Installing Rails 3.1 Using RVM

bash_commands.sh

# Make sure RVM is up-to-date
rvm get head
rvm reload

# Install ruby-1.9.2
rvm install 1.9.2

# Create a new Gemset 
# (Optional, I like it though since makes dependency issues more transparent. EX: rake 0.8.7 vs 0.9.2)
rvm gemset create rails-head

# Switch to the new ruby
# (with new gemset)...
rvm use 1.9.2@rails-head
# (without new gemset)...
rvm use 1.9.2

# Update rubygems if neccessary
gem update --system

# Install bundler gem (I use --pre because I <3 edge stuff)
gem install bundler --pre

# Install rails 
gem install rails --pre

# Thats it! You can now run...
bundle install --without production

# Gotcha's...

# 1) Installing ruby-debug19...
#    The RVM instructions dont work if you use a custom gemset, since the path gets funky (tries to cd @gemset).
#    My fix: gem install ruby-debug19 -- --with-ruby-include="$rvm_src_path/<rvm_ruby_version_name>"
#    So we type:
gem install ruby-debug19 -- --with-ruby-include="$rvm_src_path/ruby-head"

# 2) Currently ruby-debug19 isn't working with rails 3.1.0.rc4 ... bah