diff --git a/inferior-shell.asd b/inferior-shell.asd
index ce5b47ed5e2c1e4b922a9d29e3748de5f18d5585..d9e1f0155af1b4a54827390f5ed794832b907f4b 100644
--- a/inferior-shell.asd
+++ b/inferior-shell.asd
@@ -1,10 +1,12 @@
 ;;; -*- Lisp -*-
+(in-package :asdf)
 
 (defsystem :inferior-shell
-  :defsystem-depends-on (:asdf)
-  :depends-on (:asdf :xcvb-utils :fare-quasiquote-extras :fare-mop
+  :defsystem-depends-on (:asdf :asdf-driver)
+  :depends-on (:asdf-driver :fare-utils :alexandria :fare-quasiquote-extras :fare-mop
                #+sbcl :sb-posix)
   :description "spawn local or remote processes and shell pipes"
+  :around-compile "asdf-driver:call-with-safe-io-syntax"
   :components
   ((:file "pkgdcl")
    (:file "process-spec" :depends-on ("pkgdcl"))
@@ -17,5 +19,5 @@
    (:file "run-sbcl" :depends-on ("process-spec" "macros" "run-generic"))))
 
 (defmethod perform ((op test-op) (system (eql (find-system :inferior-shell))))
-  (asdf:load-system :inferior-shell-test)
-  (funcall (asdf::find-symbol* :test-suite :inferior-shell-test)))
+  (load-system :inferior-shell-test)
+  (symbol-call :inferior-shell-test :test-suite))
diff --git a/pkgdcl.lisp b/pkgdcl.lisp
index 16d6fb669f0fee8ccd1ee54ec573e2382171a1ca..ab1f9d0ad7ff05ce4eb0c4838ea20034c53a71f9 100644
--- a/pkgdcl.lisp
+++ b/pkgdcl.lisp
@@ -2,8 +2,9 @@
 
 (in-package :cl)
 
-(defpackage :inferior-shell
-  (:use :cl :xcvb-utils :optima :named-readtables :fare-mop)
+(asdf/package:define-package :inferior-shell
+  (:mix :fare-utils :alexandria :asdf/driver)
+  (:use :cl :optima :named-readtables :fare-mop)
   (:export
    #:run #:run/s #:run/ss #:run/lines
    #:simple-command-line-token #:token-string
diff --git a/process-spec.lisp b/process-spec.lisp
index e8dfafff8188c10badd3df6b23799b78a8b4c1fb..cc3604f6f57c02a1409c0d9bc5c1aa74c0914d85 100644
--- a/process-spec.lisp
+++ b/process-spec.lisp
@@ -73,7 +73,7 @@
   (:documentation "Print a process specification in a way suitable for consumption by a shell"))
 
 (defmethod print-process-spec ((r file-redirection) &optional s)
-  (with-output-stream (s)
+  (with-output (s)
     (with-slots (fd symbol pathname) r
       (when (eq symbol '!)
         (error "Can't print ad-hoc redirection ~S" r))
@@ -84,7 +84,7 @@
       (escape-command (list pathname) s))))
 
 (defmethod print-process-spec ((r fd-redirection) &optional s)
-  (with-output-stream (s)
+  (with-output (s)
     (with-slots (new-fd old-fd) r
       (check-small-fd old-fd)
       (check-small-fd new-fd)
@@ -94,7 +94,7 @@
         (otherwise (format s "~D>& ~D" new-fd old-fd))))))
 
 (defmethod print-process-spec ((r close-redirection) &optional s)
-  (with-output-stream (s)
+  (with-output (s)
     (with-slots (old-fd) r
       (check-small-fd old-fd)
       (case old-fd
@@ -330,14 +330,14 @@
 
 (defmethod print-process-spec ((spec command-spec) &optional s)
   (with-slots (arguments redirections) spec
-    (with-output-stream (s)
+    (with-output (s)
       (escape-command arguments s)
       (when redirections
         (loop :for r :in redirections :do
           (princ " " s) (print-process-spec r s))))))
 
 (defun print-process-sequence-joined (spec separator empty s &optional tail)
-  (with-output-stream (s)
+  (with-output (s)
     (let ((processes (sequence-processes spec)))
       (if processes
           (progn