/etc/cron.daily/apt:
Traceback (most recent call last):
  File "/usr/sbin/update-apt-xapian-index", line 63, in <module>
    import axi.indexer
  File "/usr/lib/python2.7/dist-packages/axi/indexer.py", line 29, in <module>
    import xapian
ImportError: No module named xapian