Update nix-shell to use same versions as netlify:

Fix nav by copying from:
https://github.com/squidfunk/mkdocs-material/blob/master/src/templates/partials/nav.html
The latest version of the Material theme seems
to have broken our override. Netlify appears to have
installed a newer version.

Signed-off-by: Jacob Weinstock <jakobweinstock@gmail.com>

docs/index.md

@@ -49,7 +49,6 @@ Need a little help getting started? We're here!
   Look for the [#tinkerbell] channel.
 - Submit an issue on [Github].
 
-
 [boots]: services/boots.md
 [pbnj]: services/pbnj.md
 [hook]: hook.md

mkdocs.yml

@@ -1,7 +1,7 @@
 site_name: Tinkerbell Docs
 site_url: https://docs.tinkerbell.org
 site_description: Designed for scalable provisioning of physical hardware, Tinkerbell is both open-source and cloud native. Contributed by Equinix Metal.
-# site_image: https://tinkerbell.org/images/social/tinkerbell-social-image.png
+site_image: https://tinkerbell.org/images/social/tinkerbell-social-image.png
 repo_url: https://github.com/tinkerbell/tinkerbell-docs
 edit_uri: "edit/main/docs/"
 

overrides/partials/nav.html

@@ -20,8 +20,11 @@
   <div class="md-nav__source">{% include "partials/source.html" %}</div>
   {% endif %}
   <!-- Render item list -->
+  {% import "partials/nav-item.html" as item with context %}
   <ul class="md-nav__list" data-md-scrollfix>
-    {% for nav_item in nav %} {% set path = "nav-" + loop.index | string %} {%
-    set level = 1 %} {% include "partials/nav-item.html" %} {% endfor %}
+    {% for nav_item in nav %}
+      {% set path = "__nav_" ~ loop.index %}
+      {{ item.render(nav_item, path, 1) }}
+    {% endfor %}
   </ul>
 </nav>

shell.nix

@@ -2,11 +2,13 @@ let _pkgs = import <nixpkgs> { };
 in { pkgs ? import (_pkgs.fetchFromGitHub {
   owner = "NixOS";
   repo = "nixpkgs";
-  #branch@date: 21.11@2021-12-02
-  rev = "21.11";
-  sha256 = "sha256-AjhmbT4UBlJWqxY0ea8a6GU2C2HdKUREkG43oRr3TZg=";
+  #branch@date: 23.11@2023-11-29
+  rev = "23.11";
+  sha256 = "1ndiv385w1qyb3b18vw13991fzb9wg4cl21wglk89grsfsnra41k";
 }) { } }:
 
 with pkgs;
 
-mkShell { buildInputs = [ nodePackages.prettier python3Packages.poetry ]; }
+mkShell {
+  buildInputs = [ nodePackages.prettier pkgs.poetry pkgs.python38];
+}