Groups

Configure groups in Gemfile and then selectively install them.

Typically you’ll use no group, test, developer or production.

And you’ll select using without. I don’t see the point of with, as a group will be installed by default even if not in with.

Set up Gemfile

From Groups doc.

The examples are for setting up a Gemfile. You can also do this from the CLI - see install cheatsheet.

Set up development and test gems

• Gemfile

    # These gems are in the :default group
    gem 'nokogiri'
    gem 'sinatra'
  
    gem 'wirble', group: :development
  
    group :test do
    gem 'faker'
    gem 'rspec'
    end
  
    group :test, :development do
    gem 'capybara'
    gem 'rspec-rails'
    end
  
    gem 'cucumber', group: [:cucumber, :test]
  

Set up production gems

• Gemfile

    source 'https://rubygems.org'
  
    gem 'rails', '3.2.2'
    gem 'rack-cache', require: 'rack/cache'
    gem 'nokogiri', '~> 1.4.2'
  
    group :development do
    gem 'sqlite3'
    end
  
    group :production do
    gem 'pg'
    end
  

Install from Gemfile

After setting up your Gemfile as in the section above, you can run use bundle with the config and install subcommands to install those groups.

Configure

Target production and ungrouped gems only.

$ bundle config set --local without test development

Or target test, development and ungrouped gems only.

$ bundle config set --local without production

Install

Then when you run

$ bundle install

You won’t get the excluded groups.

Config values

Example:

$ bundle config set --local without 'test'

Then see:

• .bundle/config

    ---
    BUNDLE_WITHOUT: "test"
  

Deprecated

Don’t use the deprecated --with or --without flags, which was like this:

$ bundle install --without test development