Use lnxlink in place of custom shutdown script

homes/x86_64-linux/christopher@cobalt/misc/browser.nix

@@ -1,6 +1,7 @@
 {pkgs, ...}: {
   home.packages = with pkgs; [
     firefox
+    vivaldi
   ];
 
   xdg.mimeApps = {
@@ -13,7 +14,7 @@
 
   # profile-sync-daemon manages browser profiles in tmpfs
   services.psd = {
-    enable = true;
+    enable = false;
-    resyncTimer = "10m";
+    # resyncTimer = "10m";
   };
 }

homes/x86_64-linux/christopher@cobalt/misc/everything.nix

@@ -27,6 +27,7 @@
     obs-studio # OBS Studio
     wasistlos # WhatsApp client
     libreoffice # Productivity Suite (like Microsoft Office)
+    onlyoffice-bin # libreoffice alternative
     cider # Apple Music player
     filezilla # FTP Client
     zathura # Document viewer

modules/nixos/services/default.nix

@@ -1,5 +1,5 @@
 {...}: {
   imports = [
-    ./shutdown.nix
+    ./lnxlink.nix
   ];
 }

modules/nixos/services/lnxlink.nix

@@ -0,0 +1,64 @@
+{
+  pkgs,
+  config,
+  lib,
+  inputs,
+  ...
+}:
+with lib; let
+  cfg = config.services.lnxlink;
+
+  lnxlink = pkgs.python3Packages.buildPythonApplication {
+    pname = "lnxlink";
+    version = "2025.7.0";
+    pyproject = true;
+
+    # Linking my fork here which allows for newer versions of setuptools and wheel.
+    # Also includes some fixes that make the program actually work with NixOS.
+    src = pkgs.fetchFromGitHub {
+      owner = "padarom";
+      repo = "lnxlink";
+      rev = "7202e48";
+      hash = "sha256-E2J1d9D5SJWGEutAPAo1BM98cMzH7QrqIz3yrlXpzGE=";
+    };
+
+    build-system = with pkgs.python3Packages; [setuptools wheel];
+    dependencies = with pkgs.python3Packages; [
+      distro
+      pyyaml
+      paho-mqtt
+      requests
+      psutil
+      inotify
+      jeepney
+    ];
+
+    meta = {
+      homepage = "https://github.com/bkbilly/lnxlink";
+      description = "Effortlessly manage your Linux machine using MQTT.";
+      license = licenses.mit;
+      mainProgram = "lnxlink";
+    };
+  };
+in {
+  options.services = {
+    lnxlink = {
+      enable = mkEnableOption "Enable LNXlink";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [lnxlink];
+
+    systemd.services.lnxlink = {
+      enable = true;
+      wantedBy = ["multi-user.target"];
+      serviceConfig = {
+        # Note: Logging will also be done to the working directory, so logs will
+        # be lost upon a restart.
+        WorkingDirectory = "/tmp";
+        ExecStart = "${lnxlink}/bin/lnxlink -i -c ${./lnxlink.yaml}";
+      };
+    };
+  };
+}

modules/nixos/services/lnxlink.yaml

@@ -0,0 +1,84 @@
+mqtt:
+  prefix: lnxlink
+  clientId: cobalt
+  server: nanomq.intern.muehl.dev
+  port: 1883
+  auth:
+    user: cobalt
+    pass: cobalt
+    tls: false
+    keyfile: ''
+    certfile: ''
+    ca_certs: ''
+  discovery:
+    enabled: true
+  lwt:
+    enabled: true
+    qos: 1
+  clear_on_off: true
+update_interval: 5
+update_on_change: false
+hass_url: null
+hass_api: null
+modules: null
+custom_modules: null
+exclude:
+- audio_select
+- active_window
+- bash
+- battery
+- beacondb
+- bluetooth
+- boot_select
+- brightness
+- fullscreen
+- gpio
+- gpu
+- idle
+- inference_time
+- ir_remote
+- keep_alive
+- keyboard_hotkeys
+- media
+- mouse
+- network
+- notify
+- power_profile
+- restful
+- screen_onoff
+- screenshot
+- send_keys
+- speech_recognition
+- systemd
+- sys_updates
+- steam
+- wifi
+- webcam
+- xdg_open
+- wol
+- docker
+settings:
+  systemd: null
+  gpio:
+    inputs: null
+    outputs: null
+  hotkeys: null
+  battery:
+    include_batteries: []
+    exclude_batteries: []
+  disk_usage:
+    include_disks: []
+    exclude_disks: []
+  statistics: https://analyzer.bkbilly.workers.dev
+  bash:
+    allow_any_command: false
+    expose: null
+  mounts:
+    autocheck: false
+    directories: []
+  ir_remote:
+    receiver: null
+    transmitter: null
+    buttons: []
+  restful:
+    port: 8112

modules/nixos/services/shutdown.nix

@@ -1,58 +0,0 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
-}:
-with lib; let
-  # The command to run in order to shut down the computer
-  command = "${pkgs.systemd}/bin/systemctl poweroff -i";
-
-  # Write this command into a shell script
-  bin = pkgs.writeShellScriptBin "shutdown" command;
-
-  cfg = config.services.homeassistant-shutdown;
-in {
-  options.services = {
-    homeassistant-shutdown = {
-      enable = mkEnableOption "HomeAssistant shutdown service";
-    };
-  };
-
-  config = mkIf cfg.enable {
-    users.users.hass = {
-      isNormalUser = true;
-      home = "/home/hass";
-      description = "HomeAssistant automations";
-      extraGroups = [];
-      openssh.authorizedKeys.keys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICzLKowPwiQtAIgrY1wSvdolcDkbXokWrda//EEzQfR5 root@homeassistant"];
-    };
-
-    # Create a symlink to the shell script we created to the absolute path
-    # /etc/shutdown-script
-    environment.etc.shutdown-script.source = "${bin}/bin/shutdown";
-
-    security.sudo.extraRules = [
-      {
-        users = ["hass"];
-        commands = [
-          {
-            # Allow the 'hass' user to run the shutdown script
-            command = "/etc/shutdown-script";
-            options = ["NOPASSWD"];
-          }
-        ];
-      }
-    ];
-
-    # Allow the 'hass' user to log in, but not via password authentication.
-    # The authorized key is specified above.
-    services.openssh = {
-      enable = true;
-      settings = {
-        PasswordAuthentication = false;
-        AllowUsers = ["hass"];
-      };
-    };
-  };
-}

packages/solidtime-desktop/default.nix

@@ -0,0 +1,5 @@
+{pkgs, ...}:
+pkgs.writeShellApplication {
+  name = "connect-to-mercury";
+  text = builtins.readFile ./connect-to-mercury;
+}

systems/x86_64-linux/cobalt/default.nix

@@ -3,9 +3,7 @@
 # Main tower workstation environment
 {
   pkgs,
-  inputs,
   lib,
-  config,
   ...
 }:
 with lib._elements; {
@@ -39,6 +37,7 @@ with lib._elements; {
   networking = {
     hostName = "cobalt";
     firewall.enable = false;
+    interfaces.eno1.wakeOnLan.enable = true;
   };
 
   # Set your time zone.
@@ -88,7 +87,8 @@ with lib._elements; {
     # Bluetooth manager
     blueman.enable = true;
 
-    homeassistant-shutdown.enable = true;
+    # Linux link via MQTT
+    lnxlink.enable = true;
 
     pulseaudio.enable = true;
     pulseaudio.support32Bit = true;

systems/x86_64-linux/cobalt/disk-config.nix

@@ -31,6 +31,29 @@
           };
         };
       };
+
+      gaming = {
+        type = "disk";
+        device = "/dev/sdd";
+        content = {
+          type = "gpt";
+          partitions = {
+            gaming = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = ["-f"];
+                mountpoint = "/mnt/games/hdd";
+                mountOptions = [
+                  "compress=zstd"
+                  "noatime"
+                  "nofail"
+                ];
+              };
+            };
+          };
+        };
+      };
     };
   };
 }

systems/x86_64-linux/cobalt/hardware.nix

@@ -28,17 +28,6 @@
     ];
   };
 
-  fileSystems."/mnt/games/hdd" = {
-    device = "/dev/disk/by-label/Spiele";
-    fsType = "ntfs";
-    options = [
-      "nofail"
-      "exec"
-      "users"
-      "permissions"
-    ];
-  };
-
   environment.systemPackages = [pkgs.rclone];
   environment.etc."rclone-beryllium.conf".text = ''
     [beryllium]