> command line interfaces should be written in bash, perl, python, go

Says whom?

Basically, anything that can be compiled into a single binary, or has the least dependencies and best portability.

Right. Hard to argue with that. But if you're going to say that to me, then you'll also need to tell that to everyone releasing software that gets installed via `npm install -g` or `gem install`, too!

Absolutely and that's why orgs like Heroku,Github and co are moving all their cli tools to Go.