maybe this could be fixed with a --force flag ? otherwise we should somehow check for exit code and continue accordingly, or run ruby/gems setup regardless of brew bundle exit code
Installing slack cask. It is not currently installed.
==> Satisfying dependencies
==> Downloading https://downloads.slack-edge.com/mac_releases/Slack-2.6.3-macOS.zip
==> Verifying checksum for Cask slack
==> Installing Cask slack
Error: It seems there is already an App at '/Applications/Slack.app'.
Error: Install incomplete.
Installing slack has failed!
Installing Realm Browser app. It is not currently installed.
==> Downloading Realm Browser
==> Installed Realm Browser
Error: Kernel.exit
Installing Realm Browser
Homebrew Bundle failed! 3 Brewfile dependencies failed to install.
Kernel.exit
failed