env/xdg-config-dir/fontconfig/fonts.conf

<?xml version="1.0" ?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!-- See LICENSE file for copyright and license details. -->
<fontconfig>
	<!-- change default fonts -->
	<alias>
		<family>monospace</family>
		<prefer>
			<family>DejaVu Sans Mono</family>
			<family>M+ 1m</family>
		</prefer>
	</alias>
	<alias>
		<family>sans-serif</family>
		<prefer>
			<family>DejaVu Sans</family>
			<family>M+ 1p</family>
		</prefer>
	</alias>
	<alias>
		<family>serif</family>
		<prefer>
			<family>DejaVu Serif</family>
			<family>M+ 1p</family>
		</prefer>
	</alias>

	<!-- whitelist bitmaps font -->
	<selectfont>
		<acceptfont>
			<pattern>
				<or>
					<patelt name="family"><string>bitocra</string></patelt>
					<patelt name="family"><string>Fixed</string></patelt>
				</or>
			</pattern>
		</acceptfont>
	</selectfont>

	<!-- disable ligatures for monospace fonts -->
	<!-- Inspired by https://github.com/agriffis/skel/blob/69211a82584bf1bf1bbd6f0817d8611a5d967bfc/fontconfig/.config/fontconfig/fonts.conf#L127 -->
	<match>
		<test name="family" compare="contains">
			<string>monospace</string>
		</test>
		<edit name="fontfeatures" mode="append">
			<string>calt off</string>
			<string>clig off</string>
			<string>dlig off</string>
			<string>liga off</string>
		</edit>
	</match>
</fontconfig>