profile/home/dotfiles/config/fontconfig/fonts.conf

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <!-- generic name aliasing -->
  <alias>
    <family>sans-serif</family>
    <prefer>
      <family>Segoe UI</family>
    </prefer>
  </alias>
  <alias>
    <family>serif</family>
    <prefer>
      <family>Liberation Serif</family>
    </prefer>
  </alias>
  <alias>
    <family>monospace</family>
    <prefer>
      <family>Fantasque Sans Mono</family>
    </prefer>
  </alias>
  <alias>
    <family>emoji</family>
    <prefer>
      <family>Twitter Color Emoji</family>
    </prefer>
  </alias>

  <!-- emoji support -->
  <match>
    <test name="family">
      <string>serif</string>
    </test>
    <edit name="family" mode="prepend" binding="weak">
      <string>emoji</string>
    </edit>
  </match>
  <match>
    <test name="family">
      <string>sans-serif</string>
    </test>
    <edit name="family" mode="prepend" binding="weak">
      <string>emoji</string>
    </edit>
  </match>
  <match>
    <test name="family">
      <string>monospace</string>
    </test>
    <edit name="family" mode="prepend" binding="weak">
      <string>emoji</string>
    </edit>
  </match>

  <!-- powerline symbols -->
  <match>
    <test name="family">
      <string>monospace</string>
    </test>
    <edit name="family" mode="prepend">
      <string>PowerlineSymbols</string>
    </edit>
  </match>
</fontconfig>