fix avahi

packages/homeassistant/ha-mail-and-packages/default.nix

@@ -1,20 +1,27 @@
 {
+  lib,
+  namespace,
+  pkgs,
   buildHomeAssistantComponent,
-  fetchFromGitHub,
   home-assistant,
   ...
 }:
-buildHomeAssistantComponent rec {
-  owner = "moralmunky";
-  domain = "mail_and_packages";
-  version = "0.5.0";
+let
+  inherit (lib.trivial) importJSON;
+  inherit (lib.${namespace}) selectVariant mkAllSources;
 
-  src = fetchFromGitHub {
-    owner = owner;
-    repo = "Home-Assistant-Mail-And-Packages";
-    tag = version;
-    hash = "sha256-Am3EYkSYCQuYJmm6xdUwCa0h/ldk4hwTxRTxc0BU2j8=";
-  };
+  versionSpec = importJSON ./version.json;
+  selected = selectVariant versionSpec null null;
+  sources = mkAllSources pkgs selected;
+  src-meta = selected.sources.mail_and_packages;
+  version = if src-meta ? tag then src-meta.tag else src-meta.rev;
+in
+buildHomeAssistantComponent {
+  owner = src-meta.owner;
+  domain = "mail_and_packages";
+  inherit version;
+
+  src = sources.mail_and_packages;
 
   nativeBuildInputs = with home-assistant.python.pkgs; [
     aioimaplib