-brew install avr-gcc@7 gcc-arm-none-eabi dfu-programmer avrdude dfu-util
-brew link --force avr-gcc@7
+brew install avr-gcc@8 gcc-arm-none-eabi dfu-programmer avrdude dfu-util python3
+brew link --force avr-gcc@8
+pip3 install -r ${util_dir}/../requirements.txt