[bug#71038] [PATCH 1/2] guix: store: Enable specifying the available builtin builders.

[Simon Tournier <zimon.toutoune@gmail.com>]

Hi Chris,

On sam., 18 mai 2024 at 14:19, Christopher Baines <mail@cbaines.net> wrote:

> diff --git a/guix/store.scm b/guix/store.scm
> index 58ddaa8d15..0c734cdca7 100644
> --- a/guix/store.scm
> +++ b/guix/store.scm
> @@ -571,7 +571,7 @@ (define* (connect-to-daemon uri #:key non-blocking?)
>
>  (define* (open-connection #:optional (uri (%daemon-socket-uri))
>                            #:key port (reserve-space? #t) cpu-affinity
> -                          non-blocking?)
> +                          non-blocking? assume-available-builtin-builders)

Why add the variable %assume-available-builtin-builders and default to
it?

Something like:

--8<---------------cut here---------------start------------->8---
(define %assume-available-builtin-builders
  "List of builtin builders supported by the builder Guix daemon."
  (list "download" "git-download"))

(define* (open-connection #:optional (uri (%daemon-socket-uri))
                          #:key port (reserve-space? #t) cpu-affinity
                          non-blocking?)
                          non-blocking?
                          (assume-available-builtin-builders %assume-available-builtin-builders))
--8<---------------cut here---------------end--------------->8---

And then default to this %assume-available-builtin-builders elsewhere in
[PATCH 2/2].  IMHO, it changes almost nothing but it would help to know
(document) what to pass as argument.

Cheers,
simon