The empty codebase

The Unison codebase, when first initialized, contains no definitions in its namespace.

Not even Nat or +!

BEHOLD!!!

.> ls

Technically, the definitions all exist, but they have no names. builtins.merge brings them into existence, under the current namespace:

.foo> builtins.merge
.foo> ls

And for a limited time, you can get even more builtin goodies:

.foo> builtins.mergeio
.foo> ls

More typically, you'd start out by pulling base.