I have currently an ubuntu dapper running ruby, rails and gem.

As gem will need to compile some stuff you should do :

$ apt-get install build-essential

Then at first try I had an error :

Building native extensions.  This could take a while...
extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
    from extconf.rb:1
ERROR:  While executing gem ... (RuntimeError)
ERROR: Failed to build gem native extension.

I found my ruby installation was not complete, then you shall install following packages :

$ apt-get install ruby1.8-dev ruby1.8 ri1.8 rdoc1.8 irb1.8 /
libreadline-ruby1.8 libruby1.8

Installation of typo also needs sqlite3 (you will see, by default the installer creates a database and launchs mongrel)

$ apt-get install libsqlite3-0
$ apt-get install libsqlite3-dev
$ apt-get install sqlite3

Install the ruby sqlite debian packages.

$ apt-get install swig
$ apt-get install libsqlite3-ruby

Now it should work fine :)

$ sudo gem install typo --include-dependencies

$ typo install directory

At this step, the typo installer creates a directory with a full version of typo and embedded rails, creates a database and launch the blog behind mongrel.

To configure Apache, you can find in installer directory and example of the config file need to put in apache. For my configuration with Apache 2 I did the two commands :

$ ap2enmod proxy
$ ap2enmod proxy_http

and change the servername and proxy pass instruction :

ProxyPass / http://localhost:4434/
ProxyPassReverse / http://localhost:4434/

Where 4434 is the port configured by typo during installtion. Now just reload apache and you should see your website with a beautiful azure typo.