38 lines
1.1 KiB
Nix
38 lines
1.1 KiB
Nix
{ runCommand, lib, fontconfig, fontDirectories, stdenv, buildPackages }:
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let
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# Use a build-platform fc-cache when cross-compiling to avoid Exec format errors.
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fc = if stdenv.buildPlatform != stdenv.hostPlatform
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then buildPackages.fontconfig
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else fontconfig;
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in runCommand "fc-cache"
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{
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nativeBuildInputs = [ fc.bin ];
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preferLocalBuild = true;
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allowSubstitutes = false;
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passAsFile = [ "fontDirs" ];
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fontDirs = ''
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<!-- Font directories -->
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${lib.concatStringsSep "\n" (map (font: "<dir>${font}</dir>") fontDirectories)}
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'';
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}
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''
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export FONTCONFIG_FILE=$(pwd)/fonts.conf
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cat > fonts.conf << EOF
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<?xml version='1.0'?>
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<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
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<fontconfig>
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<include>${fontconfig.out}/etc/fonts/fonts.conf</include>
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<cachedir>$out</cachedir>
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EOF
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cat "$fontDirsPath" >> fonts.conf
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echo "</fontconfig>" >> fonts.conf
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mkdir -p $out
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fc-cache -sv
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# This is not a cache dir in the normal sense -- it won't be automatically
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# recreated.
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rm -f "$out/CACHEDIR.TAG"
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''
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