Bug#1126625: slepc4py: Autopkgtest fails on ppc64el

[Drew Parsons]

Source: slepc4py
Followup-For: Bug #1126625
X-Debbugs-Cc: debian-powerpc at lists.debian.org
User: debian-powerpc at lists.debian.org
Usertags: ppc64el
Control: block -1 by 1126688

slepc4py demo tests fail when openblas is used on ppc64el.
Likewise this is the cause of the "random" failures reported here.

"Random" because slepc4py does not depend on openblas, but allows it
as an alternative.  Usually debci does not install it
(libopenblas-pthreads-dev) for slepc4py tests, but sometimes it does.

The problem is being monitored in openblas Bug#1126688