$ git clone https://github.com/Mic92/qmk_firmware $HOME/qmk_firmware
(bluetooth_playground branch)
$ qmk flash -kb keychron/k6_pro/ansi/white -km via-mic92
(master branch)
Bootloader mode: Press Esc
while plugging in power cable
$ qmk flash -kb keychron/q12/ansi_encoder -km default
$ nix run .#flash --builders ""