hswaw/machines/tv: enable avahi

This fixes webrtc mdns discovery. (to be used sometime later for desktop
casting in a separate tool)

Change-Id: Ic3d454c67ff930d13990481b7ed33f9bf1f5c5e0
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1341
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/hswaw/machines/tv/common.nix b/hswaw/machines/tv/common.nix
index 228d780..fdabf4f 100644
--- a/hswaw/machines/tv/common.nix
+++ b/hswaw/machines/tv/common.nix
@@ -32,6 +32,12 @@
   networking.domain = "waw.hackerspace.pl";
   time.timeZone = "Europe/Warsaw";
 
+  services.avahi = {
+    enable = true;
+    nssmdns = true;
+    publish.addresses = true;
+  };
+
   sound.enable = true;
   services.pipewire = {
     enable = true;