asdf:registered-systems

(asdf:registered-systems)

Returns the downcased names of every registered system, in registration order: systems declared by an asdf:defsystem or a parsed .asd, package-inferred sub-systems that have been derived, and built-in shim systems that have been loaded.

Backend support

Works on all four backends. The interpreter answers its live registry; a compiled program answers the registry baked at compile time.