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Subject: bug#71887: Raise an error when extending a service type that doesn't support extensions
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From: Richard Sent <richard@HIDDEN>
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Hi Guix,
At present it is possible to extend service-types that do not implement
compose or extend methods, resulting in surprising behavior that's hard
to debug [1]. We should throw an error when a service-type that does not
have compose or extend fields is extended.
--8<---------------cut here---------------start------------->8---
(use-modules (gnu home)
(gnu home services)
(gnu home services desktop)
(gnu services))
(home-environment
(services
(list
;; home-redshift-service-type does not support extensions
(simple-service 'this-should-error home-redshift-service-type
"According to all known laws of aviation..."))))
--8<---------------cut here---------------end--------------->8---
[1]: https://lists.gnu.org/archive/html/help-guix/2024-07/msg00000.html
--
Take it easy,
Richard Sent
Making my computer weirder one commit at a time.
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Richard Sent <richard@HIDDEN> Subject: bug#71887: Acknowledgement (Raise an error when extending a service type that doesn't support extensions) Message-ID: <handler.71887.B.171987184328840.ack <at> debbugs.gnu.org> References: <877ce4dar0.fsf@HIDDEN> X-Gnu-PR-Message: ack 71887 X-Gnu-PR-Package: guix Reply-To: 71887 <at> debbugs.gnu.org Date: Mon, 01 Jul 2024 22:11:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-guix@HIDDEN If you wish to submit further information on this problem, please send it to 71887 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 71887: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D71887 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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