Checklists for software errors, setup, and tool workflows.

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Git Merge Conflict Checklist Before Merging

You're about to merge a branch, but you've been burned by merge conflicts before. This ch...

Fixing Python Memory Errors When Processing Large Files on 64-bit

If you're hitting a MemoryError in Python while reading or processing a large fi...

Fix Nginx Upstream Connection Refused Behind Cloudflare

If you see upstream connection refused in your Nginx error logs while using Cloudfla...

Fix Nginx Upstream Connection Refused in Docker

You have Nginx running, either on the host or in a container, proxying to another Docker containe...

How to Fix 'Git Remote Origin Already Exists' Error

When working with Git, you may encounter the error fatal: remote origin already exists

Pip Externally Managed Environment vs Virtual Environment: Fixes
You try to install a Python package with pip, and get an error like error: externally-manag...