Using cask and then brew install I am trying to install gulp - which seems to require first cask:

17:14:34/mozaik-demo $brew install gulp
Error: No available formula for gulp
Searching formulae...
Searching taps...
Caskroom/cask/gulp


Let us install the cask:

17:14:41/mozaik-demo $brew cask install gulp
==&gt; Downloading https://github.com/sindresorhus/gulp-app/releases/download/0.1.0/gulp.app.zip
######################################################################## 100.0%
==&gt; Symlinking App 'gulp.app' to '/Users/steve/Applications/gulp.app'
  gulp staged at '/opt/homebrew-cask/Caskroom/gulp/0.1.0' (830 files, 75M)


But then what is the correct next step? Here is my attempt:

17:15:03/mozaik-demo $brew install gulp
Error: No available formula for gulp
Searching formulae...
Searching taps...
Caskroom/cask/gulp
17:15:09/mozaik-demo $which gulp
You don't need to do brew install gulp after brew cask install gulp. Once brew cask install gulp end, you have your app installed on /Users/steve/Applications/gulp.app, you don't need any extra steps.