From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#35621: Simplify comparing guix challenge results
Date: Wed, 08 May 2019 15:04:31 +0200
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References: <87sgtqxhwi.fsf@yucca>
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To: Vagrant Cascadian <vagrant@reproducible-builds.org>
Cc: 35621@debbugs.gnu.org

Hi!

Vagrant Cascadian <vagrant@reproducible-builds.org> skribis:

> What about an argument to "guix challenge" that handles the downloading
> and unpacking to a temporary directory, and possibly another that also
> runs a comparison tool against the results. Maybe something like:
>
>   $ guix challenge --download-differences
>   /tmp/git-XXXXX/SUBSTITTE-X/...-git-2.5.0
>   /tmp/git-XXXXX/SUBSTITUTE-Y/...-git-2.5.0
>   /gnu/store/...-git-2.5.0
>
> Downloads and unpacks the substitutes, and outputs the resulting
> directories.
>
>
>   $ guix challenge --download-differences --compare-with=3D"diffoscope ..=
."
>
> This would do the above, plus run diffoscope on the directories
> ... though I think diffoscope can only compare between two things at a
> time... so that might get difficult if many substitutes return results.

Sounds like a good idea.  Perhaps =E2=80=98--compare-with=E2=80=99 is actua=
lly enough
(it would also download things), dunno.

Ludo=E2=80=99.