Try kanata for configuring my laptop keyboard

modules/nixos/default.nix

@@ -1 +1,6 @@
-{ imports = [ ./docker.nix ]; }
+{
+  imports = [
+    ./docker.nix
+    ./kanata.nix
+  ];
+}

modules/nixos/kanata.nix

@@ -0,0 +1,42 @@
+{
+  services.kanata = {
+    enable = true;
+
+    keyboards = {
+      internalKeyboard = {
+        devices = [
+          "/dev/input/event18" # lemp11
+        ];
+
+        extraDefCfg = "process-unmapped-keys yes";
+
+        config = ''
+          (defsrc
+            caps a s d f j k l ;
+          )
+
+          (defvar
+            tap-time 150
+            hold-time 200
+          )
+
+          (defalias
+            escctrl (tap-hold 100 100 esc lctl)
+            a (tap-hold $tap-time $hold-time a lmet)
+            s (tap-hold $tap-time $hold-time s lalt)
+            d (tap-hold $tap-time $hold-time d lsft)
+            f (tap-hold $tap-time $hold-time f lctl)
+            j (tap-hold $tap-time $hold-time j rctl)
+            k (tap-hold $tap-time $hold-time k rsft)
+            l (tap-hold $tap-time $hold-time l ralt)
+            ; (tap-hold $tap-time $hold-time ; rmet)
+          )
+
+          (deflayer base
+            @escctrl @a @s @d @f @j @k @l @;
+          )
+        '';
+      };
+    };
+  };
+}