jj Workflow Skill

What is jj?

jj (Jujutsu) is a Git-compatible version control system with a simpler mental model for history editing.

When to use jj:

• Working on multiple features that touch overlapping files
• Maintaining stacks of dependent PRs
• Frequently reordering, squashing, or splitting commits
• You want to split changes after-the-fact rather than commit perfectly upfront

Why jj over Git:

• No staging area complexity - working copy is always a commit
• Edit any commit and descendants auto-rebase
• Conflicts are first-class - defer resolution, operations don't stop
• Every operation is undoable with jj undo
• Splitting commits is trivial with jj split