From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: bug#18935: gexp->derivation test failure
Date: Tue, 04 Nov 2014 16:44:51 -0500
Message-ID: <87y4rqabe4.fsf@netris.org>
References: <87h9yg704p.fsf@netris.org> <8761euafbb.fsf@gnu.org>
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In-Reply-To: <8761euafbb.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Tue, 04 Nov 2014 21:20:08 +0100")
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ludo@gnu.org (Ludovic Court=C3=A8s) writes:

> Mark H Weaver <mhw@netris.org> skribis:
>
[...]
>>   actual-error: (srfi-34 #<condition &nix-protocol-error [message:
>> "path
>> `/tmp/nix-build-guix-0.7.14e84b2.drv-0/source/test-tmp/store/ry17r3hm48c=
kcchz9ls6yhd00alyiipx-foo'
>> is not valid" status: 1] a587d68>)
>
> This can only happen if FILE in that test were deleted after its
> creation and before the =E2=80=98gexp-derivation=E2=80=99...  which canno=
t even happen
> since FILE remains live for the duration of the =E2=80=98%store=E2=80=99 =
session...
> except if another daemon instance deletes it!
>
> Commit 834ea02 fixes that: it turns out that tests/nar.scm was creating
> the exact same store item, and then calling the GC to delete it.
>
> I=E2=80=99ll update the Guix snapshot in Guix.

Thanks!

> (In the meantime, chances are
> that you can just restart the build and won=E2=80=99t stumble upon this b=
ug,
> which was unlikely to occur.)

The same failure happened to me in two consecutive build attempts:
once when running "guix system build", and then again when running
"guix build -K guix" so that I could get the failed test logs.

       Mark