Update CLAUDE.md

CLAUDE.md

@@ -10,7 +10,7 @@ This is a NixOS configuration repository using flakes, managing multiple machine
 
 ### Flake Structure
 - **flake.nix**: Main entry point defining inputs (nixpkgs, home-manager, plasma-manager, etc.) and outputs for multiple NixOS configurations
-- **Machines**: `nix-book`, `boxy`, `wixos` (WSL configuration)
+- **Machines**: `nix-book`, `boxy`, `wixos` (WSL configuration), `zix790prors`, `live-usb`, `johno-macbookpro` (Darwin/macOS)
 - **Home configurations**: Standalone home-manager configuration for user `johno`
 
 ### Directory Structure
@@ -28,6 +28,12 @@ The repository uses a custom "roles" system where each role is a NixOS module wi
 - `roles.users`: User account management
 - `roles.virtualisation`: Virtualization setup
 - `roles.kodi`: Kodi media center
+- `roles.nvidia`: NVIDIA GPU configuration
+- `roles.printing`: Printing support (CUPS)
+- `roles.spotifyd`: Spotify daemon
+- `roles.btrfs`: Btrfs filesystem configuration
+- `roles.nfs-mounts`: NFS mount configuration
+- `roles.darwin`: macOS-specific configurations
 
 Example role usage in machine configuration:
 ```nix
@@ -60,8 +66,9 @@ The repository also uses a modular home-manager role system for user-space confi
 **Role-Based Home Configurations:**
 - `home-desktop.nix`: Full-featured desktop for development workstations
 - `home-media-center.nix`: Living room media consumption and gaming setup (boxy)
-- `home-laptop-compact.nix`: Essential tools only, excludes office/media for storage constraints (nix-book)  
+- `home-laptop-compact.nix`: Essential tools only, excludes office/media for storage constraints (nix-book)
 - `home-live-usb.nix`: Minimal setup for live environments, no persistent services
+- `home-darwin-work.nix`: macOS work laptop configuration
 
 **Machine-Specific Role Usage:**
 - **nix-book**: Compact laptop → excludes office/media roles due to SSD space constraints
@@ -69,10 +76,13 @@ The repository also uses a modular home-manager role system for user-space confi
 - **zix790prors**: All-purpose workstation → full desktop experience with all roles enabled
 - **wixos**: WSL2 development → full desktop experience, inherits from zix790prors Windows host
 - **live-usb**: Temporary environment → only base + desktop roles, no persistent services
+- **johno-macbookpro**: macOS work laptop → Darwin-specific configuration with development tools
 
 ## Common Commands
 
 ### Building and Switching Configurations
+
+**NixOS (Linux):**
 ```bash
 # Build and switch to a specific machine configuration
 sudo nixos-rebuild switch --flake .#<hostname>
@@ -84,12 +94,22 @@ nixos-rebuild build --flake .#<hostname>
 home-manager switch --flake .#johno
 ```
 
+**Darwin (macOS):**
+```bash
+# Build and switch to Darwin configuration
+darwin-rebuild switch --flake .#johno-macbookpro
+
+# Build without switching
+darwin-rebuild build --flake .#johno-macbookpro
+```
+
 ### Available Machine Configurations
 - `nix-book`: Compact laptop with storage constraints, uses `home/home-laptop-compact.nix`
 - `boxy`: Shared living room media center/gaming desktop with AMD GPU, uses `home/home-media-center.nix`
 - `zix790prors`: Powerful all-purpose workstation (gaming, 3D modeling, development), dual-boots Windows 11 with shared btrfs /games partition, uses `home/home-desktop.nix`
 - `wixos`: WSL2 development environment running in Windows partition of zix790prors, uses `home/home-desktop.nix`
 - `live-usb`: Bootable ISO configuration, uses `home/home-live-usb.nix`
+- `johno-macbookpro`: macOS work laptop, uses `home/home-darwin-work.nix`
 
 ### Flake Operations
 ```bash
@@ -110,14 +130,28 @@ sudo ./bootstrap.sh <hostname>
 ```
 This script pulls from the remote git repository and applies the configuration.
 
+### Build Live USB ISO
+Use the provided script to build a bootable ISO:
+```bash
+./build-liveusb.sh
+```
+Creates an ISO suitable for Ventoy and other USB boot tools in `./result/iso/`.
+
 ## Development Workflow
 
 ### Adding New Machines
+
+**NixOS:**
 1. Create new directory in `machines/<hostname>/`
 2. Add `configuration.nix` with role assignments
 3. Include hardware-configuration.nix (generated by nixos-generate-config)
 4. Add nixosConfiguration to flake.nix outputs
 
+**Darwin (macOS):**
+1. Create new directory in `machines/<hostname>/`
+2. Add `configuration.nix` with Darwin role assignments
+3. Add darwinConfiguration to flake.nix outputs
+
 ### Adding New Roles
 1. Create directory in `roles/<role-name>/`
 2. Create `default.nix` with module definition using mkEnableOption