Emma Thorpe
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The stock GPU has been replaced with a Quadro P400 (Pascal, GP108). Add hosts/MacPro31/nvidia.nix: - Driver branch 580 (nvidiaPackages.legacy_580), not the nixpkgs default production branch (595.x). 580 is the last branch supporting Maxwell/Pascal/Volta and is an LTS branch until Aug 2028; a newer one does not drive this card. - modesetting.enable for Wayland (nvidia-drm.modeset=1), open = false (the open kernel modules need Turing or later), and sway --unsupported-gpu, which wlroots requires with the proprietary driver. - Docker with GPU access via CDI (hardware.nvidia-container-toolkit), rather than the deprecated virtualisation.docker.enableNvidia runtime wrapper. Containers run with --device=nvidia.com/gpu=all and must ship a CUDA 12.x or older runtime: CUDA 13 dropped sm_61. The driver packages are unfree, so allowlist them in unfreePackages; they are not cached and the kernel module builds on the host. Also declare features.cpu.microarchLevel = 1 for this machine: the Harpertown Xeons have SSE4.1 but no SSE4.2/POPCNT, which switches off Claude Code through the fleet-wide gate.
49 lines
2.0 KiB
Nix
49 lines
2.0 KiB
Nix
# Apple Mac Pro 3,1 (Early 2008, dual Xeon Harpertown, x86_64). Desktop host:
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# shared graphical/wired options live in ../../modules/desktop.nix; only
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# host-specific settings are here. Install notes (EFI booting, GPU, partitions):
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# see ./README.md.
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{ ... }:
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{
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imports = [
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./hardware-configuration.nix
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./nvidia.nix
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];
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# Dual quad-core Xeon (Harpertown/Penryn): SSE4.1 but no SSE4.2 or POPCNT,
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# i.e. x86-64-v1. Declaring it here switches off the fleet flags that need a
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# newer CPU -- currently features.claudeCode (see ../../modules/features.nix).
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features.cpu.microarchLevel = 1;
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# The Mac Pro 3,1 has 64-bit EFI (confirmed by the owner), so boot via
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# systemd-boot like the MBP -- no GRUB/BIOS shim needed.
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boot.loader.systemd-boot.enable = true;
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# Apple's EFI does not reliably support efibootmgr NVRAM writes; leave the
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# firmware vars untouched.
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boot.loader.efi.canTouchEfiVariables = false;
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# Apple-EFI quirk: if the Mac does not pick up the bootloader at the boot
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# picker, install it to the fallback path \EFI\BOOT\BOOTX64.EFI and/or
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# "bless" the ESP from macOS. Uncomment to write the removable fallback path:
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# boot.loader.efi.efiInstallAsRemovable = true;
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networking.hostName = "MacPro31-NixOS";
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# Elderly host: a compressed RAM swap softens memory pressure (earlyoom in
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# workstation.nix is the backstop).
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zramSwap.enable = true;
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# sshd (daemon, port 22, key-only policy) comes from ../../modules/ssh.nix;
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# the firewall itself is enabled in workstation.nix with a default-deny policy.
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# Dual Harpertown Xeon microcode. Redistributable firmware (GPU/NIC blobs) is
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# enabled in workstation.nix.
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hardware.cpu.intel.updateMicrocode = true;
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# GPU: the stock card (ATI Radeon HD 2600 XT / NVIDIA GeForce 8800 GT) has
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# been replaced with an NVIDIA Quadro P400. Driver, Wayland quirks and
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# GPU-enabled Docker live in ./nvidia.nix.
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# See `man configuration.nix` / the stateVersion docs before changing.
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system.stateVersion = "26.05";
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}
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