namespace :qu do

  task :start  => :environment do
    queues = (ENV['QUEUES'] || ENV['QUEUE']).to_s.split(',')

    Qu::Worker.new(*queues).start
  end

end

namespace :qu do

  describe "Start a worker"
  task :work  => :environment do
    queues = (ENV['QUEUES'] || ENV['QUEUE'] || 'default').to_s.split(',')

    Qu::Worker.new(*queues).start
  end

end

Rename rake task to qu:work and set default queue
Rename rake task to qu:work and set default queue