Upgrading to Rails 3.1.1 on Windows

I just upgraded my Windows XP computer to use Ruby on Rails 3.1.1 with MySQL 5.1. Here’s how I did it:

0. pik is already installed via gem
1. Download rubyinstaller-1.9.2-p290.exe
2. Install ruby at c:\ruby\1.9.2-p290
3. pik add c:\ruby\1.9.2-p290\bin
4. Download DevKit-tdm-32-4.5.2-20110712-1620-sfx.exe
5. Install DevKit at c:\ruby\1.9.2-p290\DevKit
6. PATH=C:\ruby\1.9.2-p290\DevKit;%PATH%
7. pik use ruby 1.9.2p290
8. gem install json –platform=ruby
9. gem install mysql2 — ‘–with-mysql-lib=”c:\Program Files\MySQL\MySQL Server 5.1\lib\opt” –with-mysql-include=”c:\Program Files\MySQL\MySQL Server 5.1\include”‘

and now create a new rails app as usual:
rails new -d mysql
bundle install

and everything works!