Hartmut Goebel schreef op vr 08-04-2022 om 19:03 [+0200]:
> +         (system system)
> +         (host-inputs `(,@(if source
> +                              `(("source" ,source))
> +                              '())
> +                        ,@inputs
> +                         ;; Keep the standard inputs of 'gnu-build-system'.
> +                         ,@(standard-packages)))

(standard-packages) needs to be in 'build-inputs', at least according
to 'lower' in (guix build-system gnu).

> +         (build-inputs `(("rebar" ,rebar)
> +                         ("erlang" ,erlang) ;; for escriptize
> +                         ,@native-inputs))

Greetings,
Maxime.