caskroom/homebrew-cask — pull request #4896 by rolandwalker (2014-06-14 19:50:42+00:00)
Title: DSL: add `depends_on` stanza

For forward-compatibility, intentionally undocumented. Currently
works only as a synonym: `depends_on :formula` substitutes for
`depends_on_formula`, which is intended to be removed.

However, this PR also provides additional `depends_on` keys for
future expansion of functionality:
- `:cask`
- `:macos`
- `:arch`
- `:x11`
- `:java`

The symbol names were chosen to match those used in Homebrew Formulae.

References: #4688