/nix/store/6gpm9yb90cflindawcxm7ba0g0l6liaj-python3.9-pluggy-1.0.0/lib/python3.9/site-packages/pluggy/_hooks.py:265: in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
/nix/store/6gpm9yb90cflindawcxm7ba0g0l6liaj-python3.9-pluggy-1.0.0/lib/python3.9/site-packages/pluggy/_manager.py:80: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
/nix/store/09sk6r94sgyvb5695y5gz5jl1d97iff4-python3.9-pytest-6.2.5/lib/python3.9/site-packages/_pytest/python.py:249: in pytest_pycollect_makeitem
    res = list(collector._genfunctions(name, obj))
/nix/store/09sk6r94sgyvb5695y5gz5jl1d97iff4-python3.9-pytest-6.2.5/lib/python3.9/site-packages/_pytest/python.py:470: in _genfunctions
    self.ihook.pytest_generate_tests.call_extra(methods, dict(metafunc=metafunc))
/nix/store/6gpm9yb90cflindawcxm7ba0g0l6liaj-python3.9-pluggy-1.0.0/lib/python3.9/site-packages/pluggy/_hooks.py:292: in call_extra
    return self(**kwargs)
/nix/store/6gpm9yb90cflindawcxm7ba0g0l6liaj-python3.9-pluggy-1.0.0/lib/python3.9/site-packages/pluggy/_hooks.py:265: in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
/nix/store/6gpm9yb90cflindawcxm7ba0g0l6liaj-python3.9-pluggy-1.0.0/lib/python3.9/site-packages/pluggy/_manager.py:80: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
conftest.py:62: in pytest_generate_tests
    metafunc.parametrize('attribute', generate_attributes(debug_str))
conftest.py:52: in generate_attributes
    graph = run_cmd_parse_json(f"nix eval --json --arg debug {debug_str} -f ci.nix 'pkgs-to-build-with-deps'")
conftest.py:18: in run_cmd_parse_json
    raise Exception(f'Process failed (returned {p.returncode})')
E   Exception: Process failed (returned 1)