fonts.conf

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>

 <alias>
    <family>serif</family>
    <prefer>
        <family>Linux Libertine</family>
        <family>Noto Sans</family>
        <family>Noto Color Emoji</family>
        <family>Noto Emoji</family>
        <family>DejaVu Sans</family>
    </prefer>
  </alias>
  <alias>
    <family>sans-serif</family>
    <prefer>
        <family>Linux Biolinum</family>
        <family>Noto Serif</family>
        <family>Noto Color Emoji</family>
        <family>Noto Emoji</family>
        <family>DejaVu Serif</family>
    </prefer>
  </alias>
  <alias>
    <family>sans</family>
    <prefer><family>Linux Biolinum</family></prefer>
  </alias>
  <alias>
    <family>monospace</family>
    <prefer>
        <family>Inconsolata</family>
        <family>Noto Mono</family>
        <family>Noto Color Emoji</family>
        <family>Noto Emoji</family>
    </prefer>
  </alias>

</fontconfig>