This post originated from an RSS feed registered with Ruby Buzz by Robby Russell. Original Post: Using MacPorts Ruby and Rails after Upgrading to OS X Leopard Feed Title: Robby on Rails Feed URL: http://feeds.feedburner.com/RobbyOnRails Feed Description: Ruby on Rails development, consulting, and hosting from the trenches... Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Robby Russell Latest Posts From Robby on Rails

If you previously followed my article, Installing Ruby on Rails and PostgreSQL on OS X, second edition and are now upgrading to OS X Leopard, you’ll want to make a few adjustments to your setup.

First of all, it’s great that Apple has decided to provide Ruby on Rails out of the box.

~ > gem list rails                                                                                                                                                                   
  *** LOCAL GEMS ***

  rails (1.2.3)
      Web-application framework with template engine, control-flow layer,
      and ORM.

~ > gem list|grep '^[a-z]'|wc -l                                                                                                                                                     
      29

It’s really great that Apple shipped Leopard pre-installed with 29 gems, especially if you don’t have your entire Rails stack setup already. In my case and for those that have followed my installation process, you don’t need to switch over to this new development stack (yet). I have a lot of time invested in my fully-functionaly MacPorts installation process (PostgreSQL, MySQL, RMagick, Subversion, Git, etc. Since this all working fine on my machine, I’m not ready to make the switch to Apple’s installation.

Don’t Fix it… if it’s not broken!

So, the the first thing that I did was modify my PATH environment variable, which has /usr/bin as the first path that it’ll look at when you try to run commands like ruby, mongrel_rails, gem, etc. You’ll want to modify this and prepend /opt/local/bin: to the front of PATH in your shell configuration. If you’re using bash, this would be… ~/.bashrc. If you’re using zshell like me, ~/.zshrc.

Now, when you start a new Terminal and run gem list, you’ll see all of the gems that you already have installed.

~ > gem list rails                                                                                                                                   < new-host

*** LOCAL GEMS ***

rails (1.2.5, 1.2.4, 1.2.3, 1.1.6)
    Web-application framework with template engine, control-flow layer,
    and ORM.

Back to my happy gems…

~ > gem list|grep '^[a-z]'|wc -l                                                                                                                                                              < new-host
      72

Great! Now I can get back to work and spend time playing with the new features in Finder, Mail.app, and iChat instead of installing all of the software dependencies that our development projects have. :-)