anchor.diff:  
   buildDunePackage rec {
     pname = "torch";
  -  version = "0.8";
  -
  -  owner = "LaurentMazare";
  +  version = "0.9b";
   
     minimumOCamlVersion = "4.07";
   
     src = fetchFromGitHub {
  -    inherit owner;
  +    owner = "LaurentMazare";
       repo   = "ocaml-${pname}";
       rev    = version;
  -    sha256 = "19w31paj24pns2ahk9j9rgpkb5hpcd41kfaarxrlddww5dl6pxvi";
  +    sha256 = "1xn8zfs3viz80agckcpl9a4vjbq6j5g280i95jyy5s0zbcnajpnm";
     };
   
     propagatedBuildInputs = [
  
positive.code: { stdenv
  , buildDunePackage
  , fetchFromGitHub
  , cmdliner
  
negative.code:   doCheck = true;
    checkPhase = "dune runtest";
  
    meta = with lib; {
      inherit (src.meta) homepage;
      description = "Ocaml bindings to Pytorch";
      maintainers = [ maintainers.bcdarwin ];
  