From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Binary substituter
Date: Fri, 26 Apr 2013 22:18:54 +0200
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To: Andreas Enge <andreas@enge.fr>
Cc: bug-guix@gnu.org

Andreas Enge <andreas@enge.fr> skribis:

> Am Donnerstag, 25. April 2013 schrieb Ludovic Court=C3=A8s:
>> I believe that commit 1c9e7d6 partly solves that.  That is, if you
>> =E2=80=98rm -rf /nix/var/nix/substitute-binary/=E2=80=99, and then run
>> =E2=80=98guix build hello -n=E2=80=99, it should report things that it w=
ould download.
>
> Yes, it tells it will download hello. And the cache directory is filled=20
> with data containing the urls of packages to download.

Good.

>> However, if you type =E2=80=98guix build hello=E2=80=99, it will barf in=
 =E2=80=98filtered-port=E2=80=99
>> when trying to actually download the thing.
>
> Maybe. Here is the output:
>
> the following file will be downloaded:
>    /nix/store/w2121wnp8xv3ycjsgj3ymhb147mrgpc9-hello-2.8
> @ substituter-started /nix/store/w2121wnp8xv3ycjsgj3ymhb147mrgpc9-hello-2=
.8=20
> /usr/local/guix-git/libexec/guix/substitute-binary
> guix substitute-binary: warning: using Guile 2.0.5-deb+1-3, which does no=
t=20
> support HTTP () encoding
> guix substitute-binary: error: download failed; use a newer Guile

Oh, it=E2=80=99s not failing where I was expecting.

Hmm, I see no easy workaround for this one.  Mark?

> @ substituter-failed /nix/store/w2121wnp8xv3ycjsgj3ymhb147mrgpc9-hello-2.=
8=20
> 256 fetching path `/nix/store/w2121wnp8xv3ycjsgj3ymhb147mrgpc9-hello-2.8'=
=20
> failed with exit code 1
> guix build: error: build failed: some substitutes for the outputs of=20
> derivation `/nix/store/7b51j955338q2kxj3ssvly0i2pw20z7q-hello-2.8.drv'=20
> failed; try `--fallback'
>
> Adding "--fallback" leads to an error message about an unrecognised optio=
n.

Yes, it=E2=80=99s actually a =E2=80=98nix-store=E2=80=99 option.  We should=
 add that option.

Thanks for testing!

Ludo=E2=80=99.