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[bug#51091] [PATCH v3] guix: opam: Do not fail when refreshing.

From: Julien Lepiller
Subject: [bug#51091] [PATCH v3] guix: opam: Do not fail when refreshing.
Date: Fri, 19 Nov 2021 06:19:56 -0500
User-agent: K-9 Mail for Android

Le 19 novembre 2021 04:16:32 GMT-05:00, "Ludovic Courtès" <> a 
écrit :
>Julien Lepiller <> skribis:
>> I forgot to remove the catch #t around the whole body of the function.
>> I noticed that guard* was raising &non-continuable so I tried to fix it
>> by using raise-continuable from (ice-9 exceptions). Is this the correct
>> solution?
>I suppose, though I’m not sure why it needs to be continuable: you could
>just catch the exception and move on to the next package?

I don't understand how to catch the exception though, unless you mean wrap 
everything with catch #t, which kinda defeats the purpose of having a condition 
in the first pjace. guard* raises &non-continuable unless the condition is 
continuable, or I'm missing something in the way I use it. I have no idea what 
a continuable exception is, so let me just push the other patch.

(guard* (c ((opam-error? c) #f)))
  (raise (condition (&opam-error …))))

Doesn't return #f as I expect, but raises &non-continuable.

>> From a60e2ca645f4f8a6da72111d047f8cbb41ebe3e6 Mon Sep 17 00:00:00 2001
>> Message-Id: 
>> <>
>> From: Julien Lepiller <>
>> Date: Fri, 8 Oct 2021 04:58:27 +0200
>> Subject: [PATCH] import: opam: Do not fail when refreshing.
>> Because we throw an error when a package is not in the opam repository,
>> the updater would crash when encountering a package that is not in opam
>> but uses the ocaml-build-system, such as opam itself.  This catches the
>> error and continues without updating said package, and lets us update
>> the rest of the packages.
>> * guix/scripts/import/opam.scm (guix-import-opam): Catch not-found
>> condition and leave.
>> * guix/import/opam.scm (&opam-not-found-error): New condition type.
>> (opam-fetch): Raise condition instead of leaving.
>> (latest-release): Catch not-found condition and warn.
>> (conditional): Rename from `condition'.
>> * tests/opam.scm (parse-conditions): Change accordingly.
>zimoun <> skribis:
>> I think <> is simpler and fix the same thing.
>I’m fine either way.  I think there’s value longer-term in having
>structured exceptions in importers, though.
>Julien: your call!

Hopefully someone smarter than me can figure it out. I'll push the other patch, 
although I don't like the double warning in the updater.


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