bug#36992: linux-libre-5.2.7 failed to build on armhf and aarch64; why?

[Ricardo Wurmus <rekado@elephly.net>]

Hi Mark,

> linux-libre-5.2.7 failed to build on Berlin due to a dependency failure:
>
>   https://ci.guix.gnu.org/search?query=linux-libre-5
>   https://ci.guix.gnu.org/build/1556871/details
>   https://ci.guix.gnu.org/build/1556831/details
>
> I guess that the deblobbing derivation probably failed, but I don't see
> a way to confirm this, or to find out what specifically went wrong.
>
> Specifically, I'd like to know:
>
> (1) Which derivations failed, that caused these dependency failures?

Some time ago I added a feature to Cuirass that allowed us to see what
dependency was responsible.  This worked through a somewhat awkward
processing of derivation files.  I guess that this no longer works since
the representation of derivation inputs has changed.

I’ll try to verify this later and fix this if possible.

It would be great if we didn’t have to do this and Cuirass were able to
record enough information when the build failed…

> (2) Were the failed build logs saved, and if so, how can I see them?

This also used to work before.  I’ll also look into that.  Previously
there would be a link to the logs on the details page.

> (3) Did the failed derivations time out, or was it another kind of failure?

I guess the logs — once available — will help us answer this question.

--
Ricardo