Make config/languages.json discoverable when openant-core is vendored or pip-installed standalone

[ar7casper]

Context

libs/openant-core/core/parser_adapter.py:30 resolves the shared language-detection config like this:

_LANGUAGES_CONFIG = Path(__file__).parent.parent.parent.parent / "config" / "languages.json"

Walks four .parent levels: core/parser_adapter.py → core/ → openant-core/ → libs/ → repo root → config/languages.json. Works correctly in the current monorepo layout.

The gap

The file is outside the openant-core package. If openant-core is:

• Vendored into another project at a different depth
• Pip-installed standalone (pip install openant-core someday)
• Run from a worktree at a non-standard path
• Moved during a refactor

…the four-.parent walk lands at the wrong directory and read_json(_LANGUAGES_CONFIG) raises FileNotFoundError.

Proposed approaches

Option A — Move the config inside openant-core, use importlib.resources (preferred)

Move config/languages.json to libs/openant-core/openant/config/languages.json. Update both consumers:

• Python: from importlib.resources import files; data = json.loads(files('openant.config').joinpath('languages.json').read_text())
• Go (apps/openant-cli/cmd/init.go::findLanguagesConfig): already walks from executable + cwd up to 6 levels — just update the relative path it's looking for.

Option B — Multiple search candidates with env override

Try importlib.resources first, fall back to repo-root path, then OPENANT_LANGUAGES_CONFIG env var.

Recommendation

Option A — follows Python packaging best practice. Config files that ship with the package live inside the package.

Why this is its own issue

Raised as a non-blocking Low in #40 round-1 review. #40 shipped the four-.parent walk knowing the limitation. Worth fixing eventually but doesn't block the current monorepo workflow.

References

• libs/openant-core/core/parser_adapter.py:30 — the fragile path
• apps/openant-cli/cmd/init.go::findLanguagesConfig — Go side, already more robust
• config/languages.json — the file (introduced in feat: auto-detect language in init #40)