jj-version-control

Apps & Automation

How to use `jj`, the Jujutsu version control system

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How to use this skill

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/ahmedelgabri/dotfiles/blob/HEAD/config/claude/skills/jj-version-control/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/jj-version-control/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Jujutsu (`jj`)

Jujutsu (or, simply, jj) is a Git-compatible version control system that is usually used in "colocated" form (that is, alongside the .git directory in the repository, there will also be a .jj directory; the presence of the latter can be used to infer that you are in a jj repository). When in a jj repository, you can still use Git commands to examine objects in the repository (for example, commands like git show, git log, and git grep) but when creating commits you should use jj commands.

Jujutsu's most distinctive feature is that it does not have a staging area. Any time you run a jj command, it will automatically create a snapshot of the working directory. jj respects .gitignore files and will not include them in snapshots. To stop tracking a file that was unintentionally included in a snapshot, modify .gitignore then use jj file untrack <file>....

Common commands

Command	Description
`jj st`	Show summary of working copy changes
`jj diff`	Show diff of working copy changes
`jj diff --git`	Show git Git-compatible diff of working copy changes
`jj log`	Show graph of commits (by default, only unpushed commits)
`jj evolog`	Show previous states (analogous to `git reflog`)
`jj op log`	Show previous operations

Specifying revisions

Revset	Header
`@`	Current revision (working copy)
`@-`	Parent of current revision
`a-`	Parent(s) of `a`
`a--`	Grandparent(s) of `a`
`a+`	Child(ren) of `a`
`::a`	Ancestors of `a` (including `a`)
`a::`	Descendents of `a` (including `a`)
`a..b`	Reachable from `b` but not from `a`
`a \| b`	Union of `a` and `b`
`a & b`	Intersection of `a` and `b`
`~a`	Not in `a`

Creating commits

For specific details on selecting which changes to include in a commit, and how to craft commit messages, see the /commit skill.

Note that you will never run jj commit without file arguments unless your user instructs you to do so; instead pass explicit files to be included.

Command	Description
`jj commit <file>...`	Create a commit containing specific changes
`jj split <file>...`	Create a commit containing specific changes (also updates bookmarks)

Interacting with Git remotes

Command	Description
`jj git fetch`	Fetch from default remote
`jj git fetch --all-remotes`	Fetch from all remotes
`jj git push`	Push to default remote
`jj git push --remote <remote>`	Push to a named remote

Custom aliases and commands

Your user has defined a number of useful aliases and commands in ~/.config/jj/config.toml, including:

Alias or command	Description
`jj gr`	Roughly equivalent to `git log --oneline --graph`
`jj o`	Roughly equivalent to `git log --oneline`
`jj oo`	Roughly equivalent to `git log --oneline -10`
`jj last`	Show latest non-empty change with a non-empty description
`jj tug`	Fast-forward closest bookmark to point at recent pushable change