export PANTS_ENABLE_PANTSD=true
export PANTS_PANTSD_FS_EVENT_DETECTION=true

inject_specs_closure

--no-enable-pantsd

$ git diff
diff --git a/src/python/pants/engine/legacy/graph.py b/src/python/pants/engine/legacy/graph.py
index 53be30a..e825efc 100644
--- a/src/python/pants/engine/legacy/graph.py
+++ b/src/python/pants/engine/legacy/graph.py
@@ -170,13 +170,16 @@ class LegacyBuildGraph(BuildGraph):
   def _inject(self, subjects):
     """Request LegacyTargets for each of the subjects, and yield resulting Addresses."""
     logger.debug('Injecting to {}: {}'.format(self, subjects))
-    request = self._scheduler.execution_request([LegacyTarget], subjects)
+    request = self._scheduler.execution_request([LegacyTarget, Address], [DescendantAddresses('3rdparty'), SiblingAddresses('src')])
     result = self._engine.execute(request)
     if result.error:
       raise result.error
     # Update the base class indexes for this request.
-    for address in self._index(request.roots):
-      yield address
+    legacy_target_root, address_root = request.roots
+    self._index([legacy_target_root])
+
+    address_state = self._scheduler.root_entries(request)[address_root]
+    return address_state.value


 class LegacyTarget(datatype('LegacyTarget', ['adaptor', 'dependencies'])):

W0510 18:15:58.257334 22809 pailgun_service.py:69] encountered exception during SchedulerService.get_build_graph():
Traceback (most recent call last):
  File "/Users/kwilson/dev/pants/src/python/pants/pantsd/service/pailgun_service.py", line 65, in runner_factory
    build_graph = self._scheduler_service.get_build_graph(spec_roots)
  File "/Users/kwilson/dev/pants/src/python/pants/pantsd/service/scheduler_service.py", line 87, in get_build_graph
    for _ in graph.inject_specs_closure(spec_roots):  # Ensure the entire generator is unrolled.
  File "/Users/kwilson/dev/pants/src/python/pants/engine/legacy/graph.py", line 167, in inject_specs_closure
    for address in self._inject(specs):
  File "/Users/kwilson/dev/pants/src/python/pants/engine/legacy/graph.py", line 178, in _inject
    for address in self._index(request.roots):
  File "/Users/kwilson/dev/pants/src/python/pants/engine/legacy/graph.py", line 64, in _index
    'Build graph construction failed for {}:\n  {}'.format(node.subject, state.exc))
AddressLookupError: Build graph construction failed for DescendantAddresses(directory=u''):
  No source of explicit dependency SelectNode(subject=(PathGlobs(ftype=<class 'pants.engine.selectors.Collection(<class 'pants.engine.fs.File'>)'>, dependencies=(PathLiteral(ftype=<class 'pants.engine.selectors.Collection(<class 'pants.engine.fs.File'>)'>, directory=u'examples/src/java/org/pantsbuild/example/hello/main/config', remainder=u'*'),)), PathGlobs(ftype=<class 'pants.engine.selectors.Collection(<class 'pants.engine.fs.File'>)'>, dependencies=())), product=<class 'pants.engine.selectors.Collection(<class 'pants.engine.fs.FileContent'>)'>, variants=None, variant_key=None)

:34:19.852246 30526 pailgun_server.py:72] handling pailgun request: `./pants list examples/tests/java/org/pantsbuild/example/hello/greet:greet`
W0510 18:34:20.378123 30526 pailgun_service.py:69] encountered exception during SchedulerService.get_build_graph():
Traceback (most recent call last):
  File "/Users/yic/workspace/pants/src/python/pants/pantsd/service/pailgun_service.py", line 65, in runner_factory
    build_graph = self._scheduler_service.get_build_graph(spec_roots)
  File "/Users/yic/workspace/pants/src/python/pants/pantsd/service/scheduler_service.py", line 85, in get_build_graph
    graph = self._build_graph_facade_cls(self._scheduler, self._engine, self._symbol_table_cls)
  File "/Users/yic/workspace/pants/src/python/pants/engine/legacy/graph.py", line 42, in __init__
    self._graph = scheduler.product_graph
  File "/Users/yic/workspace/pants/src/python/pants/build_graph/build_graph.py", line 99, in __init__
    self.reset()
  File "/Users/yic/workspace/pants/src/python/pants/engine/legacy/graph.py", line 46, in reset
  File "/Users/yic/workspace/pants/src/python/pants/engine/legacy/graph.py", line 61, in _index
    # Locate nodes that contain LegacyTarget values.
AddressLookupError: Build graph construction failed for Link(path=u'dist/export-classpath/examples.src.resources.org.pantsbuild.example.hello.hello-0'):
  Absolute symlinks not supported in FileSystemProjectTree(/Users/yic/workspace/pants): dist/export-classpath/examples.src.resources.org.pantsbuild.example.hello.hello-0 -> /Users/yic/workspace/pants/.pants.d/resources/prepare/d4600a981d5d/examples.src.resources.org.pantsbuild.example.hello.hello/ffc23b4562d3

./dist

./dist

--pants-ignore

FileSystemProjectTree

./dist/export-classpath

.pants.d

export-classpath

clean-all