Setup rbenv and Ruby using capistrano-rbenv. To install them, use "cap deploy:setup" !

deploy.rb

# rbenv setting
require 'capistrano-rbenv'
set :rbenv_ruby_version, '1.9.3-p374'


namespace :rbenv do
  task :setup_shellenv do
    set :default_environment, {
      'RBENV_ROOT' => "#{rbenv_path}",
      'PATH' => "#{rbenv_path}/shims:#{rbenv_path}/bin:$PATH"
    }
  end
  after 'multistage:ensure', 'rbenv:setup_shellenv'

  desc "Install build dependencies of Ruby (for CentOS 5.x)"
  task :install_build_depends do
    rpms = %w(http://dl.fedoraproject.org/pub/epel/5/x86_64/perl-Error-0.17010-1.el5.noarch.rpm
              http://dl.fedoraproject.org/pub/epel/5/x86_64/perl-Git-1.7.4.1-1.el5.x86_64.rpm
              http://dl.fedoraproject.org/pub/epel/5/x86_64/git-1.7.4.1-1.el5.x86_64.rpm
              http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/autoconf26x-2.63-4.ius.el5.noarch.rpm)

    filenames = []
    rpms.each do |url|
      filename = "/tmp/#{File.basename(url)}"

      run "wget -O #{filename} #{url}"
      filenames << filename
    end

    run "#{sudo} rpm -ivh #{filenames.join(" ")} || true"
    run "rm #{filenames.join(" ")}"
  end
  before 'rbenv:setup', 'rbenv:install_build_depends'

  desc "Initialize rbenv (applying installed gems)"
  task :init do
    run "rbenv init - | sh"
  end
  after 'roundsman:chef:install', 'rbenv:init'
end