fix avahi

packages/homeassistant/ha-nanokvm/default.nix

@@ -1,22 +1,38 @@
 {
+  lib,
+  namespace,
+  pkgs,
   buildHomeAssistantComponent,
-  fetchFromGitHub,
   home-assistant,
   ...
 }:
 let
+  inherit (lib.trivial) importJSON;
+  inherit (lib.${namespace}) selectVariant mkAllSources;
+
+  versionSpec = importJSON ./version.json;
+  selected = selectVariant versionSpec null null;
+  sources = mkAllSources pkgs selected;
+  src-meta = selected.sources.nanokvm;
+  version = if src-meta ? tag then src-meta.tag else src-meta.rev;
+
+  # python-nanokvm must be built against HA's Python interpreter.
+  # Re-use the source from its own version.json to avoid duplication.
+  nanokvm-ver = importJSON ../../python/python-nanokvm/version.json;
+  nanokvm-selected = selectVariant nanokvm-ver null null;
+  nanokvm-sources = mkAllSources pkgs nanokvm-selected;
+
   python3Packages = home-assistant.python.pkgs;
-  python-nanokvm = python3Packages.buildPythonPackage rec {
+  python-nanokvm = python3Packages.buildPythonPackage {
     pname = "nanokvm";
-    version = "0.1.0";
+    version =
+      if nanokvm-selected.sources."python-nanokvm" ? tag then
+        nanokvm-selected.sources."python-nanokvm".tag
+      else
+        nanokvm-selected.sources."python-nanokvm".rev;
     format = "pyproject";
 
-    src = fetchFromGitHub {
-      owner = "puddly";
-      repo = "python-${pname}";
-      rev = "v${version}";
-      sha256 = "sha256-vIxvQtjaInnWQce7syiOWpP2kaw0IVw03HPovnB2J5M=";
-    };
+    src = nanokvm-sources."python-nanokvm";
 
     prePatch = ''
           rm -f pyproject.toml
@@ -50,9 +66,7 @@ let
       EOF
     '';
 
-    buildInputs = with python3Packages; [
-      setuptools
-    ];
+    buildInputs = with python3Packages; [ setuptools ];
 
     propagatedBuildInputs = with python3Packages; [
       aiohttp
@@ -66,21 +80,14 @@ let
     doCheck = false;
   };
 in
-buildHomeAssistantComponent rec {
-  owner = "Wouter0100";
+buildHomeAssistantComponent {
+  owner = src-meta.owner;
   domain = "nanokvm";
-  version = "v0.0.4";
+  inherit version;
 
-  src = fetchFromGitHub {
-    owner = owner;
-    repo = "homeassistant-nanokvm";
-    rev = "bdd2ca39d8050e4b38bb7917ee4034f2fcd49471";
-    hash = "sha256-S6g9mfPEixqeGQkXVK8PZJ/dnEC5ThKtbELAIAhCANM=";
-  };
+  src = sources.nanokvm;
 
-  propagatedBuildInputs = [
-    python-nanokvm
-  ];
+  propagatedBuildInputs = [ python-nanokvm ];
 
   postPatch = ''
     substituteInPlace custom_components/nanokvm/manifest.json \