In talking with ThomasAH I said:

  , ack on postgres full text indexing. I was just searching for full
text indexing in roundup docs and I don't see much on configuring
postgres or xapian full text searches.
Would it be useful to have a [main] indexer config value that can turn
of xapian even if it is installed? So
  [main]
  indexer = native (anydbm or rdbm text search)
  indexer= xapian (xapian indexer)
  indexer = woosh (woosh indexer if I install the patches to get this
working)

At least one set of patches for python.org
(http://hg.python.org/tracker/roundup/rev/b1e85f86fe8a) makes it looks
like they had to cut out code to disable xapian indexer.

 ThomasAH: rouilj: yes, now I had to uninstall python-xapian (or patch
 the code) to disable it ... same with sqlite2 support, which I
 sometimes needed to import old tracker databases

Not sure about an option to force sqlite database use but for indexer
we should have it.

Issue: