(ros:include '("list-env" "util-config") "use-env")
(defpackage :roswell.use.env
  (:use :cl :roswell.util.config))
(in-package :roswell.use.env)

(defun env (impl version &rest r)
  (declare (ignore impl version))
  (let ((conf (load-config ".roswellenv")))
    (cond
      ((null r)
       (roswell.list.env:env)
       t)
      ((member (first r) '("no" "-") :test 'equal)
       (setf conf (unconfig conf "roswellenv"))
       (save-config ".roswellenv" conf)
       t)
      ((find (first r) (roswell.list.env:env-list) :test 'equal)
       (setf conf (config conf "roswellenv" (first r)))
       (save-config ".roswellenv" conf))
      (t (error "env ~A not exists." (first r))))))