(defpackage #:portaCL (:use #:cl) (:export ;; working with feature expressions #:define-feature-test #:featurep ;; feature-expression-based control flow #:feature-if #:feature-when #:feature-unless #:feature-cond #:feature-econd ;; failure modes #:not-implemented #:not-supported #:not-necessary ;; ASDF support #:port-file #:port-module ;; Enhanced feature reader support #:install-feature-readers))