tor-relay: wire beszel-agent with token secret and fix sops key

- Add hosts/tor-relay/host.nix import of host-token.nix so the agent gets its TOKEN from a sops-managed environment file - Add secrets/tor-relay.yaml (encrypted beszel token for this host) - Add creation_rules entry for secrets/tor-relay.yaml in .sops.yaml - Update &lxc-tor-relay age key to the host's actual current key (old key was from a prior LXC incarnation; new key extracted from Switch-nix output: age1gl5ujmhd2pe37...) - Re-encrypt secrets/common.yaml via sops updatekeys to swap in the new key, so the host can decrypt its password hash on next boot Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Merge pull request 'fix(lxc): prevent SSH host key deletion on every rebuild; add recovery script' (#50 ) from worktree-rippling-riding-snail into main
2026-07-24 09:36:03 +10:00 · 2026-07-23 23:20:30 +00:00 · 2026-07-24 09:17:58 +10:00 · 2026-07-24 08:55:21 +10:00 · 2026-07-24 08:17:34 +10:00 · 2026-07-24 07:17:12 +10:00
34 changed files with 1545 additions and 379 deletions
@@ -12,6 +12,21 @@ keys:
  - &lxc-gui age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
  - &proxmox-server age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
  - &vm-server age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
+  - &baremetal-gui age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
+  - &lxc-tor-relay age1gl5ujmhd2pe37acd0eaar8tmnf2na28n8l28s8xct40vqpxvsdwqf49g4l
+  - &linode-docker age1eu65wsmez68gegnufl0gqrs0e6w2409mypjlajlq383d7l2e3pjqy5kn6v
+  - &linode-gui age17pwyghxr6lq06fw46gwqzhc9ut4paz28rpwx5pmv3cxwak6rgyjsw7lk3w
+  - &linode-minimal age1jukmg69cqxnjd0lp5f534jhqe65rxew2hufcmyjxa3rkw6ayef6s2ylcmy
+  - &linode-nix-cache age1tzsrtwd3p3lrr9g7nv3z5nvmzsz54t2uc6tfqwutp6usmav83s2sck25cc
+  - &linode-server age1rf4kj99wuq59k7w8ar326djmgmpl9hcwlnuag07f8gauq8c3y5mqne87s4
+  - &linode-tailscale-exit-node age1d0zhx7u3mfs3nktl67npey87cze4dwsfvfvgaje4rh3gwv500yssckcf6u
+  - &lxc-server age1jc6wx33hdhgwhk6nzy5rr8fkgmqxk9um639tk5h632nqfyaw8czskdptj9
+  - &lxc-tailscale-exit-node age1pgykvq4pmxhhjrqupcp99fyad2uht40pt79dkzg66cfvsjy5apjqls8u68
+  - &proxmox-docker age19ht95nv8uhz2shjmakeut8mc3l5spvrcxs3thhe85an7u02r6sysyv457n
+  - &proxmox-gui age1mhaze5tgvc9lwjpml6dnp3xc292337wgm6376yh6tq4fn492ndjq9h23dq
+  - &proxmox-nix-cache age15me6sx0f8r58xh9v7aqrj6e99n7eu555jkpw422txpkqt4r02v0qpahlyq
+  - &proxmox-pxe-boot age1q3hu6eh3mt4saey7dc3yu04s7knnk2ygpm9xt6mg6rqtem6l0uyq4wzul5
+  - &proxmox-tailscale-exit-node age1tczst3x7thwtcz4vce4rg6kmlsszzm6j45kn2nv860z9wa93a92s05ppmc

 creation_rules:
  # Shared across every currently-deployed host: root/nixos password hash,
@@ -34,6 +49,21 @@ creation_rules:
          - *lxc-gui
          - *proxmox-server
          - *vm-server
+          - *baremetal-gui
+          - *lxc-tor-relay
+          - *linode-docker
+          - *linode-gui
+          - *linode-minimal
+          - *linode-nix-cache
+          - *linode-server
+          - *linode-tailscale-exit-node
+          - *lxc-server
+          - *lxc-tailscale-exit-node
+          - *proxmox-docker
+          - *proxmox-gui
+          - *proxmox-nix-cache
+          - *proxmox-pxe-boot
+          - *proxmox-tailscale-exit-node

  - path_regex: secrets/nix-cache\.yaml$
    key_groups:
@@ -41,6 +71,8 @@ creation_rules:
          - *admin
          - *nix-cache
          - *lxc-nix-cache
+          - *linode-nix-cache
+          - *proxmox-nix-cache

  - path_regex: secrets/server\.yaml$
    key_groups:
@@ -49,9 +81,32 @@ creation_rules:
          - *server
          - *proxmox-server
          - *vm-server
+          - *linode-server
+          - *lxc-server

  - path_regex: secrets/docker\.yaml$
    key_groups:
      - age:
          - *admin
          - *docker
+
+  - path_regex: secrets/tor-relay\.yaml$
+    key_groups:
+      - age:
+          - *admin
+          - *lxc-tor-relay
+
+  # 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
+          - *linode-gui
+          - *proxmox-gui
@@ -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/`
-(shared helpers, sourced by the scripts below — not run directly), and a
-handful of repo-wide scripts left at the top level (`env.sh`,
-`bump-nixpkgs-release.sh`, plus `codex-setup.sh`/`codex-maintenance.sh`
-above). When adding a new script, put it in the 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.
+management), `scripts/proxmox/` (Proxmox deployment), `scripts/installer/`
+(the auto-installer's own shell script, templated into the image — see
+below), `scripts/lib/` (shared helpers, sourced by the scripts below — not
+run directly), and a handful of repo-wide scripts left at the top level
+(`env.sh`, `bump-nixpkgs-release.sh`, plus `codex-setup.sh`/
+`codex-maintenance.sh` above). When adding a new script, put it in the
+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
-  cross-script config here instead of duplicating it per-script.
+  default cores/memory, `NIX_CACHE_HOST`, `LAN_DOMAIN`) sourced by
+  `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`,
-`server`, `docker`, `gui`, `pxe-boot`, `tailscale-exit-node`, `tor-relay`. Not
-every combination is built — e.g. `pxe-boot` has no `linode` variant
-(PXE/DHCP/TFTP need LAN L2 adjacency a Linode VPS doesn't have), and
-`tor-relay` currently only exists as `lxc-tor-relay`. Treat `flake.nix`'s
+Platforms: `linode`, `proxmox`, `lxc`, `baremetal`. Build types: `minimal`,
+`nix-cache`, `server`, `docker`, `gui`, `pxe-boot`, `tailscale-exit-node`,
+`tor-relay`. Not every combination is built — e.g. `pxe-boot` has no `linode`
+variant (PXE/DHCP/TFTP need LAN L2 adjacency a Linode VPS doesn't have),
+`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:
-  boot method, guest tooling, and (for linode/proxmox) the hypervisor-specific
-  hardware config, imported directly by the platform module itself
-  (`../hardware-configuration/vm/{proxmox,linode}.nix`) — **not** wired in
-  from `flake.nix`. `lxc.nix` has no hardware-configuration counterpart since
-  containers share the host kernel; instead it imports nixpkgs' own
+- `modules/platforms/{linode,proxmox,lxc,baremetal}.nix` — platform-specific
+  config: boot method, guest tooling, and the hardware config, imported
+  directly by the platform module itself — **not** wired in from
+  `flake.nix`. VM platforms use `../hardware-configuration/vm/{proxmox,linode}.nix`;
+  `baremetal.nix` uses `../hardware-configuration/baremetal.nix` (adapted
+  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
@@ -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
-`tor-relay` currently only exists as `lxc-tor-relay`. The full list:
+PXE/DHCP/TFTP need LAN L2 adjacency that a Linode VPS doesn't have,
+`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 |
@@ -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`,
-discovers available hosts from this same flake, lets the operator choose a
-target, applies that host's Disko storage configuration, installs NixOS, and
-reboots.
+Logging in as any user (root or `nixos`) runs
+`/etc/nixos-installer/installer/auto-install.sh` (the same file as
+`scripts/installer/auto-install.sh` in this repo — see "Installer process"
+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.
@@ -95,11 +95,11 @@
        ]
      },
      "locked": {
-        "lastModified": 1783740085,
-        "narHash": "sha256-qajyHfZY29G2oEQk+uHxmsJcRoBUBXP9maTpFlwP/dI=",
+        "lastModified": 1784350909,
+        "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,
-        "narHash": "sha256-lDebytrYdd47IBLwvNOD+6AGeoqZ78CIKlp70hzW280=",
+        "lastModified": 1784432872,
+        "narHash": "sha256-n3gKTBIV4ZA5VQpUakffBe3KGu4+mhPoA34rrqS0GkA=",
        "owner": "NixOS",
        "repo": "nixpkgs",
-        "rev": "8eeec934ae0dbeca3d7868c059568a65c08b2fc3",
+        "rev": "fd1462031fdee08f65fd0b4c6b64e22239a77870",
        "type": "github"
      },
      "original": {
@@ -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; };
@@ -19,11 +19,15 @@
      nextcloud-client
      #    vscode
      chromium
+      claude-code
+      fish
+      sops
    ];

    # Optional: set environment vars
    sessionVariables = {
      EDITOR = "vim";
+      SOPS_AGE_KEY_FILE = "/home/nixos/Nextcloud/Filing Cabinet/keys/nixos-sops-age-key-txt";
    };

    file = {
@@ -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";
@@ -1,11 +1,22 @@
-_:
+{ ... }:

 {
+  imports = [
+    (import ../../modules/beszel/host-token.nix {
+      name = "tor-relay";
+      sopsFile = ../../secrets/tor-relay.yaml;
+    })
+  ];
+
  networking.hostName = "tor-relay";

  # No networking.hostId: only ZFS-touching hosts (server, docker) need one
  # for pool-import safety, and this host does neither.

+  services.beszel.agent.environment = {
+    KEY = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFPR9kwtC4TAeTRu46A7+opZsYpxqkRJ+x/ZyB2GWCeG";
+  };
+
  # A genuinely new host (not a pre-refactor carry-over), so it tracks the
  # flake's current nixpkgs release rather than being pinned to an older one.
  system.stateVersion = "26.05";
@@ -18,7 +18,7 @@
  ];

  boot.loader.grub.useOSProber = true;
-
+programs.direnv.enable = true;
  services = {
    xserver = {
      enable = true;
@@ -1,12 +1,74 @@
-{ vars, lib, ... }:
+{ vars, lib, pkgs, ... }:

+let
+  poolName = lib.removePrefix "/" vars.storageRoot;
+
+  # For each NFS share subpath, generate every ancestor path so ZFS datasets
+  # are created parent-first.  e.g. "docker/config" → ["docker" "docker/config"]
+  ancestors = path:
+    let parts = lib.splitString "/" path;
+    in lib.imap1 (i: _: lib.concatStringsSep "/" (lib.take i parts)) parts;
+
+  poolDatasets = lib.unique (
+    lib.concatMap (share: ancestors share.subpath) (lib.attrValues vars.nfsShares)
+  );
+in
 {
  imports = [
    ../beszel/enable-agent.nix
    ../services/zfs/enable-service.nix
  ];

-  boot.zfs.extraPools = [ (lib.removePrefix "/" vars.storageRoot) ];
+  boot.zfs.extraPools = [ poolName ];
+
+  # On a fresh image deploy the data disk (scsi1) starts blank — no pool
+  # exists yet, so zfs-import-tank.service would spin for 60 s and fail.
+  # This service runs first: if the pool is already present it exits instantly;
+  # otherwise it creates it (with all required datasets) so the standard
+  # import service finds it ready on the very first boot.
+  systemd.services."zfs-init-${poolName}" = {
+    description = "Initialize '${poolName}' ZFS pool on first boot if not present";
+    wantedBy = [ "zfs-import-${poolName}.service" ];
+    before = [ "zfs-import-${poolName}.service" ];
+    after = [ "systemd-udev-settle.service" ];
+    unitConfig.DefaultDependencies = false;
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+    path = [ pkgs.zfs_unstable ];
+    script = ''
+      # Already imported — nothing to do.
+      if zpool list "${poolName}" >/dev/null 2>&1; then
+        exit 0
+      fi
+
+      # Pool exists on a device but not yet imported — let the standard
+      # zfs-import-${poolName}.service handle it normally.
+      if zpool import -d /dev/disk/by-id -N "${poolName}" 2>/dev/null; then
+        exit 0
+      fi
+
+      # No pool found at all.  Create it on the Proxmox data disk (scsi1),
+      # which appears as /dev/disk/by-id/scsi-*drive-scsi1 inside the VM.
+      DATA_DISK=""
+      for candidate in /dev/disk/by-id/scsi-*drive-scsi1; do
+        [[ "$candidate" == *-part* ]] && continue
+        [ -b "$candidate" ] && DATA_DISK="$candidate" && break
+      done
+
+      if [ -z "$DATA_DISK" ]; then
+        echo "zfs-init-${poolName}: no data disk found (expected /dev/disk/by-id/scsi-*drive-scsi1)" >&2
+        exit 1
+      fi
+
+      echo "zfs-init-${poolName}: creating pool on $DATA_DISK"
+      zpool create -f "${poolName}" "$DATA_DISK"
+      ${lib.concatMapStrings (ds: ''
+        zfs create "${poolName}/${ds}"
+      '') poolDatasets}
+    '';
+  };

  systemd.services.nfs-server = {
    after = [ "zfs-mount.service" ];
@@ -3,5 +3,6 @@
 {
  imports = [
    ../tor/enable-relay.nix
+    ../beszel/enable-agent.nix
  ];
 }
@@ -31,6 +31,7 @@
    btop
    git
    gcr
+    jq
  ];

  # Secrets shared by every host, decrypted at activation via each host's
@@ -76,6 +77,7 @@
    openssh.authorizedKeys.keys = [
      vars.adminSshKey
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICMJhrfFayLBG+gWtO6oAvgambw5nWWgztiTFEaaaVRH debian@surface"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGygkCljN6uKpdJbHTOQtn8ZnH+wKXDLAwrDFbLrE/65 nixos@nixos"
    ];
  };

@@ -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";
+    };
+  };
+}
@@ -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;
+}
@@ -45,140 +45,21 @@
      disko
    ];

-    # Write auto-install script to /root
-    etc."auto-install.sh" = {
-      text = ''
-            #!/run/current-system/sw/bin/bash
-            set -eux
+    # Auto-install script, kept as a real, version-controlled shell file at
+    # scripts/installer/auto-install.sh rather than an inline Nix string.
+    # It sources scripts/env.sh itself (for LAN_DOMAIN, same as every other
+    # script in this repo) rather than relying on Nix-level templating, so
+    # 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
+    # relative path (installer/auto-install.sh -> ../env.sh) is what makes
+    # that resolve correctly in both places.
+    etc = {
+      "nixos-installer/env.sh".source = ../../scripts/env.sh;

-            set -euo pipefail
-
-        export FLAKE_BASE_URL="git+https://${vars.lanDomain}/beatzaplenty/nixos.git"
-
-        echo "Fetching available NixOS hosts from flake..."
-        # Two categories deliberately excluded from the menu:
-        #   lxc-*     — these build a config.system.build.tarball meant for
-        #               `pct restore` on Proxmox directly, not an install.
-        #               Running nixos-install against one here would
-        #               bind-mount / onto /mnt and then refuse to touch the
-        #               filesystem it's currently running on — see
-        #               docs/auto-installer.md.
-        #   installer — this *is* the installer image's own flake target,
-        #               not a deployable host; "installing" it means
-        #               nixos-install-ing a copy of the installer into
-        #               itself.
-        mapfile -t options < <(
-          nix eval --json --no-use-registries --no-accept-flake-config --extra-experimental-features "flakes nix-command" \
-            "''${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
-            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
-      '';
-
-      mode = "0755";
+      "nixos-installer/installer/auto-install.sh" = {
+        source = ../../scripts/installer/auto-install.sh;
+        mode = "0755";
+      };
    };
  };

@@ -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 "$HOME/.auto_install_ran"
    fi
  '';
@@ -0,0 +1,43 @@
+{ config, lib, vars, ... }:
+
+{
+  # Prestages a NetworkManager connection profile for vars.wifiSsid so the
+  # host associates on first boot with no manual nmtui/nmcli step. Guarded
+  # on a non-empty SSID so leaving the placeholder blank in variables.nix
+  # is a no-op rather than an empty, broken profile — fill it in once the
+  # network is known.
+  #
+  # The password itself lives in secrets/gui.yaml, not variables.nix --
+  # NetworkManager's ensureProfiles renders `psk = "$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";
+      };
+    };
+  };
+}
@@ -0,0 +1,38 @@
+{ ... }:
+
+{
+  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;
+  };
+
+  # The systemd-based initrd (default here since this host has a ZFS root --
+  # see modules/disko/baremetal.nix) locks the root account by default, so
+  # sulogin refuses to hand over a shell if something in the initrd (e.g.
+  # the ZFS pool import) fails and it drops to emergency mode -- confirmed
+  # live: it just loops re-entering the target instead of prompting. This
+  # only affects the pre-switch-root initrd shell, not the installed
+  # system's own login, and is worth the tradeoff on a box already reachable
+  # at the physical console.
+  boot.initrd.systemd.emergencyAccess = true;
+}
@@ -106,6 +106,40 @@ in
    };
  };

+  # NixOS's etc activation removes any /etc file that was in the previous
+  # generation's environment.etc but is absent from the current one — even
+  # real (non-symlink) copies.  On every routine nixos-rebuild switch/test that
+  # lacks NIXOS_HOST_KEYS_DIR the key is absent from environment.etc, so it
+  # gets removed as "obsolete".  sops-nix derives its age decryption key from
+  # /etc/ssh/ssh_host_ed25519_key; deletion cascades into every sops secret
+  # failing with "Error getting data key: 0 successful groups required, got 0".
+  #
+  # Fix: two activation scripts that bracket the etc step.
+  #   preserveSshHostKey — no deps, runs before etc — saves the live key to
+  #                        /run (tmpfs) before etc can delete it.
+  #   restoreSshHostKey  — deps=[etc], runs after etc — reinstalls the key via
+  #                        `install` (atomic, sets mode) if etc removed it.
+  #                        The resulting file is not registered in environment.etc
+  #                        for either the previous or current generation, so
+  #                        subsequent rebuilds leave it alone permanently.
+  system.activationScripts.preserveSshHostKey = ''
+    if [ -f /etc/ssh/ssh_host_ed25519_key ]; then
+      cp /etc/ssh/ssh_host_ed25519_key /run/sshd-host-key-preserve.tmp
+      cp /etc/ssh/ssh_host_ed25519_key.pub /run/sshd-host-key-preserve.pub.tmp
+    fi
+  '';
+
+  system.activationScripts.restoreSshHostKey = {
+    deps = [ "etc" ];
+    text = ''
+      if [ ! -f /etc/ssh/ssh_host_ed25519_key ] && [ -f /run/sshd-host-key-preserve.tmp ]; then
+        install -m 0600 /run/sshd-host-key-preserve.tmp /etc/ssh/ssh_host_ed25519_key
+        install -m 0644 /run/sshd-host-key-preserve.pub.tmp /etc/ssh/ssh_host_ed25519_key.pub
+      fi
+      rm -f /run/sshd-host-key-preserve.tmp /run/sshd-host-key-preserve.pub.tmp
+    '';
+  };
+
  # virtualisation/proxmox-lxc.nix (imported above) registers the Nix
  # store DB via a systemd service (register-nix-paths) -- it never runs
  # an activation script at all. Confirmed live this means neither
@@ -16,6 +16,14 @@
 #
 # --dry-run: adds `nix build --dry-run --no-link` for whatever scope is
 # active (changed-files scope by default, full scope under --full-check).
+#
+# Per-host/per-package eval and dry-run build calls run concurrently (see
+# scripts/lib/nix-parallel.sh) since they're independent of each other.
+# Concurrency defaults to core count capped by available memory (~1GB/job)
+# rather than plain core count, since each concurrent `nix eval` evaluates a
+# whole NixOS system closure and can OOM a small/memory-constrained CI
+# runner otherwise; override via NIX_PARALLEL_JOBS if a runner has more (or
+# less) room than that estimate assumes.
 set -euo pipefail

 script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
@@ -23,6 +31,8 @@ script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "${script_dir}/lib/nix-bootstrap.sh"
 # shellcheck source=lib/nix-eval.sh
 source "${script_dir}/lib/nix-eval.sh"
+# shellcheck source=lib/nix-parallel.sh
+source "${script_dir}/lib/nix-parallel.sh"

 repo_root="$(cd "${script_dir}/.." && pwd)"
 cd "$repo_root"
@@ -246,66 +256,64 @@ echo
 if [[ ${#hosts[@]} -eq 0 ]]; then
  echo "No hosts affected by changed files; skipping host eval."
 else
-  echo "Evaluating host toplevel derivations (${scope_desc})..."
+  echo "Evaluating host toplevel derivations (${scope_desc}, up to ${NIX_PARALLEL_JOBS} at a time)..."
+  # lxc-* hosts deploy via a directly pct-restore-able tarball instead of
+  # nixos-install (see docs/auto-installer.md); proxmox-* hosts can
+  # alternatively be built as a standalone disk image (see
+  # docs/proxmox-images.md). Both are otherwise-unvalidated buildable
+  # surface, easy to silently break without this.
+  declare -a host_eval_jobs=()
  for host in "${hosts[@]}"; do
-    echo "==> $host"
-    nix eval --raw "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.toplevel.drvPath"
-
-    # lxc-* hosts deploy via a directly pct-restore-able tarball instead of
-    # nixos-install (see docs/auto-installer.md); proxmox-* hosts can
-    # alternatively be built as a standalone disk image (see
-    # docs/proxmox-images.md). Both are otherwise-unvalidated buildable
-    # surface, easy to silently break without this.
+    host_eval_jobs+=("${host}${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.toplevel.drvPath")
    case "$host" in
      lxc-*)
-        echo "==> $host (tarball)"
-        nix eval --raw "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.tarball.drvPath"
+        host_eval_jobs+=("${host} (tarball)${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.tarball.drvPath")
        ;;
      proxmox-*)
-        echo "==> $host (diskoImagesScript)"
-        nix eval --raw "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.diskoImagesScript.drvPath"
+        host_eval_jobs+=("${host} (diskoImagesScript)${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.diskoImagesScript.drvPath")
        ;;
    esac
  done
+  run_nix_parallel host_eval_jobs eval --raw "${NIX_EVAL_FLAGS[@]}"
 fi

 echo
 if ! $eval_packages; then
  echo "No packages affected by changed files; skipping package eval."
 else
-  echo "Evaluating buildable packages..."
+  echo "Evaluating buildable packages (up to ${NIX_PARALLEL_JOBS} at a time)..."
+  declare -a package_eval_jobs=()
  for pkg in "${all_packages[@]}"; do
-    echo "==> packages.x86_64-linux.${pkg}"
-    nix eval --raw "${NIX_EVAL_FLAGS[@]}" ".#packages.x86_64-linux.${pkg}"
+    package_eval_jobs+=("packages.x86_64-linux.${pkg}${NIX_PARALLEL_SEP}.#packages.x86_64-linux.${pkg}")
  done
+  run_nix_parallel package_eval_jobs eval --raw "${NIX_EVAL_FLAGS[@]}"
 fi

 if $dry_run; then
  echo
-  echo "Running dry-run builds for the active scope. This will not create result symlinks."
+  echo "Running dry-run builds for the active scope (up to ${NIX_PARALLEL_JOBS} at a time). This will not create result symlinks."
+  declare -a host_build_jobs=()
  for host in "${hosts[@]:-}"; do
-    echo "==> Dry-run build: $host"
-    nix build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.toplevel"
-
+    host_build_jobs+=("Dry-run build: ${host}${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.toplevel")
    case "$host" in
      lxc-*)
-        echo "==> Dry-run build: $host (tarball)"
-        nix build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.tarball"
+        host_build_jobs+=("Dry-run build: ${host} (tarball)${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.tarball")
        ;;
      proxmox-*)
-        echo "==> Dry-run build: $host (diskoImagesScript)"
-        nix build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}" ".#nixosConfigurations.${host}.config.system.build.diskoImagesScript"
+        host_build_jobs+=("Dry-run build: ${host} (diskoImagesScript)${NIX_PARALLEL_SEP}.#nixosConfigurations.${host}.config.system.build.diskoImagesScript")
        ;;
    esac
  done
+  run_nix_parallel host_build_jobs build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}"

  if $eval_packages; then
    echo
    echo "Running dry-run builds for packages."
+    declare -a package_build_jobs=()
    for pkg in "${all_packages[@]}"; do
-      echo "==> Dry-run build: packages.x86_64-linux.${pkg}"
-      nix build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}" ".#packages.x86_64-linux.${pkg}"
+      package_build_jobs+=("Dry-run build: packages.x86_64-linux.${pkg}${NIX_PARALLEL_SEP}.#packages.x86_64-linux.${pkg}")
    done
+    run_nix_parallel package_build_jobs build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}"
  fi
 fi

@@ -68,6 +68,7 @@ cat > "$HOME/.config/nix/nix.conf" <<'EOF'
 experimental-features = nix-command flakes
 accept-flake-config = false
 warn-dirty = false
+build-users-group =
 EOF

 echo "Nix version:"
@@ -22,7 +22,7 @@
 : "${PVE1_HOST:=pve1.sweet.home}"
 : "${PVE_TEST_HOST:=pve-test.sweet.home}"
 : "${PROXMOX_HOST:=$PVE1_HOST}"
-: "${PROXMOX_SSH_USER:=root}"
+: "${PROXMOX_SSH_USER:=wayne}"

 # Where this flake repo lives on the Proxmox node itself.
 # scripts/proxmox/create-proxmox-resource.sh builds images directly on the node
@@ -30,7 +30,7 @@
 # (from this checkout's own `origin` remote) the first time it doesn't
 # find it, installing build tooling via scripts/codex-setup.sh, then
 # `git pull`s it before every subsequent build.
-: "${PROXMOX_REMOTE_REPO_DIR:=/root/nixos}"
+: "${PROXMOX_REMOTE_REPO_DIR:=/home/${PROXMOX_SSH_USER}/nixos}"

 # Storage pool names -- Proxmox's own stock-install defaults, but this
 # varies a lot by setup (ZFS pool name, custom LVM-thin volume, etc.).
@@ -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 $(...)/<(...) --
 # that forks a subshell, and the whole point is exporting a decision back
 # into *this* shell) to populate the global NIX_OPTS array with whatever
@@ -0,0 +1,206 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p jq disko nixos-install-tools zfs
+# shellcheck shell=bash
+# The only genuinely external tools this script calls directly: `jq`
+# (parsing the `nix eval` host list), `disko`/`nixos-install` (the
+# install itself), and `zpool` (exporting a ZFS root pool before reboot,
+# see the comment above that call below). Everything disko shells out to
+# internally (parted/sgdisk/mkfs.*/zfs/...) is self-contained -- disko's
+# own generated scripts hardcode absolute Nix store paths for those, they
+# don't rely on this script's PATH at all (confirmed by inspecting a
+# generated system.build.formatScript). The built installer image
+# (modules/installer/common.nix, plus the upstream
+# installation-cd-minimal.nix it imports via iso.nix) already has all
+# four in environment.systemPackages, so this nix-shell wrapper is a
+# fast no-op there; it's what makes the script also work standalone
+# (e.g. run directly from a checkout on a stock ISO), where they aren't
+# guaranteed.
+set -eux
+
+set -euo pipefail
+
+# shellcheck source=../env.sh
+source "$(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
+
+    # disko's --mode ...,mount left any ZFS root pool imported (that's what
+    # let nixos-install write into /mnt). If we reboot with it still
+    # imported, it isn't just "not exported" -- it's stamped with *this*
+    # live installer environment's hostid, which almost never matches the
+    # target's own networking.hostId (see hosts/*/host.nix; the installer
+    # itself sets none). modules/services/zfs/enable-service.nix and
+    # modules/common/configuration.nix both set boot.zfs.forceImportRoot =
+    # false deliberately (the safe option per that setting's own docs), so
+    # the freshly-installed system's first real boot sees a pool "in use by
+    # another system" and refuses to import it without -f -- which is what
+    # makes boot stall waiting on the ZFS import. Exporting here (a no-op
+    # if the chosen host has no ZFS root, e.g. proxmox-*/linode-*) clears
+    # that in-use state so the next import, from any hostid, succeeds.
+    #
+    # Anything still mounted under /mnt -- nixos-install's own leftover
+    # chroot bind mounts for running the target's activation script
+    # (/mnt/dev, /mnt/proc, /mnt/sys, /mnt/run), and disko's own /mnt/boot
+    # ESP mount (modules/disko/baremetal.nix) -- blocks ZFS from unmounting
+    # its root dataset at /mnt, the same way any nested mount blocks
+    # unmounting its parent. Confirmed live: zpool export failed with
+    # "cannot unmount '/mnt': pool or dataset busy" even after handling the
+    # chroot mounts alone, because /mnt/boot was still mounted too. Because
+    # of this script's `set -e`, that killed the script before it ever
+    # reached reboot, silently defeating the whole point of exporting first.
+    # Unmounting everything under /mnt up front (recursively, so nested
+    # mounts like /mnt/dev/pts come along for free) sidesteps needing to
+    # enumerate every mount disko/nixos-install might leave behind.
+    if mountpoint -q /mnt; then
+        umount -R /mnt
+    fi
+
+    if [[ -n "$(zpool list -H -o name 2>/dev/null)" ]]; then
+        echo "Exporting ZFS pool(s) before reboot..."
+        zpool export -a
+    fi
+
+    sleep 10
+    reboot
@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+# Shared parallel-nix-invocation helper for scripts/codex-maintenance.sh.
+# Source alongside nix-eval.sh:
+#   source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/lib/nix-parallel.sh"
+#
+# The per-host/per-package `nix eval`/`nix build --dry-run` calls in
+# codex-maintenance.sh are independent of each other, so running them one at
+# a time leaves most cores idle for most of the sweep -- run_nix_parallel
+# fans a batch of them out across up to NIX_PARALLEL_JOBS processes instead.
+
+# NIX_PARALLEL_JOBS: how many `nix` invocations run_nix_parallel runs at
+# once. Defaults to core count capped by available memory (~1GB/job,
+# floor 1) rather than plain `nproc` -- each concurrent `nix eval` here
+# evaluates a whole NixOS system closure from scratch, and on a small/
+# memory-constrained CI runner, `nproc` concurrent evals can OOM-kill each
+# other (confirmed empirically: on a 4GB/6-core box, 5-6 concurrent evals
+# started getting killed while 3-4 ran clean and were still ~2x faster than
+# serial). Override via env if a given machine/CI runner has room to spare
+# or needs a tighter cap.
+default_nix_parallel_jobs() {
+  local cores mem_avail_kb mem_cap
+  cores="$(nproc 2>/dev/null || echo 4)"
+  mem_avail_kb="$(awk '/^MemAvailable:/ {print $2}' /proc/meminfo 2>/dev/null)"
+  if [[ -z "$mem_avail_kb" ]]; then
+    echo "$cores"
+    return
+  fi
+  mem_cap=$((mem_avail_kb / 1024 / 1024))
+  ((mem_cap < 1)) && mem_cap=1
+  ((mem_cap < cores)) && echo "$mem_cap" || echo "$cores"
+}
+NIX_PARALLEL_JOBS="${NIX_PARALLEL_JOBS:-$(default_nix_parallel_jobs)}"
+
+# Separator between a job's label and its flake attr in the arrays
+# run_nix_parallel takes -- a control character so it can't collide with
+# anything a label or attr path would plausibly contain.
+NIX_PARALLEL_SEP=$'\x1f'
+
+# run_nix_parallel <jobs_array_name> <nix subcommand + flags...>
+#
+# jobs_array_name: name of an already-populated bash array whose entries are
+# "<label>${NIX_PARALLEL_SEP}<attr>" pairs, e.g.
+#   jobs=("proxmox-docker${NIX_PARALLEL_SEP}.#nixosConfigurations.proxmox-docker...drvPath")
+# Remaining args are passed to `nix` before the attr, e.g.:
+#   run_nix_parallel jobs eval --raw "${NIX_EVAL_FLAGS[@]}"
+#   run_nix_parallel jobs build --dry-run --no-link "${NIX_EVAL_FLAGS[@]}"
+#
+# Prints "==> <label>" followed by that job's stdout+stderr for every job,
+# in submission order (not completion order) so a run stays readable and
+# diffable across invocations even though the work itself doesn't finish in
+# that order. Returns non-zero if any job failed, only after every job has
+# finished and been printed -- same "surface everything, then fail" contract
+# a `set -e` caller gets, just parallelized instead of stopping at the first
+# failure.
+run_nix_parallel() {
+  local -n jobs_ref="$1"
+  shift
+  local -a nix_args=("$@")
+
+  local n=${#jobs_ref[@]}
+  [[ $n -eq 0 ]] && return 0
+
+  local tmp_dir
+  tmp_dir="$(mktemp -d)"
+
+  local i=0 running=0
+  for job in "${jobs_ref[@]}"; do
+    local attr="${job#*"${NIX_PARALLEL_SEP}"}"
+    printf '%s\n' "${job%%"${NIX_PARALLEL_SEP}"*}" >"${tmp_dir}/${i}.label"
+    (
+      if nix "${nix_args[@]}" "$attr" >"${tmp_dir}/${i}.out" 2>&1; then
+        echo 0 >"${tmp_dir}/${i}.status"
+      else
+        echo 1 >"${tmp_dir}/${i}.status"
+      fi
+    ) &
+    i=$((i + 1))
+    running=$((running + 1))
+    if ((running >= NIX_PARALLEL_JOBS)); then
+      wait -n
+      running=$((running - 1))
+    fi
+  done
+  wait
+
+  local failed=0 j
+  for ((j = 0; j < n; j++)); do
+    echo "==> $(cat "${tmp_dir}/${j}.label")"
+    cat "${tmp_dir}/${j}.out"
+    [[ "$(cat "${tmp_dir}/${j}.status")" -ne 0 ]] && failed=1
+  done
+
+  rm -rf "$tmp_dir"
+  return $failed
+}
@@ -6,27 +6,31 @@
 #
 # This is the non-NixOS equivalent of modules/nix-cache/client.nix +
 # modules/nix-cache/remote-builder-client.nix -- those two only apply to
-# hosts built from this flake. A plain Debian box with Nix installed
-# (single- or multi-user install, nix-daemon running) has no NixOS module
-# system to pick that config up, so this edits /etc/nix/nix.conf by hand
-# instead. Run this ON the target Debian machine, as root.
+# hosts built from this flake. A plain Debian box with Nix installed has no
+# NixOS module system to pick that config up, so this edits nix.conf by hand.
+#
+# Two modes depending on who runs it:
+#
+#   root (multi-user / daemon install):
+#     Writes /etc/nix/nix.conf, /etc/ssh/ssh_known_hosts, restarts nix-daemon.
+#     Requires /etc/nix/nix.conf to already exist (i.e. nix-daemon is set up).
+#     Run as: sudo ./configure-nix-cache-client.sh [options]
+#
+#   non-root (single-user install):
+#     Writes ~/.config/nix/nix.conf, ~/.ssh/known_hosts. No daemon to restart.
+#     Run as: ./configure-nix-cache-client.sh [options]
 #
 # The values below mirror variables.nix / modules/nix-cache/client.nix in
 # this repo -- update both if nix-cache is ever rebuilt with a new host
 # key or the cache signing key is rotated (see docs/nix-cache.md).
 #
-# REMOTE_BUILDER_KEY defaults to this machine's own default root SSH
-# identity (matches modules/nix-cache/remote-builder-client.nix's
-# convention for real NixOS clients: authenticate as nixremote with the
-# host's own default key, added individually to
-# vars.remoteBuilderAuthorizedKeys, rather than a separately-named or
-# shared keypair) -- generate one with
-# `ssh-keygen -t ed25519 -N '' -f /root/.ssh/id_ed25519` if this machine
-# doesn't have one yet, then add its .pub to vars.remoteBuilderAuthorizedKeys
-# and rebuild nix-cache.
+# REMOTE_BUILDER_KEY defaults to the running user's default SSH identity
+# (root: /root/.ssh/id_ed25519, other user: ~/.ssh/id_ed25519). That key
+# must be listed in vars.remoteBuilderAuthorizedKeys in this repo and
+# nix-cache rebuilt before remote building works.
 #
 # Usage:
-#   sudo ./configure-nix-cache-client.sh [--dry-run] [--no-remote-builder] [--no-restart]
+#   ./configure-nix-cache-client.sh [--dry-run] [--no-remote-builder] [--no-restart]
 #
 # Env overrides (defaults match variables.nix):
 #   NIX_CACHE_HOST, NIX_CACHE_HOST_KEY, REMOTE_BUILDER_USER, REMOTE_BUILDER_KEY
@@ -36,17 +40,28 @@ set -euo pipefail
 : "${NIX_CACHE_HOST:=nix-cache}"
 : "${NIX_CACHE_HOST_KEY:=ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPeWgMsdaiz4axT/deFc1+0B5bN+GX/NOeW9bbQ0c/IT lxc-nix-cache}"
 : "${REMOTE_BUILDER_USER:=nixremote}"
-: "${REMOTE_BUILDER_KEY:=/root/.ssh/id_ed25519}"

 CACHE_PUB_KEY="cache.local-1:usoWYanY3Kpq2+kDIS2nhWoLZiRxanmdysdzqCFBHW4="
 FALLBACK_URL="https://cache.nixos.org/"
 FALLBACK_PUB_KEY="cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="

-NIX_CONF="/etc/nix/nix.conf"
-KNOWN_HOSTS="/etc/ssh/ssh_known_hosts"
 MARKER_BEGIN="# BEGIN nix-cache client config (configure-nix-cache-client.sh)"
 MARKER_END="# END nix-cache client config"

+# Mode: root uses system-wide paths and restarts the daemon; non-root uses
+# user-level paths and has no daemon to restart.
+if [[ "$EUID" -eq 0 ]]; then
+  install_mode="multi"
+  NIX_CONF="/etc/nix/nix.conf"
+  KNOWN_HOSTS="/etc/ssh/ssh_known_hosts"
+  : "${REMOTE_BUILDER_KEY:=/root/.ssh/id_ed25519}"
+else
+  install_mode="single"
+  NIX_CONF="${XDG_CONFIG_HOME:-$HOME/.config}/nix/nix.conf"
+  KNOWN_HOSTS="$HOME/.ssh/known_hosts"
+  : "${REMOTE_BUILDER_KEY:=$HOME/.ssh/id_ed25519}"
+fi
+
 dry_run=0
 with_remote_builder=1
 restart_daemon=1
@@ -57,7 +72,7 @@ for arg in "$@"; do
    --no-remote-builder) with_remote_builder=0 ;;
    --no-restart) restart_daemon=0 ;;
    -h|--help)
-      sed -n '2,20p' "$0"
+      sed -n '2,37p' "$0"
      exit 0
      ;;
    *)
@@ -67,21 +82,22 @@ for arg in "$@"; do
  esac
 done

-if [[ "$dry_run" -eq 0 && "$EUID" -ne 0 ]]; then
-  echo "ERROR: must run as root (writes $NIX_CONF and, unless --no-remote-builder, $KNOWN_HOSTS)." >&2
-  exit 1
-fi
-
 if ! command -v nix >/dev/null 2>&1; then
  echo "ERROR: no 'nix' binary on PATH -- install the Nix package manager first." >&2
  exit 1
 fi

-if [[ ! -f "$NIX_CONF" ]]; then
+if [[ "$install_mode" == "multi" && ! -f "$NIX_CONF" ]]; then
  echo "ERROR: $NIX_CONF not found -- expected an existing multi-user Nix install." >&2
  exit 1
 fi

+# Single-user: create the config file if it doesn't exist yet.
+if [[ "$install_mode" == "single" && "$dry_run" -eq 0 ]]; then
+  mkdir -p "$(dirname "$NIX_CONF")"
+  [[ -f "$NIX_CONF" ]] || touch "$NIX_CONF"
+fi
+
 builder_line=""
 if [[ "$with_remote_builder" -eq 1 ]]; then
  if [[ -f "$REMOTE_BUILDER_KEY" ]]; then
@@ -117,7 +133,7 @@ fi
 block="${block}
 $MARKER_END"

-echo "== nix.conf block to install =="
+echo "== nix.conf block to install ($NIX_CONF) =="
 echo "$block"
 echo "================================"

@@ -159,7 +175,8 @@ if [[ "$with_remote_builder" -eq 1 ]]; then
  fi
 fi

-if [[ "$dry_run" -eq 0 && "$restart_daemon" -eq 1 ]]; then
+# Only restart the daemon for multi-user installs -- single-user has no daemon.
+if [[ "$dry_run" -eq 0 && "$restart_daemon" -eq 1 && "$install_mode" == "multi" ]]; then
  if command -v systemctl >/dev/null 2>&1 && systemctl is-active --quiet nix-daemon 2>/dev/null; then
    systemctl restart nix-daemon
    echo "Restarted nix-daemon to pick up the new config."
@@ -193,6 +193,16 @@ done

 ssh_target="${PROXMOX_SSH_USER}@${node}"

+# Proxmox tools (pvesh, qm, pct) require root access to the cluster IPC
+# socket. When SSH-ing as a non-root user with sudo, prefix every remote
+# Proxmox command with sudo.
+sudo_prefix=""
+sudo_display=""
+if [[ "$PROXMOX_SSH_USER" != "root" ]]; then
+  sudo_prefix="sudo"
+  sudo_display="sudo "
+fi
+
 remote() {
  if [[ "$dry_run" -eq 1 ]]; then
    echo "[dry-run] ssh ${ssh_target} -- $*"
@@ -214,10 +224,10 @@ cmd_modify() {

  echo "Looking up VMID ${vmid} on ${node}..."
  local kind current_cores current_memory disk_key
-  if ssh "$ssh_target" "qm status ${vmid}" >/dev/null 2>&1; then
+  if ssh "$ssh_target" "${sudo_prefix} qm status ${vmid}" >/dev/null 2>&1; then
    kind="vm"
    disk_key="scsi0"
-  elif ssh "$ssh_target" "pct status ${vmid}" >/dev/null 2>&1; then
+  elif ssh "$ssh_target" "${sudo_prefix} pct status ${vmid}" >/dev/null 2>&1; then
    kind="lxc"
    disk_key="rootfs"
  else
@@ -225,8 +235,8 @@ cmd_modify() {
    exit 1
  fi

-  local config_cmd="qm config ${vmid}"
-  [[ "$kind" == "lxc" ]] && config_cmd="pct config ${vmid}"
+  local config_cmd="${sudo_prefix} qm config ${vmid}"
+  [[ "$kind" == "lxc" ]] && config_cmd="${sudo_prefix} pct config ${vmid}"
  local current_config
  current_config="$(ssh "$ssh_target" "$config_cmd")"
  current_cores="$(echo "$current_config" | grep -oP '^cores:\s*\K\S+' || echo '?')"
@@ -250,9 +260,9 @@ cmd_modify() {
    exit 1
  fi

-  local set_cmd="qm set"
-  local resize_cmd="qm resize"
-  [[ "$kind" == "lxc" ]] && set_cmd="pct set" && resize_cmd="pct resize"
+  local set_cmd="${sudo_prefix} qm set"
+  local resize_cmd="${sudo_prefix} qm resize"
+  [[ "$kind" == "lxc" ]] && set_cmd="${sudo_prefix} pct set" && resize_cmd="${sudo_prefix} pct resize"

  if [[ -n "$cores" || -n "$memory" ]]; then
    local args=""
@@ -359,14 +369,15 @@ else
  echo
  echo "==> Checking ${node} for an existing VM/CT identified as '${host}'..."
  ssh_check_status=0
-  existing="$(ssh "$ssh_target" bash -s -- "$host" <<'REMOTE_SCRIPT'
+  existing="$(ssh "$ssh_target" bash -s -- "$host" "$sudo_prefix" <<'REMOTE_SCRIPT'
 target="$1"
-for id in $(qm list 2>/dev/null | awk 'NR>1{print $1}'); do
-  n="$(qm config "$id" 2>/dev/null | grep -oP '^name:\s*\K\S+' || true)"
+sudo_pfx="$2"
+for id in $($sudo_pfx qm list 2>/dev/null | awk 'NR>1{print $1}'); do
+  n="$($sudo_pfx qm config "$id" 2>/dev/null | grep -oP '^name:\s*\K\S+' || true)"
  [[ "$n" == "$target" ]] && echo "vm ${id} ${n}"
 done
-for id in $(pct list 2>/dev/null | awk 'NR>1{print $1}'); do
-  n="$(pct config "$id" 2>/dev/null | grep -oP '^hostname:\s*\K\S+' || true)"
+for id in $($sudo_pfx pct list 2>/dev/null | awk 'NR>1{print $1}'); do
+  n="$($sudo_pfx pct config "$id" 2>/dev/null | grep -oP '^hostname:\s*\K\S+' || true)"
  [[ "$n" == "$target" ]] && echo "lxc ${id} ${n}"
 done
 exit 0
@@ -453,12 +464,12 @@ REMOTE_SCRIPT
      if [[ "$kind" == "vm" ]]; then
        # qm destroy has no --force to stop-then-destroy in one call (pct's
        # does) -- stop explicitly first if it's running.
-        if ssh "$ssh_target" "qm status ${id}" 2>/dev/null | grep -q running; then
-          ssh "$ssh_target" "qm stop ${id}"
+        if ssh "$ssh_target" "${sudo_prefix} qm status ${id}" 2>/dev/null | grep -q running; then
+          ssh "$ssh_target" "${sudo_prefix} qm stop ${id}"
        fi
-        ssh "$ssh_target" "qm destroy ${id} --purge 1"
+        ssh "$ssh_target" "${sudo_prefix} qm destroy ${id} --purge 1"
      else
-        ssh "$ssh_target" "pct destroy ${id} --force 1 --purge 1"
+        ssh "$ssh_target" "${sudo_prefix} pct destroy ${id} --force 1 --purge 1"
      fi
    done
  fi
@@ -487,7 +498,7 @@ if [[ -z "$vmid" ]]; then
    vmid="<next-free-vmid>"
    echo "[dry-run] would ask ${node} for the next free VMID (pvesh get /cluster/nextid)"
  else
-    vmid="$(ssh "$ssh_target" "pvesh get /cluster/nextid" | tr -d '[:space:]')"
+    vmid="$(ssh "$ssh_target" "${sudo_prefix} pvesh get /cluster/nextid" | tr -d '[:space:]')"
    echo "Auto-assigned VMID: ${vmid}"
  fi
 else
@@ -501,8 +512,8 @@ if [[ "$dry_run" -eq 0 ]]; then
  # both. Any success here means something is already using this ID --
  # refuse to go anywhere near it. (Reconfiguring an existing resource is
  # --modify's job, not this one's.)
-  if ssh "$ssh_target" "qm status ${vmid}" >/dev/null 2>&1 \
-    || ssh "$ssh_target" "pct status ${vmid}" >/dev/null 2>&1; then
+  if ssh "$ssh_target" "${sudo_prefix} qm status ${vmid}" >/dev/null 2>&1 \
+    || ssh "$ssh_target" "${sudo_prefix} pct status ${vmid}" >/dev/null 2>&1; then
    echo "ERROR: VMID ${vmid} already exists on ${node}. Refusing to touch an" >&2
    echo "existing resource here -- use --modify to reconfigure it, pick a" >&2
    echo "different --vmid, or omit it to auto-assign." >&2
@@ -672,11 +683,11 @@ if [[ "$image_already_remote" -eq 0 && -z "$local_image" ]]; then
      # hands the result to the remote shell to re-split, which would
      # otherwise scatter NIX_EXTRA_OPTS (itself several space-separated,
      # %q-quoted tokens) across the wrong positional parameters below.
-      printf -v remote_cmd 'bash -s -- %q %q %q %q %q' \
-        "$remote_repo_dir" "$flake_target" "$remote_dir" "$remote_filename" "$NIX_EXTRA_OPTS"
+      printf -v remote_cmd 'bash -s -- %q %q %q %q %q %q' \
+        "$remote_repo_dir" "$flake_target" "$remote_dir" "$remote_filename" "$NIX_EXTRA_OPTS" "$sudo_prefix"
      ssh "$ssh_target" "$remote_cmd" <<'REMOTE_SCRIPT'
 set -euo pipefail
-repo_dir="$1"; target="$2"; dest_dir="$3"; dest_name="$4"; nix_extra_opts_str="$5"
+repo_dir="$1"; target="$2"; dest_dir="$3"; dest_name="$4"; nix_extra_opts_str="$5"; sudo_pfx="$6"
 declare -a NIX_OPTS=()
 [[ -n "$nix_extra_opts_str" ]] && eval "NIX_OPTS=(${nix_extra_opts_str})"
 cd "$repo_dir"
@@ -694,23 +705,14 @@ if [[ -z "$built" ]]; then
  echo "ERROR: no tarball found under result-${target}/tarball after build." >&2
  exit 1
 fi
-mkdir -p "$dest_dir"
-cp "$built" "${dest_dir}/${dest_name}"
+$sudo_pfx mkdir -p "$dest_dir"
+$sudo_pfx cp "$built" "${dest_dir}/${dest_name}"
 echo "Built and staged: ${dest_dir}/${dest_name}"
 REMOTE_SCRIPT
      local_image="$remote_path"
      echo "Built on ${node}: ${remote_path}"
    fi
  else
-    # PROXMOX_SSH_USER defaults to root (env.sh), which needs no sudo and
-    # can't assume it's even installed on a minimal node -- only shell out
-    # through sudo when actually running as a non-root SSH user.
-    sudo_prefix="sudo"
-    sudo_display="sudo "
-    if [[ "$PROXMOX_SSH_USER" == "root" ]]; then
-      sudo_prefix=""
-      sudo_display=""
-    fi
    if [[ "$dry_run" -eq 1 ]]; then
      echo "[dry-run] would build on ${node}: nix build --no-use-registries --no-accept-flake-config${nix_opts_display} \\"
      echo "[dry-run]   .#nixosConfigurations.${flake_target}.config.system.build.diskoImagesScript"
@@ -728,7 +730,7 @@ REMOTE_SCRIPT
        "$remote_repo_dir" "$flake_target" "$remote_dir" "$remote_filename" "$NIX_EXTRA_OPTS" "$sudo_prefix"
      ssh "$ssh_target" "$remote_cmd" <<'REMOTE_SCRIPT'
 set -euo pipefail
-repo_dir="$1"; target="$2"; dest_dir="$3"; dest_name="$4"; nix_extra_opts_str="$5"; sudo_prefix="$6"
+repo_dir="$1"; target="$2"; dest_dir="$3"; dest_name="$4"; nix_extra_opts_str="$5"; sudo_pfx="$6"
 declare -a NIX_OPTS=()
 [[ -n "$nix_extra_opts_str" ]] && eval "NIX_OPTS=(${nix_extra_opts_str})"
 cd "$repo_dir"
@@ -737,7 +739,7 @@ ensure_nix_profile
 nix build --no-use-registries --no-accept-flake-config "${NIX_OPTS[@]}" \
  ".#nixosConfigurations.${target}.config.system.build.diskoImagesScript" \
  --out-link "result-${target}"
-$sudo_prefix "./result-${target}" \
+$sudo_pfx "./result-${target}" \
  --pre-format-files "host-keys/${target}_ssh_host_ed25519_key" /etc/ssh/ssh_host_ed25519_key \
  --pre-format-files "host-keys/${target}_ssh_host_ed25519_key.pub" /etc/ssh/ssh_host_ed25519_key.pub \
  --build-memory 2048
@@ -746,8 +748,8 @@ if [[ -z "$built" ]]; then
  echo "ERROR: no .raw image found in ${repo_dir} after build." >&2
  exit 1
 fi
-mkdir -p "$dest_dir"
-mv "$built" "${dest_dir}/${dest_name}"
+$sudo_pfx mkdir -p "$dest_dir"
+$sudo_pfx mv "$built" "${dest_dir}/${dest_name}"
 echo "Built and staged: ${dest_dir}/${dest_name}"
 REMOTE_SCRIPT
      local_image="$remote_path"
@@ -812,9 +814,9 @@ if [[ "$type" == "lxc" ]]; then
  # hands the whole string to `ssh` as a single command for the *remote*
  # shell to parse -- unquoted, that `;` would be read as a remote
  # command separator and silently truncate this into two commands.
-  create_cmd="pct create ${vmid} ${iso_storage}:vztmpl/${remote_filename} --unprivileged ${unprivileged_flag} --features '${PROXMOX_DEFAULT_LXC_FEATURES}' --rootfs ${storage}:${local_disk_size} --hostname ${name} --cores ${cores} --memory ${memory} --swap ${local_swap} --net0 name=eth0,bridge=${bridge},ip=dhcp"
+  create_cmd="${sudo_prefix} pct create ${vmid} ${iso_storage}:vztmpl/${remote_filename} --unprivileged ${unprivileged_flag} --features '${PROXMOX_DEFAULT_LXC_FEATURES}' --rootfs ${storage}:${local_disk_size} --hostname ${name} --cores ${cores} --memory ${memory} --swap ${local_swap} --net0 name=eth0,bridge=${bridge},ip=dhcp"
  remote "$create_cmd"
-  remote "pct start ${vmid}"
+  remote "${sudo_prefix} pct start ${vmid}"
 else
  echo "==> Creating VM ${vmid} (${name})..."
  # pre-enrolled-keys=0 disables OVMF's Secure Boot key pre-enrollment --
@@ -825,29 +827,29 @@ else
  # without this flag Proxmox never creates the channel it listens on, so
  # `qm guest exec`/`qm agent` and the UI's IP-address display silently
  # never work for any VM this script creates.
-  remote "qm create ${vmid} --name ${name} --memory ${memory} --cores ${cores} \
+  remote "${sudo_prefix} qm create ${vmid} --name ${name} --memory ${memory} --cores ${cores} \
 --net0 virtio,bridge=${bridge} --bios ovmf --machine q35 --scsihw virtio-scsi-pci \
 --efidisk0 ${storage}:1,efitype=4m,pre-enrolled-keys=0 --agent enabled=1"

  if [[ "$dry_run" -eq 1 ]]; then
-    echo "[dry-run] ssh ${ssh_target} -- qm importdisk ${vmid} ${remote_path} ${storage}"
+    echo "[dry-run] ssh ${ssh_target} -- ${sudo_display}qm importdisk ${vmid} ${remote_path} ${storage}"
    echo "[dry-run] (would parse the resulting disk identifier from that output)"
-    echo "[dry-run] ssh ${ssh_target} -- qm set ${vmid} --scsi0 ${storage}:<parsed-disk-id>"
+    echo "[dry-run] ssh ${ssh_target} -- ${sudo_display}qm set ${vmid} --scsi0 ${storage}:<parsed-disk-id>"
  else
-    importdisk_output="$(ssh "$ssh_target" "qm importdisk ${vmid} ${remote_path} ${storage}")"
+    importdisk_output="$(ssh "$ssh_target" "${sudo_prefix} qm importdisk ${vmid} ${remote_path} ${storage}")"
    echo "$importdisk_output"
    disk_id="$(echo "$importdisk_output" | grep -oP "(?<=Successfully imported disk as ')[^']+" | sed 's/^unused[0-9]*://')"
    if [[ -z "$disk_id" ]]; then
      echo "ERROR: couldn't parse the imported disk identifier from qm importdisk's output above." >&2
      echo "The VM shell (${vmid}) and imported disk both exist -- finish attaching it by hand:" >&2
-      echo "  ssh ${ssh_target} -- qm set ${vmid} --scsi0 ${storage}:<disk-id-from-output-above>" >&2
-      echo "  ssh ${ssh_target} -- qm set ${vmid} --boot order=scsi0" >&2
+      echo "  ssh ${ssh_target} -- ${sudo_display}qm set ${vmid} --scsi0 ${storage}:<disk-id-from-output-above>" >&2
+      echo "  ssh ${ssh_target} -- ${sudo_display}qm set ${vmid} --boot order=scsi0" >&2
      exit 1
    fi
-    remote "qm set ${vmid} --scsi0 ${disk_id}"
+    remote "${sudo_prefix} qm set ${vmid} --scsi0 ${disk_id}"
  fi
-  remote "qm set ${vmid} --boot order=scsi0"
-  remote "qm start ${vmid}"
+  remote "${sudo_prefix} qm set ${vmid} --boot order=scsi0"
+  remote "${sudo_prefix} qm start ${vmid}"
 fi

 echo
@@ -0,0 +1,250 @@
+#!/usr/bin/env bash
+# recover-hosts.sh — Fix sops/SSH-key/GitHub-token issues on deployed NixOS hosts
+# and trigger a Switch-nix rebuild on each.
+#
+# Run from the repo root on the workstation (nixos@nixos):
+#   bash scripts/recover-hosts.sh [<hostname> ...]
+#
+# With no args it discovers and checks every known hostname.
+# With args it checks only those hostnames:
+#   bash scripts/recover-hosts.sh tor-relay
+#
+# Fixes applied automatically (then prompts before rebuilding):
+#   1. SSH host key drift — live key no longer matches host-keys/<target>_ssh_host_ed25519_key
+#      Fix: scp the registered key back and restore it (needs sudo once per host).
+#   2. Stale/invalid GitHub access token — the rendered nix-github-token.conf has
+#      a token GitHub rejects (401), blocking any rebuild that fetches disko or
+#      other public GitHub flake inputs.
+#      Fix: empty the rendered file so nix makes unauthenticated requests instead.
+#      Public repos (disko, nixpkgs, etc.) work fine without auth. sops-nix
+#      re-renders the correct new token automatically after the first successful
+#      rebuild.
+#
+# Both fixes need one interactive sudo session per host. The script opens a
+# single ssh -t per broken host so you enter the password once and all steps
+# run in sequence.
+
+set -euo pipefail
+cd "$(dirname "$0")/.."
+source scripts/env.sh 2>/dev/null || true
+
+SSH_OPTS=(-o StrictHostKeyChecking=no -o BatchMode=yes -o ConnectTimeout=5)
+SSH_USER=nixos
+
+# Known flake-target → ssh hostname map for all currently-defined hosts.
+# Add new hosts here as they are deployed.
+declare -A TARGET_HOST=(
+  [lxc-docker]=docker
+  [lxc-nix-cache]=nix-cache
+  [lxc-pxe-boot]=pxe-boot
+  [lxc-tor-relay]=tor-relay
+  [lxc-minimal]=nix-minimal
+  [proxmox-server]=server
+  [baremetal-gui]=nixos
+)
+
+# ── helpers ───────────────────────────────────────────────────────────────────
+
+info() { echo "  [✓] $*"; }
+warn() { echo "  [!] $*"; }
+step() { echo "==> $*"; }
+
+ssh_host_age() {
+  ssh-keyscan -t ed25519 "$1" 2>/dev/null \
+    | nix shell nixpkgs#ssh-to-age --command ssh-to-age 2>/dev/null \
+    | head -1 || true
+}
+
+registered_age() {
+  local keyfile="host-keys/${1}_ssh_host_ed25519_key.pub"
+  [ -f "$keyfile" ] || return 0
+  nix shell nixpkgs#ssh-to-age --command ssh-to-age < "$keyfile" 2>/dev/null \
+    | head -1 || true
+}
+
+github_token_valid() {
+  local host=$1
+  local raw token code
+  raw=$(ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" \
+    "cat /run/secrets/rendered/nix-github-token.conf 2>/dev/null || true")
+  token=$(echo "$raw" | grep -oP '(?<=github\.com=)\S+' || true)
+  if [ -z "$token" ]; then
+    return 0  # no token = unauthenticated, works for public repos
+  fi
+  code=$(curl -s -o /dev/null -w "%{http_code}" \
+    -H "Authorization: token $token" \
+    "https://api.github.com/repos/nix-community/disko" 2>/dev/null || echo 000)
+  [ "$code" = "200" ]
+}
+
+# ── discover hosts ────────────────────────────────────────────────────────────
+
+if [ $# -gt 0 ]; then
+  HOSTNAMES=("$@")
+else
+  HOSTNAMES=()
+  seen=()
+  for target in "${!TARGET_HOST[@]}"; do
+    h="${TARGET_HOST[$target]}"
+    # deduplicate (e.g. proxmox-server and lxc-server both map to "server")
+    if [[ ! " ${seen[*]:-} " =~ " $h " ]]; then
+      seen+=("$h")
+      if ssh "${SSH_OPTS[@]}" "$SSH_USER@$h" "true" 2>/dev/null; then
+        HOSTNAMES+=("$h")
+      fi
+    fi
+  done
+fi
+
+if [ ${#HOSTNAMES[@]} -eq 0 ]; then
+  echo "No reachable hosts found. Pass hostnames explicitly or check SSH."
+  exit 1
+fi
+
+echo ""
+echo "Hosts to check: ${HOSTNAMES[*]}"
+echo ""
+
+# ── check phase ───────────────────────────────────────────────────────────────
+
+NEEDS_FIX=()
+
+for host in "${HOSTNAMES[@]}"; do
+  step "$host"
+
+  if ! ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" "true" 2>/dev/null; then
+    warn "SSH unreachable — clearing stale known_hosts entry"
+    ssh-keygen -R "$host" 2>/dev/null || true
+    continue
+  fi
+
+  flake_target=$(ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" \
+    "cat /etc/flake-target 2>/dev/null || true")
+  echo "  flake-target: ${flake_target:-unknown}"
+
+  host_broken=false
+
+  # SSH host key
+  if [ -n "$flake_target" ] && [ -f "host-keys/${flake_target}_ssh_host_ed25519_key.pub" ]; then
+    live=$(ssh_host_age "$host")
+    want=$(registered_age "$flake_target")
+    if [ "$live" = "$want" ]; then
+      info "SSH host key OK"
+    else
+      warn "SSH host key MISMATCH (live ≠ host-keys/)"
+      echo "       live:       $live"
+      echo "       registered: $want"
+      host_broken=true
+    fi
+  else
+    echo "  [~] No host-keys/ entry for ${flake_target:-unknown} — skipping key check"
+  fi
+
+  # GitHub token
+  if github_token_valid "$host"; then
+    info "GitHub token OK"
+  else
+    warn "GitHub token invalid (rebuild will fail with 401)"
+    host_broken=true
+  fi
+
+  # sops-nix result
+  sops_result=$(ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" \
+    "systemctl show sops-nix --property=Result --value 2>/dev/null || echo unknown")
+  if [ "$sops_result" = "success" ]; then
+    info "sops-nix: success"
+  else
+    warn "sops-nix: $sops_result"
+  fi
+
+  $host_broken && NEEDS_FIX+=("$host")
+  echo ""
+done
+
+# ── fix phase ─────────────────────────────────────────────────────────────────
+
+if [ ${#NEEDS_FIX[@]} -eq 0 ]; then
+  echo "All hosts healthy — nothing to fix."
+  exit 0
+fi
+
+echo "Hosts needing fixes: ${NEEDS_FIX[*]}"
+echo ""
+echo "Each fix requires one sudo session per host. You will be prompted for"
+echo "the nixos sudo password once per host; all steps run in that session."
+echo ""
+read -r -p "Proceed with fixes + Switch-nix on each broken host? [y/N] " confirm
+[[ "$confirm" =~ ^[Yy]$ ]] || { echo "Aborted."; exit 0; }
+echo ""
+
+for host in "${NEEDS_FIX[@]}"; do
+  step "Fixing $host"
+  flake_target=$(ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" \
+    "cat /etc/flake-target 2>/dev/null || true")
+
+  fix_script=""
+
+  # Fix 1: restore SSH host key
+  live=$(ssh_host_age "$host")
+  want=$(registered_age "${flake_target:-}")
+  if [ -n "$want" ] && [ "$live" != "$want" ]; then
+    echo "  Uploading registered SSH host key (private + public)..."
+    scp -o StrictHostKeyChecking=no \
+      "host-keys/${flake_target}_ssh_host_ed25519_key" \
+      "$SSH_USER@$host:/tmp/recover_ed25519_key"
+    scp -o StrictHostKeyChecking=no \
+      "host-keys/${flake_target}_ssh_host_ed25519_key.pub" \
+      "$SSH_USER@$host:/tmp/recover_ed25519_key.pub"
+    fix_script+='
+echo "[fix] Restoring SSH host key..."
+install -m 0600 /tmp/recover_ed25519_key /etc/ssh/ssh_host_ed25519_key
+install -m 0644 /tmp/recover_ed25519_key.pub /etc/ssh/ssh_host_ed25519_key.pub
+rm -f /tmp/recover_ed25519_key /tmp/recover_ed25519_key.pub
+echo "      Done."
+'
+    ssh-keygen -R "$host" 2>/dev/null || true
+  fi
+
+  # Fix 2: clear invalid GitHub token
+  if ! github_token_valid "$host"; then
+    fix_script+='
+echo "[fix] Clearing stale GitHub token (nix will use unauthenticated access)..."
+echo "" > /run/secrets/rendered/nix-github-token.conf
+systemctl restart nix-daemon 2>/dev/null || true
+echo "      Done."
+'
+  fi
+
+  # Fix 3: rebuild
+  fix_script+='
+echo "[fix] Running nixos-rebuild switch..."
+nixos-rebuild switch \
+  --no-write-lock-file \
+  --refresh \
+  --flake "git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git#$(cat /etc/flake-target)"
+echo "[fix] Rebuild complete."
+'
+
+  echo "  Opening SSH session (enter sudo password when prompted)..."
+  if ssh -t -o StrictHostKeyChecking=no "$SSH_USER@$host" \
+    "sudo bash -s" <<< "$fix_script"; then
+    echo ""
+    info "$host fixed and rebuilt"
+  else
+    rc=$?
+    echo ""
+    warn "$host: rebuild exited with code $rc (may still have succeeded — check sops-nix below)"
+  fi
+
+  # Verify: re-check sops-nix result post-rebuild
+  sops_result_after=$(ssh "${SSH_OPTS[@]}" "$SSH_USER@$host" \
+    "systemctl show sops-nix --property=Result --value 2>/dev/null || echo unknown" 2>/dev/null || echo "ssh-failed")
+  if [ "$sops_result_after" = "success" ]; then
+    info "$host sops-nix: success post-rebuild"
+  else
+    warn "$host sops-nix: $sops_result_after post-rebuild (may need another pass)"
+  fi
+  echo ""
+done
+
+echo "Recovery complete."
@@ -1,126 +1,261 @@
 root-hashedPassword: ENC[AES256_GCM,data:Kp0nOZI7vDoLhJHiOJBwJn0rQZ5yhnwapGnAcA+qh8vlDETtFs/iQdetF/2ZxmANf62SviTNd+Ag0q5JIF1996x7onZGXqxgSMCuVzZLBdUlsO5IR0BslWWz47khYGTe4WkUg4NB1itBfQ==,iv:5Sra5vJ79V8hxQT3g9qJ+dOj2W2sumIhqpitqnHjJdk=,tag:3Igu0+8GeUZHqS3fKUVwog==,type:str]
 nixos-hashedPassword: ENC[AES256_GCM,data:pT7tVRN6X4a+DNUgB7fIUUE3CbnetkjxmoSL1PxSU+ktsFU+fB0mEvJjA1uujsGH5Rcztg7YM815+M0Z67ILmHaXbza5DtFacrqhi4/b277xly0SHRX4yOvBwQh6mJG1jn/0O/wvUUIYdw==,iv:bp2nfhC8nFbk6o5iWDAugvbzu7J/a1xayFnBEtkhNpE=,tag:HqWgkIpSrSM/K9OK2WO+VQ==,type:str]
-nix-github-token: ENC[AES256_GCM,data:OfNRGJg16Ede6EilWUetCs9za+xk5/Lsa3SpVajsqz8PMdA1xQNeCWdX7ZAMdijHClpBhU6ETFGsXvt41O9aORS951uijeGSW7/NH35/bnPISrKdYeBx/+xEiqwH,iv:QGU3v7xOy89uzRTCb1U9ICyJ8XYIpXrUsDt12aL3g2Y=,tag:Bde2wcWNv8H4WLxSEUAodg==,type:str]
+nix-github-token: ENC[AES256_GCM,data:k1vYz7SqVhzpWa6jTL6NUD8lKOCpHCgTm+HT4IcnbzbSTUZP/bJUYw==,iv:UqAULZnr/4+VcioUDfTwvOSuwM8K9JgGhiApvYQPyoc=,tag:1LKHXhWAO/AHPDIZFBb04A==,type:str]
 sops:
    age:
        - enc: |
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+            1WD9H47oGdW0BgBdi4rK4H7fmashw6TxjHZ1JfuCKps4mvvVWb2llg==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
        - enc: |
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            -----END AGE ENCRYPTED FILE-----
          recipient: age19gfn2yedg76dmztm4hncr7vf3r3c9j0qpt4rap7y7gersjk4m3ks2lhd0e
        - enc: |
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            -----END AGE ENCRYPTED FILE-----
          recipient: age1ll6hj5ggruetgjwjfnplpn5xtq35uhlcdflksx3xmnjm6s3uad9sz70jkf
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
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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: |
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          recipient: age1xjst4frdh0th6q8m7p7u9g5af7ty5jqeum0p6z8a52a9q7st7ewqw8yl9j
        - enc: |
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          recipient: age10at8862478urh0eeuwh8hzln6ck78jgwtztgxatwqlzwagg77y5snm4xzg
        - enc: |
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          recipient: age1ezk9x53zt8kcnscdm80jcyf0xq97vndv7jsn3rl8cc0cwm2jmpmq372dzs
        - enc: |
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          recipient: age1fxxzpnfse8nd9wz78ht3m0plrmraacf4cpga0pe8fm2tdnqcgy8q7qsyvp
        - enc: |
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          recipient: age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
        - enc: |
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        - enc: |
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          recipient: age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
-    lastmodified: "2026-07-19T02:30:40Z"
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+        - enc: |
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+        - enc: |
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+        - enc: |
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+        - enc: |
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+        - enc: |
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+          recipient: age1d0zhx7u3mfs3nktl67npey87cze4dwsfvfvgaje4rh3gwv500yssckcf6u
+        - enc: |
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+          recipient: age1jc6wx33hdhgwhk6nzy5rr8fkgmqxk9um639tk5h632nqfyaw8czskdptj9
+        - enc: |
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1pgykvq4pmxhhjrqupcp99fyad2uht40pt79dkzg66cfvsjy5apjqls8u68
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+          recipient: age19ht95nv8uhz2shjmakeut8mc3l5spvrcxs3thhe85an7u02r6sysyv457n
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+          recipient: age1mhaze5tgvc9lwjpml6dnp3xc292337wgm6376yh6tq4fn492ndjq9h23dq
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+          recipient: age15me6sx0f8r58xh9v7aqrj6e99n7eu555jkpw422txpkqt4r02v0qpahlyq
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+          recipient: age1q3hu6eh3mt4saey7dc3yu04s7knnk2ygpm9xt6mg6rqtem6l0uyq4wzul5
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1tczst3x7thwtcz4vce4rg6kmlsszzm6j45kn2nv860z9wa93a92s05ppmc
+    lastmodified: "2026-07-23T21:15:41Z"
+    mac: ENC[AES256_GCM,data:qFhnPra6IE3wyKQ4WKweON0S0YtD5I0adGZVfA0m6BVilN6bX5oC/1j5NK2oHrsz920hSl0SOF8LrpqOrUyGjSRkPsN4kq8qr9bJcrX4URiktP0oRden5LLt6hf+ZRP7WmRXFqixPkPHJnZIoAvkNnTFce7cDq5NEAHkKUEKG7k=,iv:nyblUDGeu3TUfFivYylOn3C/HITj99qiPI2+mh8AGh4=,tag:FrtRzSCylC4wlIoqZdfx7w==,type:str]
    unencrypted_suffix: _unencrypted
-    version: 3.13.1
+    version: 3.13.2
@@ -0,0 +1,52 @@
+wifi-password: ENC[AES256_GCM,data:SZQPtU6PYHbf9o83wq3KTupx,iv:FxO68Pn/+N58r/OPLfkAMYPFpP8TYxszMniFd/01E38=,tag:jwxaY6zDEcO5r9OWSfvUyw==,type:str]
+sops:
+    age:
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
+        - enc: |
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+          recipient: age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age17pwyghxr6lq06fw46gwqzhc9ut4paz28rpwx5pmv3cxwak6rgyjsw7lk3w
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1mhaze5tgvc9lwjpml6dnp3xc292337wgm6376yh6tq4fn492ndjq9h23dq
+    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
@@ -4,31 +4,49 @@ sops:
    age:
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBPWE1HTUhiSUp5ZEUwWEpI
-            bGpkZlBIMUo5ZlYrQ09SN3Q1a0ZkQ0ZnOEhVCnJPNEZQenVWWGZiODlzQzNEc1Zq
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+            I0hBe4epAKL28PlJ4M9P77qqg893beZK3UIJQ5O6d5fGPMNTJiIzAg==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBUYi9SRFFGV3Z6cFd2Znk5
-            b2FLbWtzTllJMDBUaGk0NTViOTNBa2hQclVZClZHKzNhbGVjQUJhWkFWdTFBMG5a
-            cUFJdUdyVG5HQXJRRnJId3hqRTN2cXMKLS0tIEFMRjh3WE1ON0U2TTNTZ3hxMTR4
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-            l9uVMvIGuEsEZgDsvShw1dYLljd+uGy/A+dXbcxIUCP/mmPkwmd1Pw==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBoaEZ5clpxV0ZQWmhSckxY
+            a3I5djhISUphMmV1RU9DREJsZFpDdktyaUJzClBQSUNvN054aXp4SzNkMmNqNVhP
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+            VwttGQj0iDg6UudB+qa2ngFgAc0C++OJebuLMFnK1K+PvUpfw2nRQg==
            -----END AGE ENCRYPTED FILE-----
          recipient: age120le4a5l8dh3lyfgvmj3d9ksmej6ajs5mer5y7r0vfg3x9fn69dqf8xgzu
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSArOWovSW9DeFpxL0VDUDQ3
-            SHUwTzJVZUtPV01ZRkdCUXZGL2lTRCtCNFNnCjBSNExqRW5mTEN5SFVucHJHSzZt
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-            MWV0eW9sOXdQd0l2ZjlWOEVVc1dwcTgK2s4p9xoNkawH2OkGsl80bNIo3ad5vn4W
-            Z2w+jwppSoUmbQnD3WFbLmSSxmuobmU8HILwElv6SZu+KE3aspF6XA==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBKNXBOeS9od1lBd0VGSDRX
+            RE5BM3g0Zk53ZzBhdW9XUFhscmpHdEV1aG1vCnU0OGZZdENBdHd0Tzd5b05BR3RR
+            ZGNZRlVSVk41YzgyRnlHK1NUaXhqZVUKLS0tIGFKcWF3VGdibldnMndmSis5Skc5
+            aEZJVGh1UDFVUldrRndVZURGbVJMUXMKia/z+zwpfcaILCt4fpy7wsR0QkFKf07d
+            QwkV+gEfM3EydhcA7invDieIKbcOUoKKgOmf2sXMgW07CsjG1QXk6w==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1xjst4frdh0th6q8m7p7u9g5af7ty5jqeum0p6z8a52a9q7st7ewqw8yl9j
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBpcTJHRy9CZlVWcERMRzlL
+            MVFyVHlRT1hnQTBsSlBYOWtoSzVyejJIM0RzCmFKM3J5cE1BejhHYVl0VzNTSXdj
+            dENsTCtJT0JFT3I0eGJtOFMvdjFmTm8KLS0tIE1zSmhBMjNnelQrdkJ3eVR6SFo1
+            QXJtMVRuS1daOU53dmxGdFIwN0ZOVW8KS0XIDkbp+1W+wUDHkaKXZ84QpcO0zK54
+            FrMzkChowtm/a+RSLVadBGDQv2R4gV89NArP/YAEQa7GK9aHvDlH/g==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1tzsrtwd3p3lrr9g7nv3z5nvmzsz54t2uc6tfqwutp6usmav83s2sck25cc
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA2bnJZUFVVRTBrZExoSWJV
+            NDI2WUluaWJHVVdiR1JBUjhJT0owaTNoL1JBCjh2Y3ZvZXYrSE4raGtrcXVZai9L
+            cUFERVRvMEZPaC9oa01NSHR1ejBIdk0KLS0tIG5ZNmZqZWZxKzd4c2pYOEhwa0li
+            NDRQV1hDZ3ZwZksyTUtjcEVGWVpFMTgKmpLn5Ov03MKITQ7QihjK4GsYlHQiAFAc
+            pI7z78qQv34e7DLLJotxbeWYyX/IOe+DvUm9T8NGY4ujI2y3HjXPlQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age15me6sx0f8r58xh9v7aqrj6e99n7eu555jkpw422txpkqt4r02v0qpahlyq
    lastmodified: "2026-07-19T23:30:21Z"
    mac: ENC[AES256_GCM,data:kLGE2xawQT7mx+sfw68hmGk5nCEGiEjZrqTEl9B1dtQmTrMwmoVr/1RISi4LfJrwxy31mDgff4lcIL4wIJuM373uk3X8j4RNyYQNTfKEkORT6r8NHeepNs267O77pKGd7OmcM4MT/BqOnB8ELS7Wlf2ect7CAlvUUVyc8icxgZE=,iv:EYLDsHYHZ1XOQXafOTqHHWpk/OBNq/R6IJnOBYV33E4=,tag:thxrCPC5oGvDjhK7Dz87YA==,type:str]
    unencrypted_suffix: _unencrypted
@@ -3,40 +3,58 @@ sops:
    age:
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBaYU9HR0lETDhkYXR5NWlj
-            L0diSE5JQU9KWjRoU3hrVjdqZ2tPNUtOdFZvCjdUVGNFbDVYa3pVSC9ZWVNORER4
-            QWozUlhoSEtjTk9IRlM3VkZoYlc1RTAKLS0tIDlHS01WVWlOMWFEQU5GTVRLZVhV
-            VTcwekhrRHB3SlVYT2MzOW5GbE52dkkKKCWehPhpdGapdyzpll20NJUcZwvW/7X8
-            KQ1EqAgI2fewnbwuIDYCleN0b0SLJNUeSV/tFKDDoTMnHWCdeD4ECg==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBwbWFOSlB0ckJFc2hiQTlh
+            eEo1NzZSTWovRXNnTGJDWTVZRUsvbjQ2NGx3CithSDVSbFpCYW9KQjJndzR3aVlL
+            MHBDRmQxSEpTZ1FsRXFWQlE2aFc1VGsKLS0tIDc5bmI4WWtvcStZVk5WNDhva1dk
+            cEVKM2ZCTGdLM2NEbmRudk1SdDNzMTAKB6QCrxxNzazSbif28j6RNIfdfUTKxklM
+            Xip5xoLjTRNOjq561OS34gaMA1GE27YQqsqtgiU15i7SZ7IGefWpZQ==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB4YndybFBTQ2p4SGZ4SDJs
-            a2p0eFRQOVVWcGd2a25ESW9ESGx1RWw0Zno4CnhpVVh3cGI5UjY0YmFINFFPMTh4
-            b1B5SjJ3NTNvUE1QUmJjVFozY1dYS2MKLS0tIC9HZGNpOFZhZGNFZGt5blJuZXVV
-            SXpkRzV4d2ppV3ZQZSt1dmxYNGVFMUEKmSe9dkrmkND81Hw2/ATAmFvcmhk1tUC1
-            LxxBw54IVHUqwYKgRYUYRNu+pykDT5OnFDPiskd49Xso99LY87PyiA==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB2MDVmZGp0bEpwZWRLZFFM
+            ckY1eERsSHFuMnhPK3J0eFRLY3lHYnlEK0NnCmNhQjlnUTNFOVF0UVBLendHYmdx
+            aXVIa2hmNENUNGdZL2FmbTlNekd5NUkKLS0tIDdwbmFGZVFlaG94UEgvOUNxdVlz
+            VHJZenplYVVPa2NUSUFWeEN5bGQ1MkUKT5CqEiCN61aOpvMlBp0effS3bh345E7u
+            wfxrMwMhrEzfnmpkvcafLCn9PMicqLuz48J9ipF5IHLf7MIvbT31ow==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1ll6hj5ggruetgjwjfnplpn5xtq35uhlcdflksx3xmnjm6s3uad9sz70jkf
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBLd1FSSHVTSGdHWm8wMVQz
-            d0dlOEsxeGwxdHU0eUlFSUxka0ZmcVpnOTM0CndYNUVjVy92QVhNY2orQmpSQjYy
-            VS9KM0NUTXhuM0lCSDBZMWtISEdtWTgKLS0tIExTL2wvS3FEdVViUmRYZEFsR3R0
-            YTJFM200RjF6MjNxOFA4eHRpWVhtRkUKOqBIT445HnPXrrH/qV6FIuAhAuJmSL6V
-            +PQopM/m3PAnK5m5Mu3cfjYfDiB8+GWTABhljfT+GbcoK7CqWLehrw==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBPS05tWG41Z3BwREhxUVRY
+            ZVBMQjhxRDNwUDBjVE1jNnlVOWZtcE81Smk0CnlHaEl2OTd2UnJhWmlHNmY2V3NQ
+            SUJKakZOZkdXeFhnZTF6dmxzTGFzZjAKLS0tIFhwKy84Z0l3cEhSQ0NBbVJIKytM
+            QzhxbTY0SkdkOWN5VDU2d0dTMzlGN00KtgobQ2hsilZnvoq/BesaM/RcYbVNHxSh
+            vEA80nUhyEdRim8WP/yu5KrgHsEVQ9ryclU4B49F1pINdAVaGRo9LA==
            -----END AGE ENCRYPTED FILE-----
          recipient: age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
        - enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAvVXF4a2NmaW15R2VXS3FP
-            SDVPUGpUWTlIWjl2N2N2SXR1UlRkdllWNVRJClZDbVo4dUhrZytqZkMrYWtpOEZx
-            c0dSZGViN04zQ1B1WEZEWm1QM1lsejQKLS0tIE0wa0k5Rm1xZmw3OHFESkVXc25j
-            NlFpYTJSckQ4MVlZQ01reDlkaWY3TkEKsmQlreRhRAjVZ/q5x52FNATDF2sLhbHo
-            djOZigZx2rs6shqQ6It/XRJ8CiPaXZBPOt529Gwmplu+hWlAU1+l2Q==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB5NUxUMHdrbzl0OEl2RXoy
+            S1ovL05lTXhSNXBXZEtWU2hsdXhBZHlqc21rCnY0a1Z4QXZnTnJyTDR0WVgyYk5m
+            cHJJZkhoM2lNaG51TmY3K0hZeXZKM1kKLS0tIGU2MmV1TTFTY3QyQVNEb2ZxYmlU
+            c1doTkVLZEhKeDJTWmtLWjIrclRUenMKRem1nKPK/ghuipzOLTf6V3Ke5LK5S6LW
+            5ExYf7y++FC90IqkAqeIA67l2KihcPE0DqnBmwrDlNgL5tXyhYV39g==
            -----END AGE ENCRYPTED FILE-----
          recipient: age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBvZkxwdUhOU3diRVFjSkhH
+            SmFDbjYzblFUZ2NLRmpiVGxuUGVrWC9BWERZCkl6MVJ0M3dvNGU0UmQ5Nm1VWmRm
+            ckVjSENWb05qMWtLQzNJd0tUWmgydWsKLS0tICtydnQyUXluWmxwWVpQWVRqOW9L
+            VjhoelJCZjM4aHh4UG0wcUJMSVFGbncK6B1Rou2axRoRQNXudD6BVq5buz9MJapB
+            vYMEhQPVCU2SinltqIrgd00qjgE7+oPnGr5pTFSQisJLlN3X1LUbhQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1rf4kj99wuq59k7w8ar326djmgmpl9hcwlnuag07f8gauq8c3y5mqne87s4
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBvV0E2MnpDZzNkbC9DNGZ4
+            U1JLQ3J3ZHo2cEpraFlSdTA0V01wdlNaMkE0CjQ0SDBXT2tYU2VmZjNja0M0VG5K
+            Z1FkVWhYODVDNkhBR0o1NW43SjZRZW8KLS0tIEtrMFI0YjZIQzd5bHVMSmRSWi83
+            U20zMkg2UWpEclMxalNhMThlWXdhaDQKX6qsiRZqlFVhq5lP5B/XVqStq8Impvx9
+            MTmVRuMzFQ5qTs4BjhIqO25Ez+CI2GAq2K10prdSEin69gSTxntkIg==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1jc6wx33hdhgwhk6nzy5rr8fkgmqxk9um639tk5h632nqfyaw8czskdptj9
    lastmodified: "2026-07-19T02:30:40Z"
    mac: ENC[AES256_GCM,data:rKHZjU/MH08ASTlu32HZO9uWmsBYuMCEC6M8gwVhzuWvmablnP05tS2z13XfaWaCEUXk6kmGJKuU0zu5+IKVZgamCF6DAMtxQb6bVCaLsoAm/GSqWQ5VI9eHqgnSSdN/o3ul/33Rf8iBQo4aw8FFAmDVuNz8bfAn0QefFTj0ByI=,iv:JD2gtqRinOY77etg6PUmZNovkYl1Q3F6ZvRi4x7RznQ=,tag:/5IMpWKRVt+l1luCTQE0BA==,type:str]
    unencrypted_suffix: _unencrypted
@@ -0,0 +1,25 @@
+beszel-token: ENC[AES256_GCM,data:gjbT3uROiVKQOJaUeafTxjVknQO1Tvbyx/Pl2bTad7DezByX,iv:3ikf7OaT2omO8yd6G6UwYbaRBSzyvbn+NghxAe5bcgI=,tag:Zuc2EP8rUtdDhr5CzSW2Pw==,type:str]
+sops:
+    age:
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB5QVJmWlBlNmFTQ2RUaWdI
+            amdKLzdRVVdxdW5ROU9CRldKanU5QXkzc3hZClBGRWp5ajNFWWcrdlJaM2hEK1B0
+            emllQ2JLSkZFMG03WjNvQkc3RThrUlkKLS0tIElnR0tZVTlvTk00OGhrZUorUGJo
+            RGYraGU1dUg4SGJGcnVqdklINTdNbHcKeAotrwsYxsE4ktOzUgEaIibRprGf7pXQ
+            5GttilLcmfQNBeaA8z870impTdj6EZfUVItwaIzhN0dG9TcK7oJBoA==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBHbFY4WVp6OVNydnJ4eFc4
+            OEFDTzBTSzlVQkh5Vko4Rk80VURHSjlqbzBBCnRJNTJZRUNPaGNVUm9FV0ptdjVD
+            d3RUV3l2VERUMXhZVGRXRmsyR05lQk0KLS0tIC9RM052SHRrVjdyZkRhMk04RWI4
+            UHVxYXp5N0NKaCtmZ291MjNNakFwb1kKB3RlWa0adUCgaIUxGaN8Uzwkak7EtmX2
+            rBnOkujIVWMy9KHPltZtfRAQrY7nS2njhK1hFfTSomqdoJMFgH/iCQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1gl5ujmhd2pe37acd0eaar8tmnf2na28n8l28s8xct40vqpxvsdwqf49g4l
+    lastmodified: "2026-07-23T23:32:57Z"
+    mac: ENC[AES256_GCM,data:l9a/yNRoxY1hvSkLuR4N7deeKue/1JPlSvZvJfCSNbQ21p1qR433BbSDYvfW+kXQXS8GVcfgXSd9ywNzgVvkA5lR1++uYsZBLbYxJ+s3TKWs6/yECAZ0eM1KBA0BEm7cLSsHTOwd+2WspvmCYir++FDO9XRuS3guiMnQBglDf/E=,iv:eE6GVqexQNSiLYfmTTUdUx5AO//wyjSIsr96xAX1pcI=,tag:CNsoyDZYLUt5Seu7W5wJrw==,type:str]
+    unencrypted_suffix: _unencrypted
+    version: 3.13.2
@@ -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";