Homebrew install specific version of formula?

Question

How do I install a specific version of a formula in homebrew? For example, postgresql-8.4.4 instead of the latest 9.0.

Answer 1

brew versions and brew install https://raw.githubusercontent.com/Homebrew/homebrew-core//Formula/.rb not supported now.

You can try like this:

$ brew extract --version 5.6.2 gradle vitahlin/core
$ brew install gradle@5.6.2