Not all of Alexandria's dependencies are available within the Debian
packaging system. Here are some of the extra steps you might have to
take to enjoy all of the features of this program.


= Optional Dependencies

== Ruby/ZOOM and Yaz

For Z39.50 support and and the "Library of Congress" and "British
Library" book providers you will need Ruby/ZOOM.  There is no recent
deb file for Ruby/ZOOM, so it must be installed as a gem. (Kind of
like deb/apt for Ruby: this is sort of anathema to many in Debian
because it tends to conflict with the way Debian does things, and we
at the Alexandria project are looking into providing a deb file
installation for libzoom-ruby instead.)

Firstly, install the prerequisites:

  sudo aptitude install ruby1.8-dev libruby1.8 libyaz libyaz-dev

Then if you haven't installed it already, install rubygems:

  sudo aptitude install rubygems

Finally, install the gems; Alexandria needs 'zoom' and 'marc'
(ruby-zoom used to have its own implementation of marc, but now we use
the marc gem):

  sudo gem install --remote zoom
  sudo gem install --remote marc