fix: Python 3.12 compatibility - module attribute on EntryPoint

It seems that in recent releases EntryPoint API has stabilised and
settled on module instead of module_name attribute

src/qemu_runner/make_runner/make.py

@@ -31,7 +31,10 @@ def load_layers_from_all_search_paths(layer_names: List[str]) -> List[str]:
         eps = importlib.metadata.entry_points(group='qemu_runner_layer_packages')
 
         for ep in eps:
-            packages.append(ep.module_name)
+            module_name = getattr(ep, 'module', None)
+            if module_name is None:
+                module_name = ep.module_name
+            packages.append(module_name)
 
     return [load_layer(layer, packages=packages) for layer in layer_names]
 

tests/test_venv.py

@@ -27,10 +27,6 @@ def install_script(builder: venv.EnvBuilder, context, name, url):
     os.unlink(distpath)
 
 
-def install_setuptools(builder: venv.EnvBuilder, context):
-   subprocess.run([context.env_exe, '-m', 'pip', 'install', 'setuptools'], check=True)
-
-
 @pytest.fixture()
 def venv_py(tmp_path: Path) -> Path:
     venv_dir = tmp_path / 'venv'
@@ -41,9 +37,6 @@ def create_venv(venv_dir: Path):
     builder = venv.EnvBuilder(with_pip=True)
     builder.create(venv_dir)
     ctx = builder.ensure_directories(venv_dir)
-    # builder.create_configuration(ctx)
-    # builder.setup_python(ctx)
-    install_setuptools(builder, ctx)
     return Path(ctx.env_exe)
 
 
@@ -64,12 +57,8 @@ def make_runner(python: Path, args: List[str], cwd: Path):
 
 
 def install_dev_package(python: Path, pkg: Path):
-    cp = subprocess.run([
-        python,
-        pkg / 'setup.py',
-        '-q',
-        'install'
-    ],
+    cp = subprocess.run(
+        [python, '-m', 'pip', 'install', '-q', pkg],
         stdout=subprocess.PIPE,
         stderr=subprocess.PIPE,
         encoding='utf-8',

tox.ini

@@ -12,8 +12,5 @@ python =
     3.12: py312, mypy
 
 [testenv]
-;download = true
-;recreate = true
-;alwayscopy = true
 deps = pytest
 commands = pytest tests