added jvms

flake.nix

@@ -7,8 +7,8 @@
     let
       pkgs = nixpkgs.legacyPackages.${system};
       pname = "stream-examples";
-      benchmark = pkgs.maven.buildMavenPackage {
-        mvnJdk = pkgs.jdk22;
+      benchmark = (jdk : pkgs.maven.buildMavenPackage {
+        mvnJdk = jdk;
         pname = pname;
         version = "0.1.0";
         src = ./.;
@@ -16,21 +16,19 @@
         mvnHash = "sha256-G7PQd0Ul61m+C9S7OvAB6NkMxRM8AMYg5+1G0RQeXP8=";
 
         installPhase = ''
-        ls -lrth
-
         mkdir -p $out/bin $out/share/${pname}
         install -Dm644 target/stream-examples.jar $out/share/${pname}/${pname}.jar
         echo 'didier rocks!'
         mkdir -p $out/bin $out/share/${pname}
-        makeWrapper ${pkgs.jdk22}/bin/java $out/bin/${pname} \
+        makeWrapper ${jdk}/bin/java $out/bin/${pname} \
              --add-flags "-jar $out/share/${pname}/${pname}.jar"
         '';
-
-      };
+      });
     in
     {
       packages = {
-        benchmark = benchmark;
+        benchmark-openjdk = benchmark pkgs.jdk22;
+        benchmark-graal = benchmark pkgs.graalvm-ce;
       };
       devShell = pkgs.mkShell {
         buildInputs = with pkgs; [