{ config, pkgs, lib, ... }: with lib; let cfg = config.fonts.fontconfig; fcBool = x: "" + (boolToString x) + ""; # back-supported fontconfig version and package # version is used for font cache generation supportVersion = "210"; supportPkg = pkgs."fontconfig_${supportVersion}"; # latest fontconfig version and package # version is used for configuration folder name, /etc/fonts/VERSION/ # note: format differs from supportVersion and can not be used with makeCacheConf latestVersion = pkgs.fontconfig.configVersion; latestPkg = pkgs.fontconfig; # supported version fonts.conf supportFontsConf = pkgs.makeFontsConf { fontconfig = supportPkg; fontDirectories = config.fonts.fonts; }; # configuration file to read fontconfig cache # version dependent # priority 0 cacheConfSupport = makeCacheConf { version = supportVersion; }; cacheConfLatest = makeCacheConf {}; # generate the font cache setting file for a fontconfig version # use latest when no version is passed makeCacheConf = { version ? null }: let fcPackage = if version == null then "fontconfig" else "fontconfig_${version}"; makeCache = fontconfig: pkgs.makeFontsCache { inherit fontconfig; fontDirectories = config.fonts.fonts; }; cache = makeCache pkgs."${fcPackage}"; cache32 = makeCache pkgs.pkgsi686Linux."${fcPackage}"; in pkgs.writeText "fc-00-nixos-cache.conf" '' ${concatStringsSep "\n" (map (font: "${font}") config.fonts.fonts)} ${cache} ${optionalString (pkgs.stdenv.isx86_64 && cfg.cache32Bit) '' ${cache32} ''} ''; localConf = pkgs.writeText "fc-local.conf" cfg.localConf; # The configuration to be included in /etc/font/ penultimateConf = pkgs.runCommand "font-penultimate-conf" { preferLocalBuild = true; } '' support_folder=$out/etc/fonts/conf.d latest_folder=$out/etc/fonts/${latestVersion}/conf.d mkdir -p $support_folder mkdir -p $latest_folder ln -s ${supportFontsConf} $support_folder/../fonts.conf ln -s ${latestPkg.out}/etc/fonts/fonts.conf \ $latest_folder/../fonts.conf # fontconfig-penultimate various configuration files ln -s ${pkgs.fontconfig-penultimate}/etc/fonts/conf.d/*.conf \ $support_folder ln -s ${pkgs.fontconfig-penultimate}/etc/fonts/conf.d/*.conf \ $latest_folder ln -s ${cacheConfSupport} $support_folder/00-nixos-cache.conf ln -s ${cacheConfLatest} $latest_folder/00-nixos-cache.conf rm $support_folder/10-antialias.conf $latest_folder/10-antialias.conf ln -s ${antialiasConf} $support_folder/10-antialias.conf ln -s ${antialiasConf} $latest_folder/10-antialias.conf rm $support_folder/10-hinting.conf $latest_folder/10-hinting.conf ln -s ${hintingConf} $support_folder/10-hinting.conf ln -s ${hintingConf} $latest_folder/10-hinting.conf ${optionalString cfg.useEmbeddedBitmaps '' rm $support_folder/10-no-embedded-bitmaps.conf rm $latest_folder/10-no-embedded-bitmaps.conf ''} rm $support_folder/10-subpixel.conf $latest_folder/10-subpixel.conf ln -s ${subpixelConf} $support_folder/10-subpixel.conf ln -s ${subpixelConf} $latest_folder/10-subpixel.conf ${optionalString (cfg.dpi != 0) '' ln -s ${dpiConf} $support_folder/11-dpi.conf ln -s ${dpiConf} $latest_folder/11-dpi.conf ''} ${optionalString (!cfg.includeUserConf) '' rm $support_folder/50-user.conf rm $latest_folder/50-user.conf ''} # 51-local.conf rm $latest_folder/51-local.conf substitute \ ${pkgs.fontconfig-penultimate}/etc/fonts/conf.d/51-local.conf \ $latest_folder/51-local.conf \ --replace local.conf /etc/fonts/${latestVersion}/local.conf # local.conf (indirect priority 51) ${optionalString (cfg.localConf != "") '' ln -s ${localConf} $out/etc/fonts/local.conf ln -s ${localConf} $out/etc/fonts/${latestVersion}/local.conf ''} ln -s ${defaultFontsConf} $support_folder/52-default-fonts.conf ln -s ${defaultFontsConf} $latest_folder/52-default-fonts.conf ${optionalString cfg.allowBitmaps '' rm $support_folder/53-no-bitmaps.conf rm $latest_folder/53-no-bitmaps.conf ''} ${optionalString (!cfg.allowType1) '' ln -s ${rejectType1} $support_folder/53-no-type1.conf ln -s ${rejectType1} $latest_folder/53-no-type1.conf ''} ''; hintingConf = pkgs.writeText "fc-10-hinting.conf" '' ${fcBool cfg.hinting.enable} ${fcBool cfg.hinting.autohint} hintslight ''; antialiasConf = pkgs.writeText "fc-10-antialias.conf" '' ${fcBool cfg.antialias} ''; subpixelConf = pkgs.writeText "fc-10-subpixel.conf" '' ${cfg.subpixel.rgba} lcd${cfg.subpixel.lcdfilter} ''; dpiConf = pkgs.writeText "fc-11-dpi.conf" '' ${toString cfg.dpi} ''; defaultFontsConf = let genDefault = fonts: name: optionalString (fonts != []) '' ${name} ${concatStringsSep "" (map (font: '' ${font} '') fonts)} ''; in pkgs.writeText "fc-52-nixos-default-fonts.conf" '' ${genDefault cfg.defaultFonts.sansSerif "sans-serif"} ${genDefault cfg.defaultFonts.serif "serif"} ${genDefault cfg.defaultFonts.monospace "monospace"} ''; rejectType1 = pkgs.writeText "fc-53-no-type1.conf" '' Type 1 ''; in { options = { fonts = { fontconfig = { penultimate = { enable = mkOption { type = types.bool; default = true; description = '' Enable fontconfig-penultimate settings to supplement the NixOS defaults by providing per-font rendering defaults and metric aliases. ''; }; }; }; }; }; config = mkIf (config.fonts.fontconfig.enable && config.fonts.fontconfig.penultimate.enable) { fonts.fontconfig.confPackages = [ penultimateConf ]; }; }