Akku web site: https://akkuscm.org
When I created this tyest project with Akku, I specified the project name as "guile_akku_project" which is now the name of the library defined here.
Run this example:
$ .akku/env
$ .akku/bin/guile_akku_project.sps
Note that even though Akku uses Guile, this example is run under Chez Scheme, which seems to be the default.
$ akku list | grep -i html
$ akku install wak-htmlprag
$ .akku/env
$ scheme
> (import (wak htmlprag))
> (write-shtml-as-html '(html (body "Hello World!")))
<html><body>Hello World!</body></html>#f
> (import (guile_akku_project))
> (hello "Mark")
"Hello Mark!"