Jujutsu: A Haven for Mercurial Users at Mozilla

Jujutsu is a new version control system developed by Martin Von Zweigbergk, aimed at providing a modern alternative for users familiar with Mercurial. As Mozilla transitions from Mercurial to Git, Jujutsu offers a compelling option for those who appreciate Mercurial's features but seek improved performance and functionality. Jujutsu integrates Git as a backend, allowing users to work within existing Git repositories without disrupting the workflow of others. It retains familiar concepts from Mercurial, such as immutable commits and history editing, while introducing enhancements like static change IDs and a user-friendly interface. The system simplifies operations like history rewriting and conflict resolution, making it easier for users to manage changes. Jujutsu also features an operation log that records commands, allowing users to revert to previous states easily. While it shares some limitations with Mercurial, such as incomplete template and revset languages, it is designed to evolve and improve over time. Overall, Jujutsu represents a significant advancement for Mercurial users, combining the best of both worlds in a modern version control system.

- Jujutsu is a new version control system developed for users transitioning from Mercurial to Git.

- It integrates Git as a backend, allowing seamless use within existing Git repositories.

- The system enhances features like history editing and conflict resolution while maintaining familiar Mercurial concepts.

- Jujutsu includes an operation log for easy command tracking and state restoration.

- It aims to evolve and improve, addressing current limitations over time.