nixos/gnome-initial-setup: init

It tries to start during the GDM session even
with the conflicts.

nixos/modules/module-list.nix

@@ -299,10 +299,11 @@
   ./services/desktops/gnome3/chrome-gnome-shell.nix
   ./services/desktops/gnome3/evolution-data-server.nix
   ./services/desktops/gnome3/glib-networking.nix
+  ./services/desktops/gnome3/gnome-initial-setup.nix
   ./services/desktops/gnome3/gnome-keyring.nix
   ./services/desktops/gnome3/gnome-online-accounts.nix
-  ./services/desktops/gnome3/gnome-remote-desktop.nix
   ./services/desktops/gnome3/gnome-online-miners.nix
+  ./services/desktops/gnome3/gnome-remote-desktop.nix
   ./services/desktops/gnome3/gnome-settings-daemon.nix
   ./services/desktops/gnome3/gnome-user-share.nix
   ./services/desktops/gnome3/rygel.nix

nixos/modules/services/desktops/gnome3/gnome-initial-setup.nix

@@ -0,0 +1,56 @@
+# GNOME Initial Setup.
+
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.gnome3.gnome-initial-setup = {
+
+      enable = mkEnableOption "GNOME Initial Setup, a Simple, easy, and safe way to prepare a new system";
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf config.services.gnome3.gnome-initial-setup.enable {
+
+    environment.systemPackages = [
+      pkgs.gnome3.gnome-initial-setup
+    ];
+
+    systemd.packages = [
+      pkgs.gnome3.gnome-initial-setup
+    ];
+
+    systemd.user.targets."gnome-session".wants = [
+      "gnome-initial-setup-copy-worker.service"
+      "gnome-initial-setup-first-login.service"
+      "gnome-welcome-tour.service"
+    ];
+
+    systemd.user.targets."gnome-session@gnome-initial-setup".wants = [
+      "gnome-initial-setup.service"
+    ];
+
+    # Setup conflicts
+    systemd.user.services."gnome-initial-setup-copy-worker".conflicts = [
+      "gnome-session@gnome-login.target"
+    ];
+
+    systemd.user.services."gnome-initial-setup-first-login".conflicts = [
+      "gnome-session@gnome-login.target"
+      "gnome-session@gnome-initial-setup.target"
+    ];
+
+  };
+
+}

nixos/modules/services/x11/desktop-managers/gnome3.nix

@@ -229,6 +229,7 @@ in
       services.colord.enable = mkDefault true;
       services.gnome3.chrome-gnome-shell.enable = mkDefault true;
       services.gnome3.glib-networking.enable = true;
+      services.gnome3.gnome-initial-setup.enable = mkDefault true;
       services.gnome3.gnome-remote-desktop.enable = mkDefault true;
       services.gnome3.gnome-settings-daemon.enable = true;
       services.gnome3.gnome-user-share.enable = mkDefault true;