* Install Homebrew from https://brew.sh/
* Install the latest version of Ruby: `brew install ruby`
-* Install ImageMagick: `brew install imagemagick`
-* Install libxml2: `brew install libxml2`
-* Install libgd: `brew install gd`
-* Install Yarn: `brew install yarn`
-* Install pngcrush: `brew install pngcrush`
-* Install optipng: `brew install optipng`
-* Install pngquant: `brew install pngquant`
-* Install jhead: `brew install jhead`
-* Install jpegoptim: `brew install jpegoptim`
-* Install gifsicle: `brew install gifsicle`
-* Install svgo: `brew install svgo`
+* Install other dependencies: `brew install imagemagick libxml2 gd yarn pngcrush optipng pngquant jhead jpegoptim gifsicle svgo`
* Install Bundler: `gem install bundler` (you might need to `sudo gem install bundler` if you get an error about permissions - or see note below about [developer Ruby setup](#rbenv))
You will need to tell `bundler` that `libxml2` is installed in a Homebrew location. If it uses the system-installed one then you will get errors installing the `libxml-ruby` gem later on<a name="macosx-bundle-config"></a>.