modules/system/services/pc/default.nix

@@ -3,6 +3,7 @@
   imports = [
     ./fwupd
     ./gnome-keyring
+    ./keyd
     ./mpd
     ./networkfs
     ./polkit

modules/system/services/pc/keyd/default.nix

@@ -0,0 +1,14 @@
+{ ... }:
+{
+  services.keyd = {
+    enable = true;
+    keyboards.default = {
+      ids = [ "*" ];
+      settings.main = {
+        capslock = "overload(control, esc)";
+        leftcontrol = "leftmeta";
+        f13 = "delete";
+      };
+    };
+  };
+}