Building dependency tree
Reading state information... Done
apt-xapian-index is already the newest version (0.45ubuntu4).
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
[andykw:/home/andykw]$ pip install -U -r freeze.lst
Collecting apt-xapian-index==0.45 (from -r freeze.lst (line 1))