Rails bundle install production only

Question

I'm still new to rails/ruby/bundler and am a little confused.

In our config/application.rb file there's this bundler segment:

if defined?(Bundler)            # If you precompile assets before deploying to production, use this line   Bundler.require(*Rails.groups(:assets => %w(development test)))   # If you want your assets lazily compiled in production, use this line   # Bundler.require(:default, :assets, Rails.env) end 

and in our Gemfile we use different groups, e.g.

group :development, :test do   gem "rspec-rails", ">= 2.7.0", :group => [:development, :test]   gem 'shoulda-matchers'   gem 'watchr'   gem 'spork', '~> 1.0rc'   gem 'spectator'                             gem 'debugger'   gem 'wirble' end 

But when I run RAILS_ENV=production bundle install (or bundle install --deployment), it still installs gems from the development/test group...

Why does this happens or how can I make this work properly?

Answer 1

Take a look at --without option:

bundle install --without development test

By default Bundler installs all gems and your application uses the gems that it needs. Bundler itself knows nothing about Rails and the current environment.

Answer 2

An alternative solution is to use the bundle-only ruby gem. It can be used as follows:

> gem install bundle-only > bundle-only production 

This library does not pollute your bundler configs or augment Gemfile.lock; it is a simple alternative to the built in bundle --without every other group option that bundler provides.