valkey: make compatible with services.redis module (#437478)

nixos/tests/redis.nix

@@ -10,7 +10,7 @@ let
   mkTestName =
     pkg: "${pkg.pname}_${builtins.replaceStrings [ "." ] [ "" ] (lib.versions.majorMinor pkg.version)}";
   redisPackages = {
-    inherit (pkgs) redis keydb;
+    inherit (pkgs) redis keydb valkey;
   };
   makeRedisTest =
     {

pkgs/by-name/va/valkey/package.nix

@@ -6,6 +6,7 @@
   lua,
   jemalloc,
   pkg-config,
+  nixosTests,
   tcl,
   which,
   ps,
@@ -116,6 +117,11 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postCheck
   '';
 
+  passthru = {
+    tests.redis = nixosTests.redis;
+    serverBin = "valkey-server";
+  };
+
   meta = with lib; {
     homepage = "https://valkey.io/";
     description = "High-performance data structure server that primarily serves key/value workloads";