1 files changed, 105 insertions, 0 deletions
diff --git a/home-manager/modules/misc/fontconfig.nix b/home-manager/modules/misc/fontconfig.nix
new file mode 100644
index 00000000000..795ab3a74f6
--- /dev/null
+++ b/home-manager/modules/misc/fontconfig.nix
@@ -0,0 +1,105 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.fonts.fontconfig;
+
+  profileDirectory = config.home.profileDirectory;
+
+in {
+  meta.maintainers = [ maintainers.rycee ];
+
+  imports = [
+    (mkRenamedOptionModule [ "fonts" "fontconfig" "enableProfileFonts" ] [
+      "fonts"
+      "fontconfig"
+      "enable"
+    ])
+  ];
+
+  options = {
+    fonts.fontconfig = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to enable fontconfig configuration. This will, for
+          example, allow fontconfig to discover fonts and
+          configurations installed through
+          <varname>home.packages</varname> and
+          <command>nix-env</command>.
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # Create two dummy files in /lib/fontconfig to make sure that
+    # buildEnv creates a real directory path. These files are removed
+    # in home.extraProfileCommands below so the packages will not
+    # become "runtime" dependencies.
+    home.packages = [
+      (pkgs.writeTextFile {
+        name = "hm-dummy1";
+        destination = "/lib/fontconfig/hm-dummy1";
+        text = "dummy";
+      })
+
+      (pkgs.writeTextFile {
+        name = "hm-dummy2";
+        destination = "/lib/fontconfig/hm-dummy2";
+        text = "dummy";
+      })
+    ];
+
+    home.extraProfileCommands = ''
+      if [[ -d $out/lib/X11/fonts || -d $out/share/fonts ]]; then
+        export FONTCONFIG_FILE="$(pwd)/fonts.conf"
+
+        cat > $FONTCONFIG_FILE << EOF
+      <?xml version='1.0'?>
+      <!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
+      <fontconfig>
+        <dir>$out/lib/X11/fonts</dir>
+        <dir>$out/share/fonts</dir>
+        <cachedir>$out/lib/fontconfig/cache</cachedir>
+      </fontconfig>
+      EOF
+
+        ${getBin pkgs.fontconfig}/bin/fc-cache -f
+        rm -f $out/lib/fontconfig/cache/CACHEDIR.TAG
+        rmdir --ignore-fail-on-non-empty -p $out/lib/fontconfig/cache
+
+        rm "$FONTCONFIG_FILE"
+        unset FONTCONFIG_FILE
+      fi
+
+      # Remove hacky dummy files.
+      rm $out/lib/fontconfig/hm-dummy?
+      rmdir --ignore-fail-on-non-empty -p $out/lib/fontconfig
+    '';
+
+    xdg.configFile = {
+      "fontconfig/conf.d/10-hm-fonts.conf".text = ''
+        <?xml version='1.0'?>
+
+        <!-- Generated by Home Manager. -->
+
+        <!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
+        <fontconfig>
+          <include ignore_missing="yes">${config.home.path}/etc/fonts/conf.d</include>
+          <include ignore_missing="yes">${config.home.path}/etc/fonts/fonts.conf</include>
+
+          <dir>${config.home.path}/lib/X11/fonts</dir>
+          <dir>${config.home.path}/share/fonts</dir>
+          <dir>${profileDirectory}/lib/X11/fonts</dir>
+          <dir>${profileDirectory}/share/fonts</dir>
+
+          <cachedir>${config.home.path}/lib/fontconfig/cache</cachedir>
+        </fontconfig>
+      '';
+    };
+  };
+}