SDK build bits for dartfmt.

utils/dartfmt/dartfmt.gyp

+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'dartfmt',
+      'type': 'none',
+      'dependencies': [
+        '../../runtime/dart-runtime.gyp:dart',
+        '../../pkg/pkg.gyp:pkg_packages',
+      ],
+      'actions': [
+        {
+          'action_name': 'generate_dartfmt_snapshot',
+          'inputs': [
+            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
+            '../../sdk/lib/_internal/libraries.dart',
+            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../pkg"])',

[ahe, 2013/11/19 18:55:28]

Where are the sources for dartfmt?

[ricow1, 2013/12/06 08:27:53]

you need to add  '<(SHARED_INTERMEDIATE_DIR)/packages.stamp', as an input as
well, otherwise you are not guaranteed that it has been created first (i.e.,
that packages has been symlinked to the out dir)
Additionally, after doing that, you should not need to list the files in
../../pkg as input, that is implicit through the stamp file
Peter: After he has packages.stamp as input that should be enough to also
guarantee that he gets rebuild when the actual dartfmt source changes, you could
make it explicit here by listing ../../pkg/analyzer though (otherwise this could
look like black magic)

[pquitslund, 2013/12/06 17:55:43]

Excellent.  Done.  Thanks!  

+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/dartfmt.dart.snapshot',
+          ],
+          'action': [
+            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
+            '--snapshot=<(SHARED_INTERMEDIATE_DIR)/dartfmt.dart.snapshot',
+            '../../pkg/analyzer/bin/formatter.dart',
+          ],
+        },
+      ],
+    },
+  ],
+}