Ruby apps are by far the most time consuming to configure and install. Nothing is simple. Nothing just works.

The whole idea of exposing end users to your apps's depencies and compilation is a broken user hostile model. The potential rabbit hole of versions incompatibilities and mismatches is a time sink that cannot be justified.

Go is by far the simplest hassle free deploy followed by PHP and Python. For a unix command line tool that seeks a userbase beyond Ruby users Go or Python would be the most user friendly choice.