start to use home manager as NixOS module

machines/calcite/network.nix

@@ -0,0 +1,37 @@
+{ pkgs, ...}:
+
+{
+  # Enable networking
+  networking = {
+    nameservers = [ "127.0.0.1" "::1" ];
+    networkmanager = {
+      enable = true;
+    };
+    resolvconf.useLocalResolver = true;
+  };
+
+  # Enable Tailscale
+  services.tailscale.enable = true;
+  # services.tailscale.useRoutingFeatures = "both";
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  networking.firewall.allowedUDPPorts = [ 41641 ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  programs.steam.remotePlay.openFirewall = true;
+
+  # Add gsconnect, open firewall
+  programs.kdeconnect = {
+    enable = true;
+    package = pkgs.gnomeExtensions.gsconnect;
+  };
+
+  programs.wireshark = {
+    enable = true;
+    package = pkgs.wireshark-qt;
+  };
+
+  # services.gnome.gnome-remote-desktop.enable = true;
+}