nixos-config/modules/kanata/default.nix

{ config, lib, ... }:
with lib;
let
  cfg = config.eboskma.kanata;
in
{
  options.eboskma.kanata = {
    enable = mkEnableOption "kanata";
    devices = mkOption {
      description = "Devices to enable kanata for";
      type = types.listOf types.path;
    };
  };

  config = mkIf cfg.enable {
    services.kanata = {
      enable = true;

      keyboards = {
        ducky = {
          devices = cfg.devices;

          config = ''
            (defsrc
              esc     f1 f2 f3 f4           f5 f6 f7 f8       f9 f10 f11 f12        prtsc scrlck pp  calc mute voldwn volu
              grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc ins   home pgup  nlck kp/  kp*    kp-
              tab  q    w    e    r    t    y    u    i    o    p    [    ]    \    del   end  pgdn  kp7  kp8  kp9    kp+
              caps a    s    d    f    g    h    j    k    l    ;    '    ret                        kp4  kp5  kp6
              lshift z    x    c    v    b    n    m    ,    .    /    rshift             up         kp1  kp2  kp3    kprt
              lctrl lmeta lalt           spc             ralt rmeta  rctrl          lft  down  rght  kp0       kp.)

            (deflayer colemak
              esc     f1 f2 f3 f4           f5 f6 f7 f8       f9 f10 f11 f12        prtsc @qwe pp  calc mute voldwn volu
              grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc ins   home pgup  nlck kp/  kp*    kp-
              tab  q    w    f    p    g    j    l    u    y    ;    [    ]    \    del   end  pgdn  kp7  kp8  kp9    kp+
              @cap a    r    s    t    d    h    n    e    i    o    '    ret                        kp4  kp5  kp6
              lshift z    x    c    v    b    k    m    ,    .    /    rshift             up         kp1  kp2  kp3    kprt
              lctrl lmeta lalt           spc             ralt rmeta  rctrl          lft  down  rght  kp0       kp.)

            (deflayer qwerty
              esc     f1 f2 f3 f4           f5 f6 f7 f8       f9 f10 f11 f12        prtsc @col pp  calc mute voldwn volu
              grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc ins   home pgup  nlck kp/  kp*    kp-
              tab  q    w    e    r    t    y    u    i    o    p    [    ]    \    del   end  pgdn  kp7  kp8  kp9    kp+
              @cap a    s    d    f    g    h    j    k    l    ;    '    ret                        kp4  kp5  kp6
              lshift z    x    c    v    b    n    m    ,    .    /    rshift             up         kp1  kp2  kp3    kprt
              lctrl lmeta lalt           spc             ralt rmeta  rctrl          lft  down  rght  kp0       kp.)

            (defalias
              cap (tap-hold 100 100 bspc lctrl)
              col (layer-switch colemak)
              qwe (layer-switch qwerty)
            )
          '';

          extraDefCfg = ''
            process-unmapped-keys yes
            ;; This is added in 1.7.0-prerelease-2
            ;; allow-hardware-repeat no
          '';
        };
      };
    };
  };
}