This script is for installing Bazel Build Tool into MacOS through brew. The motivation of this project is to install any version of Bazel Build Tool into MacOS. The offical brew repository only maintains the the latest version of Bazel, so that it is difficult to install specific version of Bazel.
$ brew tap sonaproject/bazelbuild
$ brew tap-pin sonaproject/bazelbuild
$ brew install bazel@VERSION
VERSION needs to be replaced by the version of bazel that you would like to install.