I don't know how to make USE_EXPAND work with guru also pkgcheck scan gives me this warning: UnknownProfileUseExpand: 'make.defaults': unknown USE_EXPAND groups: BACKEND, COMM_QUEUE, GEOIDS_DATASETS, GRAVITY_MODELS, INSTRUMENT, MAGNETIC_MODELS, MBDYN_MODULES, NANOX, OFI_MR, PARSEC_DEBUG, PARSEC_DIST, PARSEC_PROF, TCL, TOTAL_DATA_ORDERING, TRANSPORT
You can't. Use normal USE flags.
I've discovered how to make them work