nix-store-veritysetup-generator: add VM test to passthru

pkgs/by-name/ni/nix-store-veritysetup-generator/package.nix

@@ -3,6 +3,7 @@
   rustPlatform,
   fetchFromGitHub,
   systemd,
+  nixosTests,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -34,6 +35,10 @@ rustPlatform.buildRustPackage rec {
 
   stripAllList = [ "bin" ];
 
+  passthru.tests = {
+    inherit (nixosTests) nix-store-veritysetup;
+  };
+
   meta = with lib; {
     description = "Systemd unit generator for a verity protected Nix Store";
     homepage = "https://github.com/nikstur/nix-store-veritysetup-generator";