anchor.diff:      };
     };
   
  +  exifread = buildPythonPackage rec {
  +    name = "ExifRead-2.1.2";
  +
  +    meta = {
  +      description = "Easy to use Python module to extract Exif metadata from tiff and jpeg files";
  +      homepage    = "https://github.com/ianare/exif-py";
  +      license     = "BSD";
  +      maintainers = with maintainers; [ vozz ];
  +    };
  +
  +    src = pkgs.fetchurl {
  +      url = "mirror://pypi/E/ExifRead/${name}.tar.gz";
  +      sha256 = "1b90jf6m9vxh9nanhpyvqdq7hmfx5iggw1l8kq10jrs6xgr49qkr";
  +    };
  +  };
  +
     fastimport = buildPythonPackage rec {
       name = "fastimport-${version}";
       version = "0.9.4";
  
positive.code:     };
      buildInputs = with self; [ pkgs.swig1 pkgs.coin3d pkgs.soqt pkgs.mesa pkgs.xorg.libXi ];
    };
  }
  
negative.code:     };
    };
  
    inifile = buildPythonPackage rec {
      name = "inifile-0.3";
  
      meta = {
        description = "A small INI library for Python";
        homepage    = "https://github.com/mitsuhiko/python-inifile";
        license     = "BSD";
        maintainers = with maintainers; [ vozz ];
      };
  
      src = pkgs.fetchurl {
        url = "mirror://pypi/i/inifile/${name}.tar.gz";
        sha256 = "0zgd53czc1irwx6b5zip8xlmyfr40hz2pd498d8yv61znj6lm16h";
      };
    };
  
    interruptingcow = buildPythonPackage rec {
      name = "interruptingcow-${version}";
  