From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Subject: bug#32895: file progress reporter crashes on small files
Date: Tue, 2 Oct 2018 16:27:08 +0200
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 32895@debbugs.gnu.org


Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> Hello,
>
> Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> skribis:
>
>> guix/progress.scm:214:25: In procedure display-download-progress:
>> In procedure /: Wrong type argument in position 1: #f
>>
>> This happens because =E2=80=9Ctransferred=E2=80=9D in the =E2=80=9Celse=
=E2=80=9D branch of (@ (guix
>> progress) display-download-progress) is #f instead of a number.  This
>> could be the result of running string->number on an invalid string in
>> =E2=80=9Cprint-build-event=E2=80=9D.
>
> Indeed, that seems to be the case.  This would mean we=E2=80=99re emittin=
g an
> incorrect build trace.
>
> Do you have the exact command to reproduce it?

Unfortunately, I don=E2=80=99t.  It=E2=80=99s hard to reproduce this when a=
ll these
cabal revisions have already been downloaded.  This also depends a lot
on the actual download speed.

I only got this for cabal revisions, so locally building any of the
ghc-* packages with #:cabal-revision arguments might be sufficient to
trigger the bug.

--
Ricardo