Re: [Maxima-discuss] using $load in common lisp via ASDF

[Robert D. <rob...@gm...>]

On 2015-12-29, Darren Irvine <dsi...@gm...> wrote:

> I have started using ASDF to access Maxima within Common Lisp (ccl)

Hey, that's terrific. What are you working on, if I may ask?

By the way, I have figured out a way to patch Quicklisp to load Maxima
packages. As you probably know, Quicklisp = ASDF + a way to download
packages on demand. Does that sound interesting to you?

> (load "~/common-lisp/load-max.lisp")
> (maxima::$load "stringproc")
>
> I get:
>
> Can't throw to tag MAXIMA::MACSYMA-QUIT
>    [Condition of type CCL::CANT-THROW-ERROR]

> On the other hand, it works fine if I first (in-package :maxima) and then
> ($load "stringproc"). I don't understand what makes the difference. The
> problem does not seem to be a general one. I am able to use (maxima::$load
> "mycustompackage") and (maxima::$load "interpol") without getting errors.

Well, the problem is that share/stringproc/cryptools.lisp uses some
Maxima-specific stuff (at least the macro DEFMFUN and maybe other
stuff). So (in-package :maxima) makes DEFMFUN visible. 

I guess this problem can be fixed either putting (in-package :maxima) in
every Maxima file, or by assuming the caller must set the package before
trying to load a Maxima file. I guess I'm leaning towards the latter --
I think it's reasonable for people writing code to be loaded into
Maxima can assume they are in a Maxima environment. Well, come to think
of it, maybe $LOAD should bind *PACKAGE* before loading a Lisp file.
That would fix it, right? In the meantime, though, you'll have to set
the package yourself.

best,

Robert Dodier