Setting up Rails on a Clean Install of Mac OS X Lion

I realise that OSX does not have a registry to clog up but I have just reinstalled Lion on my Macbook Air; probably a hang up from Windows. This is a checklist for installing Homebrew >> Rails.

1. Install XCode 4.1 (There are issues with the 4.2 compiler and certain rubies and gems)
2. Install Homebrew
   1. https://github.com/mxcl/homebrew/wiki/installation
   2. /usr/bin/ruby -e "$(curl -fsSL https://raw.github.com/gist/323731)"
3. Ensure Homebrew apps are in path before Mac apps
   1. export PATH=/usr/local/bin:$PATH or edit /etc/paths
4. Install Git
   1. brew install git (thanks Brendan)
5. Install SSH keys
   1. Generate or copy from ~/.ssh from a backup.
6. Install RVM
   1. https://rvm.beginrescueend.com/rvm/install/
   2. bash < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )
   3. Add [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"  # This loads RVM into a shell session. to bash_profile
   4. Restart shell
   5. Run rvm | head -1
7. Install latest Ruby and set as default
   1. rvm install 1.9.3 (make sure you are using Xcode 4.1)
   2. rvm --default use 1.9.3
8. Install Rails
   1. gem install rails

I keep all my .config files in Dropbox and run a bash script to create aliases in my home folder.