\defaultfontfeatures[TeXGyrePagellaX]
  {
  Extension = .otf ,
  UprightFont = TeXGyrePagellaX-Regular ,
  BoldFont = TeXGyrePagellaX-Bold ,
  ItalicFont = TeXGyrePagellaX-Italic ,
  BoldItalicFont = TeXGyrePagellaX-BoldItalic ,
  SlantedFont = TeXGyrePagellaX-Slanted ,
  BoldSlantedFont = TeXGyrePagellaX-BoldSlanted ,
  }
