Don't require setuptools_rust at runtime (#13952)

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David Robertson 2022-09-29 21:16:08 +01:00 committed by GitHub
parent 15754d720f
commit 6f0c3e669d
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3 changed files with 35 additions and 3 deletions

1
changelog.d/13952.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug introduced in v1.68.0 where Synapse would require `setuptools_rust` at runtime, even though the package is only required at build time.

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@ -66,6 +66,21 @@ def _is_dev_dependency(req: Requirement) -> bool:
)
def _should_ignore_runtime_requirement(req: Requirement) -> bool:
# This is a build-time dependency. Irritatingly, `poetry build` ignores the
# requirements listed in the [build-system] section of pyproject.toml, so in order
# to support `poetry install --no-dev` we have to mark it as a runtime dependency.
# See discussion on https://github.com/python-poetry/poetry/issues/6154 (it sounds
# like the poetry authors don't consider this a bug?)
#
# In any case, workaround this by ignoring setuptools_rust here. (It might be
# slightly cleaner to put `setuptools_rust` in a `build` extra or similar, but for
# now let's do something quick and dirty.
if req.name == "setuptools_rust":
return True
return False
class Dependency(NamedTuple):
requirement: Requirement
must_be_installed: bool
@ -77,7 +92,7 @@ def _generic_dependencies() -> Iterable[Dependency]:
assert requirements is not None
for raw_requirement in requirements:
req = Requirement(raw_requirement)
if _is_dev_dependency(req):
if _is_dev_dependency(req) or _should_ignore_runtime_requirement(req):
continue
# https://packaging.pypa.io/en/latest/markers.html#usage notes that

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@ -40,7 +40,10 @@ class TestDependencyChecker(TestCase):
def mock_installed_package(
self, distribution: Optional[DummyDistribution]
) -> Generator[None, None, None]:
"""Pretend that looking up any distribution yields the given `distribution`."""
"""Pretend that looking up any package yields the given `distribution`.
If `distribution = None`, we pretend that the package is not installed.
"""
def mock_distribution(name: str):
if distribution is None:
@ -81,7 +84,7 @@ class TestDependencyChecker(TestCase):
self.assertRaises(DependencyException, check_requirements)
def test_checks_ignore_dev_dependencies(self) -> None:
"""Bot generic and per-extra checks should ignore dev dependencies."""
"""Both generic and per-extra checks should ignore dev dependencies."""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1; extra == 'mypy'"],
@ -142,3 +145,16 @@ class TestDependencyChecker(TestCase):
with self.mock_installed_package(new_release_candidate):
# should not raise
check_requirements()
def test_setuptools_rust_ignored(self) -> None:
"""Test a workaround for a `poetry build` problem. Reproduces #13926."""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["setuptools_rust >= 1.3"],
):
with self.mock_installed_package(None):
# should not raise, even if setuptools_rust is not installed
check_requirements()
with self.mock_installed_package(old):
# We also ignore old versions of setuptools_rust
check_requirements()