Rakefile

require 'rake/clean'

STYLUS = FileList['./**/*.styl']
COFFEE = FileList['./**/*.coffee']

CSS = STYLUS.ext('css')
JS  = COFFEE.ext('js')

CLOBBER.include(CSS, JS)

rule '.css' => '.styl' do |t|
   sh 'stylus', t.source
end

rule '.js' => '.coffee' do |t|
   sh 'coffee', '-c', t.source
end

desc "Build all CSS and JavaScript files"
task :default => (CSS + JS)

desc "Continuously watch for changes and rebuild files"
task :watch => [:default] do
    require 'rubygems'
    require 'fssm'

    def rebuild
        sh 'rake'
        puts "    OK"
    rescue
        nil
    end

    begin
        FSSM.monitor(nil, ['**/*.coffee', '**/*.styl']) do
            update { rebuild }
            delete { rebuild }
            create { rebuild }
        end
    rescue FSSM::CallbackError => e
        Process.exit
    end
end

Changes:

• Switched .less for .styl
• Removed .haml
• Remove line noise since stylus and coffee stdout the same information