Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

If you're seeing error: externally-managed-environment when trying to pip ...

Handling Missing Peer Dependencies in pnpm Install
When you run pnpm install and see warnings about missing peer dependencies, your pro...

Fix npm install Permission Denied in CI/CD Pipelines
When your CI/CD pipeline fails with EACCES: permission denied during npm insta...

Fix pnpm ERR_PNPM_NO_OFFLINE_META: Step-by-Step Guide
You run pnpm install and see ERR_PNPM_NO_OFFLINE_META. This usually hap...

Python Virtual Environment Not Activating on Mac: Fixes
You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...

Fix Nginx 502 Bad Gateway with Docker and PHP-FPM
You have a Docker setup with Nginx proxying to a PHP-FPM container, and you're getting a 502 ...