setup.py

--- a/setup.py	Sun Oct 01 04:04:18 2017 -0700
+++ b/setup.py	Sun Oct 01 04:14:16 2017 -0700
@@ -709,6 +709,8 @@
             'mercurial.hgweb',
             'mercurial.httpclient',
             'mercurial.pure',
+            'mercurial.thirdparty',
+            'mercurial.thirdparty.attr',
             'hgext', 'hgext.convert', 'hgext.fsmonitor',
             'hgext.fsmonitor.pywatchman', 'hgext.highlight',
             'hgext.largefiles', 'hgext.zeroconf', 'hgext3rd',