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Subject: bug#58112: OPAM importer fails in lookup-node
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From: Csepp <raingloom@HIDDEN>
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The specific error is this:
Wrong number of values returned to continuation (expected 2)
It is caused by opam->guix-package silencing intermediate errors by
using and-let* (the poor person's Maybe monad) and returning #f when the
receiving side expects two return values.
Initial reproducer:
guix import opam -r mirage
Also happens with opam-monorepo.
Cc-ing Julien whom might know why the code is structured this way? It's
not like the calling side can handle a falsy return and the error is not
detected early either, so the user doesn't even know what is causing it.
Can I just turn it all into errors? Or maybe we can use the condition
system?
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: Csepp <raingloom@HIDDEN> Subject: bug#58112: Acknowledgement (OPAM importer fails in lookup-node) Message-ID: <handler.58112.B.166427951724325.ack <at> debbugs.gnu.org> References: <87sfkd11eh.fsf@HIDDEN> X-Gnu-PR-Message: ack 58112 X-Gnu-PR-Package: guix Reply-To: 58112 <at> debbugs.gnu.org Date: Tue, 27 Sep 2022 11:52:02 +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 58112 <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 58112: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D58112 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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