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nixos/modules/platforms/baremetal.nix
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beatzaplenty 96cc63671a
Check NixOS configurations / eval-hosts (pull_request) Successful in 10m40s
Add baremetal-gui flake target with ZFS RAID0, AMD GPU, and sops-backed wifi
Wires everything staged so far into a real flake target:

- modules/platforms/baremetal.nix (new): the bare-metal platform module,
  composed from a real nixos-generate-config run on the actual gui-host
  hardware (AMD CPU, ahci/xhci/usb storage -- modules/hardware-configuration/baremetal.nix).
  Enables hardware.enableRedistributableFirmware (real wifi/GPU/microcode
  firmware VMs never needed), amdgpu as the Xorg video driver plus
  hardware.graphics for Mesa OpenGL/Vulkan, and imports the ZFS RAID0 disko
  layout + modules/services/zfs/enable-service.nix for root-on-ZFS boot
  support.
- flake.nix: new baremetal-gui target, reusing hosts/nixos/host.nix (same
  identity already shared across linode/proxmox/lxc-gui).
- hosts/nixos/host.nix: added networking.hostId, required now that a ZFS
  root pool is in the picture.
- variables.nix: guiRootDisk1/guiRootDisk2 filled in (/dev/sda, /dev/sdb --
  only used transiently at disko-format time, same as modules/disko/proxmox.nix's
  own plain device path). wifiPassword removed.
- modules/networking/wifi.nix: reworked to pull the wifi password from a
  new sops secret (secrets/gui.yaml, wifi-password) instead of a plaintext
  variable -- NetworkManager's ensureProfiles renders `psk = "$WIFI_PASSWORD"`
  literally (nixpkgs' own documented pattern for this) and envsubst-expands
  it from a sops-rendered EnvironmentFile at activation, so the real value
  never touches the Nix store, only /run.
- .sops.yaml: new secrets/gui\.yaml rule, admin + the currently-registered
  lxc-gui recipient (the only gui variant with a provisioned host key so
  far -- whichever variant is actually deployed next still needs
  scripts/secrets/sync-host-keys.sh run for its own recipient).
- README.md/CLAUDE.md: documented the new platform/target and its module
  layout, per this repo's own drift-prevention note.

Verified end-to-end: nix eval of every existing target (nothing broke),
a temporary real nixosSystem build against the actual disko.nixosModules.disko
confirming the generated zpool create has no mirror/raidz keyword (genuine
stripe), and a temporary test SSID confirming the sops secret/template/
ensureProfiles chain renders correctly before reverting to blank/real values.
Full scripts/codex-maintenance.sh (secret-grep, fmt, statix, full-fallback
eval of every host/package) passes clean.
2026-07-22 01:25:29 +00:00

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Nix

{ ... }:
{
imports = [
../hardware-configuration/baremetal.nix
../boot/efi.nix
../disko/baremetal.nix
../services/zfs/enable-service.nix
];
# Needed for real wifi/bluetooth/GPU firmware blobs and CPU microcode
# updates (hardware-configuration/baremetal.nix's amd.updateMicrocode
# keys off this) -- irrelevant on the linode/proxmox/lxc platforms,
# which are all VMs with no real hardware to load firmware for.
hardware.enableRedistributableFirmware = true;
# AMD GPU: the amdgpu kernel driver autoloads from the PCI ID with no
# extra boot.kernelModules entry needed; this is the userspace half --
# the dedicated Xorg driver (not just the generic modesetting fallback)
# plus Mesa OpenGL/Vulkan (amdgpu/RADV), same firmware blobs as above.
# 32-bit support is for compatibility with 32-bit apps/games.
services.xserver.videoDrivers = [ "amdgpu" ];
hardware.graphics = {
enable = true;
enable32Bit = true;
};
}