fix avahi

packages/homeassistant/ha-icloud3/default.nix

@@ -1,20 +1,27 @@
 {
+  lib,
+  namespace,
+  pkgs,
   buildHomeAssistantComponent,
-  fetchFromGitHub,
   home-assistant,
   ...
 }:
-buildHomeAssistantComponent rec {
-  owner = "gcobb321";
-  domain = "icloud3";
-  version = "v3.3.4.4";
+let
+  inherit (lib.trivial) importJSON;
+  inherit (lib.${namespace}) selectVariant mkAllSources;
 
-  src = fetchFromGitHub {
-    owner = owner;
-    repo = "icloud3";
-    rev = "${version}";
-    hash = "sha256-B63iY4OC00PGXx/3aq/rkiO0xK11hXz66KaglwmgxIk=";
-  };
+  versionSpec = importJSON ./version.json;
+  selected = selectVariant versionSpec null null;
+  sources = mkAllSources pkgs selected;
+  src-meta = selected.sources.icloud3;
+  version = if src-meta ? tag then src-meta.tag else src-meta.rev;
+in
+buildHomeAssistantComponent {
+  owner = src-meta.owner;
+  domain = "icloud3";
+  inherit version;
+
+  src = sources.icloud3;
 
   nativeBuildInputs = with home-assistant.python.pkgs; [
     fido2

packages/homeassistant/ha-icloud3/version.json

@@ -0,0 +1,15 @@
+{
+  "schemaVersion": 1,
+  "variables": {
+    "version": "v3.3.4.4"
+  },
+  "sources": {
+    "icloud3": {
+      "fetcher": "github",
+      "owner": "gcobb321",
+      "repo": "icloud3",
+      "tag": "v3.3.4.4",
+      "hash": "sha256-B63iY4OC00PGXx/3aq/rkiO0xK11hXz66KaglwmgxIk="
+    }
+  }
+}