From 47ab2d088754abbff224caf026195b4f36eb7d66 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Fri, 5 Apr 2019 00:58:20 +0900
Subject: [PATCH] Fix #6245: circular import error

---
 CHANGES                                   |  5 +++++
 sphinxcontrib/serializinghtml/__init__.py | 12 ++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/CHANGES b/CHANGES
index 4ae6072..065e7b1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+Release 1.1.2 (unreleased)
+==========================
+
+* Fix #6245: circular import error
+
 Release 1.1.1 (2019-02-17)
 ==========================
 
diff --git a/sphinxcontrib/serializinghtml/__init__.py b/sphinxcontrib/serializinghtml/__init__.py
index c247656..5f74f43 100644
--- a/sphinxcontrib/serializinghtml/__init__.py
+++ b/sphinxcontrib/serializinghtml/__init__.py
@@ -13,6 +13,7 @@
 
 from sphinx.application import ENV_PICKLE_FILENAME, Sphinx
 from sphinx.builders.html import BuildInfo, StandaloneHTMLBuilder
+from sphinx.deprecation import RemovedInSphinx40Warning, deprecated_alias
 from sphinx.locale import get_translation
 from sphinx.util.osutil import SEP, copyfile, ensuredir, os_path
 
@@ -162,6 +163,17 @@ class JSONHTMLBuilder(SerializingHTMLBuilder):
     searchindex_filename = 'searchindex.json'
 
 
+deprecated_alias('sphinx.builders.html',
+                 {
+                     'LAST_BUILD_FILENAME': LAST_BUILD_FILENAME,
+                     'JSONHTMLBuilder': JSONHTMLBuilder,
+                     'PickleHTMLBuilder': PickleHTMLBuilder,
+                     'SerializingHTMLBuilder': SerializingHTMLBuilder,
+                     'WebHTMLBuilder': PickleHTMLBuilder,
+                 },
+                 RemovedInSphinx40Warning)
+
+
 def setup(app: Sphinx) -> Dict[str, Any]:
     app.setup_extension('sphinx.builders.html')
     app.add_builder(JSONHTMLBuilder)