Update openblas with debug symbols

etc/nix/openblas.nix

@@ -1,15 +1,33 @@
 { pkgs, ... }:
 
+let
+
+  /*
+  myopenblas = pkgs.openblas.overrideDerivation (old:
     {
+      dontStrip = true;
+      doCheck = false;
+      CFLAGS = "-g";
+      FCLAGS = "-g";
+    }
+  );
+  */
+
+  myopenblas = pkgs.enableDebugging pkgs.openblas;
+
+in
+
+{
+
   buildInputs = with pkgs; [
-    openblas
+    myopenblas
     scalapack
   ];
 
   shellHook = ''
+    export OPENBLAS_PATH=${myopenblas}
     export SCALAPACK_PATH=${pkgs.scalapack}
     export LD_LIBRARY_PATH=${pkgs.scalapack}/lib:$LD_LIBRARY_PATH
   '';
+
 }
-
-