Usage git clone https://github.com/qmk/qmk_firmware.git ln -s $(pwd)/m-gregoire/ qmk_firmware/keyboards/ergodox_ez/keymaps/ nix-shell shell.nix cd qmk make git-submodule qmk compile -kb ergodox_ez -km m-gregoire qmk flash -kb ergodox_ez -km m-gregoire