The php-imagick 3.4.0 test suite fails with various segfaults when openmp threads are in use. Force the openmp thread count to 1 to avoid this problem.
This patch is a workaround only; it is currently unknown if the root bug lies in php-imagick or in imagemagick.
skip some tests still failing on php 7.4 on Debian'ish systems
The Ubuntu build already is more stable than Debian, but a few are left that need to be analyzed and fixed post feature freeze. For now disable those few tests that are left, but re-enable that bad tests actually would break the build which is better coverage than fail&ignore.
Christian Ehrhardt <christian.ehrhardt@canonical.com>