Add OmpSs-2 simple example

ompss2/flake.nix

@@ -0,0 +1,36 @@
+{
+  inputs.jungle.url = "git+https://jungle.bsc.es/git/rarias/jungle";
+  outputs = { self, jungle }:
+  let
+    nixpkgs = jungle.inputs.nixpkgs;
+    customOverlay = (final: prev: {
+      # Example overlay, for now empty
+    });
+    pkgs = import nixpkgs {
+      system = "x86_64-linux";
+      overlays = [
+        # Apply jungle overlay to get our BSC custom packages
+        jungle.outputs.bscOverlay
+        # And on top apply our local changes to customize for cluster
+        customOverlay
+      ];
+    };
+  in {
+    devShells.x86_64-linux.default = pkgs.mkShell {
+      pname = "ompss2-devshell";
+      # Include these packages in the shell
+      packages = with pkgs; [
+        clangOmpss2Nodes
+        nodes
+        nosv
+        ovni
+        # Optional: Add wxparaver to open .prv traces (needs a working $DISPLAY)
+        # wxparaver
+      ];
+      # The dependencies needed to build these packages will be also included
+      inputsFrom = with pkgs; [
+        
+      ];
+    };
+  };
+}