E       Engine traceback:
E         in select
E           ..
E         in internal_plugins.foo.foobar.export_dependencies
E           `my-goal` goal
E         in pants.engine.internals.graph.resolve_targets
E           ..
E         in pants.engine.internals.graph.resolve_unexpanded_targets
E           ..
E         in pants.engine.internals.graph.resolve_dependencies
E           Resolve direct dependencies of target - project/moduleA.py
E         in pants.backend.python.dependency_inference.rules.infer_python_dependencies_via_source
E           Inferring Python dependencies by analyzing source
E         in pants.backend.python.dependency_inference.parse_python_dependencies.parse_python_dependencies
E           ..
E         in pants.backend.python.util_rules.pex.find_interpreter
E           Find Python interpreter for constraints - CPython<4,>=3.7
E         in pants.engine.process.fallible_to_exec_result_or_raise
E           ..
E         in pants.backend.python.util_rules.pex_cli.setup_pex_cli_process
E           ..
E         in pants.backend.python.util_rules.pex_environment.find_pex_python
E           Prepare environment for running PEXes
E         in pants.core.util_rules.system_binaries.find_python
E           Finding a `python` binary
E       
E       Traceback (most recent call last):
E         File "/var/tmp/username-cache/pants/named_caches/pex_root/venvs/s/dacfc6a3/venv/lib64/python3.9/site-packages/pants/engine/internals/selectors.py", line 593, in native_engine_generator_send
E           res = func.send(arg)
E         File "/var/tmp/username-cache/pants/named_caches/pex_root/venvs/s/dacfc6a3/venv/lib64/python3.9/site-packages/pants/core/util_rules/system_binaries.py", line 646, in find_python
E           raise BinaryNotFoundError(
E       pants.core.util_rules.system_binaries.BinaryNotFoundError: Was not able to locate a Python interpreter to execute rule code.
E       
E       Please ensure that Python is available in one of the locations identified by `[python-bootstrap].search_path`, which currently expands to:
E       
E       ()

@pytest.fixture
def rule_runner() -> RuleRunner:
    rule_runner = RuleRunner(
        rules=[*rules(), *core_rules(), *python_rules(), *external_tool.rules(),],
        target_types=[PythonSourcesGeneratorTarget])
    rule_runner.set_options([], env_inherit={"PATH"})
    return rule_runner