Fix home manager dotfiles

home/dunst/default.nix

@@ -1,17 +1,14 @@
 { pkgs, ... }:
 
 let
-  menuify = pkgs.substituteAll {
-    src = ./menuify.sh;
-    isExecutable = true;
-    dir = "bin";
-    name = "menuify";
-
+  script = pkgs.replaceVars ./menuify.sh {
     bash = pkgs.bash;
     dmenu = pkgs.dmenu;
     gawk = pkgs.gawk;
     coreutils = pkgs.coreutils;
   };
+
+  menuify = pkgs.writeShellScriptBin "menuify" (builtins.readFile script);
 in
 {
   services.dunst = {