Jujutsu: a new, Git-compatible version control system

Jujutsu: a new, Git-compatible version control system

Having used Magit, a good description of the way it handles things is: "the presence of three types of tree - working copy, index, and commits - is confusing to users. Unify all three into one type of tree, and hide the difference so that as far as a Magit user is concerned, it's all just commits". They do this because commits are the fully featured type of tree, and it's trivial to convert any operation on any type of tree into "turn the tree into a commit, operate on the commit, turn the new commit back into a working copy or an index".

Jujutsu makes Magit's implementation a lot simpler, because instead of Magit having to balance all three types of tree internally, and work out the "correct" way to implement any operation for you, it can instead only implement operations on commits, and get the same advantage. It also doesn't cost any Magit features, since Magit already works this way from a user perspective.