Gemfile
source 'https://rubygems.org'
gemspec
gem 'rake'
rails = ENV['RAILS'] || 'master'
if rails == 'master'
arel = ENV['AREL'] || 'master'
arel_opts =
case arel
when /\// # A path
{ path: arel }
when /^v/ # A tagged version
{ git: 'git://github.com/rails/arel.git', tag: arel }
else
{ git: 'git://github.com/rails/arel.git', branch: arel }
end
gem 'arel', arel_opts
end
case rails
when /\// # A path
gem 'activerecord', path: "#{rails}/activerecord"
when /^v/ # A tagged version
git 'git://github.com/rails/rails.git', tag: rails do
gem 'activerecord'
end
else
git 'git://github.com/rails/rails.git', branch: rails do
gem 'activerecord'
end
end