async def lint(
wrapped_target: Flake8Target,
flake8: Flake8,
python_setup: PythonSetup,
subprocess_encoding_environment: SubprocessEncodingEnvironment,
) -> LintResult:
if flake8.options.skip:
return LintResult.noop()
target = wrapped_target.target
# NB: Flake8 output depends upon which Python interpreter version it's run with. We ensure that
# each target runs with its own interpreter constraints. See
# http://flake8.pycqa.org/en/latest/user/invocation.html.
interpreter_constraints = PexInterpreterConstraints.create_from_adaptors(
adaptors=[target] if isinstance(target, PythonTargetAdaptor) else [],
python_setup=python_setup
)
config_path: Optional[str] = flake8.options.config
config_snapshot = await Get[Snapshot](
PathGlobs(include=tuple([config_path] if config_path else []))
)
requirements_pex = await Get[Pex](
CreatePex(
output_filename="flake8.pex",
requirements=PexRequirements(requirements=tuple(flake8.get_requirement_specs())),
interpreter_constraints=interpreter_constraints,
entry_point=flake8.get_entry_point(),
)
)
merged_input_files = await Get[Digest](
DirectoriesToMerge(
directories=(
target.sources.snapshot.directory_digest,
requirements_pex.directory_digest,
config_snapshot.directory_digest,
)
),
)
request = requirements_pex.create_execute_request(
python_setup=python_setup,
subprocess_encoding_environment=subprocess_encoding_environment,
pex_path=f'./flake8.pex',
pex_args=generate_args(wrapped_target, flake8),
input_files=merged_input_files,
description=f'Run Flake8 for {target.address.reference()}',
)
result = await Get[FallibleExecuteProcessResult](ExecuteProcessRequest, request)
return LintResult.from_fallible_execute_process_result(result)
def generate_args(wrapped_target: Flake8Target, flake8: Flake8) -> Tuple[str, ...]:
args = []
if flake8.options.config is not None:
args.append(f"--config={flake8.options.config}")
args.extend(flake8.get_args())
args.extend(sorted(wrapped_target.target.sources.snapshot.files))
return tuple(args)