Terminology

We are escaping the world of task runners and scripts. We are using a compiled, strongly typed language to automate our builds.

Nautilus offers build automation, which is part of Continuous Integration automation.

Developers using Nautilus will create a class containing instructions for the build. It's not a build script; it's the build instructions.

When you call Nautilus, specify the build's starting point or entry point. These are not targets; these are the public methods that will be called by the executable.

When Nautilus executes your build instructions, it will call methods. These are not tasks; they're just methods. Instead of building lists of dependent tasks, just call private methods from your public methods. Y'know, C#.