adds file path source to pub

utils/pub/validator/dependency.dart

Index: utils/pub/validator/dependency.dart
diff --git a/utils/pub/validator/dependency.dart b/utils/pub/validator/dependency.dart
index 18cff6624b013321e2dc78b7713349f05f89e5f1..3a21dc0957267de739adb9781b691c4e2145acfa 100644
--- a/utils/pub/validator/dependency.dart
+++ b/utils/pub/validator/dependency.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, 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.
 
@@ -8,6 +8,7 @@ import 'dart:async';
 
 import '../entrypoint.dart';
 import '../hosted_source.dart';
+import '../path_source.dart';
 import '../http.dart';
 import '../package.dart';
 import '../utils.dart';
@@ -20,7 +21,12 @@ class DependencyValidator extends Validator {
     : super(entrypoint);
 
   Future validate() {
-    return Future.forEach(entrypoint.root.pubspec.dependencies, (dependency) {
+    return Futures.forEach(entrypoint.root.pubspec.dependencies, (dependency) {
+      if (dependency.source is PathSource){
+        errors.add('"${dependency.name}" dependancy package must be defined '
+            'using "hosted" or "git" source.');
+            return new Future.immediate(null);
+      }

[Bob Nystrom, 2013/01/17 19:15:10]

Let's reuse the _warnAboutSource method here since it generates a nice error
message. How about changing it to:

_reportInvalidSource(PackageRef ref, {bool error = false}) { ... }

Then in the body check "error" to see if it should be reported to errors or
warnings.

[Sam E, 2013/01/20 04:16:57]

I don't think this is going to work. The logic is completely different when
using a path source.

I'll leave it as is for now

       if (dependency.source is! HostedSource) {
         return _warnAboutSource(dependency);
       }