Add clsync tool

default.nix

@@ -9,6 +9,9 @@ let
 
   self.bsc = rec {
 
+    nixpkgs = pkgs;
+
+
     # Load the default implementation
     #mpi = mpich;
     #mpi = openmpi;
@@ -195,6 +198,8 @@ let
       nixUnstable
       nixFlakes;
 
+    clsync = callPackage ./bsc/clsync/default.nix { };
+
     nixStatic = (callPackageStatic ./bsc/nix/static.nix {
         callPackage = callPackageWith (pkgs.pkgsStatic);
         storeDir = "/nix/store";