anchor.diff:      nativeBuildInputs = [ cmake ];
       buildInputs = [ libpng flex bison ];
     };
  -  buildPlugin = { pluginName, sha256, nativeBuildInputs ? [], buildInputs ? [], preConfigure ? "" }:
  +  buildPlugin = { pluginName, sha256, nativeBuildInputs ? [], buildInputs ? [], preConfigure ? "", postPatch ? "" }:
       stdenv.mkDerivation {
  -      name = "openfx-${pluginName}-${version}";
  +      pname = "openfx-${pluginName}";
  +      version = version;
         src = fetchurl {
  -        url = "https://github.com/MrKepzie/Natron/releases/download/${version}/openfx-${pluginName}-${version}.tar.xz";
  +        url = "https://github.com/NatronGitHub/openfx-${pluginName}/releases/download/Natron-${version}/openfx-${pluginName}-Natron-${version}.tar.xz";
           inherit sha256;
         };
  -      inherit nativeBuildInputs buildInputs;
  +      inherit nativeBuildInputs buildInputs postPatch;
         preConfigure = ''
           makeFlagsArray+=("CONFIG=release")
           makeFlagsArray+=("PLUGINPATH=$out/Plugins/OFX/Natron")
  
positive.code: { lib, stdenv, fetchurl, qt4, pkg-config, boost, expat, cairo, python2Packages,
    cmake, flex, bison, pango, librsvg, librevenge, libxml2, libcdr, libzip,
    poppler, imagemagick, openexr, ffmpeg_3, opencolorio, openimageio,
    qmake4Hook, libpng, libGL, lndir }:
  
  let
    minorVersion = "2.1";
    version = "${minorVersion}.9";
    OpenColorIO-Configs = fetchurl {
      url = "https://github.com/MrKepzie/OpenColorIO-Configs/archive/Natron-v${minorVersion}.tar.gz";
      sha256 = "9eec5a02ca80c9cd8e751013cb347ea982fdddd592a4a9215cce462e332dac51";
    };
    seexpr = stdenv.mkDerivation rec {
      version = "1.0.1";
  
negative.code:     license = lib.licenses.gpl2;
      maintainers = [ maintainers.puffnfresh ];
      platforms = platforms.linux;
    };
  }
  