rrdtool still depends on python (python-exec) even when USE=-python. Please set DISTUTILS_OPTIONAL=1 before inheriting distutils-r1 so the python deps are only included when python is used (via already present "python? ( ${PYTHON_DEPS} )" in [R]DEPEND). The rest of the ebuild does call distutils-r1 functions explicitly as needed when python useflag is set. Reproducible: Always
Fixed without a revision bump. Thanks for the report!