More progress

modules/fontconfig/default.nix

@@ -0,0 +1,21 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.modules.fontconfig;
+in {
+  options.modules.fontconfig = {
+    enable = mkEnableOption "fontconfig";
+  };
+
+  config = {
+    fonts.fontconfig.enable = cfg.enable;
+    fonts.enableDefaultPackages = false;
+    fonts.fontconfig.defaultFonts = {
+        serif = mkDefault [];
+        sansSerif = mkDefault [];
+        monospace = mkDefault [];
+        emoji = mkDefault [];
+    };
+  };
+}