Comment 2 for bug 455816

To test the fix:

18:23 < cjwatson> I think what you can do is build the package, put the udeb
                  somewhere wgettable, write a preseed file that says 'd-i
                  preseed/early_command string wget
                  http://url/to/eucalyptus-udeb_1.6~bzr931-0ubuntu7_i386.udeb
                  && udpkg -i eucalyptus-udeb_1.6~bzr931-0ubuntu7_i386.udeb'
18:23 < cjwatson> but then the tricky bit
18:24 < cjwatson> you have to start the installer in expert mode, run through
                  it until right before the "Select cloud installation mode"
                  menu item, *but then* scroll down the menu and select
                  "Download debconf preconfiguration file"
18:24 < cjwatson> after that, you can select "Change debconf priority", set it
                  back to high, and continue as normal
18:24 < cjwatson> (obviously I meant 0ubuntu8 not 0ubuntu7, you get the idea)