Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....

Fix Python Permission Denied When Installing Packages on Windows
You run pip install somepackage on Windows and get a PermissionError

Fix Docker Build Context Canceled by Symlink Errors
If you see context canceled during a docker build and you have symlinks...

Fix Git Clone Connection Timed Out Due to Proxy Settings
You run git clone https://github.com/example/repo.git and after a long pause you get...

Fix npm install Incompatible Node Version Errors
When you run npm install and get an error about an incompatible Node.js version, it ...

Git Merge Unrelated Histories Without Losing Commits
You've cloned a repo, added a new remote, and now you need to merge two branches that don'...