AMARANTH_USE_YOSYS=builtin
YOSYS=yowasp-yosys
NEXTPNR_ICE40=yowasp-nextpnr-ice40
ICEPACK=yowasp-icepack
NEXTPNR_ECP5=yowasp-nextpnr-ecp5
ECPPACK=yowasp-ecppack