Support Poetry projects that use PEP 621

noxfile.py

@@ -168,7 +168,11 @@ def mypy(session: Session) -> None:
 @session
 @nox.parametrize(
     "python,poetry",
-    [(python_versions[0], "1.0.10"), *((python, None) for python in python_versions)],
+    [
+        (python_versions[0], "poetry==1.0.10"),
+        (python_versions[0], "poetry @ git+https://github.com/radoering/poetry.git@pep621-support"),
+        *((python, None) for python in python_versions),
+    ],
 )
 def tests(session: Session, poetry: Optional[str]) -> None:
     """Run the test suite."""
@@ -184,7 +188,7 @@ def tests(session: Session, poetry: Optional[str]) -> None:
 
     if poetry is not None:
         session.run_always(
-            "python", "-m", "pip", "install", f"poetry=={poetry}", silent=True
+            "python", "-m", "pip", "install", poetry, silent=True
         )
 
     try:

src/nox_poetry/poetry.py

@@ -34,11 +34,12 @@ def __init__(self, project: Path) -> None:
         text = path.read_text(encoding="utf-8")
         data: Any = tomlkit.parse(text)
         self._config = data["tool"]["poetry"]
+        self._pyproject = data.get("project", {})
 
     @property
     def name(self) -> str:
         """Return the package name."""
-        name = self._config["name"]
+        name = self._config.get("name", self._pyproject.get("name"))
         assert isinstance(name, str)  # noqa: S101
         return name
 

tests/functional/data/pep-621/pyproject.toml

@@ -0,0 +1,11 @@
+[project]
+name = "pep-621-pyproject"
+version = "0.1.0"
+description = ""
+authors = [{ name = "Your Name", email = "<you@example.com>" }]
+requires-python = ">=3.7"
+dependencies = ["pyflakes>=2.1.1"]
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"

tests/functional/test_session.py

@@ -188,3 +188,24 @@ def test(session: nox_poetry.Session) -> None:
     packages = list_packages(project, test)
 
     assert set(expected) == set(packages)
+
+
+@pytest.mark.skipif(
+    Version(version("poetry")) < Version("1.9"),
+    reason="Poetry < 1.9 does not support dependency groups",
+)
+def test_pep621_pyproject_support(shared_datadir: Path) -> None:
+    """It installs packages from PEP 621 pyproject.toml."""
+    project = Project(shared_datadir / "pep621-pyproject")
+
+    @nox_poetry.session
+    def test(session: nox_poetry.Session) -> None:
+        """Install the dependencies."""
+        session.install(".")
+
+    run_nox_with_noxfile(project, [test], [nox_poetry])
+
+    expected = [project.package, *project.locked_packages]
+    packages = list_packages(project, test)
+
+    assert set(expected) == set(packages)