fix(check): SPDX license string; E501 off in tests (device-types pilot)

The pilot's build warned that setuptools refuses a license table and
License classifiers from 2027-02-18 (PEP 639); check now reports both and
the template builds with setuptools>=77. Recorded device output in tests
keeps its lines, so the template turns E501 off under tests/.

CHANGELOG.md

@@ -5,6 +5,13 @@ The format follows [Keep a Changelog](https://keepachangelog.com/), versions fol
 
 ## [Unreleased]
 
+### Changed
+- `check` reports a license given as a TOML table or as a `License ::` classifier:
+  setuptools refuses both from 2027-02-18 (PEP 639). The template builds with
+  setuptools>=77.
+- E501 is off under `tests/`: recorded device output keeps its lines (found in the
+  device-types pilot).
+
 ## [0.1.0] - 2026-10-22
 
 ### Added

STANDARDS.md

@@ -101,7 +101,9 @@ A pull request without tests for what it adds or changes is not merged.
 
 ## 5. Clean code
 
-- **Format and lint:** `ruff format` and `ruff check`, line length 100.
+- **Format and lint:** `ruff format` and `ruff check` with `E, F, I, UP, B`, line length
+  100. Only under `tests/` may a line be longer (E501 off there): recorded device output
+  keeps its lines.
 - **Types:** every public function is annotated; `mypy --strict` (§6 for the old code).
 - **Small functions:** under 30 lines recommended, 50 at most; cyclomatic
   complexity 10 at most. One function does one thing.
@@ -165,7 +167,8 @@ release tags:
   someone else gets a descriptive one instead. The `napalm.drivers` entry point
   names do not change with the package name.
 - **`pyproject.toml`** declares `name`, `version`, `description`, `readme`,
-  `license = "Apache-2.0"`, `requires-python = ">=3.10"`, the dependencies, a
+  `license = "Apache-2.0"` (an SPDX string, PEP 639; no table, no `License ::`
+  classifier, `setuptools>=77`), `requires-python = ">=3.10"`, the dependencies, a
   `dev` extra, `[project.urls]` with `Repository` (and `Issues`) on
   `https://git.netork.io/NAPALM/…`, and the `napalm.drivers` entry points.
 - **Dependencies are ranges with true floors.** A driver is a library: it never pins

napalm_standard/check.py

@@ -77,6 +77,11 @@ def _metadata(repo: Repo) -> Iterator[Finding]:
     for field in REQUIRED_FIELDS:
         if not repo.project.get(field):
             yield Finding("metadata", f"[project] has no {field}")
+    # PEP 639: setuptools refuses the table form and license classifiers from 2027-02-18.
+    if isinstance(repo.project.get("license"), dict):
+        yield Finding("metadata", 'license must be an SPDX string: license = "Apache-2.0"')
+    if any(c.startswith("License ::") for c in repo.project.get("classifiers", [])):
+        yield Finding("metadata", "drop the License :: classifier; the SPDX license says it")
 
 
 def _python(repo: Repo) -> Iterator[Finding]:

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=68"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]

template/pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=68"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -43,6 +43,10 @@ target-version = "py310"
 [tool.ruff.lint]
 select = ["E", "F", "I", "UP", "B"]
 
+[tool.ruff.lint.per-file-ignores]
+# Recorded device output keeps its lines.
+"tests/**" = ["E501"]
+
 [tool.mypy]
 python_version = "3.10"
 strict = true

tests/conftest.py

@@ -10,7 +10,7 @@ import pytest
 
 PYPROJECT = """\
 [build-system]
-requires = ["setuptools>=68"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]

tests/test_check.py

@@ -51,10 +51,28 @@ def test_a_missing_project_field_is_reported(make_repo: RepoFactory, field: str)
     assert field in findings[0].message
 
 
-def test_a_license_table_is_accepted(make_repo: RepoFactory) -> None:
-    pyproject = PYPROJECT.replace('license = "Apache-2.0"', 'license = { text = "Apache-2.0" }')
+@pytest.mark.parametrize(
+    "license_line",
+    ['license = { text = "Apache-2.0" }', 'license = { file = "LICENSE" }'],
+)
+def test_a_license_table_is_reported(make_repo: RepoFactory, license_line: str) -> None:
+    """setuptools refuses the table form from 2027-02-18 (PEP 639)."""
+    pyproject = PYPROJECT.replace('license = "Apache-2.0"', license_line)
 
-    assert check_repo(make_repo({"pyproject.toml": pyproject})) == []
+    findings = check_repo(make_repo({"pyproject.toml": pyproject}))
+
+    assert rules(findings) == {"metadata"}
+    assert "SPDX" in findings[0].message
+
+
+def test_a_license_classifier_is_reported(make_repo: RepoFactory) -> None:
+    pyproject = PYPROJECT.replace(
+        'requires-python = ">=3.10"\n',
+        'requires-python = ">=3.10"\n'
+        'classifiers = ["License :: OSI Approved :: Apache Software License"]\n',
+    )
+
+    assert rules(check_repo(make_repo({"pyproject.toml": pyproject}))) == {"metadata"}
 
 
 @pytest.mark.parametrize("spec", [">=3.8", ">=3.9", ""])