update system

modules/nixos/fonts/open-dyslexic.nix

@@ -0,0 +1,40 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+with lib;
+
+let
+  cfg = config.fonts.open-dyslexic;
+in
+{
+  options.fonts.open-dyslexic = {
+    enable = mkEnableOption "Enable the OpenDyslexic font";
+    default = mkOption {
+      type = types.bool;
+      description = "Make Noto Sans the default sans-serif font";
+      default = false;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fonts = {
+      packages =
+        with pkgs;
+        [
+          open-dyslexic
+        ]
+        ++ (if (config.fonts.nerd-fonts.enable) then [ nerd-fonts.open-dyslexic ] else [ ]);
+      fontconfig.defaultFonts = {
+        sansSerif = mkIf cfg.default [
+          (if (config.fonts.nerd-fonts.enable) then "OpenDyslexic Nerd Font" else "OpenDyslexic")
+        ];
+        monospace = mkIf cfg.default [
+          (if (config.fonts.nerd-fonts.enable) then "OpenDyslexicM Nerd Font" else "OpenDyslexicM")
+        ];
+      };
+    };
+  };
+}