setup.py, make: avoid problems with outdated, existing hgext/__index__.py* "make clean" already removed __index__.py[cdo], but not the __index__.py (automatically generated by "python setup.py build_hgextindex"). "setup.py build_hgextindex" did not generate a new index if file __index__.py[cdo] already existed, because if __index__.py was removed, the compiled file containing the old information was imported and used. Generate an empty file (with a new timestamp to generate a new .py[cdo]) instead and make mercurial.extensions ignore the unset docs attribute. One of the problems was a failed test-help.t, to reproduce: $ rm hgext/__index__.py* $ echo 'docs = {"mq": "dummy"}' > hgext/__index__.py $ make test-help.t With this a "make clean" or "python setup.py build_hgextindex" helps.

--- a/setup.py	Sat May 03 03:29:30 2014 +0200
+++ b/setup.py	Mon May 05 16:54:15 2014 +0200
@@ -331,7 +331,9 @@
 
     def run(self):
         if os.path.exists(self._indexfilename):
-            os.unlink(self._indexfilename)
+            f = open(self._indexfilename, 'w')
+            f.write('# empty\n')
+            f.close()
 
         # here no extension enabled, disabled() lists up everything
         code = ('import pprint; from mercurial import extensions; '