dotfiles/files/.config/fontconfig/fonts.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
<fontconfig>
  <!-- default font -->
  <match>
   <edit mode="prepend" name="family">
    <string>sans-serif</string>
   </edit>
  </match>

  <!-- default sans-serif -->
  <match target="pattern">
    <test qual="any" name="family">
      <string>sans-serif</string>
    </test>
    <edit name="family" mode="prepend" binding="same"><string>Roboto</string></edit>
  </match>
  
  <!-- default serif -->
  <match target="pattern">
    <test qual="any" name="family">
      <string>serif</string>
    </test>
    <edit name="family" mode="prepend" binding="same"><string>Roboto Slab</string></edit>
  </match>

   <!-- default mono -->
  <match target="pattern">
    <test qual="any" name="family">
      <string>monospace</string>
    </test>
        <!--<edit name="family" mode="prepend" binding="same"><string>Hack Nerd Font</string></edit>-->
    <edit name="family" mode="prepend" binding="same"><string>Hack</string></edit>
    <edit name="family" mode="append" binding="same"><string>Roboto Mono</string></edit>
  </match>

  <!-- disable bitmap fonts -->
  <match target="font">
    <edit name="embeddedbitmap" mode="assign">
      <bool>false</bool>
    </edit>
  </match>

  <!-- fallback -->
  <alias>
   <family>sans-serif</family>
   <prefer>
    <family>Noto Sans</family>
    <family>Open Sans</family>
    <family>Droid Sans</family>
    <family>Ubuntu</family>
    <family>Roboto</family>
    <family>NotoSansCJK</family>
    <family>Source Han Sans JP</family>
    <family>IPAPGothic</family>
    <family>VL PGothic</family>
    <family>Koruri</family>
   </prefer>
  </alias>
  <alias>
   <family>serif</family>
   <prefer>
    <family>Noto Serif</family>
    <family>Droid Serif</family>
    <family>Roboto Slab</family>
    <family>IPAPMincho</family>
   </prefer>
  </alias>
  <alias>
   <family>monospace</family>
   <prefer>
    <family>Noto Sans Mono</family>
    <family>Inconsolatazi4</family>
    <family>Ubuntu Mono</family>
    <family>Droid Sans Mono</family>
    <family>Roboto Mono</family>
    <family>IPAGothic</family>
   </prefer>
  </alias>
</fontconfig>