ghostty: reload service on configuration change

modules/programs/ghostty.nix

@@ -231,6 +231,15 @@ in
         xdg.configFile."systemd/user/app-com.mitchellh.ghostty.service.d/overrides.conf".text = ''
           [Unit]
           X-SwitchMethod=keep-old
+          X-Reload-Triggers=${
+            let
+              storePathOf = name: config.xdg.configFile.${name}.source;
+            in
+            toString (
+              lib.optionals (cfg.settings != { }) [ (storePathOf "ghostty/config") ]
+              ++ lib.mapAttrsToList (name: _: storePathOf "ghostty/themes/${name}") cfg.themes
+            )
+          }
         '';
 
         dbus.packages = [ cfg.package ];

tests/modules/programs/ghostty/systemd-service.nix

@@ -8,6 +8,33 @@
       theme = "catppuccin-mocha";
       font-size = 10;
     };
+    themes = {
+      catppuccin-mocha = {
+        palette = [
+          "0=#45475a"
+          "1=#f38ba8"
+          "2=#a6e3a1"
+          "3=#f9e2af"
+          "4=#89b4fa"
+          "5=#f5c2e7"
+          "6=#94e2d5"
+          "7=#bac2de"
+          "8=#585b70"
+          "9=#f38ba8"
+          "10=#a6e3a1"
+          "11=#f9e2af"
+          "12=#89b4fa"
+          "13=#f5c2e7"
+          "14=#94e2d5"
+          "15=#a6adc8"
+        ];
+        background = "1e1e2e";
+        foreground = "cdd6f4";
+        cursor-color = "f5e0dc";
+        selection-background = "353749";
+        selection-foreground = "cdd6f4";
+      };
+    };
   };
 
   nmt.script = ''
@@ -15,10 +42,11 @@
     serviceOverridesPath=$servicePath.d/overrides.conf
 
     assertFileExists $serviceOverridesPath
-    assertFileContent $serviceOverridesPath \
+    assertFileContent $(normalizeStorePaths $serviceOverridesPath) \
       ${builtins.toFile "ghostty-service-overrides" ''
         [Unit]
         X-SwitchMethod=keep-old
+        X-Reload-Triggers=/nix/store/00000000000000000000000000000000-ghostty-config /nix/store/00000000000000000000000000000000-ghostty-catppuccin-mocha-theme
       ''}
 
     assertFileContent \