Easy.
sudo apt-get install ruby libhaml-ruby
I also tried using HAML, but I prefer shpaml. Compare:
%h1 {{ object.question }} {% if error_message %} %p %strong {{ error_message }} {% endif %} %form{:action => "/polls/{{ object.id }}/vote/", :method => "post"} {% csrf_token %} {% for choice in object.choice_set.all %} %input{:id => "choice{{ forloop.counter }}", :name => "choice", :type => "radio", :value => "{{ choice.id }}"}/ %label{:for => "choice{{ forloop.counter }}"} {{ choice.choice }} %br/ {% endfor %} %input{:type => "submit", :value => "Vote"}/ | h1 | {{ object.question }} {% if error_message %} p strong | {{ error_message }} {% endif %} form action="/polls/{{ object.id }}/vote/" method="post" {% csrf_token %} {% for choice in object.choice_set.all %} > input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" label for="choice{{ forloop.counter }}" | {{ choice.choice }} > br {% endfor %} > input type="submit" value="Vote" |
Also, sass has the nifty --watch option, which automatically updates your css files when necessary. HAML does not have this feature currently. Shpaml does not need this; it is automatically run when necessary.
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