core/pkgs/by-name/fo/fontconfig/make-fonts-cache.nix
2024-05-13 22:24:10 +01:00

33 lines
842 B
Nix

{ runCommand, lib, fontconfig, fontDirectories }:
runCommand "fc-cache" {
nativeBuildInputs = [ fontconfig.bin ];
preferLocalBuild = true;
allowSubstitutes = false;
passAsFile = [ "fontDirs" ];
fontDirs = ''
<!-- Font directories -->
${lib.concatStringsSep "\n"
(map (font: "<dir>${font}</dir>") fontDirectories)}
'';
} ''
export FONTCONFIG_FILE=$(pwd)/fonts.conf
cat > fonts.conf << EOF
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'urn:fontconfig:fonts.dtd'>
<fontconfig>
<include>${fontconfig.out}/etc/fonts/fonts.conf</include>
<cachedir>$out</cachedir>
EOF
cat "$fontDirsPath" >> fonts.conf
echo "</fontconfig>" >> fonts.conf
mkdir -p $out
fc-cache -sv
# This is not a cache dir in the normal sense -- it won't be automatically
# recreated.
rm -f "$out/CACHEDIR.TAG"
''