system_packages.py DOX

Purpose

• Own the system_packages.py helper module.
• This module runs apt operations with retry behavior.
• Keep this file-level DOX profile synchronized with system_packages.py because this directory is intentionally flat.

Ownership

• system_packages.py owns the runtime implementation.
• system_packages.py.dox.md owns durable notes about responsibilities, contracts, side effects, and verification for that implementation.
• Top-level functions:
• run_apt_with_retries(runner: Callable[[], subprocess.CompletedProcess[str]], lock_timeout_seconds: int=..., retry_seconds: int=...) -> subprocess.CompletedProcess[str]: Run an apt/dpkg command, serializing in-process callers and waiting out apt locks.
• is_apt_lock_error(result: subprocess.CompletedProcess[str]) -> bool
• Notable constants/configuration names: APT_LOCK_TIMEOUT_SECONDS, APT_LOCK_RETRY_SECONDS.

Runtime Contracts

• Helper modules own reusable framework APIs and must preserve public callers unless all callers, tests, and docs are updated together.
• Update this file whenever public functions, classes, persistence behavior, path/security assumptions, side effects, or cross-module contracts change.
• Observed side-effect areas: subprocess/runtime control.
• Imported dependency areas include: __future__, subprocess, threading, time, typing.

Key Concepts

• Important called helpers/classes observed in the source: threading.RLock, lower, time.monotonic, runner, time.sleep, is_apt_lock_error.
• Keep request/response, tool, or helper semantics documented here at the same time as source changes.

Work Guidance

• Preserve public helper APIs used by core code and plugins unless every caller is updated.
• Keep path, auth, secret, persistence, network, and subprocess behavior explicit and bounded.
• Prefer adding cohesive helper functions here only when behavior is reused across modules.

Verification

• Run targeted tests for changed helper behavior; run security regressions for auth, filesystem, WebSocket, tunnel, upload, or secret-handling helpers.
• Related tests observed by source search:
  • tests/test_office_document_store.py

Child DOX Index

No child DOX files.