diff --git a/firka/codegen-lock.yaml b/firka/codegen-lock.yaml
new file mode 100644
index 0000000..bba4228
--- /dev/null
+++ b/firka/codegen-lock.yaml
@@ -0,0 +1,21 @@
+icons:
+  "flutter_launcher_icons.yaml": "c600507ca0df7cebd0f708124842512a14ed3d597b779176200d6ba25b1335b1"
+  "pubspec.yaml": "57b4c0a018bc425e4b28d8942dca6071371d1801d81f36951c8c37a894a38987"
+  "assets/images/logos/colored_logo.webp": "4b4fa99d144fe6694aa4487ba1b26aeecafae41e3c877836cd7da28d61a77983"
+  "assets/images/logos/monochrome_logo.png": "188d2b0a64c70323b09bcee721663d6698fb557066f20ddaec97bba6869c1c6c"
+  "assets/images/logos/colored_logo_without_mustache.png": "d11cff9f38985885873bfdd2d84e61f8fab03803eada94d4caac1545ef3685f3"
+  "assets/images/logos/colored_logo_only_mustache.png": "bad6220c11bdfb1dfe04e5173bd2ebedd3999689d4b3a68fc63dc520c96dd33b"
+l10n:
+  "l10n.yml": "a57bc304cac4a2b0235593586f17f400a5165d67fc9aadeaa11893cfa36ee082"
+  "lib/l10n/app_de.arb": "55f030b312cc07ff05cdc3d6ee10ef9bdec3243b507225e9a47196444518d955"
+  "lib/l10n/app_en.arb": "cbad6dd2485a983e399cce97371c19089b9110d30536488c14a7ea709c7b6ead"
+  "lib/l10n/app_hu.arb": "17077ec76b68ed03796a264b99e4dba9e6ddd532e27a92d8fb237ea6f211f757"
+isar:
+  "lib/data/models/app_settings_model.dart": "5eb5af345f1347f104257f0999763650fe2673f9da1754bd12d3f756fe5c9723"
+  "lib/data/models/generic_cache_model.dart": "79151d0467fb5d40c532eaaa08ad7c7e24a34304199280fbf49cf6e5adcce6bc"
+  "lib/data/models/homework_cache_model.dart": "45789970b27d5790cdc54c292ef2f5feaa5f4e293b8a8862fd676d5eb3e25d29"
+  "lib/data/models/timetable_cache_model.dart": "b972bf51e399f8d20d4f9ad660082d4cc4a9798df9ac9d6ec9ef6ac640205572"
+  "lib/data/models/token_model.dart": "8c957cd07e473827d78fd8fd4fb6c1336b636a69c25c93618e1e7f94b7cf0683"
+splash:
+  "flutter_native_splash.yaml": "0fd4a85d6f950d97298e99916927649940ffcfdadfc136ceee126fed0dbaa9f2"
+  "assets/images/logos/splash.png": "88fbebc3d686cb9095bcce362029b69978b1b14270e465e91d962b1425db1152"
diff --git a/firka/pubspec.yaml b/firka/pubspec.yaml
index 6cf647b..0ae6d96 100644
--- a/firka/pubspec.yaml
+++ b/firka/pubspec.yaml
@@ -62,6 +62,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^6.0.0
+  yaml: ^3.1.2
   isar_community_generator: 3.3.0
   android_notification_icons: ^0.0.1
   integration_test:
diff --git a/firka/scripts/codegen.dart b/firka/scripts/codegen.dart
index 032c5ad..aa6bfea 100644
--- a/firka/scripts/codegen.dart
+++ b/firka/scripts/codegen.dart
@@ -1,42 +1,55 @@
 import 'dart:io';
 
+import 'package:crypto/crypto.dart';
 import 'package:image/image.dart' as img;
 import 'package:path/path.dart' as p;
+import 'package:yaml/yaml.dart' as yaml;
+
+const _lockFileName = 'codegen-lock.yaml';
 
 void main() async {
   final root = _projectRoot();
   var ran = false;
 
   if (_iconsOutOfDate(root)) {
+    final inputs = _iconsInputs(root);
     stdout.writeln('Icons out of date, running flutter_launcher_icons...');
     await _run('dart', ['run', 'flutter_launcher_icons'], root);
+    _updateLockWithHashes(root, 'icons', _computeHashes(root, inputs));
     ran = true;
   }
 
   if (_l10nOutOfDate(root)) {
+    final inputs = _l10nInputs(root);
     stdout.writeln('l10n out of date, running flutter gen-l10n...');
     await _run('flutter', [
       'gen-l10n',
       '--template-arb-file',
       'app_hu.arb',
     ], root);
+    _updateLockWithHashes(root, 'l10n', _computeHashes(root, inputs));
     ran = true;
   }
 
   if (_isarOutOfDate(root)) {
+    final inputs = _isarInputs(root);
+    final hashes = _computeHashes(root, inputs);
     stdout.writeln(
       'Isar generated dart files out of date, running build_runner...',
     );
     await _run('dart', ['run', 'build_runner', 'build'], root);
+    _updateLockWithHashes(root, 'isar', hashes);
     ran = true;
   }
 
   if (_splashOutOfDate(root)) {
+    final inputs = _splashInputs(root);
     await _generateAndroid12SplashImage(root);
     stdout.writeln(
       'Splash out of date, running flutter_native_splash:create...',
     );
     await _run('dart', ['run', 'flutter_native_splash:create'], root);
+    _updateLockWithHashes(root, 'splash', _computeHashes(root, inputs));
     ran = true;
   }
 
@@ -47,7 +60,92 @@ void main() async {
 
 String _projectRoot() {
   final script = p.canonicalize(Platform.script.toFilePath());
-  return p.dirname(p.dirname(script));
+  return p.canonicalize(p.dirname(p.dirname(script)));
+}
+
+String _lockPath(String root) => p.join(root, _lockFileName);
+
+Map<String, Map<String, String>>? _readLock(String root) {
+  final file = File(_lockPath(root));
+  if (!file.existsSync()) return null;
+  try {
+    final content = file.readAsStringSync();
+    final decoded = yaml.loadYaml(content);
+    if (decoded is! Map) return null;
+    final result = <String, Map<String, String>>{};
+    for (final entry in decoded.entries) {
+      if (entry.value is! Map) continue;
+      final inner = entry.value as Map;
+      result[entry.key.toString()] = inner.map(
+        (k, v) => MapEntry(
+          Platform.isWindows ? k.toString().toLowerCase() : k.toString(),
+          v?.toString() ?? '',
+        ),
+      );
+    }
+    return result;
+  } catch (_) {
+    return null;
+  }
+}
+
+void _writeLock(String root, Map<String, Map<String, String>> lock) {
+  final buf = StringBuffer();
+  for (final stepEntry in lock.entries) {
+    buf.writeln('${stepEntry.key}:');
+    for (final fileEntry in stepEntry.value.entries) {
+      buf.writeln(
+        '  "${_escapeYaml(fileEntry.key)}": "${_escapeYaml(fileEntry.value)}"',
+      );
+    }
+  }
+  File(_lockPath(root)).writeAsStringSync(buf.toString());
+}
+
+String _escapeYaml(String s) =>
+    s.replaceAll('\\', '\\\\').replaceAll('"', '\\"');
+
+String _fileHash(File file) {
+  final bytes = file.readAsBytesSync();
+  final digest = sha256.convert(bytes);
+  return digest.toString();
+}
+
+String _relativePath(String root, File file) {
+  final rel = p.relative(file.path, from: root);
+  final normalized = rel.replaceAll('\\', '/');
+  return Platform.isWindows ? normalized.toLowerCase() : normalized;
+}
+
+bool _hashesMatch(
+  String root,
+  String stepName,
+  List<File> inputs,
+  Map<String, Map<String, String>>? lock,
+) {
+  if (lock == null || !lock.containsKey(stepName)) return false;
+  final stepHashes = lock[stepName]!;
+  for (final f in inputs) {
+    final rel = _relativePath(root, f);
+    final stored = stepHashes[rel];
+    if (stored == null || stored != _fileHash(f)) return false;
+  }
+  if (stepHashes.length != inputs.length) return false;
+  return true;
+}
+
+Map<String, String> _computeHashes(String root, List<File> inputs) {
+  return {for (final f in inputs) _relativePath(root, f): _fileHash(f)};
+}
+
+void _updateLockWithHashes(
+  String root,
+  String stepName,
+  Map<String, String> hashes,
+) {
+  final lock = _readLock(root) ?? <String, Map<String, String>>{};
+  lock[stepName] = Map.from(hashes);
+  _writeLock(root, lock);
 }
 
 DateTime? _modified(File file) {
@@ -65,7 +163,7 @@ bool _anyNewerThan(Iterable<File> inputs, File output) {
   return false;
 }
 
-bool _iconsOutOfDate(String root) {
+List<File> _iconsInputs(String root) {
   final config = File(p.join(root, 'flutter_launcher_icons.yaml'));
   final pubspec = File(p.join(root, 'pubspec.yaml'));
   final imagePath = File(p.join(root, 'assets/images/logos/colored_logo.webp'));
@@ -78,25 +176,25 @@ bool _iconsOutOfDate(String root) {
   final foreground = File(
     p.join(root, 'assets/images/logos/colored_logo_only_mustache.png'),
   );
+  return [config, pubspec, imagePath, monochrome, background, foreground]
+      .where((f) => f.existsSync())
+      .map((f) => File(p.canonicalize(f.path)))
+      .toList();
+}
 
-  final inputs = [
-    config,
-    pubspec,
-    imagePath,
-    monochrome,
-    background,
-    foreground,
-  ].where((f) => f.existsSync()).map((f) => File(p.canonicalize(f.path)));
+bool _iconsOutOfDate(String root) {
+  final inputs = _iconsInputs(root);
   final output = File(
     p.join(
       root,
       'android/app/src/main/res/mipmap-anydpi-v26/launcher_icon.xml',
     ),
   );
-  return _anyNewerThan(inputs, output);
+  if (!_anyNewerThan(inputs, output)) return false;
+  return !_hashesMatch(root, 'icons', inputs, _readLock(root));
 }
 
-bool _l10nOutOfDate(String root) {
+List<File> _l10nInputs(String root) {
   final l10nDir = p.join(root, 'lib/l10n');
   final l10nYml = File(p.join(root, 'l10n.yml'));
   final arbs = Directory(l10nDir)
@@ -105,41 +203,60 @@ bool _l10nOutOfDate(String root) {
       .where((f) => f.path.endsWith('.arb'))
       .map((f) => File(p.canonicalize(f.path)))
       .toList();
-  final inputs = [l10nYml, ...arbs].where((f) => f.existsSync()).cast<File>();
-  final output = File(p.join(root, 'lib/l10n/app_localizations.dart'));
-  return _anyNewerThan(inputs, output);
+  return [l10nYml, ...arbs].where((f) => f.existsSync()).cast<File>().toList();
 }
 
-bool _isarOutOfDate(String root) {
-  final modelsDir = p.join(root, 'lib/data/models');
-  if (!Directory(modelsDir).existsSync()) return false;
+bool _l10nOutOfDate(String root) {
+  final inputs = _l10nInputs(root);
+  final output = File(p.join(root, 'lib/l10n/app_localizations.dart'));
+  if (!_anyNewerThan(inputs, output)) return false;
+  return !_hashesMatch(root, 'l10n', inputs, _readLock(root));
+}
 
+List<File> _isarInputs(String root) {
+  final modelsDir = p.join(root, 'lib/data/models');
+  if (!Directory(modelsDir).existsSync()) return [];
+  final list = <File>[];
   for (final entity in Directory(modelsDir).listSync()) {
     if (entity is! File || !entity.path.endsWith('.dart')) continue;
     final content = entity.readAsStringSync();
     if (!content.contains("part '") || !content.contains('.g.dart')) continue;
+    list.add(File(p.canonicalize(entity.path)));
+  }
+  return list;
+}
 
-    final baseName = p.basenameWithoutExtension(entity.path);
-    final gPath = p.join(modelsDir, '$baseName.g.dart');
-    final dartFile = File(p.canonicalize(entity.path));
-    final gFile = File(gPath);
-    if (_anyNewerThan([dartFile], gFile)) return true;
+bool _isarOutOfDate(String root) {
+  final inputs = _isarInputs(root);
+  if (inputs.isEmpty) return false;
+  final modelsDir = p.join(root, 'lib/data/models');
+  for (final dartFile in inputs) {
+    final baseName = p.basenameWithoutExtension(dartFile.path);
+    final gFile = File(p.join(modelsDir, '$baseName.g.dart'));
+    if (_anyNewerThan([dartFile], gFile)) {
+      return !_hashesMatch(root, 'isar', inputs, _readLock(root));
+    }
   }
   return false;
 }
 
-bool _splashOutOfDate(String root) {
+List<File> _splashInputs(String root) {
   final config = File(p.join(root, 'flutter_native_splash.yaml'));
   final splashImage = File(p.join(root, 'assets/images/logos/splash.png'));
-  final inputs = [config, splashImage]
+  return [config, splashImage]
       .where((f) => f.existsSync())
       .map((f) => File(p.canonicalize(f.path)))
       .toList();
+}
+
+bool _splashOutOfDate(String root) {
+  final inputs = _splashInputs(root);
   if (inputs.isEmpty) return false;
   final output = File(
     p.join(root, 'android/app/src/main/res/drawable/launch_background.xml'),
   );
-  return _anyNewerThan(inputs, output);
+  if (!_anyNewerThan(inputs, output)) return false;
+  return !_hashesMatch(root, 'splash', inputs, _readLock(root));
 }
 
 Future<void> _generateAndroid12SplashImage(String root) async {
diff --git a/firka_wear/codegen-lock.yaml b/firka_wear/codegen-lock.yaml
new file mode 100644
index 0000000..f80d03c
--- /dev/null
+++ b/firka_wear/codegen-lock.yaml
@@ -0,0 +1,18 @@
+icons:
+  "flutter_launcher_icons.yaml": "2c1bf9056dfe8db94333143643d2b46308fa332e08de9eda62046a941e83aaaa"
+  "pubspec.yaml": "6be6ac0844c8554f0e2d3eb4d60adf3debae1b29528b4cfba2023d0ccc5e33bf"
+  "assets/images/logos/colored_logo.png": "ff9c3452b1b0ed07ffa9067fa4cf4dae45dad3e46f5cb6ef4a62ac8c05d8c080"
+  "assets/images/logos/monochrome_logo.png": "188d2b0a64c70323b09bcee721663d6698fb557066f20ddaec97bba6869c1c6c"
+  "assets/images/logos/colored_logo_without_mustache.png": "d11cff9f38985885873bfdd2d84e61f8fab03803eada94d4caac1545ef3685f3"
+  "assets/images/logos/colored_logo_only_mustache.png": "bad6220c11bdfb1dfe04e5173bd2ebedd3999689d4b3a68fc63dc520c96dd33b"
+l10n:
+  "l10n.yml": "a57bc304cac4a2b0235593586f17f400a5165d67fc9aadeaa11893cfa36ee082"
+  "lib/l10n/app_de.arb": "55f030b312cc07ff05cdc3d6ee10ef9bdec3243b507225e9a47196444518d955"
+  "lib/l10n/app_en.arb": "efac3f14d8ecc3e278f80a3e5aff599a88e408d2e30ff9e30f889978f465823a"
+  "lib/l10n/app_hu.arb": "a7f61bf4452a639d61c350f6674fdb5fd424f9ab31a195a200d446763fa8b396"
+isar:
+  "lib/data/models/app_settings_model.dart": "2bf4d089ccfcb73edbca5b2d5757e1e698ddde2b8783d212a870aac3157fbb5b"
+  "lib/data/models/generic_cache_model.dart": "dd9979a4f0ba37ce5fd733bf0966088a759b5f356d97ea09c65eefffe8984639"
+  "lib/data/models/homework_cache_model.dart": "911748133c4bcb32bebe40a7c2f6f30d63c030b89a77c6825ec19643d8f8b3c6"
+  "lib/data/models/timetable_cache_model.dart": "078cbc0c5b1e3f0303a56bfe1e55df7669f0b06687ba399ddcae2df2b565d4c7"
+  "lib/data/models/token_model.dart": "3dc6211102c00d8382bfaa929e0ca7dedd7b1771c337f4e96d54e47572e5f6e1"
diff --git a/firka_wear/pubspec.yaml b/firka_wear/pubspec.yaml
index 08f6dd6..f7bd217 100644
--- a/firka_wear/pubspec.yaml
+++ b/firka_wear/pubspec.yaml
@@ -65,9 +65,11 @@ dependencies:
 
 dev_dependencies:
   build_runner: any
+  crypto: ^3.0.6
   flutter_test:
     sdk: flutter
   flutter_lints: ^6.0.0
+  yaml: ^3.1.2
   isar_community_generator: 3.3.0
   android_notification_icons: ^0.0.1
   integration_test:
diff --git a/firka_wear/scripts/codegen.dart b/firka_wear/scripts/codegen.dart
index 190f2bc..6325632 100644
--- a/firka_wear/scripts/codegen.dart
+++ b/firka_wear/scripts/codegen.dart
@@ -1,32 +1,43 @@
 import 'dart:io';
 
+import 'package:crypto/crypto.dart';
 import 'package:path/path.dart' as p;
+import 'package:yaml/yaml.dart' as yaml;
+
+const _lockFileName = 'codegen-lock.yaml';
 
 void main() async {
   final root = _projectRoot();
   var ran = false;
 
   if (_iconsOutOfDate(root)) {
+    final inputs = _iconsInputs(root);
     stdout.writeln('Icons out of date, running flutter_launcher_icons...');
     await _run('dart', ['run', 'flutter_launcher_icons'], root);
+    _updateLockWithHashes(root, 'icons', _computeHashes(root, inputs));
     ran = true;
   }
 
   if (_l10nOutOfDate(root)) {
+    final inputs = _l10nInputs(root);
     stdout.writeln('l10n out of date, running flutter gen-l10n...');
     await _run('flutter', [
       'gen-l10n',
       '--template-arb-file',
       'app_hu.arb',
     ], root);
+    _updateLockWithHashes(root, 'l10n', _computeHashes(root, inputs));
     ran = true;
   }
 
   if (_isarOutOfDate(root)) {
+    final inputs = _isarInputs(root);
+    final hashes = _computeHashes(root, inputs);
     stdout.writeln(
       'Isar generated dart files out of date, running build_runner...',
     );
     await _run('dart', ['run', 'build_runner', 'build'], root);
+    _updateLockWithHashes(root, 'isar', hashes);
     ran = true;
   }
 
@@ -37,7 +48,92 @@ void main() async {
 
 String _projectRoot() {
   final script = p.canonicalize(Platform.script.toFilePath());
-  return p.dirname(p.dirname(script));
+  return p.canonicalize(p.dirname(p.dirname(script)));
+}
+
+String _lockPath(String root) => p.join(root, _lockFileName);
+
+Map<String, Map<String, String>>? _readLock(String root) {
+  final file = File(_lockPath(root));
+  if (!file.existsSync()) return null;
+  try {
+    final content = file.readAsStringSync();
+    final decoded = yaml.loadYaml(content);
+    if (decoded is! Map) return null;
+    final result = <String, Map<String, String>>{};
+    for (final entry in decoded.entries) {
+      if (entry.value is! Map) continue;
+      final inner = entry.value as Map;
+      result[entry.key.toString()] = inner.map(
+        (k, v) => MapEntry(
+          Platform.isWindows ? k.toString().toLowerCase() : k.toString(),
+          v?.toString() ?? '',
+        ),
+      );
+    }
+    return result;
+  } catch (_) {
+    return null;
+  }
+}
+
+void _writeLock(String root, Map<String, Map<String, String>> lock) {
+  final buf = StringBuffer();
+  for (final stepEntry in lock.entries) {
+    buf.writeln('${stepEntry.key}:');
+    for (final fileEntry in stepEntry.value.entries) {
+      buf.writeln(
+        '  "${_escapeYaml(fileEntry.key)}": "${_escapeYaml(fileEntry.value)}"',
+      );
+    }
+  }
+  File(_lockPath(root)).writeAsStringSync(buf.toString());
+}
+
+String _escapeYaml(String s) =>
+    s.replaceAll('\\', '\\\\').replaceAll('"', '\\"');
+
+String _fileHash(File file) {
+  final bytes = file.readAsBytesSync();
+  final digest = sha256.convert(bytes);
+  return digest.toString();
+}
+
+String _relativePath(String root, File file) {
+  final rel = p.relative(file.path, from: root);
+  final normalized = rel.replaceAll('\\', '/');
+  return Platform.isWindows ? normalized.toLowerCase() : normalized;
+}
+
+bool _hashesMatch(
+  String root,
+  String stepName,
+  List<File> inputs,
+  Map<String, Map<String, String>>? lock,
+) {
+  if (lock == null || !lock.containsKey(stepName)) return false;
+  final stepHashes = lock[stepName]!;
+  for (final f in inputs) {
+    final rel = _relativePath(root, f);
+    final stored = stepHashes[rel];
+    if (stored == null || stored != _fileHash(f)) return false;
+  }
+  if (stepHashes.length != inputs.length) return false;
+  return true;
+}
+
+Map<String, String> _computeHashes(String root, List<File> inputs) {
+  return {for (final f in inputs) _relativePath(root, f): _fileHash(f)};
+}
+
+void _updateLockWithHashes(
+  String root,
+  String stepName,
+  Map<String, String> hashes,
+) {
+  final lock = _readLock(root) ?? <String, Map<String, String>>{};
+  lock[stepName] = Map.from(hashes);
+  _writeLock(root, lock);
 }
 
 DateTime? _modified(File file) {
@@ -55,7 +151,7 @@ bool _anyNewerThan(Iterable<File> inputs, File output) {
   return false;
 }
 
-bool _iconsOutOfDate(String root) {
+List<File> _iconsInputs(String root) {
   final config = File(p.join(root, 'flutter_launcher_icons.yaml'));
   final pubspec = File(p.join(root, 'pubspec.yaml'));
   final imagePath = File(p.join(root, 'assets/images/logos/colored_logo.png'));
@@ -68,25 +164,25 @@ bool _iconsOutOfDate(String root) {
   final foreground = File(
     p.join(root, 'assets/images/logos/colored_logo_only_mustache.png'),
   );
+  return [config, pubspec, imagePath, monochrome, background, foreground]
+      .where((f) => f.existsSync())
+      .map((f) => File(p.canonicalize(f.path)))
+      .toList();
+}
 
-  final inputs = [
-    config,
-    pubspec,
-    imagePath,
-    monochrome,
-    background,
-    foreground,
-  ].where((f) => f.existsSync()).map((f) => File(p.canonicalize(f.path)));
+bool _iconsOutOfDate(String root) {
+  final inputs = _iconsInputs(root);
   final output = File(
     p.join(
       root,
       'android/app/src/main/res/mipmap-anydpi-v26/launcher_icon.xml',
     ),
   );
-  return _anyNewerThan(inputs, output);
+  if (!_anyNewerThan(inputs, output)) return false;
+  return !_hashesMatch(root, 'icons', inputs, _readLock(root));
 }
 
-bool _l10nOutOfDate(String root) {
+List<File> _l10nInputs(String root) {
   final l10nDir = p.join(root, 'lib/l10n');
   final l10nYml = File(p.join(root, 'l10n.yml'));
   final arbs = Directory(l10nDir)
@@ -95,25 +191,39 @@ bool _l10nOutOfDate(String root) {
       .where((f) => f.path.endsWith('.arb'))
       .map((f) => File(p.canonicalize(f.path)))
       .toList();
-  final inputs = [l10nYml, ...arbs].where((f) => f.existsSync()).cast<File>();
-  final output = File(p.join(root, 'lib/l10n/app_localizations.dart'));
-  return _anyNewerThan(inputs, output);
+  return [l10nYml, ...arbs].where((f) => f.existsSync()).cast<File>().toList();
 }
 
-bool _isarOutOfDate(String root) {
-  final modelsDir = p.join(root, 'lib/data/models');
-  if (!Directory(modelsDir).existsSync()) return false;
+bool _l10nOutOfDate(String root) {
+  final inputs = _l10nInputs(root);
+  final output = File(p.join(root, 'lib/l10n/app_localizations.dart'));
+  if (!_anyNewerThan(inputs, output)) return false;
+  return !_hashesMatch(root, 'l10n', inputs, _readLock(root));
+}
 
+List<File> _isarInputs(String root) {
+  final modelsDir = p.join(root, 'lib/data/models');
+  if (!Directory(modelsDir).existsSync()) return [];
+  final list = <File>[];
   for (final entity in Directory(modelsDir).listSync()) {
     if (entity is! File || !entity.path.endsWith('.dart')) continue;
     final content = entity.readAsStringSync();
     if (!content.contains("part '") || !content.contains('.g.dart')) continue;
+    list.add(File(p.canonicalize(entity.path)));
+  }
+  return list;
+}
 
-    final baseName = p.basenameWithoutExtension(entity.path);
-    final gPath = p.join(modelsDir, '$baseName.g.dart');
-    final dartFile = File(p.canonicalize(entity.path));
-    final gFile = File(gPath);
-    if (_anyNewerThan([dartFile], gFile)) return true;
+bool _isarOutOfDate(String root) {
+  final inputs = _isarInputs(root);
+  if (inputs.isEmpty) return false;
+  final modelsDir = p.join(root, 'lib/data/models');
+  for (final dartFile in inputs) {
+    final baseName = p.basenameWithoutExtension(dartFile.path);
+    final gFile = File(p.join(modelsDir, '$baseName.g.dart'));
+    if (_anyNewerThan([dartFile], gFile)) {
+      return !_hashesMatch(root, 'isar', inputs, _readLock(root));
+    }
   }
   return false;
 }