Warning: This is the manual of the legacy Guile 2.0 series. You may want to read the manual of the current stable series instead.

2.5.2 Writing new Modules

You can create new modules using the syntactic form define-module. All definitions following this form until the next define-module are placed into the new module.

One module is usually placed into one file, and that file is installed in a location where Guile can automatically find it. The following session shows a simple example.

$ cat /usr/local/share/guile/site/foo/bar.scm

(define-module (foo bar)
  #:export (frob))

(define (frob x) (* 2 x))

$ guile
scheme@(guile-user)> (use-modules (foo bar))
scheme@(guile-user)> (frob 12)
$1 = 24

For more on how to install your module, see Installing Site Packages.