lib/bundler/setup.rb


require 'bundler/shared_helpers'

if Bundler::SharedHelpers.in_bundle?
  require 'bundler'
  if STDOUT.tty?
    begin
      Bundler.setup
    rescue Bundler::BundlerError => e
      puts "\e[31m#{e.message}\e[0m"
      puts e.backtrace.join("\n") if ENV["DEBUG"]
      if e.is_a?(Bundler::GemNotFound)
        puts "\e[33mRun `bundle install` to install missing gems.\e[0m"
      end
      exit e.status_code
    end
  else
    Bundler.setup
  end

  # Add bundler to the load path after disabling system gems
  bundler_lib = File.expand_path("../..", __FILE__)
  $LOAD_PATH.unshift(bundler_lib) unless $LOAD_PATH.include?(bundler_lib)
end