Re: Using org-babel with Scheme

[Eric Schulte <eric.schulte@gmx.com>]

Kyle Andrews <kcandrew@mtu.edu> writes:

> I am having both of these issues on Emacs 24.  Emacs crashes sometimes on
> geiser and babel won't evaluate scheme code as Racket code despite setting
> 'scheme-program-name and 'org-babel-scheme-cmd to "racket". However, Guile
> will work if both of those variables hold "guile".
>
> Any new developments?
>

I haven't had time to look into this.  I imagine the first issue is a
problem with Geiser.  As for the second issue, note that the value of
the 'org-babel-scheme-cmd variable is only used when external execution
is requested (e.g., when session is set to "none"), otherwise session
evaluation is used (likely using Geiser if Geiser is installed).

Sorry I do not have more time to look into this at the moment.

I you feel like looking to the code, a good starting place would be to
run the command `edebug-eval-top-level-form' within the definition of
`org-babel-execute:scheme' in ob-scheme.el, then running a code block
and stepping through its evaluation.

Best,

>
> On Wed, Feb 15, 2012 at 9:33 AM, Eric Schulte <eric.schulte@gmx.com> wrote:
>
>> Leo Alekseyev <dnquark@gmail.com> writes:
>>
>> > Is anyone on the list using a recent org-babel with Scheme?  I
>> > recently started working through SICP, and I'm running into issues
>> > evaluating scheme src  blocks.  Org-babel error buffer pops up with
>> > "ERROR: Wrong number of arguments to #<primitive-generic display>",
>> > and the minibuffer prompts me for a lisp expression.  Is there
>> > anything I need to configure beyond   (org-babel-do-load-languages
>> > 'org-babel-load-languages  '((scheme . t)))?
>> >
>> > (Running latest org from git in Emacs 24; have Chicken scheme and
>> > guile installed).
>> >
>>
>> I loaded the ob-scheme.el directly (which should be the same as loading
>> it with org-babel-do-load-languages as above) and the following works
>> for me.
>>
>> #+begin_src scheme
>>  (+ 1 1 1)
>> #+end_src
>>
>> #+RESULTS:
>> : 3
>>
>> I have guile installed and I have the `scheme-program-name' variable set
>> to "guile elsewhere in my .emacs init.  I imagine setting the above
>> variable should enable scheme evaluation.
>>
>> Best,
>>
>> while looking into this I did notice that when launching Geiser (a nice
>> slime-like scheme evaluator) I would sometimes crash my entire Emacs
>> process by pressing C-g when Geiser prompts for a scheme executable.  I
>> imagine this is unrelated to your problem, but was certainly surprising.
>>
>> >
>> > --Leo
>> >
>>
>> --
>> Eric Schulte
>> http://cs.unm.edu/~eschulte/
>>
>>

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/