robotpkg/math/py-ndcurves bulk build results

ERROR: This package cannot be built for the following reason: ERROR: ====================================================================== ERROR: No acceptable python alternatives could be found ERROR: PREFER_ALTERNATIVE.python = python27 python36 ERROR: ERROR: Suggested value: python39 ERROR: ERROR: ====================================================================== /local/robotpkg/var/lib/robotpkg/mk/internal/can-be-built-here.mk:221: recipe for target 'cbbh' failed make[2]: *** [cbbh] Error 2