env-isolation-pattern

What problem does it solve?

This Skill prevents production environment variables from being inherited by tests and migrations, which can accidentally connect to (and wipe) the production database.

Core Features & Use Cases

• Production-to-Test Environment Isolation: removes or overrides prod-like variables before subprocesses (pytest, alembic, migration scripts) run.
• Strong Guardrails Beyond setdefault: replaces weak os.environ.setdefault(...) with explicit unsetting and unconditional overrides at import time.
• Practical Deployment Scenarios: supports local wrappers, CI/CD pipelines, supervisor/export flows, and container-based isolation to eliminate the most common leak paths.

Quick Start

Tell the Skill to generate a safe test runner and conftest isolation snippet that unsets all prod-prefixed environment variables and forces test-only DB and secret values for your stack.