Re: [GSoC] Continuous integration tool à la Hydra.

[ludo@gnu.org (Ludovic Courtès)]

Hello!

Mathieu Lirzin <mthl@gnu.org> skribis:

> Since it would be cumbersome to speak about something without giving it
> a name, I have decided to call this software “Cuirass”.

Interesting.  :-)

> While being intended as a general purpose continuous integration tool,
> the first iteration of Cuirass is focusing only on building Guix
> packages.  The logic of the program is simple since 'cuirass' sits in a
> loop:
>
>  - Fetching new changes from Guix master branch
>  - Compiling Guix code
>  - Evaluating packages derivations
>  - Building those derivations
>
> The Guix repository is kept in a directory set by 'CUIRASS_CACHEDIR'
> environment variable to avoid cloning it every time.  Even if the
> algorithm is trivial, the implementation has required some thought in
> order to allow using guile code fetched from the Guix git repository.
> Hopefully the solution was already in 'hydra-eval-guile-jobs' script
> from Hydra, so I have used the same technique.

So far, so good!

I think eventually ‘compile’ should disappear.  It should be up to the
project’s ‘evaluate.scm’ file (for Guix, it’s
‘build-aux/hydra/gnu-system.scm’) to compute whatever needs to be
computed to produce a list of derivations to build.

> Currently the build phase is failing with the following error:
>
> Starting download of /gnu/store/y17blrd1x80nqik4ss4djbm92a5i5ivl-zsh-5.1.1.tar.gz
> From http://www.zsh.org/pub/zsh-5.1.1.tar.gz...
> ERROR: In procedure connect*: Network is unreachable
>
> Starting download of /gnu/store/y17blrd1x80nqik4ss4djbm92a5i5ivl-zsh-5.1.1.tar.gz
> From http://www.zsh.org/pub/old/zsh-5.1.1.tar.gz...
> ERROR: In procedure connect*: Network is unreachable

Probably just a transient error on zsh.org.  The 1st URL is 404, and the
second one works for me.  I don’t think this has anything to do with
https.

Anyway, it’s good to see that the basics are in place!  :-)

Thanks for the update,
Ludo’.