anchor.diff: -{ stdenv, fetchurl, fetchFromGitHub, cmake, pkgconfig
  -, opencv, openexr, graphicsmagick, fftw, zlib, libjpeg, libtiff, libpng
  -, curl, krita, qtbase, qttools
  -, fetchgit }:
  +{ stdenv
  +, fetchurl
  +, fetchFromGitHub
  +, cmake
  +, pkgconfig
  +, opencv
  +, openexr
  +, graphicsmagick
  +, fftw
  +, zlib
  +, libjpeg
  +, libtiff
  +, libpng
  +, curl
  +, krita
  +, qtbase
  +, qttools
  +, fetchgit
  +}:
   
   let
     version = "2.3.6";
  -
   in stdenv.mkDerivation rec {
     pname = "gmic_krita_qt";
     inherit version;
  
positive.code:     owner = "c-koi";
      repo = "gmic-qt";
      rev = "v.${version}";
      sha256= "0j9wqlq67dwzir36yg58xy5lbblwizvgcvlmzcv9d6l901d5ayf3";
    };
  
    unpackPhase = ''
  
negative.code:     make -C ../gmic/src CImg.h gmic_stdlib.h
    '';
  
    nativeBuildInputs = [
      cmake
      pkgconfig
    ];
  
    buildInputs = [
      qtbase
      qttools
      fftw
      zlib
      libjpeg
      libtiff
      libpng
      opencv
      openexr
      graphicsmagick
      curl
      krita
    ];
  
    cmakeFlags = [
      "-DGMIC_QT_HOST=krita"
    ];
  
    installPhase = ''
      mkdir -p $out/bin;
  