Prompt for a host-key path interactively as a third fallback

If neither /etc/host-keys nor /root/host-keys has the target's SSH
host key, auto-install.sh previously went straight to "continue
without one anyway?". Added a third option in between, gated on
[[ -t 0 ]] (only offered when there's an actual operator at stdin, never
in an unattended/non-interactive run): prompt for an arbitrary
directory (USB stick, other mount, etc.), and if the key pair is
there, copy it into /root/host-keys and install it to /mnt same as the
existing pre-seeded-key path. Falls through to the original
warning+confirm if the prompt is skipped, the path doesn't have the
key, or the run isn't interactive at all.

docs/auto-installer.md updated to mention the new fallback. Quick
bash -n + shellcheck pass only, per request.

.sops.yaml

@@ -12,6 +12,7 @@ keys:
   - &lxc-gui age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
   - &proxmox-server age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
   - &vm-server age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
+  - &baremetal-gui age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
 
 creation_rules:
   # Shared across every currently-deployed host: root/nixos password hash,
@@ -34,6 +35,7 @@ creation_rules:
           - *lxc-gui
           - *proxmox-server
           - *vm-server
+          - *baremetal-gui
 
   - path_regex: secrets/nix-cache\.yaml$
     key_groups:
@@ -55,3 +57,16 @@ creation_rules:
       - age:
           - *admin
           - *docker
+
+  # gui-host-specific secrets (currently: wifi-password, see
+  # modules/networking/wifi.nix). Only *lxc-gui has a registered key today
+  # -- proxmox-gui/linode-gui/baremetal-gui haven't been provisioned via
+  # scripts/secrets/sync-host-keys.sh yet, so whichever variant is actually
+  # deployed next needs its recipient added here (and `sops updatekeys` rerun)
+  # before it can decrypt this.
+  - path_regex: secrets/gui\.yaml$
+    key_groups:
+      - age:
+          - *admin
+          - *lxc-gui
+          - *baremetal-gui

CLAUDE.md

@@ -164,13 +164,39 @@ before committing.
 
 Beyond `codex-setup.sh`/`codex-maintenance.sh` above, `scripts/` is
 organized by purpose: `scripts/secrets/` (sops/age + SSH host-key
-management), `scripts/proxmox/` (Proxmox deployment), `scripts/lib/`
+management), `scripts/proxmox/` (Proxmox deployment), `scripts/installer/`
-(shared helpers, sourced by the scripts below — not run directly), and a
+(the auto-installer's own shell script, templated into the image — see
-handful of repo-wide scripts left at the top level (`env.sh`,
+below), `scripts/lib/` (shared helpers, sourced by the scripts below — not
-`bump-nixpkgs-release.sh`, plus `codex-setup.sh`/`codex-maintenance.sh`
+run directly), and a handful of repo-wide scripts left at the top level
-above). When adding a new script, put it in the matching subfolder rather
+(`env.sh`, `bump-nixpkgs-release.sh`, plus `codex-setup.sh`/
-than the top level, and if it duplicates logic another script already has,
+`codex-maintenance.sh` above). When adding a new script, put it in the
-lift the shared part into `scripts/lib/` instead of copying it.
+matching subfolder rather than the top level, and if it duplicates logic
+another script already has, lift the shared part into `scripts/lib/`
+instead of copying it.
+
+### `scripts/installer/`
+
+- `scripts/installer/auto-install.sh` — the interactive install script
+  baked into the auto-installer image (see `docs/auto-installer.md`), kept
+  as a real, version-controlled shell file rather than inline in
+  `modules/installer/common.nix`'s Nix. It sources `scripts/env.sh` itself
+  for `LAN_DOMAIN` (`export LAN_DOMAIN`/`: "${LAN_DOMAIN:=...}"`, matching
+  `variables.nix`'s `lanDomain` — manually kept in sync, same pattern as
+  `NIX_CACHE_HOST` mirroring `nixCacheHost`), rather than Nix-level string
+  substitution — that's what makes it work identically whether run
+  straight from a git checkout or from inside the built installer image.
+  `common.nix` bakes `scripts/env.sh` in alongside it at a matching
+  relative path (`/etc/nixos-installer/env.sh` next to
+  `/etc/nixos-installer/installer/auto-install.sh`) so the script's own
+  `source "$(dirname ...)/../env.sh"` line resolves the same way in both
+  contexts — this is also why it's invoked from
+  `/etc/nixos-installer/installer/auto-install.sh` rather than a flat
+  `/etc/auto-install.sh`. `#!/usr/bin/env bash`, not
+  `#!/run/current-system/sw/bin/bash`: the latter only resolves on an
+  already-activated NixOS system, breaking the checked-out-file case
+  entirely (confirmed live: "cannot execute: required file not found" on
+  a non-NixOS box); `/usr/bin/env` is reliably present on both NixOS
+  (`environment.usrbinenv`'s own default) and any normal Linux distro.
 
 ### `scripts/secrets/`
 
@@ -282,8 +308,9 @@ Sourced by the scripts above, never run directly:
 ### Top level
 
 - `scripts/env.sh` — shared config (`PROXMOX_HOST`, storage pool, bridge,
-  default cores/memory) sourced by `create-proxmox-resource.sh`. Add new
+  default cores/memory, `NIX_CACHE_HOST`, `LAN_DOMAIN`) sourced by
-  cross-script config here instead of duplicating it per-script.
+  `create-proxmox-resource.sh` and `scripts/installer/auto-install.sh`. Add
+  new cross-script config here instead of duplicating it per-script.
 - `scripts/bump-nixpkgs-release.sh` — bumps `flake.nix`'s `nixpkgs.url`/
   `home-manager.url` in place. Exists because flake input URLs can't
   reference `variables.nix` (confirmed empirically — `nix flake metadata`
@@ -321,11 +348,14 @@ nixosSystem {
 }
 ```
 
-Platforms: `linode`, `proxmox`, `lxc`. Build types: `minimal`, `nix-cache`,
+Platforms: `linode`, `proxmox`, `lxc`, `baremetal`. Build types: `minimal`,
-`server`, `docker`, `gui`, `pxe-boot`, `tailscale-exit-node`, `tor-relay`. Not
+`nix-cache`, `server`, `docker`, `gui`, `pxe-boot`, `tailscale-exit-node`,
-every combination is built — e.g. `pxe-boot` has no `linode` variant
+`tor-relay`. Not every combination is built — e.g. `pxe-boot` has no `linode`
-(PXE/DHCP/TFTP need LAN L2 adjacency a Linode VPS doesn't have), and
+variant (PXE/DHCP/TFTP need LAN L2 adjacency a Linode VPS doesn't have),
-`tor-relay` currently only exists as `lxc-tor-relay`. Treat `flake.nix`'s
+`tor-relay` currently only exists as `lxc-tor-relay`, and `baremetal`
+currently only exists as `baremetal-gui` (the real gui-host hardware —
+see `hosts/nixos/host.nix` and `modules/platforms/baremetal.nix`). Treat
+`flake.nix`'s
 `generatedTargets` as the source
 of truth for which hosts exist — `README.md`, `AGENTS.md`,
 `docs/flake-lock-automation.md`, and the CI eval workflows
@@ -341,12 +371,16 @@ removing a host.
   of their own beyond narrow parameterized helpers (see
   `modules/beszel/host-token.nix` below) — all shared behavior comes from the
   platform/build-type modules composed in `flake.nix`, not from the host file.
-- `modules/platforms/{linode,proxmox,lxc}.nix` — platform-specific config:
+- `modules/platforms/{linode,proxmox,lxc,baremetal}.nix` — platform-specific
-  boot method, guest tooling, and (for linode/proxmox) the hypervisor-specific
+  config: boot method, guest tooling, and the hardware config, imported
-  hardware config, imported directly by the platform module itself
+  directly by the platform module itself — **not** wired in from
-  (`../hardware-configuration/vm/{proxmox,linode}.nix`) — **not** wired in
+  `flake.nix`. VM platforms use `../hardware-configuration/vm/{proxmox,linode}.nix`;
-  from `flake.nix`. `lxc.nix` has no hardware-configuration counterpart since
+  `baremetal.nix` uses `../hardware-configuration/baremetal.nix` (adapted
-  containers share the host kernel; instead it imports nixpkgs' own
+  from a real `nixos-generate-config` run on the actual hardware, not a
+  vm/ file, since it isn't a VM) plus `hardware.enableRedistributableFirmware
+  = true` for real wifi/GPU/microcode firmware that VMs never needed.
+  `lxc.nix` has no hardware-configuration counterpart since containers
+  share the host kernel; instead it imports nixpkgs' own
   `virtualisation/proxmox-lxc.nix`, which gives every `lxc-*` host a
   `config.system.build.tarball` output — a plain rootfs tarball, used as a
   `pct create ... vztmpl` CT template (**not** `pct restore`, which expects
@@ -370,6 +404,16 @@ removing a host.
   boots, so this declares them with `destroy = false` (disko never wipes
   them) and a bare `filesystem`/`swap` content type instead of a partition
   table — idempotent against an already-provisioned disk, never destructive.
+- `modules/disko/baremetal.nix` — `baremetal-gui`'s disko config: a ZFS
+  RAID0 (striped, no redundancy — disko's zpool `mode` defaults to `""`,
+  which is a plain stripe rather than `"mirror"`/`"raidz"`) root pool
+  across two disks, ESP + systemd-boot on the first. Device paths
+  (`vars.guiRootDisk1`/`guiRootDisk2`) are placeholders — fill in stable
+  `/dev/disk/by-id/...` paths before running disko for real.
+  `modules/platforms/baremetal.nix` also imports
+  `modules/services/zfs/enable-service.nix` for this (the `zfs_unstable`
+  package, autoScrub/autoSnapshot/trim) — the only other importer today is
+  `server`'s NFS data pool, an unrelated non-root ZFS use.
 - `modules/boot/efi.nix` — systemd-boot + EFI vars, paired with the disko module.
 - `modules/installer/` — the auto-installer environment (ISO, also served as
   PXE netboot): `common.nix` (shared config + the generated

README.md

@@ -8,13 +8,15 @@ workstation.
 Targets are named `<platform>-<buildtype>`, generated from two orthogonal
 pieces composed in `flake.nix`:
 
-- **Platforms** (what it runs on): `linode`, `proxmox`, `lxc`
+- **Platforms** (what it runs on): `linode`, `proxmox`, `lxc`, `baremetal`
 - **Build types** (what it's for): `minimal`, `nix-cache`, `server`, `docker`,
   `gui`, `pxe-boot`, `tailscale-exit-node`, `tor-relay`
 
 Not every combination exists — `pxe-boot` has no `linode` variant, since
-PXE/DHCP/TFTP need LAN L2 adjacency that a Linode VPS doesn't have, and
+PXE/DHCP/TFTP need LAN L2 adjacency that a Linode VPS doesn't have,
-`tor-relay` currently only exists as `lxc-tor-relay`. The full list:
+`tor-relay` currently only exists as `lxc-tor-relay`, and `baremetal`
+currently only exists as `baremetal-gui` (the real gui-host hardware). The
+full list:
 
 | Target | Purpose |
 | --- | --- |
@@ -25,6 +27,7 @@ PXE/DHCP/TFTP need LAN L2 adjacency that a Linode VPS doesn't have, and
 | `linode-server` / `proxmox-server` / `lxc-server` | Storage, NFS, backup, and monitoring exporter host — previously the flat `server` target |
 | `linode-docker` / `proxmox-docker` / `lxc-docker` | Docker host for the main container stack — previously the flat `docker` target |
 | `linode-gui` / `proxmox-gui` / `lxc-gui` | Cinnamon desktop workstation — previously the flat `nixos` target |
+| `baremetal-gui` | Same Cinnamon desktop workstation, on the real gui-host hardware — ZFS RAID0 root, systemd-boot |
 | `proxmox-pxe-boot` / `lxc-pxe-boot` | HTTP/iPXE boot asset host — previously the flat `pxe-boot` target |
 | `linode-tailscale-exit-node` / `proxmox-tailscale-exit-node` / `lxc-tailscale-exit-node` | Tailscale exit node |
 | `lxc-tor-relay` | Tor middle relay |
@@ -64,7 +67,7 @@ nix eval --json .#nixosConfigurations --apply builtins.attrNames | jq -r '.[]'
 | `variables.nix` | Single source of truth for shared values (LAN domain/CIDR, hostnames, timezone, primary username, storage root, NFS share subpaths/mountpoints, service ports, ...) — passed to every module and Home Manager config as the `vars` argument via `specialArgs`/`extraSpecialArgs` |
 | `hosts/<name>/host.nix` | Per-machine identity: hostname, hostId, per-machine secrets, `system.stateVersion` |
 | `hosts/nixos/home.nix` | Workstation-specific Home Manager config (used by the `gui` build type) |
-| `modules/platforms/` | Platform-specific config: virtualisation guest tools, boot method, hardware config (`linode.nix`, `proxmox.nix`, `lxc.nix`) |
+| `modules/platforms/` | Platform-specific config: virtualisation guest tools, boot method, hardware config (`linode.nix`, `proxmox.nix`, `lxc.nix`, `baremetal.nix`) |
 | `modules/build-types/` | Build-type-specific config: what makes a system minimal/server/docker/gui/pxe-boot/nix-cache |
 | `modules/common/` | Shared NixOS config, Home Manager, aliases imported by every host |
 | `modules/nix-cache/` | Binary cache and remote builder client/server modules |

docs/auto-installer.md

@@ -8,10 +8,13 @@ lives here.
 The installer provides a small NixOS install environment (ISO, or the same
 image netbooted via PXE) with SSH access, Git support, and an interactive
 installation script.
-Logging in as any user (root or `nixos`) runs `/etc/auto-install.sh`,
+Logging in as any user (root or `nixos`) runs
-discovers available hosts from this same flake, lets the operator choose a
+`/etc/nixos-installer/installer/auto-install.sh` (the same file as
-target, applies that host's Disko storage configuration, installs NixOS, and
+`scripts/installer/auto-install.sh` in this repo — see "Installer process"
-reboots.
+below for why it's baked in at that path rather than a flat
+`/etc/auto-install.sh`), discovers available hosts from this same flake,
+lets the operator choose a target, applies that host's Disko storage
+configuration, installs NixOS, and reboots.
 
 **This applies to every `nixosConfigurations` target except `lxc-*` hosts —
 see "LXC hosts" immediately below for why those are different.**
@@ -192,6 +195,10 @@ default.
 `auto-install.sh` still supports the older manual path as a fallback: if a
 host's key isn't baked in (`/etc/host-keys`), it checks `/root/host-keys`
 next, where you can `scp` a key in after boot, same as before this migration.
+If neither has it and the script is running interactively (an actual
+operator at the other end of stdin, not an unattended run), it prompts for
+an arbitrary directory to check (a mounted USB stick, another filesystem,
+etc.) and copies the key pair into `/root/host-keys` from there if found.
 
 ## Storage
 
@@ -217,7 +224,21 @@ entirely (see "LXC hosts" above), so it never reaches this code path.
 
 ## Installer process
 
-`/etc/auto-install.sh`:
+`scripts/installer/auto-install.sh` is a real, version-controlled shell
+script — not an inline Nix string. It sources `scripts/env.sh` for
+`LAN_DOMAIN` itself (same as every other script in `scripts/`), so it
+behaves identically whether it's run straight from a git checkout (e.g.
+manually, from a stock NixOS ISO that isn't this repo's own installer
+image) or from inside the built installer image. That's also why it's
+baked in at `/etc/nixos-installer/installer/auto-install.sh` rather than a
+flat `/etc/auto-install.sh` — `modules/installer/common.nix` bakes
+`scripts/env.sh` in alongside it at `/etc/nixos-installer/env.sh`,
+preserving the same relative layout (`installer/auto-install.sh` ->
+`../env.sh`) the checked-out repo has, so the script's own
+`source ".../env.sh"` line resolves correctly in both places without any
+Nix-level templating.
+
+Once running, it:
 
 1. Queries `nixosConfigurations` from this flake over the network (`git+https://<lanDomain>/beatzaplenty/nixos.git`) — this happens at *install* time, not build time, so a generic installer image always sees whatever hosts are currently committed, without needing a rebuild.
 2. Presents them as a menu; confirms the choice.

flake.lock

@@ -95,11 +95,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1783740085,
+        "lastModified": 1784350909,
-        "narHash": "sha256-qajyHfZY29G2oEQk+uHxmsJcRoBUBXP9maTpFlwP/dI=",
+        "narHash": "sha256-ZWyzLbS1yKUTeFJLmdVuWNnHttL333/ldJbEE+KzCrM=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "3cd22efe6471dc7365c822bd9ad73a21e55f38fb",
+        "rev": "4ce190229c73d44536caa7072f6308fb2d8feeb3",
         "type": "github"
       },
       "original": {
@@ -147,11 +147,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1784011430,
+        "lastModified": 1784432872,
-        "narHash": "sha256-lDebytrYdd47IBLwvNOD+6AGeoqZ78CIKlp70hzW280=",
+        "narHash": "sha256-n3gKTBIV4ZA5VQpUakffBe3KGu4+mhPoA34rrqS0GkA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8eeec934ae0dbeca3d7868c059568a65c08b2fc3",
+        "rev": "fd1462031fdee08f65fd0b4c6b64e22239a77870",
         "type": "github"
       },
       "original": {

flake.nix

@@ -91,6 +91,7 @@
         linode-gui = mkTarget { platform = "linode"; buildType = "gui"; hostPath = ./hosts/nixos/host.nix; homeFile = ./hosts/nixos/home.nix; };
         proxmox-gui = mkTarget { platform = "proxmox"; buildType = "gui"; hostPath = ./hosts/nixos/host.nix; homeFile = ./hosts/nixos/home.nix; };
         lxc-gui = mkTarget { platform = "lxc"; buildType = "gui"; hostPath = ./hosts/nixos/host.nix; homeFile = ./hosts/nixos/home.nix; };
+        baremetal-gui = mkTarget { platform = "baremetal"; buildType = "gui"; hostPath = ./hosts/nixos/host.nix; homeFile = ./hosts/nixos/home.nix; };
 
         proxmox-pxe-boot = mkTarget { platform = "proxmox"; buildType = "pxe-boot"; hostPath = ./hosts/pxe-boot/host.nix; };
         lxc-pxe-boot = mkTarget { platform = "lxc"; buildType = "pxe-boot"; hostPath = ./hosts/pxe-boot/host.nix; };

hosts/nixos/host.nix

@@ -1,8 +1,17 @@
 _:
 
 {
+  imports = [
+    ../../modules/networking/wifi.nix
+  ];
+
   networking.hostName = "nixos";
 
+  # Only needed now that baremetal-gui exists (ZFS root) -- harmless on the
+  # ext4-rooted linode/proxmox/lxc-gui variants, so set unconditionally
+  # rather than only on the baremetal platform.
+  networking.hostId = "de6a9ffc";
+
   # Preserved from the pre-refactor `nixos` target — stateVersion must never
   # be bumped on an already-installed machine.
   system.stateVersion = "25.05";

modules/disko/baremetal.nix

@@ -0,0 +1,87 @@
+{ vars, ... }:
+
+{
+  # ZFS RAID0 (striped, no redundancy) root pool for the bare-metal gui
+  # host — two disks, each contributing its own top-level vdev. disko's
+  # zpool `mode` defaults to "" (plain stripe) when left unset, which is
+  # what gives RAID0 semantics here rather than mirror/raidz.
+  #
+  # Device paths are placeholders until the real hardware profile lands —
+  # fill in vars.guiRootDisk1/guiRootDisk2 (stable /dev/disk/by-id/...
+  # paths, not /dev/sdX) before running disko against real hardware. Swap
+  # is deliberately left out for now — sizing that sensibly needs the
+  # box's actual RAM size, which comes with the hardware profile too.
+  #
+  # Not yet imported anywhere: this awaits the new bare-metal platform
+  # module (alongside modules/boot/efi.nix for systemd-boot, matching
+  # modules/platforms/proxmox.nix's pattern) once the hardware config is
+  # in hand.
+  disko.devices = {
+    disk = {
+      disk1 = {
+        type = "disk";
+        device = vars.guiRootDisk1;
+
+        content = {
+          type = "gpt";
+
+          partitions = {
+            esp = {
+              priority = 1;
+              name = "ESP";
+              size = "512M";
+              type = "EF00";
+
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+
+            zfs = {
+              size = "100%";
+
+              content = {
+                type = "zfs";
+                pool = "rpool";
+              };
+            };
+          };
+        };
+      };
+
+      disk2 = {
+        type = "disk";
+        device = vars.guiRootDisk2;
+
+        content = {
+          type = "gpt";
+
+          partitions = {
+            zfs = {
+              size = "100%";
+
+              content = {
+                type = "zfs";
+                pool = "rpool";
+              };
+            };
+          };
+        };
+      };
+    };
+
+    zpool.rpool = {
+      type = "zpool";
+
+      rootFsOptions = {
+        compression = "zstd";
+        "com.sun:auto-snapshot" = "false";
+      };
+      mountpoint = "/";
+      options.ashift = "12";
+    };
+  };
+}

modules/hardware-configuration/baremetal.nix

@@ -0,0 +1,23 @@
+# Adapted from the output of `nixos-generate-config`, run from a live GUI
+# ISO boot on the actual gui-host hardware (AMD CPU). fileSystems and
+# swapDevices are deliberately omitted -- the live ISO had no formatted
+# disks to detect, and disko (modules/disko/baremetal.nix) generates both
+# from the declarative zpool layout anyway.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot = {
+    initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+    initrd.kernelModules = [ ];
+    kernelModules = [ "kvm-amd" ];
+    extraModulePackages = [ ];
+  };
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

modules/installer/common.nix

@@ -45,142 +45,23 @@
       disko
     ];
 
-    # Write auto-install script to /root
+    # Auto-install script, kept as a real, version-controlled shell file at
-    etc."auto-install.sh" = {
+    # scripts/installer/auto-install.sh rather than an inline Nix string.
-      text = ''
+    # It sources scripts/env.sh itself (for LAN_DOMAIN, same as every other
-            #!/run/current-system/sw/bin/bash
+    # script in this repo) rather than relying on Nix-level templating, so
-            set -eux
+    # it behaves identically whether it's run straight from a git checkout
-
+    # or from here -- baking scripts/env.sh in alongside it at a matching
-            set -euo pipefail
+    # relative path (installer/auto-install.sh -> ../env.sh) is what makes
-
+    # that resolve correctly in both places.
-        export FLAKE_BASE_URL="git+https://${vars.lanDomain}/beatzaplenty/nixos.git"
+    etc = {
-
+      "nixos-installer/env.sh".source = ../../scripts/env.sh;
-        echo "Fetching available NixOS hosts from flake..."
-        # Two categories deliberately excluded from the menu:
-        #   lxc-*     — these build a config.system.build.tarball meant for
-        #               `pct restore` on Proxmox directly, not an install.
-        #               Running nixos-install against one here would
-        #               bind-mount / onto /mnt and then refuse to touch the
-        #               filesystem it's currently running on — see
-        #               docs/auto-installer.md.
-        #   installer — this *is* the installer image's own flake target,
-        #               not a deployable host; "installing" it means
-        #               nixos-install-ing a copy of the installer into
-        #               itself.
-        mapfile -t options < <(
-          nix eval --json --no-use-registries --no-accept-flake-config --extra-experimental-features "flakes nix-command" \
-            "''${FLAKE_BASE_URL}#nixosConfigurations" \
-            --apply builtins.attrNames \
-          | jq -r '.[]
-              | select(startswith("lxc-") | not)
-              | select(. != "installer")'
-        )
-
-        if [[ ''${#options[@]} -eq 0 ]]; then
-          echo "ERROR: No NixOS hosts found in ''${FLAKE_BASE_URL}#nixosConfigurations" >&2
-          exit 1
-        fi
-
-        echo "Note: lxc-* targets aren't installed this way — build them with"
-        echo "  nix build .#nixosConfigurations.<name>.config.system.build.tarball"
-        echo "and 'pct restore' the result on Proxmox directly. See docs/auto-installer.md."
-
-        echo "Choose the flake profile to install:"
-        select choice in "''${options[@]}"; do
-          if [[ -n "$choice" ]]; then
-            echo "You selected: $choice"
-            break
-          else
-            echo "Invalid selection. Try again."
-          fi
-        done
-
-        echo "Starting install with flake: ''${FLAKE_BASE_URL}#''${choice}"
-
-        # Optional: confirm before proceeding
-        read -rp "Proceed with installation? (y/N): " confirm
-        if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
-          echo "Aborted."
-          exit 1
-        fi
-
-        # A nix-cache host is *the* substituter/remote-builder for every other
-        # host once installed (its own config explicitly excludes itself from
-        # using either — see buildType != "nix-cache" in the nixos flake.nix).
-        # Installing one shouldn't depend on a nix-cache substituter either,
-        # for the same reason — plus in practice "nix-cache" only resolves over
-        # Tailscale, which a fresh installer environment was never connected to
-        # anyway, so it's dead weight even for non-nix-cache installs until
-        # that's sorted out. Override it away here specifically for nix-cache
-        # targets to keep install-time behaviour consistent with run-time.
-        nix_extra_opts=()
-        if [[ "''${choice}" == *-nix-cache ]]; then
-            echo "Installing a nix-cache host — skipping the nix-cache substituter."
-            nix_extra_opts+=(--option substituters "https://cache.nixos.org/")
-        fi
-
-        # Every host reachable through this menu has a Disko config (lxc-*
-        # is filtered out above, and is the only category that doesn't —
-        # see docs/auto-installer.md), so this can run unconditionally: no
-        # need to probe the flake first and branch on whether Disko applies.
-        disko --mode destroy,format,mount \
-            --flake "''${FLAKE_BASE_URL}#''${choice}" "''${nix_extra_opts[@]}" --yes-wipe-all-disks
-
-        # sops-nix derives this host's decryption key from its own SSH host key
-        # at *activation* time, which runs before systemd would otherwise
-        # generate one on first boot. Without pre-seeding it here, secrets
-        # (including the login password) fail to decrypt on first boot.
-        # Generate the key with scripts/secrets/prepare-host-key.sh first.
-        #
-        # Two places a key can come from, checked in order:
-        #   /etc/host-keys  — baked into this image at build time (see
-        #                      modules/installer/host-keys.nix; only present
-        #                      if built with NIXOS_HOST_KEYS_DIR set)
-        #   /root/host-keys — scp'd in manually after boot (older fallback,
-        #                      still supported for images built without keys)
-        mkdir -p /root/host-keys
-        if [[ -f "/etc/host-keys/''${choice}_ssh_host_ed25519_key" ]]; then
-            echo "Found baked-in SSH host key for ''${choice}, installing to target..."
-            install -D -m 0600 "/etc/host-keys/''${choice}_ssh_host_ed25519_key" /mnt/etc/ssh/ssh_host_ed25519_key
-            install -D -m 0644 "/etc/host-keys/''${choice}_ssh_host_ed25519_key.pub" /mnt/etc/ssh/ssh_host_ed25519_key.pub
-        elif [[ -f "/root/host-keys/''${choice}_ssh_host_ed25519_key" ]]; then
-            echo "Found pre-seeded SSH host key for ''${choice}, installing to target..."
-            install -D -m 0600 "/root/host-keys/''${choice}_ssh_host_ed25519_key" /mnt/etc/ssh/ssh_host_ed25519_key
-            install -D -m 0644 "/root/host-keys/''${choice}_ssh_host_ed25519_key.pub" /mnt/etc/ssh/ssh_host_ed25519_key.pub
-        else
-            echo "WARNING: no SSH host key found for ''${choice} (checked /etc/host-keys and /root/host-keys)"
-            echo "sops-nix secrets (including the login password) will NOT decrypt on first boot."
-            echo "Run scripts/secrets/prepare-host-key.sh for host ''${choice} on your admin workstation first,"
-            echo "then either rebuild this image with NIXOS_HOST_KEYS_DIR set, or scp the result to"
-            echo "/root/host-keys/ on this machine."
-            read -rp "Continue without a pre-seeded key anyway? (y/N): " skip_key
-            if [[ ! "$skip_key" =~ ^[Yy]$ ]]; then
-                echo "Aborted."
-                exit 1
-            fi
-        fi
-
-        mkdir -p /mnt/install-tmp
-        export TMPDIR=/mnt/install-tmp
-
-        nixos-install \
-            --flake "''${FLAKE_BASE_URL}#''${choice}" \
-            "''${nix_extra_opts[@]}" \
-            --no-root-password
-
-
-            rm -rf /mnt/install-tmp
-            # Redundant copy of the host's private key — the real one is now at
-            # /etc/ssh/ssh_host_ed25519_key. Nothing NixOS-managed ever cleans this
-            # up on its own since it was written imperatively, not declaratively.
-            rm -rf /root/host-keys
-            sleep 10
-            reboot
-      '';
 
+      "nixos-installer/installer/auto-install.sh" = {
+        source = ../../scripts/installer/auto-install.sh;
         mode = "0755";
       };
     };
+  };
 
   programs.git.enable = true;
 
@@ -192,7 +73,7 @@
   # file-copying/chown.
   programs.bash.loginShellInit = ''
     if [ -n "$PS1" ] && [ ! -e "$HOME/.auto_install_ran" ]; then
-      sudo /etc/auto-install.sh
+      sudo /etc/nixos-installer/installer/auto-install.sh
       touch "$HOME/.auto_install_ran"
     fi
   '';

modules/networking/wifi.nix

@@ -0,0 +1,43 @@
+{ config, lib, vars, ... }:
+
+{
+  # Prestages a NetworkManager connection profile for vars.wifiSsid so the
+  # host associates on first boot with no manual nmtui/nmcli step. Guarded
+  # on a non-empty SSID so leaving the placeholder blank in variables.nix
+  # is a no-op rather than an empty, broken profile — fill it in once the
+  # network is known.
+  #
+  # The password itself lives in secrets/gui.yaml, not variables.nix --
+  # NetworkManager's ensureProfiles renders `psk = "$WIFI_PASSWORD"`
+  # literally into the store (see nixpkgs' own ensureProfiles example,
+  # which does the same for exactly this reason) and its systemd service
+  # envsubst-expands it from environmentFiles at activation time, so the
+  # real value only ever touches /run (root-only, UMask 0177), never the
+  # Nix store.
+  sops.secrets."wifi-password" = lib.mkIf (vars.wifiSsid != "") {
+    sopsFile = ../../secrets/gui.yaml;
+  };
+
+  sops.templates."wifi-password.env" = lib.mkIf (vars.wifiSsid != "") {
+    content = "WIFI_PASSWORD=${config.sops.placeholder."wifi-password"}";
+  };
+
+  networking.networkmanager.ensureProfiles = lib.mkIf (vars.wifiSsid != "") {
+    environmentFiles = [ config.sops.templates."wifi-password.env".path ];
+
+    profiles.${vars.wifiSsid} = {
+      connection = {
+        id = vars.wifiSsid;
+        type = "wifi";
+      };
+      wifi = {
+        mode = "infrastructure";
+        ssid = vars.wifiSsid;
+      };
+      wifi-security = {
+        key-mgmt = "wpa-psk";
+        psk = "$WIFI_PASSWORD";
+      };
+    };
+  };
+}

modules/platforms/baremetal.nix

@@ -0,0 +1,28 @@
+{ ... }:
+
+{
+  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;
+  };
+}

scripts/env.sh

@@ -82,6 +82,12 @@ export PVE1_HOST PVE_TEST_HOST PROXMOX_HOST PROXMOX_SSH_USER PROXMOX_STORAGE \
 : "${NIX_CACHE_HOST:=nix-cache}"
 export NIX_CACHE_HOST
 
+# Matches variables.nix's lanDomain (the Gitea host this flake's own repo
+# is served from -- see scripts/installer/auto-install.sh's FLAKE_BASE_URL)
+# -- update both if it ever changes.
+: "${LAN_DOMAIN:=gitea.lan.ddnsgeek.com}"
+export LAN_DOMAIN
+
 # nix_extra_opts: call as a plain statement (NOT inside $(...)/<(...) --
 # that forks a subshell, and the whole point is exporting a decision back
 # into *this* shell) to populate the global NIX_OPTS array with whatever

scripts/installer/auto-install.sh

@@ -0,0 +1,166 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p jq disko nixos-install-tools
+# shellcheck shell=bash
+# The only genuinely external tools this script calls directly: `jq`
+# (parsing the `nix eval` host list) and `disko`/`nixos-install` (the
+# install itself). Everything disko shells out to internally
+# (parted/sgdisk/mkfs.*/zfs/...) is self-contained -- disko's own
+# generated scripts hardcode absolute Nix store paths for those, they
+# don't rely on this script's PATH at all (confirmed by inspecting a
+# generated system.build.formatScript). The built installer image
+# (modules/installer/common.nix) already has all three in
+# environment.systemPackages, so this nix-shell wrapper is a fast no-op
+# there; it's what makes the script also work standalone (e.g. run
+# directly from a checkout on a stock ISO), where they aren't.
+set -eux
+
+set -euo pipefail
+
+# shellcheck source=../env.sh
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/env.sh"
+
+export FLAKE_BASE_URL="git+https://${LAN_DOMAIN}/beatzaplenty/nixos.git"
+
+echo "Fetching available NixOS hosts from flake..."
+# Two categories deliberately excluded from the menu:
+#   lxc-*     — these build a config.system.build.tarball meant for
+#               `pct restore` on Proxmox directly, not an install.
+#               Running nixos-install against one here would
+#               bind-mount / onto /mnt and then refuse to touch the
+#               filesystem it's currently running on — see
+#               docs/auto-installer.md.
+#   installer — this *is* the installer image's own flake target,
+#               not a deployable host; "installing" it means
+#               nixos-install-ing a copy of the installer into
+#               itself.
+mapfile -t options < <(
+  nix eval --json --no-use-registries --no-accept-flake-config --extra-experimental-features "flakes nix-command" \
+    "${FLAKE_BASE_URL}#nixosConfigurations" \
+    --apply builtins.attrNames \
+  | jq -r '.[]
+      | select(startswith("lxc-") | not)
+      | select(. != "installer")'
+)
+
+if [[ ${#options[@]} -eq 0 ]]; then
+  echo "ERROR: No NixOS hosts found in ${FLAKE_BASE_URL}#nixosConfigurations" >&2
+  exit 1
+fi
+
+echo "Note: lxc-* targets aren't installed this way — build them with"
+echo "  nix build .#nixosConfigurations.<name>.config.system.build.tarball"
+echo "and 'pct restore' the result on Proxmox directly. See docs/auto-installer.md."
+
+echo "Choose the flake profile to install:"
+select choice in "${options[@]}"; do
+  if [[ -n "$choice" ]]; then
+    echo "You selected: $choice"
+    break
+  else
+    echo "Invalid selection. Try again."
+  fi
+done
+
+echo "Starting install with flake: ${FLAKE_BASE_URL}#${choice}"
+
+# Optional: confirm before proceeding
+read -rp "Proceed with installation? (y/N): " confirm
+if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+  echo "Aborted."
+  exit 1
+fi
+
+# A nix-cache host is *the* substituter/remote-builder for every other
+# host once installed (its own config explicitly excludes itself from
+# using either — see buildType != "nix-cache" in the nixos flake.nix).
+# Installing one shouldn't depend on a nix-cache substituter either,
+# for the same reason — plus in practice "nix-cache" only resolves over
+# Tailscale, which a fresh installer environment was never connected to
+# anyway, so it's dead weight even for non-nix-cache installs until
+# that's sorted out. Override it away here specifically for nix-cache
+# targets to keep install-time behaviour consistent with run-time.
+nix_extra_opts=()
+if [[ "${choice}" == *-nix-cache ]]; then
+    echo "Installing a nix-cache host — skipping the nix-cache substituter."
+    nix_extra_opts+=(--option substituters "https://cache.nixos.org/")
+fi
+
+# Every host reachable through this menu has a Disko config (lxc-*
+# is filtered out above, and is the only category that doesn't —
+# see docs/auto-installer.md), so this can run unconditionally: no
+# need to probe the flake first and branch on whether Disko applies.
+disko --mode destroy,format,mount \
+    --flake "${FLAKE_BASE_URL}#${choice}" "${nix_extra_opts[@]}" --yes-wipe-all-disks
+
+# sops-nix derives this host's decryption key from its own SSH host key
+# at *activation* time, which runs before systemd would otherwise
+# generate one on first boot. Without pre-seeding it here, secrets
+# (including the login password) fail to decrypt on first boot.
+# Generate the key with scripts/secrets/prepare-host-key.sh first.
+#
+# Two places a key can come from, checked in order:
+#   /etc/host-keys  — baked into this image at build time (see
+#                      modules/installer/host-keys.nix; only present
+#                      if built with NIXOS_HOST_KEYS_DIR set)
+#   /root/host-keys — scp'd in manually after boot (older fallback,
+#                      still supported for images built without keys)
+mkdir -p /root/host-keys
+if [[ -f "/etc/host-keys/${choice}_ssh_host_ed25519_key" ]]; then
+    echo "Found baked-in SSH host key for ${choice}, installing to target..."
+    install -D -m 0600 "/etc/host-keys/${choice}_ssh_host_ed25519_key" /mnt/etc/ssh/ssh_host_ed25519_key
+    install -D -m 0644 "/etc/host-keys/${choice}_ssh_host_ed25519_key.pub" /mnt/etc/ssh/ssh_host_ed25519_key.pub
+elif [[ -f "/root/host-keys/${choice}_ssh_host_ed25519_key" ]]; then
+    echo "Found pre-seeded SSH host key for ${choice}, installing to target..."
+    install -D -m 0600 "/root/host-keys/${choice}_ssh_host_ed25519_key" /mnt/etc/ssh/ssh_host_ed25519_key
+    install -D -m 0644 "/root/host-keys/${choice}_ssh_host_ed25519_key.pub" /mnt/etc/ssh/ssh_host_ed25519_key.pub
+else
+    # Third place a key can come from: an arbitrary path the operator
+    # points at interactively (e.g. a USB stick, a mount from another
+    # machine) -- only offered when there's an actual human at the other
+    # end of stdin to ask, never in a non-interactive run.
+    key_copied=0
+    if [[ -t 0 ]]; then
+        echo "No SSH host key found for ${choice} (checked /etc/host-keys and /root/host-keys)."
+        read -rp "Path to a directory containing ${choice}_ssh_host_ed25519_key(.pub) (blank to skip): " key_src_dir
+        if [[ -n "$key_src_dir" && -f "${key_src_dir}/${choice}_ssh_host_ed25519_key" && -f "${key_src_dir}/${choice}_ssh_host_ed25519_key.pub" ]]; then
+            cp "${key_src_dir}/${choice}_ssh_host_ed25519_key" "${key_src_dir}/${choice}_ssh_host_ed25519_key.pub" /root/host-keys/
+            key_copied=1
+        elif [[ -n "$key_src_dir" ]]; then
+            echo "WARNING: ${choice}_ssh_host_ed25519_key(.pub) not found in ${key_src_dir}."
+        fi
+    fi
+
+    if [[ "$key_copied" -eq 1 ]]; then
+        echo "Copied SSH host key for ${choice} from ${key_src_dir}, installing to target..."
+        install -D -m 0600 "/root/host-keys/${choice}_ssh_host_ed25519_key" /mnt/etc/ssh/ssh_host_ed25519_key
+        install -D -m 0644 "/root/host-keys/${choice}_ssh_host_ed25519_key.pub" /mnt/etc/ssh/ssh_host_ed25519_key.pub
+    else
+        echo "WARNING: no SSH host key found for ${choice} (checked /etc/host-keys and /root/host-keys)"
+        echo "sops-nix secrets (including the login password) will NOT decrypt on first boot."
+        echo "Run scripts/secrets/prepare-host-key.sh for host ${choice} on your admin workstation first,"
+        echo "then either rebuild this image with NIXOS_HOST_KEYS_DIR set, scp the result to"
+        echo "/root/host-keys/ on this machine, or point at it when prompted above."
+        read -rp "Continue without a pre-seeded key anyway? (y/N): " skip_key
+        if [[ ! "$skip_key" =~ ^[Yy]$ ]]; then
+            echo "Aborted."
+            exit 1
+        fi
+    fi
+fi
+
+mkdir -p /mnt/install-tmp
+export TMPDIR=/mnt/install-tmp
+
+nixos-install \
+    --flake "${FLAKE_BASE_URL}#${choice}" \
+    "${nix_extra_opts[@]}" \
+    --no-root-password
+
+
+    rm -rf /mnt/install-tmp
+    # Redundant copy of the host's private key — the real one is now at
+    # /etc/ssh/ssh_host_ed25519_key. Nothing NixOS-managed ever cleans this
+    # up on its own since it was written imperatively, not declaratively.
+    rm -rf /root/host-keys
+    sleep 10
+    reboot

secrets/common.yaml

@@ -5,121 +5,130 @@ sops:
     age:
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBQUFhWVFVlVlBnNE5FTnMz
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBIakJkWDQ2TjVIS1Q1UlRJ
-            VkxkTmxpRXlzZ3pSNTVZWFUrSllsYWo0alRnCkJSc25TYktSTFFJdkQydHcxOUlj
+            elVLNmhEVUpMNjROWmN6VC8wTnZzeWhLb0hFCmxmTXp3ZVdQMUhDeGlscThSdFhP
-            ajhQU1ZIb1lodEpHTnVhQjJ6WEthaDQKLS0tIDJCY1E2UVBaU3BoMzhXUXlIdnMv
+            eWNZSkFpeEg0cUUxbGFyQWIrTkJkc0EKLS0tIGRBTHdaZ2d5eHhxd3BtWVBLbFlo
-            djZTcE1rcWNTOXFPMmFDYTVoRGo4ZTQKYy8g6pqP3VpTKDIBPbnC8NzCdDvOCKnL
+            OVJlYnQ0N09qWFp2TmtXb2E0Wkk2bzQKTxA4rfkF3qlGpDqaZF/J9tgTx1UZ7ZFt
-            14kSrKmKlzefTrbkVyriz2Jdl2s0F374yfQQFreZ3m4AffSACCxziQ==
+            W1KevMq/Klnkjb9XDuTEx7zgrjILoViVspe6eGI14myBNYtAP4nLSA==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBVQnpVWC9wcnIreG9GeE9U
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBUWXYyUG5UdHdFa2NDZmtt
-            UWhuRytkc2Flc0hyQm5yMjZnelNwaXhlWWc4CjBkWnd4cHNRRXQ0UXFkZGp4QlR1
+            ZG1GSmxVbTg5Qnh4UGxJaitmTmFqK2J1cUV3CmdPSU5GTC9hWkROTkJzMk5Tcmpw
-            eW5NNnE1WFhnb054M1pac2ZidFg4Y3MKLS0tIFdTNmk2V1l2WC9rUk8yd0ZnOEJS
+            ODJzdlIvNkp0ZXdZNlRlUHBkOGVoR1kKLS0tIGsvUWxpU2hkanFNaExJWGozMTJL
-            VkNnejVGVUZPZkorQkltVEplN2FmdTAKRY7DPP5HeFQntn2f/fXLjU6M1V6iug86
+            bndPNkpQNktmQVNKNEhGOEtHSlRBRXMK9rr6NHf3H91GIqTmckjD1eV94FW1vk9G
-            BD09PI+T2DbIBQPotRZisw8IzHu9gY/O3+h0TccyIsXjI9wy/XPCAQ==
+            h2KauyebWPyBe8hsCExiPd45ZGqKF0g8pEtWUzonMq9NU/MNVL8YVQ==
             -----END AGE ENCRYPTED FILE-----
           recipient: age19gfn2yedg76dmztm4hncr7vf3r3c9j0qpt4rap7y7gersjk4m3ks2lhd0e
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBkczFSTVhxWHlIWjhRcWlV
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBXdnpGR2ZnaFRSUUNlOUVy
-            V2JPQXd5Wnk5R3NwWC81T3Z0MW4vYnd5S1ZZClV1NlU1Tzd6UkxPQ2M4MmhLV01G
+            ME9pWkFJRTl6ampuZTR0QlQ2TUVEVHV3dkRFCmxML1NSV2dwanRPK3AySDJiUU9P
-            d3VIb0RhR1RiNTZqNjlQcmg2YjdPeGsKLS0tIDQ1RTFTWGN4MnEvWkRUR3VnN204
+            a2VKZ09EaktYU2xvWWpESWtrU3oxalEKLS0tIEt1aWxuNmlaV3l1OGNqS2RtMmhm
-            WVdFOXdmNC9FVFhBSGNEUUgyYWpYYzAKfdpeaFL/RrIbqpD9hNj8L7UxpmiBjE2I
+            Rk9SUEpBaXY0RG9uMk53ejdJdVZ4NDQKfn4paPsHrfU3Ki2AgPBB8aLBbmD2yh1O
-            go/dR2E1LLXsDPtnSuJb2EZYoFvSsjsIQQQDt+YwRv0fplRtssKdxQ==
+            9rDxv/6xSsDXNTquP11smPOKsRG7mDMDHVByn6GieZrpSxUf9vu3Iw==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1ll6hj5ggruetgjwjfnplpn5xtq35uhlcdflksx3xmnjm6s3uad9sz70jkf
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB6TjhmOTJ0bUpMQWowb0hB
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSArNHZpMDV5a2JCN1NxY2hF
-            T3Era1loU1pMdmkxdnAvRkViekpqZWZjaWgwCkFRQXhFUy9PRVBma2JMUDhqY2F1
+            MWxtNUNVQXp6K3lWYndTRU85Wjh4YlN3UFFrCnNZbHA2Z2RUSmxITm4yeU9rYnV0
-            VVFDRFNVbWpNaEczY1JVQUMyck9XdEkKLS0tIGpxc0tGdVFKK3FteVJKM1Fxa2ky
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             -----END AGE ENCRYPTED FILE-----
           recipient: age120le4a5l8dh3lyfgvmj3d9ksmej6ajs5mer5y7r0vfg3x9fn69dqf8xgzu
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age1jy444f9d9stygj4p3w9kh54cqcfr654tvr75tdvee5cxsgtdtc9q3v60ep
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age120whqj96g26lsgy4udvgsn8dc9lumh8jeu3a564fx79rjr5lxffqmrljuu
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age1xjst4frdh0th6q8m7p7u9g5af7ty5jqeum0p6z8a52a9q7st7ewqw8yl9j
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age10at8862478urh0eeuwh8hzln6ck78jgwtztgxatwqlzwagg77y5snm4xzg
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age1ezk9x53zt8kcnscdm80jcyf0xq97vndv7jsn3rl8cc0cwm2jmpmq372dzs
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age1fxxzpnfse8nd9wz78ht3m0plrmraacf4cpga0pe8fm2tdnqcgy8q7qsyvp
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
           recipient: age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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+            ZoCtv470LPL1M/kTjdPc/nWMgYOHDKkO90gr3WILfHg8idkVuCLT2Q==
             -----END AGE ENCRYPTED FILE-----
           recipient: age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBQazFqSWpaVGtkNFhPU3A5
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+            jYsn7dCvWGFZGVgeyxqfL0jfYNz6dW0yecRE/gbP5hIooxbcPcxfag==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
     lastmodified: "2026-07-19T02:30:40Z"
     mac: ENC[AES256_GCM,data:UiL3VMDF6rq4Nr87KspcDx434q3tfNXeb5pwH2O+4ssNQ6xzcYDdzXBnhAY3zLBsqPMKrvHBd4Ot/gEMcq3FMIVe7Q6p9yWKpep66KZ/yWEhAlwIVhD79Oj8VS+1CHKjf25zpRdhZorp04oeFQQd9VfjJB4EE/Q1aVbwTGlpIic=,iv:i/0conaFgFia+wzNTdUL6tlSTw35HTK3Ap1Sr5RGHf8=,tag:ULbz5FllShA/JjlSRdxA0g==,type:str]
     unencrypted_suffix: _unencrypted

secrets/gui.yaml

@@ -0,0 +1,34 @@
+wifi-password: ENC[AES256_GCM,data:SZQPtU6PYHbf9o83wq3KTupx,iv:FxO68Pn/+N58r/OPLfkAMYPFpP8TYxszMniFd/01E38=,tag:jwxaY6zDEcO5r9OWSfvUyw==,type:str]
+sops:
+    age:
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBrWFpRSURBR0gvRzVIMElk
+            ZlJGZlJvc3lFOVJIZ29YbFp3akFCNG42TWkwCjhNM0J6cjIwRXBzc3VWNVpZSGdL
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+            Zkh1NDhvZjlDc2c0cUZUYVRLdEozS2sKU/r6JnEnUs2WPj/J724B+lgiV84iteZa
+            uMlhgnwYJFLkH7ZyydQqjYcHL7xEInr0taYJN+M0nZIsZTvzAEi7iw==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBXZmYrVTZxWW1QKzhLWThX
+            UFAwSEhId24yMitmVk1kT215OGdqbGp4akFjCjRzN2dkTURXS0wzbzhYL0YxRW41
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+            S9f578O5ZLh2OWaawcSb0oecZJykT9pgudVcuKRunzZN7NQvFxBRnQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBlWnpPUk10YW82TVRzbk80
+            WHJqbXVVSUFrSTVjMEdqUTdSQWwvdG1TcW1nClQ5T0E0akFtSlFGdC9WaU1LbGkw
+            allOSjJ2SjQ0MkVMcVNtdzN3cW1hVzgKLS0tIERlQ2l3NitPQndERTYrNVA3ajF0
+            bCtnYzhHcnZkalRNK1BHbjdIS2JLNmcK5RwFzeaK1KafO4cAtdFh5Tnz1lpZbj1Q
+            aeMmTGMkxJYVGzXKS6SRspVT3MvY4Fvay8B0MezjG5Y5HKNIv22Vog==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
+    lastmodified: "2026-07-22T01:15:21Z"
+    mac: ENC[AES256_GCM,data:dC/oIqMUHkOh3AocOwP7Gc6XGH3L+nTqJfhFNts1DNbRXsopNIxVBtIz2pEhwnWSQrqPisDLmPHFBwRpGVn01u8w8IU1FKbAKC0J2nJXF8ozpInbjzDOmehqPWZG7yaKoq8cwAnp5XOk+IVO4l6tPxLxkExU5fT2ALuMq+sgOko=,iv:jaVyArpf6zMCFa6J9X1aQMGrmFq+W2CPZdWO6vVW68c=,tag:S+qF8/FkgHc4uW0e4ICmSQ==,type:str]
+    unencrypted_suffix: _unencrypted
+    version: 3.13.2

variables.nix

@@ -45,6 +45,20 @@
   # the installer image's nixos/root users.
   adminSshKey = "ssh-rsa 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 wayne@stream";
 
+  # Prestaged wifi SSID for the gui host's NetworkManager profile
+  # (modules/networking/wifi.nix). The password is not here -- it's
+  # sops-encrypted in secrets/gui.yaml (wifi-password) instead, since this
+  # file isn't a secret store.
+  wifiSsid = "nbn-fttp-net-5G";
+
+  # Bare-metal gui host's two disks for a ZFS RAID0 (striped) root pool
+  # (modules/disko/baremetal.nix). Only used transiently at disko-format
+  # time (partitioning); the resulting fileSystems/zpool import reference
+  # by-partlabel/by-id paths afterward regardless, same as
+  # modules/disko/proxmox.nix's own plain "/dev/sda".
+  guiRootDisk1 = "/dev/sda";
+  guiRootDisk2 = "/dev/sdb";
+
   # System
   timeZone = "Australia/Brisbane";