bundler.txt

André Arko (@indirect)
Bundler

gembundler.com (docs)
#bundler

Passenger:
  bundle install => Errno::EACCES
  don't sudo. instead:
  bundle install --path vendor/bundle

Frozen mode: compares Gemfile with Gemfile.lock, throws exception if gem not found/installed
  bundle install --frozen

bundle install --deployment
  encapsulates: --path vendor/bundle, --frozen

Simplest case, passenger, in your deploy script:
<update code>
bundle install --deployment
<bounce app server>

Other cases: Unicorn, Thin, Mongrel...:
  Add "gem 'unicorn'" to Gemfile
  deploy script:
    <update code>
    run bundle install --deployment
    bundle exec unicorn_rails (or mongrel_rails, etc)

In the case of a firewall (bofh):
  bundle pack (from dev machine, copies all gems into vendor/cache)
  bundler will compile gems from the packed versions on the server.

With Capistrano, you can instead say require 'bundler/capistrano' in recipe and you are done. No bundle install etc.

Variables available, see cap -e bundle:install

For 1.1: speed
         "standalone mode": does not require bundler to be in system
         if using git gem, gem 'rails', :git => 'git://github.com/rails/rails.git'
         will be instead gem 'rails', :github => 'rails/rails'
         Can use 1.1 now: gem install bundler --pre

Use mysql2!