volnoti: use cfg.package instead of pkgs

modules/services/volnoti.nix

@@ -37,7 +37,7 @@ in {
 
       Install = { WantedBy = [ "graphical-session.target" ]; };
 
-      Service = { ExecStart = "${pkgs.volnoti}/bin/volnoti -v -n"; };
+      Service = { ExecStart = "${lib.getExe cfg.package} -v -n"; };
     };
   };
 }

tests/default.nix

@@ -287,6 +287,7 @@ in import nmtSrc {
     ./modules/services/trayscale
     ./modules/services/twmn
     ./modules/services/udiskie
+    ./modules/services/volnoti
     ./modules/services/window-managers/bspwm
     ./modules/services/window-managers/herbstluftwm
     ./modules/services/window-managers/hyprland

tests/modules/services/volnoti/default.nix

@@ -0,0 +1 @@
+{ volnoti-package-option = ./package-option.nix; }

tests/modules/services/volnoti/package-option.nix

@@ -0,0 +1,31 @@
+{ config, ... }:
+
+{
+  services.volnoti = {
+    enable = true;
+    package = config.lib.test.mkStubPackage {
+      name = "volnoti";
+      outPath = "@volnoti@";
+    };
+  };
+
+  test.stubs.volnoti = { };
+
+  nmt.script = ''
+    serviceFile=home-files/.config/systemd/user/volnoti.service
+    assertFileExists $serviceFile
+    assertFileContent $serviceFile \
+      ${
+        builtins.toFile "expected-volnoti.service" ''
+          [Install]
+          WantedBy=graphical-session.target
+
+          [Service]
+          ExecStart=@volnoti@/bin/volnoti -v -n
+
+          [Unit]
+          Description=volnoti
+        ''
+      }
+  '';
+}