flake/nixos/profiles/common/graphical/home/fonts/fonts.conf

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
  <its:rules version="1.0" xmlns:its="http://www.w3.org/2005/11/its">
    <its:translateRule selector="/fontconfig/*[not(self::description)]" translate="no"/>
  </its:rules>
  <description>trash Font Config 4.0</description>

  <match target="font">
    <!-- <edit mode="assign" name="antialias">         <bool>true</bool></edit> --> <!-- breaks emoji in GTK, unsure why -->
    <edit mode="assign" name="hinting">           <bool>true</bool></edit>
    <edit mode="assign" name="hintstyle">         <const>hintslight</const></edit>
    <edit mode="assign" name="autohint">          <bool>false</bool></edit>
    <edit mode="assign" name="embeddedbitmap">    <bool>false</bool></edit>
    <edit mode="assign" name="lcdfilter">         <const>lcddefault</const></edit>
    <edit mode="assign" name="rgba">              <const>rgb</const></edit>
  </match>

  <!-- Default fonts -->
  <alias binding="strong">
    <family>serif</family>
    <prefer>
      <family>Source Han Serif SC VF</family>
      <family>Noto Color Emoji</family>
    </prefer>
  </alias>

  <alias binding="strong">
    <family>sans-serif</family>
    <prefer>
      <family>Inter</family>
      <family>Source Han Sans SC VF</family>
      <family>Noto Color Emoji</family>
    </prefer>
  </alias>

  <alias binding="strong">
    <family>monospace</family>
    <prefer>
      <family>JetBrains Mono</family>
      <family>Source Han Sans SC VF</family>
      <family>Noto Color Emoji</family>
    </prefer>
  </alias>

  <alias binding="strong">
    <family>system-ui</family>
    <prefer>
      <family>Inter</family>
      <family>Source Han Sans SC VF</family>
      <family>Noto Color Emoji</family>
    </prefer>
  </alias>



  <!-- Rebind unliked/old fonts -->
  <!-- Sans -->
  <match target="pattern">
    <test name="family" qual="any"><string>Microsoft YaHei</string></test>
    <edit name="family" binding="same" mode="assign"><string>sans-serif</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>SimHei</string></test>
    <edit name="family" binding="same" mode="assign"><string>sans-serif</string></edit>
    </match>
  <match target="pattern">
    <test name="family" qual="any"><string>WenQuanYi Zen Hei</string></test>
    <edit name="family" binding="same" mode="assign"><string>sans-serif</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>WenQuanYi Micro Hei</string></test>
    <edit name="family" binding="same" mode="assign"><string>sans-serif</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>WenQuanYi Micro Hei Light</string></test>
    <edit name="family" binding="same" mode="assign"><string>sans-serif</string></edit>
  </match>

  <!-- Serif -->
  <match target="pattern">
    <test name="family" qual="any"><string>SimSun</string></test>
    <edit name="family" binding="same" mode="assign"><string>serif</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>SimSun-18030</string></test>
    <edit name="family" binding="same" mode="assign"><string>serif</string></edit>
  </match>

  <!-- Monospace -->
  <match target="pattern">
    <test name="family" qual="any"><string>Liberation Mono</string></test>
    <edit name="family" binding="same" mode="assign"><string>monospace</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>SF Mono</string></test>
    <edit name="family" binding="same" mode="assign"><string>monospace</string></edit>
  </match>
  <match target="pattern">
    <test name="family" qual="any"><string>Noto Sans Mono</string></test>
    <edit name="family" binding="same" mode="assign"><string>monospace</string></edit>
  </match>

  <!-- Reject DejaVu Sans -->
  <!-- why is DejaVu Sans still here after fonts.enableDefaultPackages = false -->
  <selectfont>
    <rejectfont>
        <pattern><patelt name="family" ><string>DejaVu Sans</string></patelt></pattern>
    </rejectfont>
  </selectfont>

</fontconfig>