fontawesome-fonts/fontawesome-fonts-fontconfig.conf

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <match target="scan">
    <test name="family">
      <string>Font Awesome 5 Brands</string>
    </test>
    <edit name="family">
      <string>FontAwesome</string>
    </edit>
    <edit name="fullname">
      <string>FontAwesome</string>
    </edit>
  </match>
  <match target="scan">
    <test name="family">
      <string>Font Awesome 5 Free</string>
    </test>
    <edit name="family">
      <string>FontAwesome</string>
    </edit>
    <edit name="fullname">
      <string>FontAwesome</string>
    </edit>
  </match>
  <match target="scan">
    <test name="family">
      <string>FontAwesome</string>
    </test>
    <test name="style">
      <string>Solid</string>
    </test>
    <edit name="fullname">
      <string>FontAwesome Black</string>
    </edit>
    <edit name="style">
      <string>Black</string>
    </edit>
  </match>
  <alias>
    <family>fantasy</family>
    <prefer>
        <family>FontAwesome</family>
    </prefer>
  </alias>
  <alias>
    <family>FontAwesome</family>
    <default>
      <family>fantasy</family>
    </default>
  </alias>
  <alias>
    <family>Font Awesome 5 Brands</family>
    <default>
      <family>FontAwesome</family>
    </default>
  </alias>
  <alias>
    <family>Font Awesome 5 Free</family>
    <default>
      <family>FontAwesome</family>
    </default>
  </alias>
</fontconfig>