anchor.diff:  
   buildDunePackage rec {
     pname = "torch";
  -  version = "0.14";
  -
  -  useDune2 = true;
  +  version = "0.15";
   
     minimalOCamlVersion = "4.08";
   
  
positive.code:     owner = "LaurentMazare";
      repo   = "ocaml-${pname}";
      rev    = version;
      sha256 = "sha256:039anfvzsalbqi5cdp95bbixcwr2ngharihgd149hcr0wa47y700";
    };
  
    buildInputs = [ dune-configurator ];
  
negative.code:     description = "Ocaml bindings to Pytorch";
      maintainers = [ maintainers.bcdarwin ];
      license = licenses.asl20;
    };
  }
  