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Get the latest Rails up and running locally
# this was for Rails 3.2.0 before the RC dropped
rvm gemset create rails-master
rvm gemset use rails-master
cd ~/src
git clone git://github.com/rails/arel.git
cd arel
gem build arel.gemspec
gem install arel-*.gem
cd ..
git clone git://github.com/rails/journey.git
cd journey
gem build journey.gemspec
gem install journey-*.gem
cd ..
git clone git://github.com/rails/rails.git
cd rails
cat RAILS_VERSION | xargs ruby install.rb
ruby -r 'rails' -e 'puts Rails::VERSION::STRING'
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