#124 fix: declare PyYAML runtime dependency

[Anonymous]

Originally created by: TheoV823

Root cause

mneme/adr_parser.py does a top-level import yaml, but PyYAML was absent from the project's declared runtime dependencies. On a fresh CI runner pip install -e mneme-project-memory succeeded but PyYAML was never installed, so python -m mneme.cli crashed at import time with ModuleNotFoundError: No module named 'yaml' — producing UNKNOWN verdicts on every file in PR [#110]'s mneme-check run (the run that [#102] made visible).

Local dev environments masked the gap because PyYAML was installed as a transitive of unrelated tools.

Change

One line in mneme-project-memory/pyproject.toml:

dependencies = [
    "anthropic>=0.25.0",
    "python-dotenv>=1.0.0",

+   "PyYAML>=6.0",
]

Scope

• No code paths touched.
• No governance, benchmark, retrieval, or CLI semantics changed.
• No README/ADR/site/docs edits.
• No test infrastructure changes (intentionally out of scope per direction).

Validation

Clean-venv reproduction:

$ python -m venv /tmp/v && /tmp/v/bin/python -c "import yaml"
ModuleNotFoundError: No module named 'yaml'

$ /tmp/v/bin/python -m pip install -e mneme-project-memory
$ /tmp/v/bin/python -c "import yaml; print(yaml.__version__)"
6.0.3

$ /tmp/v/bin/python -m mneme.cli --help
usage: mneme [-h] {list_decisions,add_decision,test_query,check,cursor,benchmark,adr} ...

$ /tmp/v/bin/python -m mneme.cli check --memory .mneme/project_memory.json \
    --input site/insights/<file>.html --query "..." --mode warn
... Result: FAIL    # real verdict, not UNKNOWN

Note on this PR's own CI run

The mneme-check workflow's path filter scopes to mneme-project-memory/mneme/, docs/adr/, .mneme/, site/, scripts/. mneme-project-memory/pyproject.toml is outside that filter, so this PR's own mneme-check run will hit the no-files-in-scope branch and won't directly exercise the fix. The fix was validated in the clean-venv reproduction above; the in-the-wild confirmation will arrive on the next in-scope PR (UNKNOWN should drop to 0).

[Anonymous]

Originally posted by: github-actions[bot]

mneme self-governance check

Mode: warn - verdicts are visible but do not block merge. Rollout plan: .mneme/README.md.

No files in scope. Filter: mneme-project-memory/mneme/, docs/adr/, .mneme/, site/, scripts/.

[Anonymous]

Ticket changed by: TheoV823

• status: open --> closed