Add a notification daemon.

nix/configuration/roles/sway/default.nix

@@ -263,6 +263,7 @@ in
     ./lockscreen.nix
     ./screenshot.nix
     ./force_focus.nix
+    ./notification.nix
   ];
 
   options.me.swayIncludes = lib.mkOption {

nix/configuration/roles/sway/notification.nix

@@ -0,0 +1,32 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  notification_sway_config = pkgs.writeTextFile {
+    name = "notification.conf";
+    text =
+      builtins.replaceStrings
+        [ "@mako@" "@makoctl@" ]
+        [ "${pkgs.mako}/bin/mako" "${pkgs.mako}/bin/makoctl" ]
+        ''
+          bindsym $mod+Escape exec @makoctl@ dismiss
+          bindsym $mod+Shift+Escape exec @makoctl@ invoke
+
+          # Notifications
+          exec @mako@
+        '';
+  };
+in
+{
+  imports = [ ];
+
+  config = lib.mkIf config.me.graphical {
+    me.swayIncludes = [
+      notification_sway_config
+    ];
+  };
+}