--- a/setup.py	Thu Aug 22 16:47:31 2019 -0700
+++ b/setup.py	Sun Aug 18 00:45:33 2019 +0300
@@ -1067,6 +1067,7 @@
             'mercurial.cext',
             'mercurial.cffi',
             'mercurial.hgweb',
+            'mercurial.interfaces',
             'mercurial.pure',
             'mercurial.thirdparty',
             'mercurial.thirdparty.attr',