fix(tailscale): rename tailscale-subnet-router → tailscale-router everywhere

Complete the rename so all identifiers match networking.hostName:
- flake.nix: attribute names and buildType strings
  (linode/proxmox/lxc-tailscale-subnet-router → *-tailscale-router)
- modules/build-types/tailscale-subnet-router.nix → tailscale-router.nix
- .sops.yaml: anchor and alias names (age keys unchanged, no re-encrypt needed)
- host-keys/: local gitignored key files renamed (not committed)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.sops.yaml

@@ -5,14 +5,27 @@ keys:
   - &nix-cache age120le4a5l8dh3lyfgvmj3d9ksmej6ajs5mer5y7r0vfg3x9fn69dqf8xgzu
   - &nix-minimal age120whqj96g26lsgy4udvgsn8dc9lumh8jeu3a564fx79rjr5lxffqmrljuu
   - &proxmox-minimal age10at8862478urh0eeuwh8hzln6ck78jgwtztgxatwqlzwagg77y5snm4xzg
-  - &lxc-nix-cache age1xjst4frdh0th6q8m7p7u9g5af7ty5jqeum0p6z8a52a9q7st7ewqw8yl9j
-  - &lxc-docker age1ezk9x53zt8kcnscdm80jcyf0xq97vndv7jsn3rl8cc0cwm2jmpmq372dzs
-  - &lxc-minimal age1jy444f9d9stygj4p3w9kh54cqcfr654tvr75tdvee5cxsgtdtc9q3v60ep
-  - &lxc-pxe-boot age1fxxzpnfse8nd9wz78ht3m0plrmraacf4cpga0pe8fm2tdnqcgy8q7qsyvp
   - &lxc-gui age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
-  - &proxmox-server age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
-  - &vm-server age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
-  - &baremetal-gui age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
+  - &baremetal-gui age1adur9g330gua4l6ndk8cqjg35qc8yxwgme6wrl2hpylcc7vxm38q05ejuy
+  - &linode-docker age17e89ty6p0fw24daanen57wg8uald9s025t3wwxsw269svwpmgvrshfvfvt
+  - &linode-gui age1hrx8qj02fj2ea6d4g9vqhyj9hl7fppkjqfdx2l37py3h6pdkr95s8n8rvs
+  - &linode-minimal age1e7l8dusgmgfzd2cxrrzwepzjxt69hzqj4epee0cs27u6yg4kxcuqm34ncx
+  - &linode-nix-cache age1jcx3yajjhghn8qh8za3yeu8nxykzlg3p4nrv03vnfvzl0mzayg2qmg940e
+  - &linode-server age1sweerhrga9yf8x6sv0apz4ed4g48rnlcq34rpv20t0rcelwgpgeqwvndzz
+  - &linode-tailscale-router age1f7usptjx9rv4rxauasve200gxtdt9jkqhhdqstlf20wvlm7u75rsjfw50m
+  - &lxc-docker age17jqc66x9yeshfgd9v78mj483r4zzarqdtuxtrkxe4x5mw679gphshd94th
+  - &lxc-minimal age1px0h5l9zp2dww0m8fncrc82kfdmzplsfv2ltat7sna28xpg09pqqcl3s2k
+  - &lxc-nix-cache age1ufg390ydrmma849t9xfkxxl5xvdkk6mngnlzhmy7mvuaje8sgcmsmnq6l7
+  - &lxc-pxe-boot age16j42pdc5dr6wnj7xayhkqdj2rny9u68fcqejs50hqq42scssh4gsnrrnlt
+  - &lxc-server age1nruncs4l0ufk7yuc4des8p99c0alfndl0lhsws8tycl5pplfp56s30af5f
+  - &lxc-tailscale-router age1k7d2du5mejsmv5rzavm4xwgpthqvcfsehduquv28nzs53zppa3kqngfxq2
+  - &lxc-tor-relay age16kqfmvz4e23hmdlqresnyw69ej604s320mmd49h4hm3fhqchtgyqrws0k2
+  - &proxmox-docker age1arhf2q45zw6wf2uevju4savp575x3m2tfvved5zzq3ay92ynua9s3cm92c
+  - &proxmox-gui age19mn8zrxl8zpps9yvrh4euquvygpp4fp8queg7xc6qhtnl4ng8c9qx02qwn
+  - &proxmox-nix-cache age1jlltcv5jcnm40z5k0q6hv053k2rqpqvemtuecdwn527uw8uqz4es3x7m68
+  - &proxmox-pxe-boot age1ug787sgt6st6k82fgkrug2lzltw4qsukrrqqs3w27ewwqj8rg4hsxcmylz
+  - &proxmox-server age1529taqdwr6t0w7cvzmty0d5y5593wffl0krt48j6uc4u39k56g2qf6ywtp
+  - &proxmox-tailscale-router age1zhfyuzlq40reuqlr34gf77852nhs3t6mqfzrqmas8z6sxk7tcfhsungrm0
 
 creation_rules:
   # Shared across every currently-deployed host: root/nixos password hash,
@@ -26,31 +39,47 @@ creation_rules:
           - *docker
           - *server
           - *nix-cache
-          - *lxc-minimal
           - *nix-minimal
-          - *lxc-nix-cache
           - *proxmox-minimal
-          - *lxc-docker
-          - *lxc-pxe-boot
           - *lxc-gui
-          - *proxmox-server
-          - *vm-server
           - *baremetal-gui
+          - *linode-docker
+          - *linode-gui
+          - *linode-minimal
+          - *linode-nix-cache
+          - *linode-server
+          - *linode-tailscale-router
+          - *lxc-docker
+          - *lxc-minimal
+          - *lxc-nix-cache
+          - *lxc-pxe-boot
+          - *lxc-server
+          - *lxc-tailscale-router
+          - *lxc-tor-relay
+          - *proxmox-docker
+          - *proxmox-gui
+          - *proxmox-nix-cache
+          - *proxmox-pxe-boot
+          - *proxmox-server
+          - *proxmox-tailscale-router
 
   - path_regex: secrets/nix-cache\.yaml$
     key_groups:
       - age:
           - *admin
           - *nix-cache
+          - *linode-nix-cache
           - *lxc-nix-cache
+          - *proxmox-nix-cache
 
   - path_regex: secrets/server\.yaml$
     key_groups:
       - age:
           - *admin
           - *server
+          - *linode-server
+          - *lxc-server
           - *proxmox-server
-          - *vm-server
 
   - path_regex: secrets/docker\.yaml$
     key_groups:
@@ -58,6 +87,12 @@ creation_rules:
           - *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
@@ -70,3 +105,5 @@ creation_rules:
           - *admin
           - *lxc-gui
           - *baremetal-gui
+          - *linode-gui
+          - *proxmox-gui

flake.nix

@@ -96,9 +96,9 @@
         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; };
 
-        linode-tailscale-exit-node = mkTarget { platform = "linode"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
-        proxmox-tailscale-exit-node = mkTarget { platform = "proxmox"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
-        lxc-tailscale-exit-node = mkTarget { platform = "lxc"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
+        linode-tailscale-router = mkTarget { platform = "linode"; buildType = "tailscale-router"; hostPath = ./hosts/tailscale-router/host.nix; };
+        proxmox-tailscale-router = mkTarget { platform = "proxmox"; buildType = "tailscale-router"; hostPath = ./hosts/tailscale-router/host.nix; };
+        lxc-tailscale-router = mkTarget { platform = "lxc"; buildType = "tailscale-router"; hostPath = ./hosts/tailscale-router/host.nix; };
 
         lxc-tor-relay = mkTarget { platform = "lxc"; buildType = "tor-relay"; hostPath = ./hosts/tor-relay/host.nix; };
       };

hosts/nixos/home.nix

@@ -19,11 +19,15 @@
       nextcloud-client
       #    vscode
       chromium
+      claude-code
+      fish
+      sops
     ];
 
     # Optional: set environment vars
     sessionVariables = {
       EDITOR = "vim";
+      SOPS_AGE_KEY_FILE = "~/.config/sops/age/keys.txt";
     };
 
     file = {

hosts/tailscale-exit-node/host.nix

@@ -1,12 +0,0 @@
-_:
-
-{
-  networking.hostName = "exit-node";
-
-  # No networking.hostId: only ZFS-touching hosts (server, docker) need one
-  # for pool-import safety, and this host does neither.
-
-  # 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";
-}

hosts/tailscale-router/host.nix

@@ -0,0 +1,10 @@
+_:
+
+{
+  networking.hostName = "tailscale-router";
+
+  # No networking.hostId: only ZFS-touching hosts (server, docker) need one
+  # for pool-import safety, and this host does neither.
+
+  system.stateVersion = "26.05";
+}

hosts/tor-relay/host.nix

@@ -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";

modules/build-types/gui.nix

@@ -18,7 +18,7 @@
   ];
 
   boot.loader.grub.useOSProber = true;
-
+programs.direnv.enable = true;
   services = {
     xserver = {
       enable = true;

modules/build-types/server.nix

@@ -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" ];

modules/build-types/tailscale-exit-node.nix

@@ -1,21 +0,0 @@
-{ ... }:
-
-{
-  imports = [
-    ../tailscale/exit-node.nix
-  ];
-
-  # "server", not "both": this build type only ever advertises itself as an
-  # exit node (see ../tailscale/exit-node.nix) -- it doesn't advertise LAN
-  # subnet routes, so it doesn't need the "client"-side loose reverse-path
-  # filtering that "both" would also turn on. Deliberately left unbundled
-  # from LAN-subnet-route advertisement so this build type stays valid on
-  # every platform, including linode (a remote VPS with no network path to
-  # the home LAN at all).
-  services.tailscale.useRoutingFeatures = "server";
-
-  # Forwarded exit-node traffic arrives on tailscale0 already
-  # tailscale-authenticated -- the firewall's normal per-port allow-list
-  # would otherwise drop it. Standard NixOS/Tailscale exit-node guidance.
-  networking.firewall.trustedInterfaces = [ "tailscale0" ];
-}

modules/build-types/tailscale-router.nix

@@ -0,0 +1,19 @@
+{ ... }:
+
+{
+  imports = [
+    ../tailscale/subnet-router.nix
+  ];
+
+  # "server", not "both": this build type advertises LAN subnet routes but
+  # doesn't use another tailscale exit node itself, so it doesn't need the
+  # "client"-side loose reverse-path filtering that "both" would also enable.
+  # Deliberately kept explicit here (not just relying on subnet-router.nix's
+  # own setting) so the intent is clear at the build-type level.
+  services.tailscale.useRoutingFeatures = "server";
+
+  # Forwarded subnet-router traffic arrives on tailscale0 already
+  # tailscale-authenticated -- the firewall's normal per-port allow-list
+  # would otherwise drop it. Standard NixOS/Tailscale subnet-router guidance.
+  networking.firewall.trustedInterfaces = [ "tailscale0" ];
+}

modules/build-types/tor-relay.nix

@@ -3,5 +3,6 @@
 {
   imports = [
     ../tor/enable-relay.nix
+    ../beszel/enable-agent.nix
   ];
 }

modules/common/configuration.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"
     ];
   };
 

modules/nix-cache/client.nix

@@ -3,7 +3,7 @@
 {
   nix.settings = {
     substituters = [
-      "http://${vars.nixCacheHost}"
+      "http://${vars.nixCacheHost}.${vars.homeDomain}"
       "https://cache.nixos.org/"
     ];
     trusted-public-keys = [

modules/nix-cache/remote-builder-client.nix

@@ -8,12 +8,12 @@
   # dedicated keypair). If this host doesn't have one yet:
   #   sudo -u root ssh-keygen -t ed25519 -N '' -f /root/.ssh/id_ed25519
   #   # then add its .pub to vars.remoteBuilderAuthorizedKeys and rebuild nix-cache
-  #   sudo ssh -i /root/.ssh/id_ed25519 nixremote@nix-cache nix-store --version
+  #   sudo ssh -i /root/.ssh/id_ed25519 nixremote@nix-cache.sweet.home nix-store --version
   # Trust nix-cache's SSH host key declaratively so the nix-daemon (root)
   # can connect the first time without a manual ssh-keyscan/known_hosts
   # step on every new client.
-  programs.ssh.knownHosts.${vars.nixCacheHost} = {
-    hostNames = [ vars.nixCacheHost ];
+  programs.ssh.knownHosts."${vars.nixCacheHost}.${vars.homeDomain}" = {
+    hostNames = [ "${vars.nixCacheHost}.${vars.homeDomain}" ];
     publicKey = vars.nixCacheHostKey;
   };
 
@@ -22,7 +22,7 @@
 
     buildMachines = [
       {
-        hostName = vars.nixCacheHost;
+        hostName = "${vars.nixCacheHost}.${vars.homeDomain}";
         sshUser = vars.remoteBuilderUser;
         sshKey = "/root/.ssh/id_ed25519";
         inherit (pkgs.stdenv.hostPlatform) system;

modules/nix-cache/server.nix

@@ -20,7 +20,7 @@
     nginx = {
       enable = true;
       recommendedProxySettings = true;
-      virtualHosts.${vars.nixCacheHost} = {
+      virtualHosts."${vars.nixCacheHost}.${vars.homeDomain}" = {
         locations."/" = {
           proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
         };

modules/platforms/baremetal.nix

@@ -25,4 +25,14 @@
     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;
 }

modules/platforms/lxc.nix

@@ -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

modules/tailscale/exit-node.nix

@@ -1,27 +0,0 @@
-_:
-
-{
-  imports = [ ./enable-service.nix ];
-
-  services.tailscale = {
-    # Enables the sysctl forwarding settings exit nodes/subnet routers need;
-    # without this, --advertise-exit-node has no effect.
-    useRoutingFeatures = "server";
-
-    # Lets peers reach this node directly over the tailscale UDP port
-    # instead of relaying through DERP.
-    openFirewall = true;
-
-    # extraSetFlags (tailscale set, via the always-on tailscaled-set
-    # service), not extraUpFlags -- extraUpFlags is only ever applied by
-    # tailscaled-autoconnect, which itself only runs when
-    # services.tailscale.authKeyFile is set (nothing in this repo sets one,
-    # so tailscale up is a manual, one-time operator step on every host that
-    # uses this service). extraSetFlags has no such gate, so
-    # --advertise-exit-node self-reapplies on every boot once the operator
-    # has authenticated the node once.
-    extraSetFlags = [
-      "--advertise-exit-node"
-    ];
-  };
-}

modules/tailscale/subnet-router.nix

@@ -0,0 +1,15 @@
+_:
+
+{
+  imports = [ ./enable-service.nix ];
+
+  services.tailscale = {
+    # Enables the sysctl forwarding settings subnet routers need;
+    # without this, --advertise-routes has no effect.
+    useRoutingFeatures = "server";
+
+    # Lets peers reach this node directly over the tailscale UDP port
+    # instead of relaying through DERP.
+    openFirewall = true;
+  };
+}

scripts/codex-maintenance.sh

@@ -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
 

scripts/codex-setup.sh

@@ -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:"

scripts/env.sh

@@ -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.).

scripts/installer/auto-install.sh

@@ -1,17 +1,20 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p jq disko nixos-install-tools
+#!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) and `disko`/`nixos-install` (the
-# install itself). Everything disko shells out to internally
-# (parted/sgdisk/mkfs.*/zfs/...) is self-contained -- disko's own
-# generated scripts hardcode absolute Nix store paths for those, they
+# (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) already has all three in
-# environment.systemPackages, so this nix-shell wrapper is a fast no-op
-# there; it's what makes the script also work standalone (e.g. run
-# directly from a checkout on a stock ISO), where they aren't.
+# (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
@@ -162,5 +165,42 @@ nixos-install \
     # /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

scripts/lib/nix-parallel.sh

@@ -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
+}

scripts/proxmox/configure-nix-cache-client.sh

@@ -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
@@ -34,19 +38,30 @@
 set -euo pipefail
 
 : "${NIX_CACHE_HOST:=nix-cache}"
-: "${NIX_CACHE_HOST_KEY:=ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPeWgMsdaiz4axT/deFc1+0B5bN+GX/NOeW9bbQ0c/IT lxc-nix-cache}"
+: "${NIX_CACHE_HOST_KEY:=ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICuHUxGNH6ei3BZD+EfZs3l4X8uJNcjQiOsM/G4yo4O/ lxc-nix-cache}"
 : "${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."

scripts/proxmox/create-proxmox-resource.sh

@@ -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

scripts/recover-hosts.sh

@@ -0,0 +1,253 @@
+#!/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).
+#      To push new keys proactively (before drift, e.g. right after
+#      sync-host-keys.sh --regenerate-all-keys), use instead:
+#        scripts/secrets/push-host-keys.sh --all
+#   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/) -- use push-host-keys.sh proactively next time"
+      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."

scripts/secrets/push-host-keys.sh

@@ -0,0 +1,318 @@
+#!/usr/bin/env bash
+# Pushes newly-generated SSH host keys from host-keys/ to already-running
+# NixOS hosts, so they can decrypt sops secrets after a nixos-rebuild
+# following scripts/secrets/sync-host-keys.sh --regenerate-all-keys.
+#
+# Before pushing any key, verifies that .sops.yaml and secrets/*.yaml are
+# committed and pushed to the remote -- hosts rebuild from the remote Gitea
+# flake, so recipient changes must land there before any rebuild, not just
+# before the key push.
+#
+#   push-host-keys.sh --all [--dry-run] [--skip-git-check]
+#   push-host-keys.sh <target> [--dry-run] [--skip-git-check]
+#
+#   --all              Push to every reachable managed host. Default when no
+#                      target is given.
+#   <target>           Push to one flake target only (e.g. lxc-server).
+#   --dry-run          Print what would be done; write nothing.
+#   --skip-git-check   Skip the commit/push check. Use only when the remote
+#                      already has the current .sops.yaml/secrets/*.yaml.
+#
+# SSH: connects as SSH_USER@<hostname> (default: nixos, the user with the
+# admin authorized key), then installs files via sudo -S (reads the sudo
+# password from stdin). The password is prompted once at startup and reused
+# for every host -- no PTY or terminal required on the remote side.
+# Hosts are reached at their bare hostname (relies on LAN DNS/mDNS).
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "$0")/../.." && pwd)"
+keydir="${repo_root}/host-keys"
+
+# shellcheck source=../env.sh
+source "${repo_root}/scripts/env.sh"
+# shellcheck source=../lib/nix-eval.sh
+source "${repo_root}/scripts/lib/nix-eval.sh"
+
+: "${SSH_USER:=nixos}"
+SSH_OPTS=(-o StrictHostKeyChecking=no -o BatchMode=yes -o ConnectTimeout=5)
+
+dry_run=0
+skip_git_check=0
+sudo_password=""
+
+usage() {
+  cat <<EOF
+Usage: $0 [--all | <target>] [--dry-run] [--skip-git-check]
+
+  --all              Push to every reachable managed host. Default when no
+                     target is given.
+  <target>           Push to one flake target only (e.g. lxc-server).
+  --dry-run          Print what would be done; write nothing.
+  --skip-git-check   Skip the check that .sops.yaml/secrets/*.yaml are
+                     committed and pushed to the remote repo.
+
+Environment:
+  SSH_USER           SSH username (default: nixos).
+  SUDO_PASS          Sudo password (skips the interactive prompt; useful
+                     when calling from another script).
+EOF
+}
+
+# Prompt for the sudo password once; store it for all _do_push calls.
+# Accepts SUDO_PASS from the environment to allow non-interactive callers.
+prompt_sudo_password() {
+  [[ "$dry_run" -eq 1 ]] && return
+  if [[ -n "${SUDO_PASS:-}" ]]; then
+    sudo_password="$SUDO_PASS"
+    return
+  fi
+  # read exits non-zero when stdin is not a terminal (e.g. CI, background
+  # agents). Catch that and give a clear message rather than a silent exit.
+  if ! read -r -s -p "sudo password for ${SSH_USER} on remote hosts: " sudo_password; then
+    echo >&2
+    echo "ERROR: stdin is not a terminal -- cannot prompt for sudo password." >&2
+    echo "       Set SUDO_PASS=<password> in the environment and re-run." >&2
+    exit 1
+  fi
+  echo >&2
+}
+
+locally_managed_hosts() {
+  for f in "${keydir}"/*_ssh_host_ed25519_key.pub; do
+    [[ -e "$f" ]] || continue
+    basename "$f" _ssh_host_ed25519_key.pub
+  done
+}
+
+# --- git state check/fix --------------------------------------------------
+# Hosts rebuild from the remote Gitea flake:
+#   nixos-rebuild switch --flake "git+https://<gitea>/nixos.git#<target>"
+# so .sops.yaml (updated recipients) and secrets/*.yaml (re-encrypted DEKs)
+# must be committed and pushed before any rebuild can succeed. This check
+# catches the common case where --regenerate-all-keys was just run but the
+# resulting diff hasn't been committed/pushed yet.
+ensure_remote_current() {
+  [[ "$skip_git_check" -eq 1 ]] && return
+
+  cd "$repo_root"
+
+  local dirty_unstaged dirty_staged
+  dirty_unstaged="$(git diff --name-only -- .sops.yaml secrets/ 2>/dev/null || true)"
+  dirty_staged="$(git diff --cached --name-only -- .sops.yaml secrets/ 2>/dev/null || true)"
+
+  if [[ -n "$dirty_unstaged" || -n "$dirty_staged" ]]; then
+    echo "Uncommitted changes in sops-managed files:"
+    [[ -n "$dirty_unstaged" ]] && sed 's/^/  (unstaged) /' <<<"$dirty_unstaged"
+    [[ -n "$dirty_staged"   ]] && sed 's/^/  (staged)   /' <<<"$dirty_staged"
+    echo
+    if [[ "$dry_run" -eq 1 ]]; then
+      echo "[dry-run] would prompt to commit .sops.yaml/secrets/ before continuing."
+    else
+      read -rp "Commit .sops.yaml + secrets/ now? [y/N]: " ans
+      if [[ "$ans" =~ ^[Yy]$ ]]; then
+        git add -- .sops.yaml secrets/
+        git commit -m "secrets: update recipients and re-encrypt for host key changes"
+        echo "Committed."
+      else
+        echo "Continuing with uncommitted changes -- the remote won't have the"
+        echo "updated recipients until you commit and push."
+      fi
+    fi
+    echo
+  fi
+
+  # Check if we're ahead of the remote tracking branch
+  local ahead
+  ahead="$(git rev-list --count '@{upstream}..HEAD' 2>/dev/null || echo "")"
+  if [[ -z "$ahead" ]]; then
+    echo "NOTE: no remote tracking branch found -- skipping push check."
+    echo "      Ensure the remote has the current .sops.yaml/secrets/ before"
+    echo "      triggering nixos-rebuild on any host."
+    echo
+    return
+  fi
+
+  if [[ "$ahead" -gt 0 ]]; then
+    echo "Local branch is ${ahead} commit(s) ahead of remote."
+    if [[ "$dry_run" -eq 1 ]]; then
+      echo "[dry-run] would prompt to push before continuing."
+    else
+      read -rp "Push to remote now? [y/N]: " ans
+      if [[ "$ans" =~ ^[Yy]$ ]]; then
+        git push
+        echo "Pushed."
+      else
+        echo "Continuing without pushing -- remember to push before running"
+        echo "nixos-rebuild on any of these hosts."
+      fi
+    fi
+    echo
+  fi
+}
+
+# --- key installation (shared) -------------------------------------------
+_do_push() {
+  local hostname="$1" target="$2"
+  local keyfile="${keydir}/${target}_ssh_host_ed25519_key"
+  local pubfile="${keyfile}.pub"
+
+  if [[ "$dry_run" -eq 1 ]]; then
+    echo "  [dry-run] would scp host-keys/${target}_ssh_host_ed25519_key{,.pub} to /tmp/"
+    echo "  [dry-run] would: sudo -S install -m 0600/0644 to /etc/ssh/ and rm /tmp copies"
+    return
+  fi
+
+  # Upload to /tmp (writable as nixos, no privilege needed)
+  scp -o StrictHostKeyChecking=no \
+    "$keyfile" "${SSH_USER}@${hostname}:/tmp/push_ed25519_key"
+  scp -o StrictHostKeyChecking=no \
+    "$pubfile" "${SSH_USER}@${hostname}:/tmp/push_ed25519_key.pub"
+
+  # Install via sudo -S: the password is piped via herestring so no PTY is
+  # needed on either side. -p '' suppresses sudo's own prompt string.
+  ssh -o StrictHostKeyChecking=no "${SSH_USER}@${hostname}" \
+    "sudo -S -p '' bash -c '
+      install -m 0600 /tmp/push_ed25519_key     /etc/ssh/ssh_host_ed25519_key
+      install -m 0644 /tmp/push_ed25519_key.pub /etc/ssh/ssh_host_ed25519_key.pub
+      rm -f /tmp/push_ed25519_key /tmp/push_ed25519_key.pub
+      echo \"  [ok] host key installed\"
+    '" <<< "$sudo_password"
+
+  # Drop the stale known_hosts entry for this host (public key just changed)
+  ssh-keygen -R "$hostname" 2>/dev/null || true
+
+  echo "  Done. Run nixos-rebuild switch on ${hostname} to activate."
+}
+
+# --- single named target --------------------------------------------------
+push_target() {
+  local target="$1"
+  local keyfile="${keydir}/${target}_ssh_host_ed25519_key"
+
+  if [[ ! -f "$keyfile" ]]; then
+    echo "ERROR: host-keys/${target}_ssh_host_ed25519_key not found." >&2
+    echo "       This target may not be locally managed (e.g. &${target} was" >&2
+    echo "       registered from the host's real SSH key, not generated here)." >&2
+    exit 1
+  fi
+
+  local hostname
+  hostname="$(flake_target_hostname "$repo_root" "$target")"
+  if [[ -z "$hostname" ]]; then
+    echo "ERROR: cannot resolve hostname for '${target}' from the flake." >&2
+    exit 1
+  fi
+
+  echo "==> ${target} (→ ${hostname})"
+
+  if ! ssh "${SSH_OPTS[@]}" "${SSH_USER}@${hostname}" true 2>/dev/null; then
+    echo "  SKIP: ${SSH_USER}@${hostname} unreachable."
+    return
+  fi
+
+  # Sanity-check that /etc/flake-target on the host agrees
+  local live_target
+  live_target="$(ssh "${SSH_OPTS[@]}" "${SSH_USER}@${hostname}" \
+    "cat /etc/flake-target 2>/dev/null || true")"
+  if [[ -n "$live_target" && "$live_target" != "$target" ]]; then
+    echo "  WARN: host reports /etc/flake-target='${live_target}', not '${target}'."
+    echo "       Pushing the key you specified (${target}) anyway."
+  fi
+
+  _do_push "$hostname" "$target"
+}
+
+# --- all managed hosts ----------------------------------------------------
+# For each unique hostname derived from managed targets, SSHes in and reads
+# /etc/flake-target to determine which key to push -- handles the case where
+# multiple targets share a hostname (e.g. lxc-server and proxmox-server both
+# resolve to "server"; only one is actually running).
+push_all() {
+  mapfile -t managed < <(locally_managed_hosts)
+  if [[ "${#managed[@]}" -eq 0 ]]; then
+    echo "No managed keys in host-keys/ -- nothing to push."
+    return
+  fi
+
+  echo "Pushing to all reachable managed hosts..."
+  echo
+
+  declare -A seen_hostnames=()
+  local t hostname
+  for t in "${managed[@]}"; do
+    hostname="$(flake_target_hostname "$repo_root" "$t" 2>/dev/null || true)"
+    [[ -z "$hostname" ]] && continue
+    [[ -n "${seen_hostnames[$hostname]+x}" ]] && continue
+    seen_hostnames["$hostname"]=1
+
+    echo "==> checking ${hostname}"
+
+    if ! ssh "${SSH_OPTS[@]}" "${SSH_USER}@${hostname}" true 2>/dev/null; then
+      echo "  SKIP: ${SSH_USER}@${hostname} unreachable."
+      continue
+    fi
+
+    # Ask the host which flake target it actually is
+    local live_target
+    live_target="$(ssh "${SSH_OPTS[@]}" "${SSH_USER}@${hostname}" \
+      "cat /etc/flake-target 2>/dev/null || true")"
+
+    if [[ -z "$live_target" ]]; then
+      echo "  SKIP: no /etc/flake-target on host -- can't determine which key to push."
+      continue
+    fi
+
+    local live_keyfile="${keydir}/${live_target}_ssh_host_ed25519_key"
+    if [[ ! -f "$live_keyfile" ]]; then
+      echo "  SKIP: host is '${live_target}' but no host-keys/${live_target}_... (hand-registered key, not managed here)."
+      continue
+    fi
+
+    echo "  target: ${live_target}"
+    _do_push "$hostname" "$live_target"
+  done
+}
+
+# --- main -----------------------------------------------------------------
+mode="all"
+target_arg=""
+extra_args=()
+
+for arg in "$@"; do
+  case "$arg" in
+    --dry-run)        dry_run=1 ;;
+    --skip-git-check) skip_git_check=1 ;;
+    --all)            mode="all" ;;
+    -h|--help)        usage; exit 0 ;;
+    --*)              echo "Unknown option: $arg" >&2; usage >&2; exit 1 ;;
+    *)                extra_args+=("$arg") ;;
+  esac
+done
+
+if [[ "${#extra_args[@]}" -gt 1 ]]; then
+  echo "ERROR: specify at most one target (or --all)." >&2
+  usage >&2; exit 1
+elif [[ "${#extra_args[@]}" -eq 1 ]]; then
+  mode="single"
+  target_arg="${extra_args[0]}"
+fi
+
+[[ "$dry_run" -eq 1 ]] && { echo "[dry-run] no changes will be made"; echo; }
+
+nix_extra_opts
+ensure_remote_current
+prompt_sudo_password
+
+if [[ "$mode" == "single" ]]; then
+  push_target "$target_arg"
+else
+  push_all
+fi
+
+echo
+if [[ "$dry_run" -eq 1 ]]; then
+  echo "[dry-run] Nothing was changed. Re-run without --dry-run to apply."
+else
+  echo "Key push complete. For each updated host, run nixos-rebuild switch to"
+  echo "apply the config and let sops-nix decrypt secrets with the new key."
+fi

scripts/secrets/sync-host-keys.sh

@@ -359,8 +359,11 @@ cmd_regenerate_all() {
   echo "This will remove and freshly regenerate ALL locally-managed keys:"
   printf '  %s\n' "${hosts[@]}"
   echo
-  echo "Every host above will need its new key baked into a rebuilt install"
-  echo "image/tarball before it can decrypt secrets again."
+  echo "After regenerating, each host needs its new key before it can decrypt secrets:"
+  echo "  • Already running: push the key before rebuilding:"
+  echo "      scripts/secrets/push-host-keys.sh --all"
+  echo "  • Not yet deployed: rebuild the install image with the new keys baked in"
+  echo "      (see docs/auto-installer.md)."
 
   if [[ "$dry_run" -ne 1 ]]; then
     if ! confirm_typed "REGENERATE" "Type REGENERATE to confirm: "; then
@@ -397,6 +400,16 @@ cmd_regenerate_all() {
   echo
   echo "Regenerating fresh keys for every current flake target..."
   cmd_all
+
+  echo
+  echo "Next steps:"
+  echo "  1. Commit and push .sops.yaml + secrets/ so the remote flake is current."
+  echo "  2. Push the new host key to each already-running managed host:"
+  echo "       scripts/secrets/push-host-keys.sh --all"
+  echo "     (this also prompts to commit/push if step 1 wasn't done yet)"
+  echo "  3. Run nixos-rebuild switch on each updated host."
+  echo "  4. For hosts not yet deployed, rebuild the install image (see"
+  echo "     docs/auto-installer.md)."
 }
 
 main() {

secrets/common.yaml

@@ -1,135 +1,252 @@
 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: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBIakJkWDQ2TjVIS1Q1UlRJ
-            elVLNmhEVUpMNjROWmN6VC8wTnZzeWhLb0hFCmxmTXp3ZVdQMUhDeGlscThSdFhP
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-            W1KevMq/Klnkjb9XDuTEx7zgrjILoViVspe6eGI14myBNYtAP4nLSA==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBibGF2a2FRcTRFTk9rQ0NN
+            TTFoRlBWbGdSMzVVRHYvVFFvVm05ZDZBb1VrCkFoM2dTMEJDMHRKd240OEExWnUv
+            RHV2S0taWnl0dS80YVIvTjBpVEk5a0kKLS0tIGF2TkNQdlVJTTNOSnI4cEZCRll3
+            NE9aSWxVVTlyV2hPQ284cU94Y2hVNEkKhUFgr345o91orzqCzkKdh6dAXlPfwqTJ
+            su5kATsokLzcyvT/gcOKsDBzO219CJ0cSVmpgVJtImSCJDwUS3A6Ug==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBUWXYyUG5UdHdFa2NDZmtt
-            ZG1GSmxVbTg5Qnh4UGxJaitmTmFqK2J1cUV3CmdPSU5GTC9hWkROTkJzMk5Tcmpw
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-            h2KauyebWPyBe8hsCExiPd45ZGqKF0g8pEtWUzonMq9NU/MNVL8YVQ==
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+            ZiOkWewH/JOuIXR260UWAGq4bKXfnUs78mAchh9R2I0F4p/CjGMdQA==
             -----END AGE ENCRYPTED FILE-----
           recipient: age19gfn2yedg76dmztm4hncr7vf3r3c9j0qpt4rap7y7gersjk4m3ks2lhd0e
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBXdnpGR2ZnaFRSUUNlOUVy
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+            BMC6FtUVYMkP++Y7KFR6sudMemf9f+FbsCVRqBd9x+c2YzzgyH8ogw==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1ll6hj5ggruetgjwjfnplpn5xtq35uhlcdflksx3xmnjm6s3uad9sz70jkf
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSArNHZpMDV5a2JCN1NxY2hF
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             -----END AGE ENCRYPTED FILE-----
           recipient: age120le4a5l8dh3lyfgvmj3d9ksmej6ajs5mer5y7r0vfg3x9fn69dqf8xgzu
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBOUlp5MmcvSFRnaVdWZ1g0
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-            jgxraiFmaZqjDI5mxG/e7eFdXfv53AtKzZm92TlzvV+4bfidj5SvYw==
-            -----END AGE ENCRYPTED FILE-----
-          recipient: age1jy444f9d9stygj4p3w9kh54cqcfr654tvr75tdvee5cxsgtdtc9q3v60ep
-        - enc: |
-            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBCWTdCWHhTamI1VHpvUzZ3
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-            itFkXJRnvUmkCxWYRDFJjQ6FpHHaNDqs0BlQZ5QZ+chzcKuUAG+uEg==
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+            bEVlNURjeGRvdXkrS0N1eDllV3lJTGsKc/4cEEhEJwmLSxUDFzAMxD+7TWcOKNjD
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+          recipient: age1ug787sgt6st6k82fgkrug2lzltw4qsukrrqqs3w27ewwqj8rg4hsxcmylz
+        - enc: |
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+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1zhfyuzlq40reuqlr34gf77852nhs3t6mqfzrqmas8z6sxk7tcfhsungrm0
+    lastmodified: "2026-07-23T21:15:41Z"
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-    version: 3.13.1
+    version: 3.13.2

secrets/gui.yaml

@@ -3,31 +3,49 @@ sops:
     age:
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         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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           recipient: age190htw7prp4vln076dxjx3gxxaq06h0zl0te7cqgpx79vl3lhkaes8suy05
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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-          recipient: age1ehkswwz2pqaz4svzh7ela5tdnssl8kn6d4vwwxd6zwg8exfpd43syyrrjp
+          recipient: age1adur9g330gua4l6ndk8cqjg35qc8yxwgme6wrl2hpylcc7vxm38q05ejuy
+        - enc: |
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+          recipient: age1hrx8qj02fj2ea6d4g9vqhyj9hl7fppkjqfdx2l37py3h6pdkr95s8n8rvs
+        - enc: |
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     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]
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secrets/nix-cache.yaml

@@ -4,31 +4,49 @@ sops:
     age:
         - enc: |
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           recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
         - enc: |
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           recipient: age120le4a5l8dh3lyfgvmj3d9ksmej6ajs5mer5y7r0vfg3x9fn69dqf8xgzu
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
-          recipient: age1xjst4frdh0th6q8m7p7u9g5af7ty5jqeum0p6z8a52a9q7st7ewqw8yl9j
+          recipient: age1jcx3yajjhghn8qh8za3yeu8nxykzlg3p4nrv03vnfvzl0mzayg2qmg940e
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+          recipient: age1ufg390ydrmma849t9xfkxxl5xvdkk6mngnlzhmy7mvuaje8sgcmsmnq6l7
+        - enc: |
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     lastmodified: "2026-07-19T23:30:21Z"
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     unencrypted_suffix: _unencrypted

secrets/server.yaml

@@ -3,40 +3,49 @@ sops:
     age:
         - enc: |
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+            eEcrOXdFaUNBQ3g2aytYM3RwM1dBd00KiSRrzv6eRMdIzZaUlC6JmsZV6rYJgrre
+            vbI1KHtNZKetx81+MmElIKog6kMtTPtI7MVpMwCCPO8zAU5Uh7jSoQ==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB4YndybFBTQ2p4SGZ4SDJs
-            a2p0eFRQOVVWcGd2a25ESW9ESGx1RWw0Zno4CnhpVVh3cGI5UjY0YmFINFFPMTh4
-            b1B5SjJ3NTNvUE1QUmJjVFozY1dYS2MKLS0tIC9HZGNpOFZhZGNFZGt5blJuZXVV
-            SXpkRzV4d2ppV3ZQZSt1dmxYNGVFMUEKmSe9dkrmkND81Hw2/ATAmFvcmhk1tUC1
-            LxxBw54IVHUqwYKgRYUYRNu+pykDT5OnFDPiskd49Xso99LY87PyiA==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBmWUMyVGpua25ZZ1FRZ21p
+            a1lxdS85d2JzOXBLVC92MjlNbTZOOVgvSlhNCm12WmtIb3dQanNkanBCU2t4VTd2
+            TGFidEpSR254Qm5jTVF0WnprcjJWVncKLS0tIGwzRWZkY25rZXE4Q2VETU93Mno3
+            aGN6MmcvVkRGZkJQN3V1ak90T3BMVFEKLcEdqKQ3SStSdH5vjQ6RH+oA10OLGXad
+            TZE0h435sg/tq/Rff+KWngczFRuq7Yg0KYph8bNAKy6uf+RceZ8Ngg==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1ll6hj5ggruetgjwjfnplpn5xtq35uhlcdflksx3xmnjm6s3uad9sz70jkf
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBLd1FSSHVTSGdHWm8wMVQz
-            d0dlOEsxeGwxdHU0eUlFSUxka0ZmcVpnOTM0CndYNUVjVy92QVhNY2orQmpSQjYy
-            VS9KM0NUTXhuM0lCSDBZMWtISEdtWTgKLS0tIExTL2wvS3FEdVViUmRYZEFsR3R0
-            YTJFM200RjF6MjNxOFA4eHRpWVhtRkUKOqBIT445HnPXrrH/qV6FIuAhAuJmSL6V
-            +PQopM/m3PAnK5m5Mu3cfjYfDiB8+GWTABhljfT+GbcoK7CqWLehrw==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBSMG12OTVwdFhnTkFrNmZl
+            UDFLcmJtL2FNejJnWlZYd093MlZmWG04dmdJCkhGLzNGcVQyVVp6SGdISTF0ejhv
+            OVRoQXNlSWZCWDdDMTM0YTFJYlRQd2cKLS0tIHJxVDVscUxEdTV1MGhNVlpWVS8v
+            aWhSNDh1NEZHYzRHeXZNOFRuRzBjazAK2RMK5ylm4uM55fXgrRrY+GeN86ym9wC9
+            JNDcNyxE6H/sZGBZJbFLWKDj+VM9X86j5TFFpnjSrKi2CPOzmzgmKw==
             -----END AGE ENCRYPTED FILE-----
-          recipient: age1ukpqxzl44mnjpy5r96sfuc5sqzm47u4k8ujjh5qdgy6jvl9uqgpspymqfk
+          recipient: age1sweerhrga9yf8x6sv0apz4ed4g48rnlcq34rpv20t0rcelwgpgeqwvndzz
         - enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAvVXF4a2NmaW15R2VXS3FP
-            SDVPUGpUWTlIWjl2N2N2SXR1UlRkdllWNVRJClZDbVo4dUhrZytqZkMrYWtpOEZx
-            c0dSZGViN04zQ1B1WEZEWm1QM1lsejQKLS0tIE0wa0k5Rm1xZmw3OHFESkVXc25j
-            NlFpYTJSckQ4MVlZQ01reDlkaWY3TkEKsmQlreRhRAjVZ/q5x52FNATDF2sLhbHo
-            djOZigZx2rs6shqQ6It/XRJ8CiPaXZBPOt529Gwmplu+hWlAU1+l2Q==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBLRHdnSkFZc0NYYnQvd0Mz
+            a3dmTHdLN3Z6UGh3SkpBMGhtSHRJTC9SblJnCmFuOTJGSE5nOWIwQWRNV010RkMw
+            VnBJVXdtVm1tL2d2bXFWWnBtamVRVk0KLS0tIDNHUndvTnd2Z2VSb3dxVUFUcTcz
+            ODVDRzBBclhPZjJDYVkwWktMUENSek0KnTFdNMa8L5uPLvl2aJLvaZEUTbGwL+va
+            wLnWhf/bm8edMeyfWcpS2uHMSDpozWfqObrrP23LCrDBf/B7EG+TWw==
             -----END AGE ENCRYPTED FILE-----
-          recipient: age15kh7akxlx7zn00tey79rq2g8lgs4j5y77rcnyfxrxap8ckfu0a9sqvtdhh
+          recipient: age1nruncs4l0ufk7yuc4des8p99c0alfndl0lhsws8tycl5pplfp56s30af5f
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAyeTJMS1A0eXJnQVcvaVEy
+            VEttdGdMcVIzNlIvclZESkJoTHBZeW1GUVFBCmhmRlBLN3lLdW9TS1JKOW83Yis4
+            dVBGNjdPZXdGYllzN0VyRGFVRFFCMU0KLS0tIEZqN1ljQ0s3TDJYWEEwWk1YVmFs
+            R1l1LzdHUDVvUHQwY1NtZUUxajZkZUkKZv1ejN+LKZqFqDRak5ktFaR3kMPCQeFl
+            q8/DHLFx+1IFChxMGkgstGGmkZdxG4khpYJJXAVNyQsyIW9bjJiqZQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1529taqdwr6t0w7cvzmty0d5y5593wffl0krt48j6uc4u39k56g2qf6ywtp
     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

secrets/tor-relay.yaml

@@ -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+IFgyNTUxOSBJL25EUUZack1FMzlnMmdk
+            Z1hnejZRNnMwVHpmWkFNdGcyeHVsNnRsSGtZCk9OdDhhcnR1WW9ZMEZ1OUVYbm1n
+            RmZRVy8wb1J3emJBK3Rrd1d4U1dYUDAKLS0tIGJaaElvSk1sOTBOM0lKck16OUtu
+            NnRZb3U0ZndmaHBZTm8zczhWdE1oaEUKkf6fLomAHoKPhuM4e9q96YmmH+h4VrEj
+            2x0rnwBwOoRzYWutB2MVtlsphAZmZ/PK0tEecT2MM0XXayVG/33qdg==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBpeEJvaHl4akc1TFdEVGV2
+            czg3OVprU3p4ejNpTktXZEpneDgrOEhrZGlZCmJwT1dhSkZneHE5UmR0WTd5UENq
+            VHJEWG1EekJLY2pRZldtVGtxTHlGaGMKLS0tIEYrWHE0WTgyUlIwdktmNzNIS3FW
+            ZVRvT1dHa1Vzc2RSakVISzdMTlpnVGsKeT+edn4+LUkVtpRUNd/gKX3H1HG2bvNo
+            c8iI6qr/l6oxfP85OrKYFDU9IGvDMxSSdbixHtojPEb5OKVurV0WPQ==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age16kqfmvz4e23hmdlqresnyw69ej604s320mmd49h4hm3fhqchtgyqrws0k2
+    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

variables.nix

@@ -26,7 +26,7 @@
   # fresh client that has never manually ssh'd to nix-cache before. Update
   # this if nix-cache's host key is ever rotated or the host is rebuilt
   # from scratch.
-  nixCacheHostKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPeWgMsdaiz4axT/deFc1+0B5bN+GX/NOeW9bbQ0c/IT lxc-nix-cache";
+  nixCacheHostKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICuHUxGNH6ei3BZD+EfZs3l4X8uJNcjQiOsM/G4yo4O/ lxc-nix-cache";
 
   # Public keys authorized to SSH in as remoteBuilderUser on the nix-cache
   # host (modules/nix-cache/server.nix) — one per client host that's allowed