find-package

(find-package designator)

Lite: rontolisp has no package objects, so the returned "package" is the upcased canonical package name as a keyword, and nil for an unknown package. designator is a keyword, a string, a symbol, or nil (which designates the package named "NIL", so it answers nil); package names are case-sensitive, exactly as in Common Lisp.

A literal designator is folded at compile time. A computed one is answered from the live registry on the interpreter, and on the compiled backends from a table of the program's packages baked in at compile time — so a package created after compilation is invisible there.