The default keymap provided here is useful for testing and as a base for your own mapping, but does not include layers and is missing many keycodes. To build the default keymap for testing:
make chocv:default
If you are looking for a full fetured keymap, you can build the firmware with Miryoku without any additional work
For details and building instructions and options please see the The official Miryoku QMK Repo
The command to build with the default Miryoku layout is:
make chocv:manna-habour_miryoku