Federico Beffa <be...@ieee.org> 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’.
