anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "azpainter";
  -  version = "2.1.5";
  +  version = "2.1.6";
   
     src = fetchFromGitHub {
       owner = "Symbian9";
       repo = pname;
  -    rev = "refs/tags/v${version}";
  -    sha256 = "0x5jmsprjissqcvwq75pqq9wgv4k9b7cy507hai8xk6xs3vxwgba";
  +    rev = "v${version}";
  +    sha256 = "sha256-al87Rnf4HkKdmtN3EqxC0zEHgVWwnVi7WttqT/Qxr0Q=";
     };
  -
  -  nativeBuildInputs = [ autoreconfHook ];
   
     buildInputs = [
       libX11 libXext libXi
  
positive.code: { stdenv, fetchFromGitHub, autoreconfHook
  , libX11, libXext, libXi
  , freetype, fontconfig
  , libpng, libjpeg
  
negative.code:     zlib
    ];
  
    meta = with stdenv.lib; {
      description = "Full color painting software for illustration drawing";
      homepage = "https://osdn.net/projects/azpainter";
      license = licenses.gpl3Plus;
      maintainers = with maintainers; [ dtzWill ];
      platforms = with platforms; linux ++ darwin;
    };
  }
  