yanlin/nix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

remove key disable

Browse source
This commit is contained in:
Yan Lin 2025-11-02 13:47:31 +01:00
parent e05060be70
commit 00f28f1e6e
2 changed files with 0 additions and 80 deletions
Download patch file Download diff file Expand all files Collapse all files

73
modules/disable-keyboard.nix
View file

@ -1,73 +0,0 @@
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.disable-keyboard;
in
{
options.services.disable-keyboard = {
enable = mkEnableOption "automatically disable internal keyboard when specific external keyboard is connected";
externalKeyboardName = mkOption {
type = types.str;
default = "";
example = "HHKB-Hybrid_1";
description = ''
The name of the external keyboard that triggers disabling the internal keyboard.
This should match the ATTRS{name} value shown in udevadm info or Bluetooth device settings.
Use `libinput list-devices` or `udevadm monitor` to find the exact name.
'';
};
internalKeyboardName = mkOption {
type = types.str;
default = "AT Translated Set 2 keyboard";
description = ''
The name of the internal keyboard to disable.
Default is "AT Translated Set 2 keyboard" which is standard for most laptops.
'';
};
};
config = mkIf cfg.enable {
# Install evtest package for grabbing keyboard input
environment.systemPackages = [ pkgs.evtest ];
# Systemd service to grab (disable) the internal keyboard
systemd.services.disable-keyboard = {
description = "Disable internal keyboard (${cfg.internalKeyboardName}) using evtest";
serviceConfig = {
Type = "simple";
# Wait for device to be ready, then find and grab the internal keyboard
ExecStartPre = "${pkgs.coreutils}/bin/sleep 2";
ExecStart = pkgs.writeShellScript "disable-keyboard" ''
# Find the event device for the internal keyboard
INTERNAL_KB_EVENT=$(${pkgs.gnugrep}/bin/grep -l "${cfg.internalKeyboardName}" /sys/class/input/event*/device/name 2>/dev/null | ${pkgs.gnused}/bin/sed 's|/sys/class/input/\(.*\)/device/name|/dev/input/\1|' | head -n1)
if [ -z "$INTERNAL_KB_EVENT" ]; then
echo "Internal keyboard '${cfg.internalKeyboardName}' not found"
exit 1
fi
echo "Disabling internal keyboard: $INTERNAL_KB_EVENT"
# Use evtest --grab to exclusively grab the device (prevents events from reaching the system)
exec ${pkgs.evtest}/bin/evtest --grab "$INTERNAL_KB_EVENT" > /dev/null 2>&1
'';
Restart = "on-failure";
RestartSec = "5s";
};
wantedBy = []; # Don't start automatically on boot, only via udev trigger
};
# udev rules to detect external keyboard connection/disconnection
services.udev.extraRules = ''
# When the specified external keyboard connects, start the disable service
ACTION=="add", SUBSYSTEM=="input", ENV{ID_INPUT_KEYBOARD}=="1", ATTRS{name}=="${cfg.externalKeyboardName}", TAG+="systemd", ENV{SYSTEMD_WANTS}="disable-keyboard.service"
# When the external keyboard disconnects, stop the service (re-enable internal keyboard)
ACTION=="remove", SUBSYSTEM=="input", ENV{ID_INPUT_KEYBOARD}=="1", ATTRS{name}=="${cfg.externalKeyboardName}", RUN+="${pkgs.systemd}/bin/systemctl stop disable-keyboard.service"
'';
};
}