Add a11ywatch and related configurations for Podman and Nginx

- Introduced a new module for a11ywatch with Podman support, creating a bridge network and defining backend and frontend containers.
- Configured Nginx to serve the a11ywatch application with SSL and ACME support.
- Added user and group configurations for a11ywatch.
- Created a systemd service to ensure the Podman network exists on boot.

Implement Firefox Container Controller extension and host

- Added a module for the Firefox Container Controller extension, allowing installation via Nix.
- Created a native messaging host for the extension to communicate with the container controller.
- Included CLI helpers to enqueue commands for showing and hiding containers.

Enable fingerprint authentication in PAM

- Configured fingerprint authentication for login, sudo, and swaylock services.

Setup Raspberry Pi OS image creation script

- Developed a script to create a read-only Raspberry Pi OS Lite image with Snapcast client.
- Included configuration for Wi-Fi, hostname, and Snapcast server.
- Implemented user and group setup for Snapcast client and ensured necessary services are enabled.

Document Raspberry Pi Zero W setup instructions

- Added detailed instructions for configuring Raspberry Pi OS on Zero W, including disabling unused services and setting up Snapcast client.

Create test configuration script for NixOS

- Implemented a script to perform dry-builds for NixOS configurations, allowing for easy validation of host configurations.

hosts/nb/modules/development/mcp.nix

@@ -1,11 +1,13 @@
 
 { config, pkgs, lib, ... }:
 let
+  pkgs = import (builtins.fetchTarball "https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-unstable.tar.gz") { };
+  mcp-servers = import (builtins.fetchTarball "https://github.com/natsukium/mcp-servers-nix/archive/refs/heads/main.tar.gz") { inherit pkgs; };
 in {
-  nixpkgs.overlays = [
-    (import (builtins.fetchTarball "https://github.com/natsukium/mcp-servers-nix/archive/main.tar.gz")).overlays.default
-  ];
-  environment.systemPackages = with pkgs; [
-    mcp-server-fetch
-  ];
+  mcp-servers.lib.mkConfig pkgs {
+    programs = {
+      fetch.enable = true;
+      memory.enable = true;
+    };
+  };
 }