anchor.diff:      description = "A PDF rendering library";
   
       longDescription = ''
  -      Poppler is a PDF rendering library based on the xpdf-3.0 code base.
  +      Poppler is a PDF rendering library based on the xpdf-3.0 code
  +      base. In addition it provides a number of tools that can be
  +      installed separately.
       '';
   
       license = licenses.gpl2;
  
positive.code: , qt4Support ? false, qt4 ? null
  , qt5Support ? false, qtbase ? null
  , introspectionSupport ? false, gobjectIntrospection ? null
  , utils ? false
  , minimal ? false, suffix ? "glib"
  , hostPlatform
  }:
  
negative.code:     ++ optionals (!minimal) [ cairo lcms curl ]
      ++ optional qt4Support qt4
      ++ optional qt5Support qtbase
      ++ optional utils nss
      ++ optional introspectionSupport gobjectIntrospection;
  
    nativeBuildInputs = [ pkgconfig ];
  