add doc option

modules/default.nix

@@ -7,6 +7,7 @@
     ./auto-update
     ./bluetooth
     ./boot
+    ./doc
     ./events
     ./kodi
     ./keyboard

modules/doc/default.nix

@@ -0,0 +1,29 @@
+{ config, lib, pkgs, self, ... }:
+
+let cfg = config.jopejoe1.doc;
+in {
+  options.jopejoe1.doc = { enable = lib.mkEnableOption "Enable Documentation"; };
+
+  config = lib.mkIf cfg.enable {
+    documentation = {
+      enable = true;
+      doc.enable = true;
+      dev.enable = true;
+      info.enable = true;
+      nixos = {
+        enable = true;
+        includeAllModules = true;
+        options.warningsAreErrors = false;
+      };
+      man = {
+        enable = true;
+        generateCaches = true;
+      };
+    };
+    environment.systemPackages = with pkgs; [
+      man-pages
+      man-pages-posix
+      linux-manual
+    ];
+  };
+}