add new app for systemd monitoring

modules/core/sovran_systemsos-desktop.nix

@@ -84,6 +84,7 @@ in
           "org.gnome.Settings.desktop"
           "org.gnome.Nautilus.desktop"
           "Sovran_SystemsOS_Updater.desktop"
+          "Sovran_SystemsOS_Hub.desktop"
           "org.gnome.Software.desktop"
           "org.gnome.Geary.desktop"
           "org.gnome.Contacts.desktop"
@@ -163,4 +164,4 @@ in
   }
   ];
 
-}
+}

modules/core/sovran_systemsos_hub.nix

@@ -0,0 +1,132 @@
+# modules/core/sovran-hub.nix
+#
+# Declarative NixOS module that:
+#   1. Builds the Sovran_SystemsOS_Hub GTK4 app as a Nix derivation
+#   2. Generates its config.json from existing sovran_systemsOS options
+#   3. Installs a .desktop file so it appears in GNOME Activities
+
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.sovran_systemsOS;
+
+  # ── Build the list of monitored units from NixOS option state ──
+  #
+  # The JSON config is computed at NixOS evaluation time from the
+  # SAME options that control whether the services actually run.
+  # No separate config file to maintain.
+
+  monitoredServices =
+    (lib.optional cfg.services.bitcoin
+      { name = "Bitcoind";           unit = "bitcoind.service";         type = "system"; })
+    ++ (lib.optional cfg.services.bitcoin
+      { name = "Electrs";            unit = "electrs.service";          type = "system"; })
+    ++ (lib.optional cfg.services.bitcoin
+      { name = "LND";                unit = "lnd.service";              type = "system"; })
+    ++ (lib.optional cfg.services.bitcoin
+      { name = "Ride The Lightning"; unit = "rtl.service";              type = "system"; })
+    ++ (lib.optional cfg.services.bitcoin
+      { name = "BTCPayserver";       unit = "btcpayserver.service";     type = "system"; })
+    ++ (lib.optional cfg.services.synapse
+      { name = "Matrix-Synapse";     unit = "matrix-synapse.service";   type = "system"; })
+    ++ (lib.optional cfg.services.synapse
+      { name = "Coturn";             unit = "coturn.service";           type = "system"; })
+    ++ (lib.optional cfg.services.vaultwarden
+      { name = "VaultWarden";        unit = "vaultwarden.service";      type = "system"; })
+    ++ (lib.optional cfg.services.nextcloud
+      { name = "Nextcloud";          unit = "phpfpm-nextcloud.service"; type = "system"; })
+    ++ (lib.optional cfg.services.wordpress
+      { name = "WordPress";          unit = "phpfpm-wordpress.service"; type = "system"; })
+    ++ (lib.optional cfg.features.haven
+      { name = "Haven Relay";        unit = "haven-relay.service";      type = "system"; })
+    ++ (lib.optional cfg.features.mempool
+      { name = "Mempool";            unit = "mempool.service";          type = "system"; })
+    ++ (lib.optional cfg.features.element-calling
+      { name = "LiveKit";            unit = "livekit.service";          type = "system"; })
+    # Always-on infrastructure
+    ++ [
+      { name = "Caddy";      unit = "caddy.service";       type = "system"; }
+      { name = "Tor";         unit = "tor.service";         type = "system"; }
+      { name = "PostgreSQL";  unit = "postgresql.service";  type = "system"; }
+      { name = "Fail2Ban";   unit = "fail2ban.service";     type = "system"; }
+      { name = "SSH";         unit = "sshd.service";        type = "system"; }
+    ];
+
+  # ── Generate the config.json at build time ──
+  generatedConfig = pkgs.writeText "sovran-hub-config.json"
+    (builtins.toJSON {
+      refresh_interval = 5;
+      command_method   = "systemctl";
+      services         = monitoredServices;
+    });
+
+  # ── Package the Python GTK4 app ──
+  sovran-hub = pkgs.python3Packages.buildPythonApplication {
+    pname   = "sovran-systemsos-hub";
+    version = "1.0.0";
+    format  = "other";
+
+    src = ../../app;
+
+    nativeBuildInputs = [ pkgs.wrapGAppsHook4 ];
+
+    buildInputs = [
+      pkgs.gtk4
+      pkgs.libadwaita
+      pkgs.gobject-introspection
+    ];
+
+    propagatedBuildInputs = [
+      pkgs.python3Packages.pygobject3
+    ];
+
+    dontBuild = true;
+
+    installPhase = ''
+      mkdir -p $out/bin $out/lib/sovran-hub $out/share/applications
+
+      # Copy Python source
+      cp -r sovran_systemsos_hub $out/lib/sovran-hub/
+
+      # Install the generated config (from Nix options, not a static file)
+      cp ${generatedConfig} $out/lib/sovran-hub/config.json
+
+      # Create the launcher script
+      cat > $out/bin/sovran-hub <<'LAUNCHER'
+#!/usr/bin/env python3
+import sys, os
+sys.path.insert(0, os.path.join("@out@", "lib", "sovran-hub"))
+os.environ["SOVRAN_HUB_CONFIG"] = os.path.join("@out@", "lib", "sovran-hub", "config.json")
+from sovran_systemsos_hub.application import SovranHubApp
+sys.exit(SovranHubApp().run(sys.argv))
+LAUNCHER
+
+      substituteInPlace $out/bin/sovran-hub --replace "@out@" "$out"
+      chmod +x $out/bin/sovran-hub
+
+      # Desktop file
+      cat > $out/share/applications/Sovran_SystemsOS_Hub.desktop <<EOF
+[Desktop Entry]
+Type=Application
+Name=Sovran_SystemsOS Hub
+Comment=Manage Sovran_SystemsOS systemd services
+Exec=$out/bin/sovran-hub
+Icon=system-run-symbolic
+Terminal=false
+Categories=System;Monitor;
+StartupWMClass=com.sovransystems.hub
+EOF
+    '';
+
+    meta = {
+      description = "Sovran_SystemsOS Hub — GTK4 app to manage systemd services";
+      mainProgram = "sovran-hub";
+    };
+  };
+
+in
+{
+  config = {
+    environment.systemPackages = [ sovran-hub ];
+  };
+}