uConsole: remove clamav (cross-compile failure — cmake try_run + Rust proc-macro linker)

- New module at modules/nixos/services/clamav.nix
- Options: enable (CLI-only), enableDaemon (full services),
  onAccessScanning (clamonacc), scanPaths, dailyScanTime
- All scans are logging-only — no auto-quarantine or deletion
- uConsole: CLI tools only (enableDaemon=false)
- lazyworkhorse: full setup with on-access scanning, daily 3 AM scan

Also: remove neovim from uConsole (fails cross-compile, emacs available)

flake.lock

@@ -23,6 +23,30 @@
         "type": "github"
       }
     },
+    "agenix-rekey": {
+      "inputs": {
+        "devshell": "devshell",
+        "flake-parts": "flake-parts",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "pre-commit-hooks": "pre-commit-hooks",
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1774522439,
+        "narHash": "sha256-GvINrdGznE7mGlDNjW0/PMgOJlC+Nl9MkfxALB4QvWs=",
+        "owner": "oddlama",
+        "repo": "agenix-rekey",
+        "rev": "8b9c179bc1300ab130c90f2d25426bf0e7a2b58d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oddlama",
+        "repo": "agenix-rekey",
+        "type": "github"
+      }
+    },
     "argononed": {
       "flake": false,
       "locked": {
@@ -39,7 +63,44 @@
         "type": "github"
       }
     },
+    "devshell": {
+      "inputs": {
+        "nixpkgs": [
+          "agenix-rekey",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1728330715,
+        "narHash": "sha256-xRJ2nPOXb//u1jaBnDP56M7v5ldavjbtR6lfGqSvcKg=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "dd6b80932022cea34a019e2bb32f6fa9e494dfef",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
     "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_2": {
       "flake": false,
       "locked": {
         "lastModified": 1751685974,
@@ -53,7 +114,7 @@
         "url": "https://git.lix.systems/lix-project/flake-compat/archive/main.tar.gz"
       }
     },
-    "flake-compat_2": {
+    "flake-compat_3": {
       "locked": {
         "lastModified": 1767039857,
         "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
@@ -68,6 +129,49 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "agenix-rekey",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1733312601,
+        "narHash": "sha256-4pDvzqnegAfRkPwO3wmwBhVi/Sye1mzps0zHWYnP88c=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "205b12d8b7cd4802fbcb8e8ef6a0f1408781a4f9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "agenix-rekey",
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -112,14 +216,14 @@
     },
     "lix": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "nix2container": "nix2container",
         "nix_2_18": "nix_2_18",
         "nixpkgs": [
           "nixpkgs"
         ],
         "nixpkgs-regression": "nixpkgs-regression",
-        "pre-commit-hooks": "pre-commit-hooks"
+        "pre-commit-hooks": "pre-commit-hooks_2"
       },
       "locked": {
         "lastModified": 1774721317,
@@ -225,7 +329,7 @@
     "nixos-raspberrypi": {
       "inputs": {
         "argononed": "argononed",
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "nixos-images": "nixos-images",
         "nixpkgs": [
           "nixpkgs-uconsole"
@@ -335,6 +439,29 @@
       }
     },
     "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "agenix-rekey",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1735882644,
+        "narHash": "sha256-3FZAG+pGt3OElQjesCAWeMkQ7C/nB1oTHLRQ8ceP110=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "a5a961387e75ae44cc20f0a57ae463da5e959656",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks_2": {
       "flake": false,
       "locked": {
         "lastModified": 1769939035,
@@ -353,6 +480,7 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
+        "agenix-rekey": "agenix-rekey",
         "home-manager": "home-manager_2",
         "lix": "lix",
         "nixos-raspberrypi": "nixos-raspberrypi",
@@ -375,6 +503,27 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "agenix-rekey",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1735135567,
+        "narHash": "sha256-8T3K5amndEavxnludPyfj3Z1IkcFdRpR23q+T0BVeZE=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "9e09d30a644c57257715902efbb3adc56c79cf28",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -8,6 +8,10 @@
       inputs.darwin.follows = "";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    agenix-rekey = {
+      url = "github:oddlama/agenix-rekey";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     lix = {
       url = "git+https://git.lix.systems/lix-project/lix?ref=main";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -28,7 +32,7 @@
     };
   };
 
-  outputs = { self, nixpkgs, agenix, lix
+  outputs = { self, nixpkgs, agenix, agenix-rekey, lix
             , nixpkgs-uconsole, nixos-uconsole, nixos-raspberrypi
             , home-manager
             , ... }@inputs:
@@ -42,7 +46,7 @@
           "/etc/ssh/ssh_host_ed25519_key"
           "/root/.age/bootstrap.key" ];
       };
-      overlays = [ agenix.overlays.default ];
+      overlays = [ agenix.overlays.default (import ./overlays/reticulum.nix) ];
       pkgs = import nixpkgs {
         inherit system overlays;
         config.allowUnfree = true;
@@ -52,7 +56,108 @@
         inherit pkgs system agenix;
       };
 
-      # Cross-compile overlay fixes for Hyprland and deps on aarch64
+       ##############################################################################
+      # CROSS-COMPILE WORKAROUNDS — packages that fail aarch64 cross-compile
+      #
+      # These packages need NATIVE COMPILATION on the uConsole itself (aarch64).
+      # They cannot cross-compile from x86_64 for various reasons listed below.
+      # We work around them in the overlay until we set up distributed builds
+      # with the uConsole as a native aarch64 builder.
+      #
+      # ==== Cross-compile failures ====
+      #
+      # libcamera / libcamera-rpi / libpisp:
+      #   meta.platforms excludes aarch64. pipewire hard-depends on them in nixos-25.11.
+      #   Fix: empty meta.platforms + strip from pipewire buildInputs.
+      #
+      # gjs:
+      #   Need native display (GTK3/4 tests) for cross-compile configure.
+      #   Fix: meson -Dskip_gtk_tests=true.
+      #
+      # hyprland:
+      #   Qt6Quick missing from aarch64 qtdeclarative, breaks hyprland-qt-support.
+      #   Fix: wrapRuntimeDeps=false (Qt UI components disabled, WM still works).
+      #
+      # boost.mpi:
+      #   Boost.Build has no b2 architecture alternatives for ARM.
+      #   Fix: useMpi=false.
+      #
+      # perl-ldap (perlPackages.perlldap):
+      #   Module::Install requires Perl dynamic loading (Fcntl) which is
+      #   unavailable in cross-compiled Perl.
+      #   Fix: stripped from john.s propagatedBuildInputs.
+      #
+      # john (John the Ripper):
+      #   Indirectly affected — depends on perl-ldap for perl utility scripts.
+      #   Fix: perl-ldap stripped from propagatedBuildInputs (john still works,
+      #   just loses sha-dump.pl etc. LDAP support).
+      #
+      # gss (GNU Generic Security Service):
+      #   autogen.sh fails cross-compile. Pulled by mailutils → emacs-pgtk.
+      #   Fix: emacs withMailutils=false.
+      #
+      # emacs-pgtk:
+      #   Indirectly affected — depends on mailutils which depends on gss.
+      #   Fix: withMailutils=false (no mail/IMAP within emacs).
+      #
+      # qtquick3d (Qt6):
+      #   Qt::Quick not available in aarch64 cross-compile qtdeclarative.
+      #   cmake skips build, ninja has no install target.
+      #   Fix: removed js8call, switched wireshark → wireshark-cli.
+      #
+      # js8call:
+      #   REMOVED from system packages. Depends on Qt6 multimedia → qtquick3d.
+      #
+      # wireshark-qt:
+      #   SWITCHED to wireshark-cli. Same Qt6 multimedia → qtquick3d chain.
+      #
+# neovim:
+#   `libnlua0.so` built for aarch64, luajit (x86_64) tries to load it
+#   during codegen (preload_nlua.lua). No clean override option.
+#   Fix: remove from system packages + install via native build
+#   once uConsole is set up as remote builder.
+#
+# clamav:
+#   cmake try_run() + Rust proc-macro can't find native linker in
+#   cross-compile (cc crate uses cross CC, no cc in PATH for build
+#   scripts). Chain: clamav → system-path → etc → dbus → polkit.
+#   Fix: remove from system packages; clamscan available from server.
+
+#
+# ==== Remote builder setup (bidirectional) — TODO ====
+# To eliminate cross-compile exceptions, set up distributed builds:
+# 1. Create a dedicated `builder` user on both hosts (no shell, home=/var/empty)
+# 2. Add the same SSH key to both hosts (symmetric)
+# 3. On lazyworkhorse — `nix.buildMachines` pointing to uConsole for aarch64-linux
+# 4. On uConsole — `nix.buildMachines` pointing to lazyworkhorse for x86_64-linux
+# 5. Remove the uconsoleCrossOverlay workarounds above
+# 6. Nix auto-dispatches derivations by `system` — no per-package exceptions needed
+# Example buildMachines config:
+# Server dispatches aarch64 builds to uConsole (4 cores, less power):
+#   nix.buildMachines = [{
+#     hostName = "uConsole.local";
+#     systems = ["aarch64-linux"];
+#     maxJobs = 4;
+#     sshUser = "builder";
+#     sshKey = "/etc/ssh/builder_key";
+#   }];
+# uConsole dispatches x86_64 builds to server (36 cores, 256GB RAM):
+#   nix.buildMachines = [{
+#     hostName = "lazyworkhorse.net";
+#     port = 2424;
+#     systems = ["x86_64-linux"];
+#     maxJobs = 36;
+#     sshUser = "builder";
+#     sshKey = "/etc/ssh/builder_key";
+#   }];
+
+      # ==== How to build natively on uConsole ====
+      # To native-compile these on the uConsole:
+      # 1. Add uConsole as a remote builder (nix.buildMachines)
+      # 2. Set nix.extra-platforms = [ "aarch64-linux" ] on server
+      # 3. Remove the overlay workarounds below
+      # 4. Packages will auto-dispatch to uConsole for native builds
+      ##############################################################################
       uconsoleCrossOverlay = final: prev: {
         libcamera = prev.libcamera.overrideAttrs (_: { meta.platforms = []; });
         libcamera-rpi = prev.libcamera-rpi.overrideAttrs (_: { meta.platforms = []; });
@@ -69,15 +174,25 @@
           mesonFlags = (old.mesonFlags or []) ++ [ "-Dskip_gtk_tests=true" ];
         });
         hyprland = prev.hyprland.override { wrapRuntimeDeps = false; };
+        boost = prev.boost.override { useMpi = false; };
+        # perl-ldap cannot cross-compile (Module::Install needs dynamic loading)
         xdg-desktop-portal-hyprland = prev.xdg-desktop-portal-hyprland.overrideAttrs (old: {
           preConfigure = (old.preConfigure or "") + ''
             cmakeFlags="$cmakeFlags -Dhyprwayland-scanner_DIR=${prev.buildPackages.hyprwayland-scanner}/lib/cmake/hyprwayland-scanner" 2>/dev/null || true
             export PKG_CONFIG_PATH="${prev.buildPackages.hyprwayland-scanner}/lib/pkgconfig:$PKG_CONFIG_PATH"
           '';
         });
+        emacs-pgtk = prev.emacs-pgtk.override { withMailutils = false; };
+        # perl-ldap fails cross-compile (Module::Install needs dynamic loading)
+        # Strip it from john deps -- the perl scripts that need it are not critical
+        john = prev.john.overrideAttrs (old: {
+          propagatedBuildInputs = builtins.filter
+            (x: x?pname && x.pname != "perl-ldap")
+            (old.propagatedBuildInputs or []);
+        });
+        # clamav: removed from system packages (see note above).
       };
 
-      # RPI-specific pipewire libcamera fix (separate nixpkgs instance)
       uconsoleRpiPipewireOverlay = final: prev: {
         pipewire = prev.pipewire.overrideAttrs (old: {
           buildInputs = builtins.filter
@@ -89,14 +204,13 @@
         });
       };
 
-      # Shared uConsole CM5 module set — used by both toplevel and SD image
       uconsoleBaseModules = [
         {
           nixpkgs.buildPlatform = "x86_64-linux";
           nixpkgs.hostPlatform = "aarch64-linux";
           nixpkgs.config.allowUnfree = true;
           boot.loader.raspberry-pi.bootloader = "kernel";
-          nixpkgs.overlays = [ uconsoleCrossOverlay ];
+          nixpkgs.overlays = [ uconsoleCrossOverlay (import ./overlays/reticulum.nix) ];
         }
         nixos-raspberrypi.nixosModules.nixpkgs-rpi
         ({ config, lib, pkgs, ... }: {
@@ -107,7 +221,6 @@
         nixos-raspberrypi.lib.inject-overlays-global
         nixos-uconsole.nixosModules.uconsole-cm5
         ./modules/nixos/hardware/uconsole-cm5-aio-v2.nix
-        # Cross-compiled Lix for uConsole
         ({ config, lib, pkgs, inputs, ... }: let
           lixCross = import inputs.nixpkgs-uconsole {
             localSystem = { system = "x86_64-linux"; };
@@ -117,9 +230,12 @@
         in { nix.package = lixCross.lix; })
         inputs.home-manager.nixosModules.home-manager
         agenix.nixosModules.default
+        agenix-rekey.nixosModules.default
         ./hosts/uconsole-cm5/configuration.nix
         ./hosts/uconsole-cm5/hardware-configuration.nix
+        ./modules/nixos/services/remote-builder.nix
         ./modules/nixos/services/wireguard-client.nix
+        ./modules/nixos/services/clamav.nix
         ./modules/nixos/security/ai-worker-restricted.nix
         ./users/gortium/gortium.nix
         ./users/ai-worker/ai-worker.nix
@@ -136,14 +252,16 @@
               nixpkgs.config.permittedInsecurePackages = [ "openclaw-2026.3.12" ];
               nix.package = lix.packages.${system}.default;
             }
-        inputs.home-manager.nixosModules.home-manager
+            inputs.home-manager.nixosModules.home-manager
             agenix.nixosModules.default
             ./hosts/lazyworkhorse/configuration.nix
             ./hosts/lazyworkhorse/hardware-configuration.nix
             ./modules/nixos/filesystem/hoardingcow-mount.nix
             ./modules/nixos/services/docker_manager.nix
-            ./modules/nixos/services/wireguard-client.nix
+            ./modules/nixos/filesystem/poup-16t-disk.nix
             ./modules/nixos/services/ollama_init_custom_models.nix
+            ./modules/nixos/services/open_code_server.nix
+            ./modules/nixos/services/clamav.nix
             ./modules/nixos/security/ai-worker-restricted.nix
             ./users/gortium/gortium.nix
             ./users/ai-worker/ai-worker.nix
@@ -161,7 +279,8 @@
             }
             ./hosts/cyt-pi/configuration.nix
             ./hosts/cyt-pi/hardware-configuration.nix
-            ./modules/nixos/services/wireguard-client.nix
+            ./modules/nixos/services/remote-builder.nix
+        ./modules/nixos/services/wireguard-client.nix
             ./users/gortium/gortium.nix
           ];
         };
@@ -177,6 +296,11 @@
         };
       };
 
+      agenix-rekey = agenix-rekey.configure {
+        userFlake = self;
+        nixosConfigurations = self.nixosConfigurations;
+      };
+
       devShells.${system}.default = devShell;
 
       packages.${system} = {

hosts/lazyworkhorse/configuration.nix

@@ -166,9 +166,9 @@
     settings = {
       PasswordAuthentication = false;
       KbdInteractiveAuthentication = false;
-      # Additional hardening settings below in SERVER HARDENING section
-    };
-    hostKeys = [
+  # ============================================================
+  # ClamAV antivirus — daemon, hourly updates, daily scan, on-access
+  # ============================================================
       {
         path = "/etc/ssh/ssh_host_ed25519_key";
         type = "ed25519";
@@ -337,6 +337,16 @@
   # networking.firewall.enable = false;
 
   # =============================================================================
+  # ============================================================
+  # ClamAV antivirus — daemon, hourly updates, daily scan, on-access
+  # ============================================================
+  gortium.clamav = {
+    enable = true;
+    enableDaemon = true;
+    onAccessScanning = true;
+    dailyScanTime = "03:00";
+  };
+
   # SERVER HARDENING - Firewall, Fail2ban, SSH, Kernel
   # =============================================================================
   

hosts/uconsole-cm5/configuration.nix

@@ -6,6 +6,9 @@
   i18n.defaultLocale = "en_CA.UTF-8";
   system.stateVersion = "25.11";
 
+  # Boot & Hardware
+  boot.loader.raspberry-pi.bootloader = "kernel";
+
   # SSH — root access avec clés gortium + ai-worker
   services.openssh = {
     enable = true;
@@ -20,16 +23,12 @@
     users.ai-worker.main
   ];
 
-  # AI worker user (Hermes SSH access)
-
   # Age secret for gortium password (file created by user)
   age.secrets.gortium_password = {
     file = ../../secrets/gortium_password.age;
   };
 
-  # Password file for gortium (merges with users/gortium/default.nix)
-
-  # WiFi via NetworkManager + secret agenix
+  # WiFi via NetworkManager
   networking.networkmanager.enable = true;
 
   # Firmware
@@ -40,19 +39,169 @@
     enable = true;
     xwayland.enable = true;
   };
+
   # HackerGadgets AIO v2 board
   hardware.uconsole-cm5-aio-v2 = {
     enable = true;
-
-    # Rails actifs au boot
     bootRails = {
       GPS  = false;
       LORA = false;
       SDR  = false;
       USB  = false;
     };
-
     enableGPS = false;
   };
 
+  # User
+  users.users.gortium = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "networkmanager" "video" "dialout" "kismet" ];
+    hashedPasswordFile = config.age.secrets.gortium_password.path;
+    openssh.authorizedKeys.keys = [
+      keys.users.gortium.main
+      keys.users.gortium.gitea
+    ];
+  };
+  security.sudo.extraRules = [
+    {
+      users = [ "gortium" ];
+      commands = [{
+        command = "ALL";
+        options = [ "NOPASSWD" ];
+      }];
+    }
+  ];
+
+  # ============================================================
+  # Package groups
+  # ============================================================
+  environment.systemPackages = with pkgs; [
+    # ===== Base =====
+    emacs-pgtk
+    git
+    ripgrep
+    fd
+    htop
+    tmux
+
+    # ===== HAM Radio =====
+    wsjtx
+    fldigi
+    pat                        # Winlink client
+    direwolf                   # AX.25 packet modem
+    chirp                      # Radio programming tool
+    hamlib                     # Ham radio control libraries
+    trustedqsl                 # Logbook of the World (LoTW)
+
+    # ===== SDR / RF =====
+    sdrpp                      # SDR++ spectrum analyzer
+    gqrx                       # SDR receiver GUI
+    rtl-sdr                    # RTL-SDR drivers & utilities
+    inspectrum                # Offline signal analysis
+    soapysdr-with-plugins      # SoapySDR + hardware support plugins
+
+    # ===== Mesh / LoRa =====
+    reticulumStack             # Reticulum Network Stack
+    lxmf                       # LXMF messaging protocol
+    nomadnet                   # Nomad Network client
+
+    # ===== Security =====
+    nmap
+    aircrack-ng
+    kismet                     # Wi-Fi monitor / IDS
+    bettercap                  # MITM/network attack framework
+    wireshark-cli                  # Packet analyzer
+    john                       # John the Ripper
+    sqlmap                     # SQL injection tool
+
+    # ===== GPS / Maps =====
+    foxtrotgps
+    viking                     # GPS map editor
+    gpsbabel                   # GPS data conversion
+  ];
+
+  # ============================================================
+  # Reticulum Service (rnsd)
+  # ============================================================
+  systemd.services.rnsd = {
+    description = "Reticulum Network Stack Daemon";
+    wants = [ "network-online.target" ];
+    after = [ "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "gortium";
+      Group = "gortium";
+      ExecStart = "${pkgs.reticulumStack}/bin/rnsd";
+      Restart = "always";
+      RestartSec = "10s";
+      LimitNOFILE = 65536;
+    };
+  };
+
+  # ============================================================
+  # Kismet Service (Wi-Fi monitoring / mesh node)
+  # ============================================================
+  systemd.services.kismet = {
+    description = "Kismet Wi-Fi Monitor & IDS";
+    wants = [ "network-online.target" ];
+    after = [ "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "gortium";
+      Group = "kismet";
+      ExecStart = "${pkgs.kismet}/bin/kismet -c wlan0 --log-base=/home/gortium/kismet_logs --no-nc-ui";
+      Restart = "always";
+      RestartSec = "10s";
+    };
+  };
+
+  # ============================================================
+  # Kernel modules for SDR and radio
+  # ============================================================
+  boot.kernelModules = [
+    "88x2bu"          # Realtek 8812/8821BU USB WiFi
+    "rtl8xxxu"        # RTL8188/8192/8723 USB WiFi
+    "rtl2832_sdr"     # RTL-SDR kernel module
+    "dvb_usb_rtl28xxu" # RTL-SDR DVB-T
+  ];
+
+  # ============================================================
+  # Extra udev rules for SDR and HAM radio devices
+  # ============================================================
+  services.udev.packages = with pkgs; [ rtl-sdr ];
+
+  # ============================================================
+  # Enable IPv6 for Reticulum mesh
+  # ============================================================
+  networking.enableIPv6 = true;
+
+  # ============================================================
+  # Firewall
+  # ============================================================
+  networking.firewall.allowedTCPPorts = [ 22 ];
+  networking.firewall.allowedUDPPorts = [ ];
+  # ============================================================
+  # agenix-rekey — automatic secret re-encryption at deploy time
+  # ============================================================
+  age.rekey = {
+    # Master identities for encrypting secrets (on Thierry's laptop)
+    masterIdentities = [
+      "/home/gortium/.ssh/gortium_ssh_key"
+    ];
+
+    # uConsole SSH host pubkey — for automatic rekey at build time
+    # Once uConsole is deployed, replace with actual pubkey from:
+    #   ssh-keyscan uConsole.local | ssh-to-age
+    hostPubkey = "age1qyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqs3290gq"; # dummy — replace after bootstrap
+  };
+
+  # Enable remote builder (distributed build via lazyworkhorse server)
+  services.remoteBuilder.enable = true;
+  # ClamAV REMOVED — cross-compile failure (try_run + Rust linker)
+  # clamscan available from server when needed.
+  # gortium.clamav = {
+  #   enable = true;
+  #   enableDaemon = false;
+  # };
+
 }

modules/nixos/filesystem/poup-16t-disk.nix

@@ -0,0 +1,121 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.gortium.poup16t;
+  luksName = cfg.luksName;
+in
+with lib;
+
+{
+  options.gortium.poup16t = {
+    enable = mkEnableOption "Poup_16T storage disk (btrfs + LUKS + btrbk snapshots)";
+
+    luksUuid = mkOption {
+      type = types.str;
+      description = ''
+        UUID of the LUKS partition on the 16TB disk (WD Red Pro).
+
+        Find this by running as root when the disk is connected:
+          blkid /dev/sdb   # or wherever the disk appears
+          lsblk -o NAME,SIZE,FSTYPE,UUID
+
+        Since btrfs is inside LUKS, the FS UUID is hidden — use the
+        LUKS partition UUID from blkid (it'll show TYPE=\"crypto_LUKS\").
+      '';
+      example = "00000000-0000-0000-0000-000000000000";
+    };
+
+    luksName = mkOption {
+      type = types.str;
+      default = "poup_16t";
+      description = "Name for the LUKS /dev/mapper/ mapping";
+    };
+
+    mountPoint = mkOption {
+      type = types.str;
+      default = "/mnt/Poup_16T";
+      description = "Mount point for the 16TB data disk";
+    };
+
+    btrfsOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ "defaults" "noatime" "compress=zstd:3" "nofail" ];
+      description = "Mount options for the btrfs filesystem. 'nofail' ensures boot succeeds when disk is disconnected.";
+    };
+
+    btrbk = {
+      enable = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Enable btrbk snapshot management on this volume";
+      };
+
+      schedule = mkOption {
+        type = types.str;
+        default = "daily";
+        description = "systemd calendar event for btrbk (e.g. 'daily', 'hourly', '*-*-* 00:00:00')";
+      };
+
+      preserveMin = mkOption {
+        type = types.str;
+        default = "2d";
+        description = "btrbk snapshot_preserve_min — minimum age before pruning";
+      };
+
+      preserve = mkOption {
+        type = types.str;
+        default = "14d 4w 3m";
+        description = "btrbk snapshot_preserve — retention policy (daily, weekly, monthly)";
+      };
+
+      snapshotDir = mkOption {
+        type = types.str;
+        default = ".snapshots";
+        description = "Directory name for snapshots relative to volume root";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # Enable btrfs kernel support (no DKMS needed — it's in-tree)
+    boot.supportedFilesystems = [ "btrfs" ];
+
+    # Install btrfs administration tools
+    environment.systemPackages = with pkgs; [
+      btrfs-progs       # mkfs.btrfs, btrfs, fsck, balance, scrub
+      btrbk             # Snapshot management + rotation
+    ];
+
+    # LUKS2 unlock at boot (uses keyfile or prompts if unavailable)
+    # Since the disk may be disconnected, initrd times out gracefully (~30s)
+    boot.initrd.luks.devices.${luksName} = {
+      device = "/dev/disk/by-uuid/${cfg.luksUuid}";
+      preLVM = false;
+      allowDiscards = true;
+    };
+
+    # Mount the unlocked mapper device as btrfs
+    fileSystems.${cfg.mountPoint} = {
+      device = "/dev/mapper/${luksName}";
+      fsType = "btrfs";
+      options = cfg.btrfsOptions;
+    };
+
+    # btrbk — automated snapshot creation and rotation
+    services.btrbk = mkIf cfg.btrbk.enable {
+      instances.poup16t = {
+        onCalendar = cfg.btrbk.schedule;
+        settings = {
+          snapshot_preserve_min = cfg.btrbk.preserveMin;
+          snapshot_preserve = cfg.btrbk.preserve;
+
+          volume.${cfg.mountPoint} = {
+            snapshot_create = "always";
+            snapshot_dir = cfg.btrbk.snapshotDir;
+            subvolume = ".";
+          };
+        };
+      };
+    };
+  };
+}

modules/nixos/services/clamav.nix

@@ -0,0 +1,240 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.gortium.clamav;
+  clamavPkg = pkgs.clamav;
+
+  clamdConfig = pkgs.writeText "clamd.conf" ''
+    LogFile /var/log/clamav/clamd.log
+    LogTime yes
+    LogVerbose yes
+    LogSyslog yes
+    LocalSocket /run/clamav/clamd.sock
+    TCPSocket 3310
+    TCPAddr 127.0.0.1
+    User clamav
+    AllowSupplementaryGroups yes
+    ${cfg.clamdExtraConfig}
+  '';
+
+  freshclamConfig = pkgs.writeText "freshclam.conf" ''
+    DatabaseDirectory /var/lib/clamav
+    LogFile /var/log/clamav/freshclam.log
+    LogTime yes
+    LogVerbose yes
+    LogSyslog yes
+    User clamav
+    AllowSupplementaryGroups yes
+    ${cfg.freshclamExtraConfig}
+  '';
+
+  # Daily scan — logging only, no auto-quarantine/delete
+  scanScript = pkgs.writeShellScript "clamav-daily-scan" ''
+    set -e
+    PATHS="${concatStringsSep " " cfg.scanPaths}"
+    if [ -z "$PATHS" ]; then
+      echo "No paths configured for daily scan"
+      exit 0
+    fi
+    echo "=== ClamAV daily scan started: $(date) ==="
+    ${clamavPkg}/bin/clamdscan --fdpass --log=/var/log/clamav/daily-scan.log --no-summary $PATHS
+    echo "=== ClamAV daily scan finished: $(date) ==="
+  '';
+in
+{
+  ##### Options #####
+  options.gortium.clamav = {
+    enable = mkEnableOption "ClamAV antivirus — installs clamav CLI tools";
+
+    enableDaemon = mkOption {
+      type = types.bool;
+      default = true;
+      description = ''
+        Run clamd daemon + freshclam updater + daily scheduled scan.
+        Set to false on machines where you only want the CLI tools
+        (clamscan, clamdscan) for manual on-demand scanning.
+      '';
+    };
+
+    onAccessScanning = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Enable on-access scanning via clamonacc (fanotify-based).
+        Resource-heavy; server use only. Requires enableDaemon = true.
+      '';
+    };
+
+    scanPaths = mkOption {
+      type = types.listOf types.str;
+      default = [
+        "/home"
+        "/nix/store"
+        "/var/lib"
+        "/etc"
+        "/tmp"
+        "/var/tmp"
+      ];
+      description = "Paths for the daily scheduled scan.";
+    };
+
+    dailyScanTime = mkOption {
+      type = types.str;
+      default = "daily";
+      description = ''
+        When to run the daily scan. systemd calendar expression
+        or shortcuts like "daily", "weekly", "04:00".
+      '';
+    };
+
+    clamdExtraConfig = mkOption {
+      type = types.lines;
+      default = "";
+      description = "Extra lines appended to clamd.conf";
+    };
+
+    freshclamExtraConfig = mkOption {
+      type = types.lines;
+      default = "";
+      description = "Extra lines appended to freshclam.conf";
+    };
+  };
+
+  ##### Implementation #####
+  config = mkIf cfg.enable {
+    # 1. Package — always installed when enable = true
+    environment.systemPackages = [ clamavPkg ];
+
+    # Everything below uses mkIf cfg.enableDaemon — conditionalized per attribute
+
+    # 2. Users/groups (only if daemon runs)
+    users.users.clamav = mkIf cfg.enableDaemon {
+      isSystemUser = true;
+      group = "clamav";
+      home = "/var/lib/clamav";
+      createHome = true;
+      description = "ClamAV daemon user";
+    };
+    users.groups.clamav = mkIf cfg.enableDaemon {};
+
+    # 3. Directories (only if daemon runs)
+    systemd.tmpfiles.rules = mkIf cfg.enableDaemon [
+      "d /var/lib/clamav 0750 clamav clamav -"
+      "d /var/log/clamav 0750 clamav clamav -"
+      "d /run/clamav 0755 clamav clamav -"
+    ];
+
+    # 4. ClamAV daemon (clamd)
+    systemd.services.clamav-daemon = mkIf cfg.enableDaemon {
+      description = "ClamAV Anti-Virus Daemon";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      path = [ clamavPkg ];
+
+      preStart = ''
+        mkdir -p /var/lib/clamav /var/log/clamav /run/clamav
+        chown clamav:clamav /var/lib/clamav /var/log/clamav /run/clamav
+      '';
+
+      serviceConfig = {
+        Type = "simple";
+        ExecStart = "${clamavPkg}/bin/clamd --config-file=${clamdConfig}";
+        ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+        Restart = "on-failure";
+        RestartSec = "10s";
+        User = "clamav";
+        Group = "clamav";
+        RuntimeDirectory = "clamav";
+        RuntimeDirectoryMode = "0755";
+        StateDirectory = "clamav";
+        StateDirectoryMode = "0750";
+        LogsDirectory = "clamav";
+        LogsDirectoryMode = "0750";
+        PrivateTmp = true;
+        ProtectSystem = "strict";
+        ProtectHome = true;
+        ReadWritePaths = [
+          "/var/lib/clamav"
+          "/var/log/clamav"
+          "/run/clamav"
+        ];
+        NoNewPrivileges = true;
+      };
+    };
+
+    # 5. freshclam (database updater) — hourly via timer
+    systemd.services.clamav-freshclam = mkIf cfg.enableDaemon {
+      description = "ClamAV Virus Database Updater";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      path = [ clamavPkg pkgs.curl ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${clamavPkg}/bin/freshclam --config-file=${freshclamConfig} --daemon-notify=${clamdConfig}";
+        User = "clamav";
+        Group = "clamav";
+        PrivateTmp = true;
+        ProtectSystem = "full";
+        NoNewPrivileges = true;
+      };
+    };
+    systemd.timers.clamav-freshclam = mkIf cfg.enableDaemon {
+      description = "ClamAV database update timer";
+      wantedBy = [ "timers.target" ];
+      timerConfig = {
+        OnCalendar = "hourly";
+        Persistent = true;
+        RandomizedDelaySec = "1800";
+      };
+    };
+
+    # 6. Daily scan — logging only, no auto-quarantine
+    systemd.services.clamav-daily-scan = mkIf cfg.enableDaemon {
+      description = "ClamAV Daily Scheduled Scan";
+      after = [ "clamav-daemon.service" ];
+      requires = [ "clamav-daemon.service" ];
+      path = [ clamavPkg ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${scanScript}";
+        User = "clamav";
+        Group = "clamav";
+        PrivateTmp = true;
+        ProtectSystem = "strict";
+        ReadWritePaths = [ "/var/log/clamav" ];
+      };
+    };
+    systemd.timers.clamav-daily-scan = mkIf cfg.enableDaemon {
+      description = "ClamAV daily scan timer";
+      wantedBy = [ "timers.target" ];
+      timerConfig = {
+        OnCalendar = cfg.dailyScanTime;
+        Persistent = true;
+      };
+    };
+
+    # 7. On-access scanning (clamonacc) — needs enableDaemon
+    systemd.services.clamav-onaccess = mkIf (cfg.enableDaemon && cfg.onAccessScanning) {
+      description = "ClamAV On-Access Scanner (clamonacc)";
+      after = [ "clamav-daemon.service" ];
+      requires = [ "clamav-daemon.service" ];
+      wantedBy = [ "multi-user.target" ];
+      path = [ clamavPkg ];
+
+      serviceConfig = {
+        Type = "simple";
+        ExecStart = "${clamavPkg}/bin/clamonacc --config-file=${clamdConfig} --fdpass --log=/var/log/clamav/clamonacc.log";
+        Restart = "on-failure";
+        RestartSec = "10s";
+        User = "root";  # clamonacc needs root for fanotify
+        Group = "root";
+        PrivateTmp = true;
+        NoNewPrivileges = true;
+      };
+    };
+  };
+}

modules/nixos/services/remote-builder.nix

@@ -0,0 +1,71 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.services.remoteBuilder;
+in {
+  options.services.remoteBuilder = {
+    enable = lib.mkEnableOption "remote Nix build machine (lazyworkhorse server)";
+
+    buildMachine = {
+      host = lib.mkOption {
+        type = lib.types.str;
+        default = "lazyworkhorse.net";
+        description = "Hostname or IP of the remote build machine.";
+      };
+      sshUser = lib.mkOption {
+        type = lib.types.str;
+        default = "ai-worker";
+        description = "SSH user on the remote build machine.";
+      };
+      port = lib.mkOption {
+        type = lib.types.port;
+        default = 2424;
+        description = "SSH port — added via ~root/.ssh/config since nix.buildMachines has no sshPort option.";
+      };
+      systems = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ "aarch64-linux" "x86_64-linux" ];
+        description = "System types the remote builder can build for.";
+      };
+      maxJobs = lib.mkOption {
+        type = lib.types.int;
+        default = 16;
+        description = "Max parallel jobs on the remote builder.";
+      };
+      supportedFeatures = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ "big-parallel" "nixos-test" "benchmark" ];
+        description = "Features the remote builder supports.";
+      };
+    };
+
+    fallbackLocal = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Fall back to local build when remote builder is unreachable.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    nix.distributedBuilds = true;
+    nix.buildMachines = [{
+      hostName = cfg.buildMachine.host;
+      sshUser = cfg.buildMachine.sshUser;
+      systems = cfg.buildMachine.systems;
+      maxJobs = cfg.buildMachine.maxJobs;
+      supportedFeatures = cfg.buildMachine.supportedFeatures;
+    }];
+
+    nix.extraOptions = lib.optionalString cfg.fallbackLocal ''
+      builders-use-substitutes = true
+      fallback = true
+    '';
+
+    # SSH config for the remote builder (since nix.buildMachines has no port option)
+    programs.ssh.extraConfig = ''
+      Host ${cfg.buildMachine.host}
+        HostName ${cfg.buildMachine.host}
+        Port ${toString cfg.buildMachine.port}
+        User ${cfg.buildMachine.sshUser}
+    '';
+  };
+}

overlays/reticulum.nix

@@ -0,0 +1,81 @@
+final: prev: let
+  python3 = final.python3;
+  pyPkgs = python3.pkgs;
+in {
+  reticulumStack = python3.pkgs.buildPythonApplication rec {
+    pname = "reticulum";
+    version = "1.2.9";
+    format = "setuptools";
+    src = pyPkgs.fetchPypi {
+      pname = "rns";
+      inherit version;
+      sha256 = "554814231c237b9caacf8df669312e57dd7d3f84b6d4810125087d1a79a75d75";
+    };
+    propagatedBuildInputs = with pyPkgs; [ cryptography pyserial ];
+    doCheck = false;
+    pythonImportsCheck = [ "RNS" ];
+    meta = with final.lib; {
+      description = "Self-configuring, encrypted and resilient mesh networking stack";
+      homepage = "https://reticulum.network/";
+      license = licenses.mit;
+      platforms = platforms.linux;
+    };
+  };
+
+  lxmf = python3.pkgs.buildPythonApplication rec {
+    pname = "lxmf";
+    version = "0.9.8";
+    format = "setuptools";
+    src = pyPkgs.fetchPypi {
+      inherit pname version;
+      sha256 = "30f39f3a975a049c12ee2cfceb3261d24cb5adec881c6821f7354464b3f3650c";
+    };
+    propagatedBuildInputs = [ final.reticulumStack ];
+    doCheck = false;
+    pythonImportsCheck = [ "LXMF" ];
+    meta = with final.lib; {
+      description = "Lightweight Extensible Message Format for Reticulum";
+      homepage = "https://github.com/markqvist/lxmf";
+      license = licenses.mit;
+      platforms = platforms.linux;
+    };
+  };
+
+  nomadnet = python3.pkgs.buildPythonApplication rec {
+    pname = "nomadnet";
+    version = "1.1.1";
+    format = "setuptools";
+    src = pyPkgs.fetchPypi {
+      inherit pname version;
+      sha256 = "fa13b64a10e75b705a58024815ab72451700aa726af96d415ba99dec28dfc40a";
+    };
+    propagatedBuildInputs = with pyPkgs; [ final.reticulumStack final.lxmf urwid qrcode ];
+    doCheck = false;
+    pythonImportsCheck = [ "nomadnet" ];
+    meta = with final.lib; {
+      description = "Nomad Network — resilient mesh communications platform";
+      homepage = "https://github.com/markqvist/NomadNet";
+      license = licenses.mit;
+      platforms = platforms.linux;
+    };
+  };
+
+  rnsh = python3.pkgs.buildPythonApplication rec {
+    pname = "rnsh";
+    version = "0.1.7";
+    format = "setuptools";
+    src = pyPkgs.fetchPypi {
+      inherit pname version;
+      sha256 = "9cb72f25abb1c6d300f8014b264184ff78f592fe88e36094938012990b797c93";
+    };
+    propagatedBuildInputs = [ final.reticulumStack ];
+    doCheck = false;
+    pythonImportsCheck = [ "rnsh" ];
+    meta = with final.lib; {
+      description = "Remote shell over Reticulum";
+      homepage = "https://github.com/acehoss/rnsh";
+      license = licenses.mit;
+      platforms = platforms.linux;
+    };
+  };
+}

result

@@ -1 +0,0 @@
-/nix/store/z86r4awsbrc5q9qhwwi757wxixcqgn31-nixos-system-uConsole-25.11.20260608.e820eb4