The ebuild suffers from serious NIH: > do PYTHONPATH="${WORKDIR}"/${P}-${EPYTHON/./_}/install/usr/lib/${EPYTHON}/site-packages ${EPYTHON} ${x} || die "${x} failed" This is reinventing ${BUILD_DIR}, $(python_get_sitedir) (and both of them poorly), and on top of that, setting PYTHONPATH here should be completely unnecessary here since the eclass does that.
(In reply to Michał Górny from comment #0) > setting PYTHONPATH here should be completely > unnecessary here since the eclass does that. Without setting PYTHONPATH I get Traceback (most recent call last): File "/var/tmp/portage/dev-python/rpyc-6.0.2/work/rpyc-6.0.2/tests/test_affinity.py", line 4, in <module> from tests import support ModuleNotFoundError: No module named 'tests'