added nix

flake.nix

@@ -0,0 +1,43 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+  outputs = { self, nixpkgs, utils }: utils.lib.eachDefaultSystem (system:
+    let
+      pkgs = nixpkgs.legacyPackages.${system};
+      pname = "stream-examples";
+      benchmark = pkgs.maven.buildMavenPackage {
+        mvnJdk = pkgs.jdk22;
+        pname = pname;
+        version = "0.1.0";
+        src = ./.;
+        nativeBuildInputs = [ pkgs.makeWrapper ];
+        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} \
+             --add-flags "-jar $out/share/${pname}/${pname}.jar"
+        '';
+
+      };
+    in
+    {
+      packages = {
+        benchmark = benchmark;
+      };
+      devShell = pkgs.mkShell {
+        buildInputs = with pkgs; [
+            jdk22
+            maven
+        ];
+      };
+    }
+  );
+}