make final simplifications

src/python/pants/backend/python/targets/python_distribution.py

@@ -7,6 +7,7 @@
 
 from pants.backend.python.targets.python_library import PythonLibrary
 from pants.backend.python.targets.python_target import PythonTarget
+from pants.base.exceptions import TargetDefinitionException
 from pants.base.payload import Payload
 from pants.source.payload_fields import SourcesField
 from pants.source.wrapped_globs import FilesetWithSpec
@@ -30,14 +31,19 @@ def alias(cls):
     '*.cc',
   ] + list(PythonLibrary.default_sources_globs)
 
-  def __init__(self, sources=None, **kwargs):
+  def __init__(self, sources=None, provides=None, **kwargs):
     """
     :param sources: Files to "include". Paths are relative to the
       BUILD file's directory.
     :type sources: ``Fileset`` or list of strings. Must include setup.py.
     """
+    if provides is not None:
+      raise TargetDefinitionException(
+        self, "A PythonDistribution may not have a provides parameter "
+              "(parameter was: '{}').".format(repr(provides)))
+
     super(PythonDistribution, self).__init__(
-      sources=sources, **kwargs)
+      sources=sources, provides=provides, **kwargs)
 
     if not 'setup.py' in sources:
       raise TargetDefinitionException(

src/python/pants/backend/python/tasks/build_local_python_distributions.py

@@ -49,9 +49,7 @@ def implementation_version(cls):
 
   @classmethod
   def subsystem_dependencies(cls):
-    return super(BuildLocalPythonDistributions, cls).subsystem_dependencies() + (
-      LLVM.scoped(cls),
-    )
+    return super(BuildLocalPythonDistributions, cls).subsystem_dependencies() + (LLVM.scoped(cls),)
 
   @memoized_property
   def llvm_base_dir(self):
@@ -94,7 +92,6 @@ def _copy_sources(self, dist_tgt, dist_target_dir):
     # NB: The directory structure of the destination directory needs to match 1:1
     # with the directory structure that setup.py expects.
     all_sources = list(dist_tgt.sources_relative_to_target_base())
-    self.context.log.debug('all_sources: {}'.format(all_sources))
     for src_relative_to_target_base in all_sources:
       src_rel_to_results_dir = os.path.join(dist_target_dir, src_relative_to_target_base)
       safe_mkdir(os.path.dirname(src_rel_to_results_dir))