Use lib.meta.getExe

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

users/configs/gtk/default.nix

@@ -1,4 +1,4 @@
-{ user ? throw "user argument is required" }: { config, pkgs, ... }:
+{ user ? throw "user argument is required" }: { config, lib, pkgs, ... }:
 
 let
   hmConfig = config.home-manager.users."${user.name}";
@@ -29,22 +29,21 @@ in
       };
     };
 
-    theme.extraConfig = let name = "theme-gtk"; in
-      "${pkgs.writeShellApplication {
-        inherit name;
-        runtimeInputs = with pkgs; [ dconf ];
-        text = ''
-          MODE=$(cat "${hmConfig.theme.configDir}/mode")
+    theme.extraConfig = "${lib.meta.getExe (pkgs.writeShellApplication {
+      name = "theme-gtk";
+      runtimeInputs = with pkgs; [ dconf ];
+      text = ''
+        MODE=$(cat "${hmConfig.theme.configDir}/mode")
 
-          if [ "$MODE" = "light" ]; then
-            GTK_THEME="adw-gtk3"
-          else
-            GTK_THEME="adw-gtk3-dark"
-          fi
+        if [ "$MODE" = "light" ]; then
+          GTK_THEME="adw-gtk3"
+        else
+          GTK_THEME="adw-gtk3-dark"
+        fi
 
-          dconf write /org/gnome/desktop/interface/gtk-theme "'$GTK_THEME'"
-          dconf write /org/gnome/desktop/interface/color-scheme "'prefer-$MODE'"
-        '';
-      }}/bin/${name} &";
+        dconf write /org/gnome/desktop/interface/gtk-theme "'$GTK_THEME'"
+        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-$MODE'"
+      '';
+      })} &";
   };
 }