[Chicken-users] Debian 9 amd64 chicken-bin 4.11.0-1 cannot import from undefined module process-context

[David Christensen]

chicken-users:

I am Chicken noob with (e-mail addresses redacted):

2019-09-17 22:06:21 root@tinkywinky ~
# cat /etc/debian_version
9.11

2019-09-17 22:10:03 root@tinkywinky ~
# uname -a
Linux tinkywinky 4.9.0-11-amd64 #1 SMP Debian 4.9.189-3 (2019-09-02) 
x86_64 GNU/Linux

2019-09-17 22:15:35 root@tinkywinky ~
# dpkg-query -s chicken-bin
Package: chicken-bin
Status: install ok installed
Priority: optional
Section: lisp
Installed-Size: 5765
Maintainer: Davide Puricelli (evo) <address@hidden>
Architecture: amd64
Source: chicken
Version: 4.11.0-1
Replaces: chicken, chicken-dev
Depends: libc6 (>= 2.4), libchicken8 (>= 4.11.0), libchicken-dev (= 
4.11.0-1)
Conflicts: chicken, chicken-dev
Description: Practical and portable Scheme system - compiler
 CHICKEN is a Scheme compiler which compiles a subset of R5RS into C.
 It uses the ideas presented in Baker's paper "Cheney on the MTA", and
 has a small core and is easily extendable.
 .
 This package contains the compiler.
Homepage: http://www.call-cc.org


I am attempting to follow:

http://wiki.call-cc.org/man/5/Getting%20started


I have created a Scheme program source file:

2019-09-17 22:07:12 dpchrist@tinkywinky ~/sandbox/chicken-scheme
$ cat palindrome.scm
;;; http://wiki.call-cc.org/man/5/Getting%20started
;;; downloaded 2019-09-17

(import (chicken process-context)) ; for "command-line-arguments"

(define (palindrome? x)
  (define (check left right)
    (if (>= left right)
        #t
        (and (char=? (string-ref x left) (string-ref x right))
             (check (add1 left) (sub1 right)))))
  (check 0 (sub1 (string-length x))))

(let ((arg (car (command-line-arguments))))
  (display
   (string-append arg
                  (if (palindrome? arg)
                      " is a palindrome\n"
                      " isn't a palindrome\n"))))


When I try to compile:

2019-09-17 22:07:15 dpchrist@tinkywinky ~/sandbox/chicken-scheme
$ csc -o palindrome palindrome.scm

Syntax error (import): cannot import from undefined module

        process-context

        Expansion history:

        <syntax>    (##core#begin (import (chicken process-context)))
        <syntax>    (import (chicken process-context))    <--

Error: shell command terminated with non-zero exit status 17920: 
'/usr/bin/chicken' 'palindrome.scm' -output-file 'palindrome.c'


I appear to be missing the module "chicken process-context", which is 
supposed to be included (?):

http://wiki.call-cc.org/man/5/Included%20modules


Suggestions?


David