alt Hacker NewsThis. I feel jj is some years too late.
It tries to solve a human problem in an LLM era.
LLMs are destined to overcome humans in code merging and change versioning (already did for me).
There's little point to introducing yet another layer of indirection when LLMs just cut to the chase.
A lot of humans don't currently trust agents to touch VCS today. I also find that my agent tends to be much better about dealing with jj than it is with git.