bug#33078: Attempt to build my GuixSD system now fails

[Marius Bakke <mbakke@fastmail.com>]

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Marius Bakke <mbakke@fastmail.com> writes:

> Mark H Weaver <mhw@netris.org> writes:
>
>>   (services (cons* (console-keymap-service keymap)
>>                    ;;(xfce-desktop-service)
>>                    (gnome-desktop-service)
>>                    (service network-manager-service-type
>>                             (network-manager-configuration))
>>                    (service wpa-supplicant-service-type wpa-supplicant)
>
> To adapt to the new interface, this should be changed to:
>
> (service wpa-supplicant-service-type)
>
> ...though it would be good to have backwards compatibility here.  WDYT
> of this approach?

[...]
  
>  (define wpa-supplicant-service-type
> -  (let ((config->package
> -         (match-lambda
> -           (($ <wpa-supplicant-configuration> wpa-supplicant)
> -            (list wpa-supplicant)))))
> -    (service-type (name 'wpa-supplicant)
> -                  (extensions
> -                   (list (service-extension shepherd-root-service-type
> -                                            wpa-supplicant-shepherd-service)
> -                         (service-extension dbus-root-service-type config->package)
> -                         (service-extension profile-service-type config->package)))
> -                  (description "Run the WPA Supplicant daemon, a service that
> +  (lambda* (#:optional wpa-supplicant-package)      ;deprecated
> +    (let ((package
> +           (if wpa-supplicant-package
> +               wpa-supplicant-package
> +               (match-lambda
> +                 (($ <wpa-supplicant-configuration> wpa-supplicant)
> +                  (list wpa-supplicant))))))

Derp, this obviously won't work.

I've tried various incarnations to match a package object in the
match-lambda with little success.  Suggestions?

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