WIP: first serial experiment. Don't know how to add gcc to compile

garlic/apps/hpcg/default.nix

@@ -1,8 +1,5 @@
 {
   stdenv
-, nanos6
-, mpi
-, tampi
 , cc
 , gitBranch ? "garlic/seq"
 , makefileName ? "Linux_Serial"
@@ -21,12 +18,14 @@ stdenv.mkDerivation rec {
   '';
 
   buildInputs = [
-    nanos6
-    mpi
-    tampi
     cc
   ];
 
+  makeFlags = [
+    "CC=${cc.cc.CC}"
+    "CXX=${cc.cc.CXX}"
+  ];
+
   enableParallelBuilding = true;
 
   configurePhase = ''

overlay.nix

@@ -258,6 +258,9 @@ let
             hybrid = callPackage ./garlic/exp/creams/ss+hybrid.nix { };
           };
         };
+
+        hpcg = {
+          serial = callPackage ./garlic/exp/hpcg/serial.nix { };
         };
 
         test = {
@@ -275,6 +278,7 @@ let
         };
       };
     };
+  };
 
 in
   {