# MacBook Pro — NixOS / Asahi Linux (macbook-pro-nixos)

`systems/aarch64-linux/macbook-pro-nixos/`

## Hardware

- **Device**: Apple Silicon MacBook Pro (M-series)
- **OS**: NixOS via [Asahi Linux](https://asahilinux.org/) (`nixos-apple-silicon`)
- **Boot**: Asahi boot chain (not traditional EFI)

## Key Features

- Asahi Linux kernel with full Apple Silicon support (sound, GPU, etc.)
- GNOME as the primary desktop; Hyprland available but disabled
- x86_64 emulation via binfmt (enables running x86 binaries)
- Waydroid and libvirtd available (Waydroid disabled by default)
- Battery management — charge threshold set via `macsmc-battery`
- Omnissa Horizon client (custom package) for remote desktop
- Distrobox for containerised Linux environments
- iwd as the Wi-Fi backend

## x86_64 Emulation

```nix
nix.settings.extra-platforms = [ "x86_64-linux" ];
boot.binfmt.emulatedSystems   = [ "x86_64-linux" ];
```

This allows building and running x86_64 packages on the ARM host.

## Asahi Hardware

The Asahi hardware module provides:
- Firmware loading from `./firmware/`
- Sound setup (`setupAsahiSound = true`)
- Apple-specific kernel patches and device drivers

Useful packages installed:
`asahi-bless`, `asahi-btsync`, `asahi-nvram`, `asahi-wifisync`, `apfs-fuse`, `apfsprogs`, `muvm`, `fex`

## Network

- **Hostname**: macbook-pro-nixos
- **Wi-Fi backend**: iwd (via NetworkManager)
- Firewall: extra rules for multicast (ports 1990, 2021)

## Battery Management

```nix
mjallen.hardware.battery = {
  enable = true;
  chargeLimitPath = "/sys/class/power_supply/macsmc-battery/charge_control_end_threshold";
};
```

## Configuration Files

| File | Purpose |
|---|---|
| `default.nix` | Main config — Asahi hardware, users, network |
| `boot.nix` | Asahi boot configuration |
| `filesystems.nix` | Disk layout |
| `hardware-configuration.nix` | Generated hardware config |
| `services.nix` | logind, GDM, GNOME, Flatpak, power settings |
| `firmware/` | Asahi firmware blobs |

## Secrets

Secrets are in `secrets/mac-secrets.yaml`, encrypted for: `matt`, `matt_pi5`, `desktop`, `pi5`, `admin`, `jallen-nas`, `matt_macbook-pro`, `macbook-pro`.