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Re: library vs define-module issue

From: Zelphir Kaltstahl
Subject: Re: library vs define-module issue
Date: Sat, 1 Aug 2020 16:46:42 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Icedove/68.8.0

Thanks John! This solved the problem. I now have it like this:

(library (geometry (0 0 1))
  (export point
    (rnrs base)
    (only (guile) lambda*)
    ;; structs
    (srfi srfi-9)
    (srfi srfi-9 gnu)
    ;; fold and list operations
    (srfi srfi-1)))

... (other code) ...

and I can import that just fine.

Are all forms, which are usually available when using (define-module
...) exported in the import set (guile)?

If not, where would I look for them?

Using (help identifier) inside geiser helps. It shows me for example:

scheme@(guile-user)> (help define)
No documentation found for:
(rnrs base): define

Which tells me what I would need to import when using (library ...).

Best regards,

On 01.08.20 15:40, John Cowan wrote:
> On Sat, Aug 1, 2020 at 8:02 AM Zelphir Kaltstahl
> < <>> wrote:
>     ;;; geometry.scm:25:0: warning: possibly unbound variable `define'
>     ;;; geometry.scm:26:2: warning: possibly unbound variable `lambda*'
>     What am I doing wrong? Why is everything unbound, even core forms like
>     define or cond? Perhaps I need to import some base thing when using
>     (library …)?
> Exactly.  You have to import (rnrs base) or else (guile), because the
> global environment is empty at the start of an R[67]RS library
> definition.  This is deliberate so that you can choose an entirely
> different base library if you wish.  Similarly, Chicken provides both
> (scheme base) and (chicken base), and Chibi provides both (scheme
> base) and (chibi), although (chibi) is smaller than (scheme base)
> rather than larger, in keeping with Chibi's goals.
> As a matter of style, I recommend importing the standard base library
> and then bringing in anything Guile-specific with (import (only
> (guile) ...)).  This advice also applies to Chibi, but not so much to
> Chicken unless you are specifically using the R7RS mode.
> John Cowan      
> <>
> Is not a patron, my Lord [Chesterfield], one who looks with unconcern
> on a man struggling for life in the water, and when he has reached ground
> encumbers him with help?        --Samuel Johnson

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