[Debian-science-sagemath] Various build issues with sage 8.9

[Tobias Hansen]

Hi,

sagemath 8.9.beta9 with Python 3  is in unstable now, but unfortunately only builds successfully on amd64. There are various issues:

i386:
sagemath FTBFS due to https://github.com/linbox-team/givaro/issues/130
I just uploaded a new givaro package with the patch from sage, but now there are segfaults during the doctesting in the files:
sage -t --long src/sage/schemes/elliptic_curves/ell_number_field.py  # Killed due to abort
sage -t --long src/sage/schemes/elliptic_curves/ell_field.py  # Killed due to segmentation fault
sage -t --long src/sage/schemes/elliptic_curves/isogeny_small_degree.py  # Killed due to segmentation fault

arm64 and ppc64el:
segfaults during the doctesting in the file:
sage -t --long src/sage/calculus/riemann.pyx  # Killed due to segmentation fault

riscv64:
There seems to be something wrong with gfan:
sage -t --long src/sage/rings/polynomial/groebner_fan.py  # 118 doctests failed

armhf, mips64el and mipsel:
linbox FTBFS

If anyone wants to help looking into any of these issues that would be very welcome!

Best,
Tobias