Woops! Forgot that I also need to reply to the mailing list. Here is
the email I've initially sent only to Ludovic Courtès:
On Sat, Apr 26, 2025 at 12:40 PM Ludovic Courtès <l...@gnu.org> wrote:
> wrote:
> (cond-expand-provide (current-module) '(srfi-135))
I am writing a package definition for SRFI-78, naming it `guile-srfi-78`.
I have added:
(cond-expand-provide (current-module) '(srfi-78))
to the top of the `./srfi/srfi-78.scm` file, right after
`(define-module (srfi srfi-78) ...)`, but I see that within the `guix
shell -L . guile guile-srfi-78` environment, GNU Guile's `cond-expand`
only knows that the `srfi-78` feature exists after running
`use-modules`.
The chicken and the egg. You can only check if a module exists after
loading it.
Is there no way of letting GNU Guile's cond-expand know that a package
was installed with that feature?
Many thanks,
Yuval Langer.
