home-assistant.intents: return to source build

Closes: home-assistant/intents-package#3

pkgs/servers/home-assistant/intents.nix

@@ -1,33 +1,67 @@
 { lib
 , buildPythonPackage
-, fetchPypi
+, fetchFromGitHub
 , pythonOlder
 
 # build-system
 , setuptools
+
+# codegen
+, hassil
+, python
+, pyyaml
+, voluptuous
+, regex
+, jinja2
+
+# tests
+, pytest-xdist
+, pytestCheckHook
 }:
 
 buildPythonPackage rec {
   pname = "home-assistant-intents";
   version = "2024.4.3";
-  format = "wheel";
+  pyproject = true;
 
   disabled = pythonOlder "3.9";
 
-  src = fetchPypi {
-    inherit version format;
-    pname = "home_assistant_intents";
-    dist = "py3";
-    python = "py3";
-    hash = "sha256-GraYVtioKIoKlPRBhhhzlbBfI6heXAaA1MQpUqAgEDQ=";
+  src = fetchFromGitHub {
+    owner = "home-assistant";
+    repo = "intents-package";
+    rev = "refs/tags/${version}";
+    hash = "sha256-hcstD1qkngZAl/jKLez+4qDs/ZIandkVkY2jrvZqph8=";
+    fetchSubmodules = true;
   };
 
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail "setuptools~=62.3" "setuptools" \
+      --replace-fail "wheel~=0.37.1" "wheel"
+  '';
+
   build-system = [
     setuptools
+
+    # build-time codegen; https://github.com/home-assistant/intents/blob/main/requirements.txt#L1-L5
+    hassil
+    pyyaml
+    voluptuous
+    regex
+    jinja2
   ];
 
-  # sdist/wheel do not ship tests
-  doCheck = false;
+  postInstall = ''
+    # https://github.com/home-assistant/intents-package/blob/main/script/package#L23-L24
+    PACKAGE_DIR=$out/${python.sitePackages}/home_assistant_intents
+    ${python.pythonOnBuildForHost.interpreter} script/merged_output.py $PACKAGE_DIR/data
+    ${python.pythonOnBuildForHost.interpreter} script/write_languages.py $PACKAGE_DIR/data > $PACKAGE_DIR/languages.py
+  '';
+
+  nativeCheckInputs = [
+    pytest-xdist
+    pytestCheckHook
+  ];
 
   pytestFlagsArray = [
     "intents/tests"