cfg/.config/fontconfig/fonts.conf

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

  <!-- Use Google Emojis -->
  <match target="pattern">
    <test qual="any" name="family"><string>Segoe UI Emoji</string></test>
    <edit name="family" mode="assign" binding="same"><string>Noto Color Emoji</string></edit>
  </match>

  <match target="pattern">
    <test qual="any" name="family"><string>Helvetica</string></test>
    <edit name="family" mode="assign" binding="same"><string>Open Sans</string></edit>
  </match>

  <match target="pattern">
    <test qual="any" name="family"><string>monospace</string></test>
    <edit name="family" mode="assign" binding="same"><string>DejaVuSansM Nerd Font Mono</string></edit>
  </match>

  <match target="pattern">
    <test qual="any" name="family"><string>sans-serif</string></test>
    <edit name="family" mode="assign" binding="same"><string>Open Sans</string></edit>
  </match>

  <selectfont>
    <rejectfont>
      <pattern>
        <patelt name="family"><string>Tahoma</string></patelt>
      </pattern>
    </rejectfont>
  </selectfont>

</fontconfig>