test.haml

:style
  body
    :background red
  
  #foo
    :color blue

:ruby
  require 'foo'
  
  puts "bar"

:javascript
  console.log('foo');

%head
  %style
    :sass
      body
        :background red

      #foo
        :color blue
    
  %script{:src => '/jquery.js'}
  
  :javascript
    console.log('foo');
  

%body
  :plain
    this is plain text