set :chruby_path, '/etc/profile.d/chruby.sh'

task :chruby, :env do |_, args|
  unless args[:env]
    print_error "Task 'chruby' needs a Ruby version as an argument."
    print_error "Example: invoke :'chruby[ruby-1.9.3-p392]'"
    die
  end

  comment "chruby to version: '#{args[:env]}'"
  command %(
    if [[ ! -s "#{fetch(:chruby_path)}" ]]; then
      echo "! chruby.sh init file not found"
      exit 1
    fi
  )
  command "source #{fetch(:chruby_path)}"
  command "chruby '#{args[:env]}' || exit 1"
end