Refactor init manifest error handling.

cdist/__init__.py

@@ -141,8 +141,8 @@ class InitialManifestError(Error):
     @property
     def stderr(self):
         output = []
-        label = "init" + ':stderr '
         if os.path.getsize(self.stderr_path) > 0:
+            label = "init" + ':stderr '
             output.append('{0:-<{1}}'.format(label, self.line_length))
             with open(self.stderr_path, 'r') as fd:
                 output.append(fd.read())
@@ -152,7 +152,7 @@ class InitialManifestError(Error):
         output = []
         output.append(self.message)
         output.append('''{label:-<{length}}
-initial manifest: {im}'''.format(
+path: {im}'''.format(
             label='---- initial manifest ',
             length=self.line_length,
             im=self.initial_manifest)

cdist/config.py

@@ -403,7 +403,14 @@ class Config(object):
         self._init_files_dirs()
 
         self.explorer.run_global_explorers(self.local.global_explorer_out_path)
-        self.manifest.run_initial_manifest(self.local.initial_manifest)
+        try:
+            self.manifest.run_initial_manifest(self.local.initial_manifest)
+        except cdist.Error as e:
+            which = "init"
+            stdout_path = os.path.join(self.local.stdout_base_path, which)
+            stderr_path = os.path.join(self.local.stderr_base_path, which)
+            raise cdist.InitialManifestError(self.local.initial_manifest,
+                                             stdout_path, stderr_path, e)
         self.iterate_until_finished()
         self.cleanup()
         self._remove_files_dirs()

cdist/core/manifest.py

@@ -158,15 +158,11 @@ class Manifest(object):
         stdout_path = os.path.join(self.local.stdout_base_path, which)
         with open(stderr_path, 'ba+') as stderr, \
                 open(stdout_path, 'ba+') as stdout:
-            try:
-                self.local.run_script(
-                    initial_manifest,
-                    env=self.env_initial_manifest(initial_manifest),
-                    message_prefix=message_prefix,
-                    stdout=stdout, stderr=stderr)
-            except cdist.Error as e:
-                raise cdist.InitialManifestError(initial_manifest, stdout_path,
-                                                 stderr_path, e)
+            self.local.run_script(
+                initial_manifest,
+                env=self.env_initial_manifest(initial_manifest),
+                message_prefix=message_prefix,
+                stdout=stdout, stderr=stderr)
 
     def env_type_manifest(self, cdist_object):
         type_manifest = os.path.join(self.local.type_path,