Re: hydra python2-numpy-1.9.1 failure

[Ludovic Courtès]

Federico Beffa <address@hidden> skribis:

> Thanks for the input! It looks like on hydra the failure is
> reproducible.

It’s actually hard to know, because guix-daemon on hydra.gnu.org runs
with --cache-failures.

> Now that you mention race conditions, I remember having a hard time
> with parallel builds in ATLAS; and numpy makes use of it. I may try
> adding '#:parallel-tests? #f'.

Check if that flag has an effect at all.  For instance,
Automake-generated makefiles have supported parallel test suites for
not-too-long (a couple of years maybe) and even there it’s optional.
Hand-written build systems often run tests sequentially.

Ludo’.