Currently, installing Flapjack is pretty ghetto. It's distributed as a RubyGem, and has a heavy set of dependencies.

Native packages are in the works, so please bear with us until a less bongtastic install procedure is available.

If you would like to contribute packages for your operating system, please check out the packaging guide.

Add the following lines to /etc/apt/sources.list.d/flapjack.list:

deb http://ppa.launchpad.net/ubuntu-ruby-backports/ubuntu hardy main
deb http://ppa.launchpad.net/auxesis/ppa/ubuntu hardy main

Add GPG keys for the repos:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 288BA53BCB7DA731

Update your package list:

sudo apt-get update 

Install Ruby dependencies:

sudo apt-get install build-essential

Install rubygems + beanstalkd:

sudo apt-get install rubygems beanstalkd

To start beanstalkd, set ENABLED=1 in /etc/default/beanstalkd.

Start beanstalkd:

sudo /etc/init.d/beanstalkd start

Add the Gemcutter RubyGems server to your Gem sources:

sudo gem sources -a http://gemcutter.org

Install the Flapjack gem:

sudo gem install flapjack

Then run the magic configuration script to set up init scripts:

sudo install-flapjack-systemwide

The script will prompt you if it wants to do anything destructive.