Used to manage ruby environment, since it is more beneficial and clean to use non-system one.
Install rbenv and ruby-build
brew install rbenv ruby-build rbenv-vars
Add to .zshrc (or .bashrc) the following:
export RBENV_ROOT=/usr/local/var/rbenv
if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi
Restart shell session. (close shell tab or window and open again).
Install Ruby interpreter
rbenv install 2.2.3
rbenv rehash
Use newely installed Ruby 2.2.3 by default
rbenv global 2.3.3
Install bundler system-wide
gem install bundler
By default move executables installed by bundler to .bin dir
bundle config bin .bin --global
By default install bundler dependencies to vendor/bundle
bundle config path vendor/bundle --global
Add .bin to PATH, so that it would be possible to run commands without bundle exec
export PATH=".bin:$PATH"
To make gem command aware of application specific dependencies, create /usr/local/var/rbenv/vars with the following contents
GEM_PATH=vendor/bundle
Make it aware of rbenv
ln -s /usr/local/var/rbenv ~/.rbenv