Re: Binary substituter

[ludo@gnu.org (Ludovic Courtès)]

Andreas Enge <andreas@enge.fr> skribis:

> Am Donnerstag, 25. April 2013 schrieb Ludovic Courtès:
>> I believe that commit 1c9e7d6 partly solves that.  That is, if you
>> ‘rm -rf /nix/var/nix/substitute-binary/’, and then run
>> ‘guix build hello -n’, it should report things that it would download.
>
> Yes, it tells it will download hello. And the cache directory is filled 
> with data containing the urls of packages to download.

Good.

>> However, if you type ‘guix build hello’, it will barf in ‘filtered-port’
>> 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 
> /usr/local/guix-git/libexec/guix/substitute-binary
> guix substitute-binary: warning: using Guile 2.0.5-deb+1-3, which does not 
> support HTTP () encoding
> guix substitute-binary: error: download failed; use a newer Guile

Oh, it’s not failing where I was expecting.

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

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

Yes, it’s actually a ‘nix-store’ option.  We should add that option.

Thanks for testing!

Ludo’.