Megatest

      exn
      #f
    (configf:alist->config
     (with-input-from-file fname read))))

(define (configf:write-alist cdat fname)
  (if (not (common:faux-lock fname))
      (debug:print 0 *default-log-port* "WARNING: could not get lock on " fname))
      (debug:print 0 *default-log-port* "INFO: Could not get lock on " fname))
  (let* ((dat  (configf:config->alist cdat))
         (res
          (begin
            (with-output-to-file fname ;; first write out the file
              (lambda ()
                (pp dat)))
            

	      (set! *toppath* #f) ;; force it to be false so we return #f
	      #f
	      ))
        ;; one more attempt to cache the configs for future reading
        (let* ((cachefiles   (launch:get-cache-file-paths areapath toppath target mtconfig))
               (mtcachef     (car cachefiles))
               (rccachef     (cdr cachefiles)))
          (if (and rccachef *runconfigdat*) (configf:write-alist *runconfigdat* rccachef))
          (if (and mtcachef *configdat*)    (configf:write-alist *configdat* mtcachef))
          (if (and rccachef *runconfigdat* (not (file-exists? rccachef))) (configf:write-alist *runconfigdat* rccachef))
          (if (and mtcachef *configdat*    (not (file-exists? mtcachef))) (configf:write-alist *configdat* mtcachef))
          (if (and rccachef mtcachef *runconfigdat* *configdat*)
              (set! *configstatus* 'fulldata)))

	;; if have -append-config then read and append here
	(let ((cfname (args:get-arg "-append-config")))
	  (if (and cfname
		   (file-read-access? cfname))