Keyboard remaping: udev's extraHwdbFile not taken into account?

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1

I’m not sure why, but I can’t manage to make udev load the hwdb file (used to remap keys, here I try to remap the “menu” key of a QWERTY keyboard to the “<>” key that we have on french keyboards). For that, I added in my configuration:

  services.udev = {
    extraHwdb = ''
      keyboard:usb:v*p*
       KEYBOARD_KEY_70065=102nd
    '';
  };

However it does not work. If I look at the source of the module, I can see that it tries to create a file /etc/udev/hwdb.d/99-local.hwdb however I don’t have this file on my system after loading the above config:

$  ls /etc/udev
hwdb.bin  rules.d
$ ls /run/current-system/sw/etc/
bash_completion.d  dbus-1  gtk-2.0  gtk-3.0  xdg

Do you know what could be wrong here? Why isn’t the file written?

1 Like
2

Same issue here. @tobiasBora did you manage to solve it eventually?

3

No, you might want to dook at Udev keyboard remapping: ExtraHwdb does not work anymore? · Issue #182966 · NixOS/nixpkgs · GitHub but I ended up using bépo that does not need any remap, so I have not tried further.

4

I was (finally, phew) able to remap my caps to control via the way described in Disable capslock with udev by kachick · Pull Request #786 · kachick/dotfiles · GitHub

        environment.etc."udev/hwdb.d/99-local.hwdb".text = '
      evdev:input:b0011v0001p0001eAB83*
        KEYBOARD_KEY_3a=leftctrl
  '';

(make sure to use spaces, not tabs)
… and this bit activates the configuration on boot:

     systemd.services."systemd-vconsole-setup".postStart = ''echo "starting hwdb" && systemd-hwdb update && udevadm trigger && echo "done hwdb"'';
5

Weird, this works just fine for me