# Mac Pro 3,1 (Early 2008) — install notes

Flake host: `lyrathorpe-macpro31`. Desktop (`portable = false`, imports
`../../modules/desktop.nix`). Files: `configuration.nix`,
`hardware-configuration.nix`.

## Hardware configuration

`hardware-configuration.nix` here is the real config generated by
`nixos-generate-config` on the machine. Root is an **LVM** logical volume
(`/dev/mapper/MacPro-Root`, ext4); the ESP (vfat) and swap are referenced by
UUID. The initrd carries `dm-snapshot` for the LVM root. Regenerate and commit
if the disk layout changes.

## Bootloader

The Mac Pro 3,1 has **64-bit EFI**, so it uses **systemd-boot** (no GRUB/CSM
shim). `canTouchEfiVariables = false` because Apple's firmware does not reliably
accept `efibootmgr` NVRAM writes.

Apple-EFI quirk: if the firmware boot picker does not show NixOS after install,
either

- uncomment `boot.loader.efi.efiInstallAsRemovable = true;` in
  `configuration.nix` (installs the fallback `\EFI\BOOT\BOOTX64.EFI`), and/or
- "bless" the ESP from macOS.

Partition the disk GPT with an ESP (vfat).

## Graphics

The stock card varies between units — **ATI Radeon HD 2600 XT** or **NVIDIA
GeForce 8800 GT**. No proprietary driver is hardcoded; Sway relies on in-tree KMS:

- ATI Radeon HD 2600 XT → `radeon` (or `amdgpu`) KMS
- NVIDIA GeForce 8800 GT → `nouveau` KMS

These come up automatically. If a card needs forcing, set
`services.xserver.videoDrivers` and/or add the module to
`boot.initrd.kernelModules` for early KMS (see the comment in
`configuration.nix`).

## Networking

Wired Ethernet via NetworkManager (from `desktop.nix`) — the Mac Pro has two
gigabit ports.

## Login

Graphical login via a Wayland greeter — `greetd` running ReGreet inside the
`cage` kiosk compositor — configured centrally in `lyrathorpe/swaywm.nix` for
every Sway host (gated on `features.swayDesktop.enable`). The greeter is forced
to the Dvorak layout to match the console and Sway session. Set the user
password (`passwd lyrathorpe`) after install, or the greeter cannot
authenticate. Requires working KMS (radeon/nouveau — see Graphics).

## Apply

```sh
sudo nixos-rebuild switch --flake .#lyrathorpe-macpro31
```