+
+    final rustup = Rustup();
+
+    for (final target in targets) {
+      final artifactNames = getArtifactNames(
+        target: target,
+        libraryName: crateInfo.packageName,
+        remote: true,
+      );
+
+      if (artifactNames.every((name) {
+        final fileName = PrecompileBinaries.fileName(target, name);
+        return (release.assets ?? []).any((e) => e.name == fileName);
+      })) {
+        _log.info("All artifacts for $target already exist - skipping");
+        continue;
+      }
+
+      _log.info('Building for $target');
+
+      final builder =
+          RustBuilder(target: target, environment: buildEnvironment);
+      builder.prepare(rustup);
+      final res = await builder.build();
+
+      final assets = <CreateReleaseAsset>[];
+      for (final name in artifactNames) {
+        final file = File(path.join(res, name));
+        if (!file.existsSync()) {
+          throw Exception('Missing artifact: ${file.path}');
+        }
+
+        final data = file.readAsBytesSync();
+        final create = CreateReleaseAsset(
+          name: PrecompileBinaries.fileName(target, name),
+          contentType: "application/octet-stream",
+          assetData: data,
+        );
+        final signature = sign(privateKey, data);
+        final signatureCreate = CreateReleaseAsset(
+          name: signatureFileName(target, name),
+          contentType: "application/octet-stream",
+          assetData: signature,
+        );
+        bool verified = verify(public(privateKey), data, signature);
+        if (!verified) {
+          throw Exception('Signature verification failed');
+        }
+        assets.add(create);
+        assets.add(signatureCreate);
+      }
+      _log.info('Uploading assets: ${assets.map((e) => e.name)}');
+      for (final asset in assets) {
+        // This seems to be failing on CI so do it one by one
+        int retryCount = 0;
+        while (true) {
+          try {
+            await repo.uploadReleaseAssets(release, [asset]);
+            break;
+          } on Exception catch (e) {
+            if (retryCount == 10) {
+              rethrow;
+            }
+            ++retryCount;
+            _log.shout(
+                'Upload failed (attempt $retryCount, will retry): ${e.toString()}');
+            await Future.delayed(Duration(seconds: 2));
+          }
+        }
+      }
+    }
+
+    _log.info('Cleaning up');
+    tempDir.deleteSync(recursive: true);
+  }
+
+  Future<Release> _getOrCreateRelease({
+    required RepositoriesService repo,
+    required String tagName,
+    required String packageName,
+    required String hash,
+  }) async {
+    Release release;
+    try {
+      _log.info('Fetching release $tagName');
+      release = await repo.getReleaseByTagName(repositorySlug, tagName);
+    } on ReleaseNotFound {
+      _log.info('Release not found - creating release $tagName');
+      release = await repo.createRelease(
+          repositorySlug,
+          CreateRelease.from(
+            tagName: tagName,
+            name: 'Precompiled binaries ${hash.substring(0, 8)}',
+            targetCommitish: null,
+            isDraft: false,
+            isPrerelease: false,
+            body: 'Precompiled binaries for crate $packageName, '
+                'crate hash $hash.',
+          ));
+    }
+    return release;
+  }
+}

mobile/apps/photos/rust_builder/cargokit/build_tool/lib/src/rustup.dart

@@ -0,0 +1,136 @@
+/// This is copied from Cargokit (which is the official way to use it currently)
+/// Details: https://fzyzcjy.github.io/flutter_rust_bridge/manual/integrate/builtin
+
+import 'dart:io';
+
+import 'package:collection/collection.dart';
+import 'package:path/path.dart' as path;
+
+import 'util.dart';
+
+class _Toolchain {
+  _Toolchain(
+    this.name,
+    this.targets,
+  );
+
+  final String name;
+  final List<String> targets;
+}
+
+class Rustup {
+  List<String>? installedTargets(String toolchain) {
+    final targets = _installedTargets(toolchain);
+    return targets != null ? List.unmodifiable(targets) : null;
+  }
+
+  void installToolchain(String toolchain) {
+    log.info("Installing Rust toolchain: $toolchain");
+    runCommand("rustup", ['toolchain', 'install', toolchain]);
+    _installedToolchains
+        .add(_Toolchain(toolchain, _getInstalledTargets(toolchain)));
+  }
+
+  void installTarget(
+    String target, {
+    required String toolchain,
+  }) {
+    log.info("Installing Rust target: $target");
+    runCommand("rustup", [
+      'target',
+      'add',
+      '--toolchain',
+      toolchain,
+      target,
+    ]);
+    _installedTargets(toolchain)?.add(target);
+  }
+
+  final List<_Toolchain> _installedToolchains;
+
+  Rustup() : _installedToolchains = _getInstalledToolchains();
+
+  List<String>? _installedTargets(String toolchain) => _installedToolchains
+      .firstWhereOrNull(
+          (e) => e.name == toolchain || e.name.startsWith('$toolchain-'))
+      ?.targets;
+
+  static List<_Toolchain> _getInstalledToolchains() {
+    String extractToolchainName(String line) {
+      // ignore (default) after toolchain name
+      final parts = line.split(' ');
+      return parts[0];
+    }
+
+    final res = runCommand("rustup", ['toolchain', 'list']);
+
+    // To list all non-custom toolchains, we need to filter out lines that
+    // don't start with "stable", "beta", or "nightly".
+    Pattern nonCustom = RegExp(r"^(stable|beta|nightly)");
+    final lines = res.stdout
+        .toString()
+        .split('\n')
+        .where((e) => e.isNotEmpty && e.startsWith(nonCustom))
+        .map(extractToolchainName)
+        .toList(growable: true);
+
+    return lines
+        .map(
+          (name) => _Toolchain(
+            name,
+            _getInstalledTargets(name),
+          ),
+        )
+        .toList(growable: true);
+  }
+
+  static List<String> _getInstalledTargets(String toolchain) {
+    final res = runCommand("rustup", [
+      'target',
+      'list',
+      '--toolchain',
+      toolchain,
+      '--installed',
+    ]);
+    final lines = res.stdout
+        .toString()
+        .split('\n')
+        .where((e) => e.isNotEmpty)
+        .toList(growable: true);
+    return lines;
+  }
+
+  bool _didInstallRustSrcForNightly = false;
+
+  void installRustSrcForNightly() {
+    if (_didInstallRustSrcForNightly) {
+      return;
+    }
+    // Useful for -Z build-std
+    runCommand(
+      "rustup",
+      ['component', 'add', 'rust-src', '--toolchain', 'nightly'],
+    );
+    _didInstallRustSrcForNightly = true;
+  }
+
+  static String? executablePath() {
+    final envPath = Platform.environment['PATH'];
+    final envPathSeparator = Platform.isWindows ? ';' : ':';
+    final home = Platform.isWindows
+        ? Platform.environment['USERPROFILE']
+        : Platform.environment['HOME'];
+    final paths = [
+      if (home != null) path.join(home, '.cargo', 'bin'),
+      if (envPath != null) ...envPath.split(envPathSeparator),
+    ];
+    for (final p in paths) {
+      final rustup = Platform.isWindows ? 'rustup.exe' : 'rustup';
+      final rustupPath = path.join(p, rustup);
+      if (File(rustupPath).existsSync()) {
+        return rustupPath;
+      }
+    }
+    return null;
+  }
+}