anchor.diff:  , openexr
   , robin-map
   , unzip
  +, fmt
   }:
   
   stdenv.mkDerivation rec {
     pname = "openimageio";
  -  version = "2.1.9.0";
  +  version = "2.2.12.0";
   
     src = fetchFromGitHub {
       owner = "OpenImageIO";
       repo = "oiio";
       rev = "Release-${version}";
  -    sha256 = "1bbxx3bcc5jlb90ffxbk29gb8227097rdr8vg97vj9axw2mjd5si";
  +    sha256 = "16z8lnsqhljbfaarfwx9rc95p0a9wxf4p271j6kxdfknjb88p56i";
     };
  -
  -  patches = [
  -    (fetchpatch {
  -      url = "https://github.com/OpenImageIO/oiio/pull/2441/commits/e9bdd69596103edf41b659ad8ab0ca4ce002f6f5.patch";
  -      sha256 = "0x1wmjf1jrm19d1izhs1cs3y1if9al1zx48lahkfswyjag3r5dn0";
  -    })
  -  ];
   
     outputs = [ "bin" "out" "dev" "doc" ];
   
  
positive.code:     opencolorio
      openexr
      robin-map
    ];
  
    cmakeFlags = [
  
negative.code: { lib, stdenv
  , fetchFromGitHub
  , boost
  , cmake
  , ilmbase
  