fix: betterlockscreen failing on suspend

flake.nix

@@ -149,6 +149,7 @@
         (import ./overlays/calibre-web.nix)
         (import ./overlays/disko.nix inputs)
         (import ./overlays/tree-sitter.nix inputs)
+        (import ./overlays/betterlockscreen.nix)
       ];
 
       # System types to support.

overlays/betterlockscreen.nix

@@ -0,0 +1,4 @@
+# Disable dunst so that it's not attempting to reach a non-existent dunst service
+_final: prev: {
+  betterlockscreen = prev.betterlockscreen.override { withDunst = false; };
+}