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

[Mario Domenech Goulart]

Hi David,

On Tue, 17 Sep 2019 22:22:26 -0700 David Christensen <address@hidden> wrote:

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

Welcome!

> 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?

The problem is that you are using CHICKEN 4 to compile code for CHICKEN
5.  There are some incompatibilities.  One of the is the import
declarations for modules.

Installing CHICKEN 5 from sources on Linux is not difficult and doesn't
require much besied what is required to install eggs (the only extra
requirement is GNU make).  In case you wnat to do that, here are the
steps that should work on Debian:

  $ wget http://code.call-cc.org/releases/5.1.0/chicken-5.1.0.tar.gz
  $ tar xzvf chicken-5.1.0.tar.gz
  $ cd chicken-5.1.0
  $ make PLATFORM=linux PREFIX=$HOME/local/chicken-5.1.0 install

That will install CHICKEN 5.1.0 under $HOME/local/chicken-5.1.0.

To have the CHICKEN 5 tools in your environment's PATH, you can do
something like

  $ export PATH=$PATH:$HOME/local/chicken-5.1.0/bin

assuming you are using Bash.

On the CHICKEN 4 -> CHICKEN 5 migration, you might find
http://wiki.call-cc.org/porting-c4-to-c5 helpful.

If you have questions, don't hesitate to ask them here or in the IRC
channel (Freenode, #chicken).

All the best.
Mario
-- 
http://parenteses.org/mario