File 61-stix-variants.conf of Package stix-fonts

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "../fonts.dtd">
<fontconfig>
  <alias binding="same">
    <family>STIXVariants</family>
    <accept>
      <family>STIXGeneral</family>
    </accept>
  </alias>
</fontconfig>