Skip dependency caches path in _findRoots. (#269)

Author: Kurogoma4D

packages/custom_lint/CHANGELOG.md

@@ -1,3 +1,7 @@
+## Unreleased patch
+
+- Fixed an error in the CLI when Flutter generates code under `.dart_tool/` or has dependencies on iOS libraries (thanks to @Kurogoma4D)
+
 ## 0.6.5 - 2024-08-15
 
 - Upgraded to analyzer ^6.6.0.

packages/custom_lint/lib/src/workspace.dart

@@ -425,7 +425,17 @@ Iterable<String> _findRoots(String path) sync* {
 
   yield* directory.listSync(recursive: true).whereType<File>().where((file) {
     final fileName = basename(file.path);
-    return fileName == 'pubspec.yaml' || fileName == 'analysis_options.yaml';
+    if (fileName != 'pubspec.yaml' && fileName != 'analysis_options.yaml') {
+      return false;
+    }
+    // Check if the project has a package_config.json file.
+    final isChildFromCache =
+        file.uri.pathSegments.any((e) => e == '.dart_tool' || e == '.symlinks');
+    if (isChildFromCache) {
+      return file.parent.packageConfig.existsSync();
+    }
+
+    return true;
   }).map((file) => file.parent.path);
 }
 

packages/custom_lint/test/cli_process_test.dart

@@ -6,6 +6,7 @@ import 'dart:io';
 
 import 'package:custom_lint/src/output/output_format.dart';
 import 'package:custom_lint_core/custom_lint_core.dart';
+import 'package:path/path.dart';
 import 'package:test/test.dart';
 import 'package:test_process/test_process.dart';
 
@@ -113,6 +114,47 @@ No issues found!
       expect(process.stdout, '''
 Analyzing...
 
+No issues found!
+''');
+      expect(process.exitCode, 0);
+    });
+
+    test(
+        'running on a workspace with dependencies without a package_config.json',
+        () {
+      final app = createLintUsage(name: 'test_app');
+      const testDepsName = 'test_deps';
+      const testDepsPubSpec = '''
+name: $testDepsName
+version: 0.0.1
+''';
+      createTmpFolder(
+        {
+          'pubspec.yaml': testDepsPubSpec,
+        },
+        testDepsName,
+        parent: Directory(join(app.path, '.dart_tool')),
+      );
+      createTmpFolder(
+        {
+          join('.symlinks', 'plugins', 'pubspec.yaml'): testDepsPubSpec,
+        },
+        'ios',
+        parent: app,
+      );
+
+      final process = Process.runSync(
+        'dart',
+        [customLintBinPath],
+        workingDirectory: app.path,
+        stdoutEncoding: utf8,
+        stderrEncoding: utf8,
+      );
+
+      expect(trimDependencyOverridesWarning(process.stderr), isEmpty);
+      expect(process.stdout, '''
+Analyzing...
+
 No issues found!
 ''');
       expect(process.exitCode, 0);