Eyelash Corne ZMK Config

Custom ZMK firmware for the Eyelash Corne keyboard (42-key split, nice!nano v2, wireless Bluetooth).

Features

Layouts: Bépo (primary), ErgoL, QWERTY
Home row mods, smart numword layer, combos, mod-morph, leader keys
Mouse emulation, French/currency Unicode support
nice!view display (gem animation), RGB underglow (auto-off on idle)
Power: 12min sleep timeout, +8dBm BT transmission

Build & Flash

./go.sh build  # Build both sides (output: firmwares/)
./go.sh flash  # Build and flash left/right (bootloader mode prompts)

Supports auto-mount (/run/media/$USER/NICENANO) and manual mount (/mnt).

Keymap Visualization

Eyelash Corne Keymap

Layers

Layer	Name	Description
L0	Bépo	Primary French layout, home row mods, Unicode accents
L1	ErgoL	Alternative French layout
L2	QWERTY	Standard layout
L3	Accents	French vowels (´ ` ^ ¨), Æ Œ Ñ Ç
L4	Symbols	Programming symbols, brackets, operators
L5	Numbers	Calculator-style numpad
L6	Navigation	Arrows, page nav, shortcuts
L7	Function	F1-F12, media, system controls

Home row mods (Bépo): Left: A(GUI) U(Alt) I(Shift) E(Ctrl) | Right: C(Hyper) T(Ctrl) S(Shift) R(Alt) N(GUI)

Configuration

Power: 12min sleep timeout, RGB auto-off, soft off support
Bluetooth: +8dBm transmission, multiple devices
Display: nice!view gem animation (4.8s interval), shows layer/battery/BT
Mouse: Movement 1200, scroll 20, idle 125ms

Build config (build.yaml): Left/right halves with nice!view, settings reset

Leader Key Sequences

Leader key is activated with the RH0+RH2 combo (right thumb cluster: Shift + Alt on QWERTY). After activation, press a sequence of keys (timeout: 300ms per key) to insert text snippets or launch applications.

Layout Switching

Sequence	Output	Description
l b	Switch to BÉP	Switch to Bépo layout
l e	Switch to ERG	Switch to ErgoL layout
l q	Switch to QWE	Switch to QWERTY layout

Development Patterns - General

Sequence	Output	Description
c n	nil	Go nil value
c e	if err != nil {↵⇥	Go error check
c l	console.log()	JavaScript console.log
c p	fmt.Println()	Go fmt.Println
c f	function() {}	JavaScript function
c a	() => {}	JavaScript arrow function

Development Patterns - Python

Sequence	Output	Description
p i	if name == “main":↵⇥	Python main block
p d	def ():↵⇥	Python function def
p c	class :↵⇥	Python class def
p p	print(f”")	Python f-string print
p t	try:↵⇥↵except Exception as e:↵⇥	Python try/except
p w	with open("", “r”) as f:↵⇥	Python with open

Development Patterns - Emacs Lisp

Sequence	Output	Description
e d	(defun ()↵	Emacs Lisp defun
e i	(interactive)	Emacs Lisp interactive
e l	(let ((	Emacs Lisp let binding
e s	(setq )	Emacs Lisp setq
e m	(message “”)	Emacs Lisp message
e r	(require ‘)	Emacs Lisp require

Development Patterns - Nix

Sequence	Output	Description
n f	{ pkgs, … }:	Nix function signature
n l	let↵⇥↵in↵	Nix let/in expression
n w	with pkgs; [↵⇥↵]	Nix with statement
n i	inherit ;	Nix inherit keyword
n b	buildInputs = [ ];	Nix buildInputs attribute
n p	pkgs.writeShellScriptBin "" ‘’↵⇥↵’’	Nix shell script wrapper

Import Patterns

Sequence	Output	Description
i p	import	Python import
i f	from import	Python from import
i n	{ pkgs }: {↵⇥↵}	Nix module import
i e	(use-package ↵⇥	Emacs use-package

Personal Macros

Sequence	Output	Description
m e	vincent@sbr.pm	Email address
m g	Vincent Demeester vincent@sbr.pm	Git signature
m s	–↵Vincent Demeester↵vincent@sbr.pm	Email signature

Application Shortcuts

These leader sequences trigger niri window manager keybindings:

Sequence	Keybinding	Application
a d	Mod+D	Fuzzel (app launcher)
a e	Mod+Shift+Enter	Emacs (client)
a t	Mod+Enter	Kitty (terminal)
a j	Mod+Control+D	Rofimoji (emoji)
a v	Mod+Control+V	Cliphist (clipboard)
a r	Mod+Shift+D	Raffi (launcher)