Added kanata

modules/system/kanata.nix

@@ -0,0 +1,47 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.samfelag.modules.system.kanata;
+in
+{
+  options.samfelag.modules.system.kanata = {
+    enable = lib.mkEnableOption "kanata";
+  };
+
+  config = lib.mkIf cfg.enable {
+    users.users.${config.user.name}.extraGroups = [
+      "input"
+      "uinput"
+    ];
+    services.kanata = {
+      enable = true;
+      keyboards = {
+        internalKeyboard = {
+          extraDefCfg = "process-unmapped-keys yes";
+          config = ''
+            (defsrc
+              a s d f h j k l
+            )
+            (defvar
+              tap-time 150
+              hold-time 200
+            )
+            (defalias
+              a (tap-hold $tap-time $hold-time a lalt)
+              s (tap-hold $tap-time $hold-time s lsft)
+              d (tap-hold $tap-time $hold-time d lmet)
+              f (tap-hold $tap-time $hold-time f lctl)
+              h (tap-hold $tap-time $hold-time h rctl)
+              j (tap-hold $tap-time $hold-time j rmet)
+              k (tap-hold $tap-time $hold-time k rsft)
+              l (tap-hold $tap-time $hold-time l ralt)
+            )
+            (deflayer base
+              @a  @s  @d  @f  @h  @j  @k  @l
+            )
+          '';
+        };
+      };
+    };
+  };
+}