feat: Support meson-python editable modules

src/griffe/finder.py

@@ -36,6 +36,7 @@
 _editable_editables_patterns = [re.compile(pat) for pat in (r"^__editables_\w+\.py$", "^_editable_impl_\\w+\\.py$")]
 _editable_setuptools_patterns = [re.compile(pat) for pat in ("^__editable__\\w+\\.py$",)]
 _editable_scikit_build_core_patterns = [re.compile(pat) for pat in (r"^_\w+_editable.py$",)]
+_editable_meson_python_patterns = [re.compile(pat) for pat in (r"^_\w+_editable_loader.py$",)]
 
 
 def _match_pattern(string: str, patterns: Sequence[Pattern]) -> bool:
@@ -421,6 +422,14 @@ def _handle_editable_module(path: Path) -> list[Path]:
                 and node.targets[0].id == "MAPPING"
             ) and isinstance(node.value, ast.Dict):
                 return [Path(cst.value).parent for cst in node.value.values if isinstance(cst, ast.Constant)]
+    if _match_pattern(path.name, _editable_meson_python_patterns):
+        # Support for how 'meson-python' writes these files:
+        # example line: `install({'package', 'module1'}, '/media/data/dev/griffe/build/cp311', ["path"], False)`.
+        # Compiled modules then found in the cp311 folder, under src/package.
+        parsed_module = ast.parse(path.read_text())
+        for node in parsed_module.body:
+            if isinstance(node, ast.Expr) and isinstance(node.value, ast.Call) and node.value.func.id == "install":
+                return [Path(node.value.args[1].value, "src")]
     raise UnhandledEditableModuleError(path)
 
 

tests/test_finder.py

@@ -166,6 +166,19 @@ def test_scikit_build_core_file_handling(tmp_path: Path) -> None:
     assert _handle_editable_module(pth_file) == [Path("/path/to/whatever")]
 
 
+def test_meson_python_file_handling(tmp_path: Path) -> None:
+    """Assert editable modules by `meson-python` are handled.
+
+    Parameters:
+        tmp_path: Pytest fixture.
+    """
+    pth_file = tmp_path / "_whatever_editable_loader.py"
+    pth_file.write_text(
+        "hello=1\ninstall({'whatever', 'hello'}, '/path/to/build', ['/tmp/ninja'], False)",
+    )
+    assert _handle_editable_module(pth_file) == [Path("/path/to/build/src")]
+
+
 @pytest.mark.parametrize(
     ("first", "second", "find_stubs", "expect"),
     [