Use clang instead of the stdenv and add test

isabel/slurm/flake.nix

@@ -3,18 +3,34 @@
   outputs = { self, bscpkgs }:  
   let
     nixpkgs = bscpkgs.inputs.nixpkgs;
+    clusterOverlay = (final: prev: {
+      # Use cluster llvm compiler repo
+      clangOmpss2Unwrapped = prev.clangOmpss2Unwrapped.override {
+        useGit = true;
+        gitUrl = "ssh://git@bscpm04.bsc.es/ompss-2-at-cluster/llvm.git";
+        gitCommit = "151c260ba834826c01855da0a41fc203ffe4d025";
+        gitBranch = "cluster";
+      };
+    });
     pkgs = import nixpkgs {
       system = "x86_64-linux";
-      overlays = [ bscpkgs.outputs.bscOverlay ];
+      overlays = [
+        # Apply bscpkgs to get our BSC custom packages
+        bscpkgs.outputs.bscOverlay
+        # And on top apply our local changes to customize for cluster
+        clusterOverlay
+      ];
     };
   in {
     devShells.x86_64-linux.default = pkgs.mkShell {
       pname = "devshell";
-      #buildInputs = with pkgs; [
-      #  gcc # more packages here...
-      #];
+      buildInputs = with pkgs; [
+        slurm.out slurm.dev gcc
+        clangOmpss2
+        nanos6
+      ];
       inputsFrom = with pkgs; [
-        slurm nanos6
+        nanos6
       ];
     };
   };

isabel/slurm/llvmTest.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main()
+{
+	#pragma oss task node(0)
+    {
+        printf("Tasking\n");
+    }
+    #pragma oss taskwait
+    printf("Past the task\n");
+    return 0;
+}