lineage.tests.conftest
======================

.. py:module:: lineage.tests.conftest

.. autoapi-nested-parse::

   Test-session setup.

   Several tests drive scipy/numpy linear algebra hard enough that BLAS's own thread
   pool competes with pytest-xdist's worker processes for cores, which slows the suite
   down rather than speeding it up. Pin each library to a single BLAS thread so the
   parallelism comes from xdist alone; this must happen before numpy/scipy are
   imported anywhere, so it lives at the top of the first conftest.py loaded.