Use .packages instead of pubspec.yaml

pkg/dev_compiler/test/codegen_test.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Tests code generation.
 ///
 /// Runs Dart Dev Compiler on all input in the `codegen` directory and checks
 /// that the output is what we expected.
 library dev_compiler.test.codegen_test;
 
@@ skipping 65 matching lines @@
       .where((p) => p.endsWith('.sum'))
       .toList();
 
   var analyzerOptions = new AnalyzerOptions(
       dartSdkSummaryPath: sdkSummaryFile, summaryPaths: summaryPaths);
   var compiler = new ModuleCompiler(analyzerOptions);
 
   var testDirs = [
     'language',
     'corelib',
+    path.join('corelib', 'regexp'),
     path.join('lib', 'convert'),
     path.join('lib', 'html'),
+    // TODO(vsm): Fix these - they import files from a different directory
+    // - this triggers an invalid library root build error.
+    // path.join('lib', 'html', 'custom'),
     path.join('lib', 'math'),
     path.join('lib', 'mirrors'),
     path.join('lib', 'typed_data'),
   ];
 
   // Copy all of the test files and expanded multitest files to
   // gen/codegen_tests. We'll compile from there.
   var testFiles = _setUpTests(testDirs);
 
   // Our default compiler options. Individual tests can override these.
@@ skipping 113 matching lines @@
     return source.uri.pathSegments.first;
   }
   throw new Exception('Module not found for library "${source.fullName}"');
 }
 
 List<String> _setUpTests(List<String> testDirs) {
   var testFiles = <String>[];
 
   for (var testDir in testDirs) {
     for (var file
-        in _listFiles(path.join(codegenDir, testDir), recursive: true)) {
+        in _listFiles(path.join(codegenDir, testDir), recursive: false)) {
       var relativePath = path.relative(file, from: codegenDir);
       var outputPath = path.join(codegenTestDir, relativePath);
 
       _ensureDirectory(path.dirname(outputPath));
 
       // Copy it over. We do this even for multitests because import_self_test
       // is a multitest, yet imports its own unexpanded form (!).
       new File(file).copySync(outputPath);
 
       if (file.endsWith("_test.dart")) {
@@ skipping 89 matching lines @@
 /// Simplified from ParseDartTask.resolveDirective.
 String _resolveDirective(UriBasedDirective directive) {
   StringLiteral uriLiteral = directive.uri;
   String uriContent = uriLiteral.stringValue;
   if (uriContent != null) {
     uriContent = uriContent.trim();
     directive.uriContent = uriContent;
   }
   return directive.validate() == null ? uriContent : null;
 }