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| -rw-r--r-- | src/propspec.lisp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/propspec.lisp b/src/propspec.lisp index 2ef61d2..57209fc 100644 --- a/src/propspec.lisp +++ b/src/propspec.lisp @@ -122,6 +122,8 @@ property combinators you intend to use in specifying propspecs. Consfigurator uses this information when starting up remote Lisp images to effect deployments: it sends over the ASDF systems specified by SYSTEMS." + (when (null systems) + (simple-program-error "Cannot pass NIL to IN-CONSFIG.")) (setq systems (ensure-cons systems)) (let ((sym (intern "*CONSFIG*"))) `(eval-when (:compile-toplevel :load-toplevel :execute) |