From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: =?utf-8?Q?It=E2=80=99s?= building!
Date: Sun, 15 Jan 2017 23:32:58 +0100
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To: guix-devel@gnu.org

Hello Guix!

ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> The machine was initially installed using substitutes from
> hydra.gnu.org, but ever since it has been building stuff on its own (it
> does not offload to any other machine at this point).  Thus it can be
> used to check for reproducibility issues:
>
>   guix challenge gdk-pixbuf \
>     --substitute-urls=3D"https://mirror.hydra.gnu.org https://bayfront.gu=
ixsd.org"

As mentioned in another thread, this is now summarized here:

  https://www.gnu.org/software/guix/packages/reproducibility.html

The code for this page uses the API of =E2=80=98guix challenge=E2=80=99:

  http://git.savannah.gnu.org/cgit/guix/guix-artwork.git/tree/website/www/p=
ackages.scm#n467

Although for many packages we can=E2=80=99t tell anything because bayfront
hasn=E2=80=99t built them yet, we can already see that a number of packages=
 have
reproducibility issues, some of which were already filed at
<https://bugs.gnu.org/>.

Let=E2=80=99s address these!

To investigate reproducibility issues, you need to extract the nars
linked from the page above with =E2=80=98guix archive -x=E2=80=99, as shown=
 at:

  https://www.gnu.org/software/guix/manual/html_node/Invoking-guix-challeng=
e.html

(Remember that those from hydra.gnu.org are bzip2-compressed, while
those from bayfront are gzipped.)

Ludo=E2=80=99.