Add gem sources

$ gem sources -a  http://gems.whatever.com

Get Homebrew

$ sudo mkdir -p /usr/local 
$ sudo chown -R `whoami` /usr/local
$ curl -L http://github.com/mxcl/homebrew/tarball/master | tar xz --strip 1 -C /usr/local

gistfile6.txt

$ brew install mysql:
$ mysql_install_db --basedir=/usr/local/Cellar/mysql/5.1.41
$ launchctl load -w /usr/local/Cellar/mysql/5.1.41/com.mysql.mysqld.plist
$ (ok, so launching Mysql on startup doesn't quite seem to work with homebrew)

$ export ARCHFLAGS="-arch i386 -arch x86_64"
$ gem install mysql -- --with-mysql-dir=/usr/local--with-mysql-config=/usr/local/bin/mysql_config

$ sudo gem install gemcutter bundler

Install Git

$ brew install git

SSH Keys

$ ssh-keygen -t rsa -C "you@your-domain.com"
$ cat ~/.ssh/id_rsa.pub | pbcopy
$ Add (or edit) a public key in your GitHub account (https://github.com/account)

$ git config --global user.name "Your Name"
$ git config --global user.email "you@your-domain.com"

Update RubyGems

$ curl -O http://gemcutter-production.s3.amazonaws.com/rubygems/rubygems-1.3.5.tgz
$ tar xzvf rubygems-1.3.5.tgz
$ cd rubygems-1.3.5
$ sudo ruby setup.rb
$ sudo gem update
$ rm -rf rubygems-1.3.5.tgz
$ rm -rf rubygems-1.3.5