132 lines
2.3 KiB
Markdown
132 lines
2.3 KiB
Markdown
---
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marp: false
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theme: gaia
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footer: '**Fabien Freling** - 2025-02-17'
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paginate: true
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---
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<style>
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section::after {
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content: attr(data-marpit-pagination) '/' attr(data-marpit-pagination-total);
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}
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</style>
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<!--
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_class: lead
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-->
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# Jujutsu
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---
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## What is it?
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* New version control software (VCS)
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* Separation of **frontend** and **backend**
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* Compatible with git
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* Slowly replacing git cli at Google (askip)
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* Aiming for a simpler workflow
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---
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## No branch, only revisions
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<revision id> <author> <date> <branch> <commit id>
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- @ working copy
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- ◆ immutable
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- × conflict
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---
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## Embrace the DETACHED HEAD
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- No need to be at the tip of a branch
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- Easy to change the current revision (no rebase step)
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- Each revision has a scope, you can switch / split / squash
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- You can modify other branches, not only the current one (there is none)
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---
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## Immutable revisions
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- New concept
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- By default `master` is immutable, sane choice
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- Clearly express what would create conflict, even local copy cannot change
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- You can override it (but don't)
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---
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## No staging area, everything is logged
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- You need a good gitignore
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- You can always switch commits without loss
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- You might want to recreate a "staging" commit
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---
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## Conflicts are ok
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- Conflicts are recorded but never stop a rebase
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- Conflicted commits are annotated
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- You can safely rebase, deal with conflicts later on
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- No need to mark as resolved
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---
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## Branches, bookmarks
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- Branches (git) = bookmarks (jujutsu)
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- Optional during dev
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- Mandatory when pushing
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- Stick to revision, manual step to update
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- Tracked bookmarks are updated during fetch
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- No sync conflict between a local copy and its remote
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---
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## Back to git?
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- A way back is always possible
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- git view gets confused in detached HEAD
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---
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## Tooling
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- Battery included
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- CLI tool for splitting commits
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- Git tools not compatible
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---
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## Takeaway
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- 🤩 Good when dealing with multiple tracks
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- 😔 Need to explicitely specify branch when pushing commits
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- Small improvements, not game-changing
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- 😔 No ecosystem, but it's growing (TUI)
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- Native backend (not ready yet) would remove a lot of friction
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---
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<!--
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_class: lead
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-->
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## Worth the switch?
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# ✋ Not yet
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---
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# References
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- [Official website](https://jj-vcs.github.io/jj/)
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- [GUI & TUI](https://github.com/jj-vcs/jj/wiki/GUI-and-TUI)
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