# NousResearch/hermes-agent · Python 3.12 FakePath test compatibility fix

## Open now

- Nothing open on GitHub.

A bug was identified where a FakePath subclass used in tests fails on Python 3.12, causing TestEnsureUserSystemdEnv to malfunction. The related items address replacing FakePath with monkeypatching or patching Path.exists for compatibility.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #2444. Verify it addresses your case.
- **Recommended:** read PR #2444 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-2444`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #2243: bug(tests): TestEnsureUserSystemdEnv fails on Python 3.12 — FakePath subclass ignores redirected path in __new__

## Prior & competing PRs

- **#2444: fix(tests): replace FakePath with monkeypatch for Python 3.12 compat**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/hermes_cli/test_gateway_service.py`
- **#2244: fix(tests): replace FakePath subclass with Path.exists patch for Python 3.12 compatibility**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#2261`, `#2444`
- **#2261: fix(tests): replace FakePath subclass with monkeypatch for Python 3.12 compat**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#2444`

## Fix status

- Merged to main in PR #2444 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-03-22`. This confirmation is old and may be out of date (a revert/reopen would not have invalidated it here); re-verify.
- Subsystem: `hermes_cli`