Commento is a Go-based application that uses PostgreSQL for the backend database. One of the benefits of Go is that it produces statically linked binaries that require no runtime environments (other than the operating system itself) or dependencies. This greatly simplifies distribution, deployment, and upgrades.
You don't need to install Go and other build dependencies to self-host Commento; you'll only need those if you're compiling Commento from source.
If you're interested in contributing to Commento, please start here.