The linked post is explicitly about that: > Looking at Nu today, you can see some common parts of languages like `if` or `open`, but it doesn’t yet feel like t

The linked post is explicitly about that: > Looking at Nu today, you can see some common parts of languages like `if` or `open`, but it doesn’t yet feel like there’s enough syntax to build up full programs. You can’t define your own commands, your own variables, and you can’t build out a project across multiple files. We’re working to address all of these limitations so that Nu can function not only for one-liners, but also for much more.