In practice, for more "modern" projects, it works fine: they tend to have good hygiene anyway. For Rust projects, for example, you .gitignore the target directo

In practice, for more "modern" projects, it works fine: they tend to have good hygiene anyway. For Rust projects, for example, you .gitignore the target directory, and you're good for 99% of projects (and cargo new already generates said ignore.) For older projects that leave temporary files everywhere, or for workflows that may generate intermediate files (like coredumps are often generated in the cwd and not somewhere easily ignored), it can be a pain. However, in the next release, a feature related to this has landed: you can add a configuration, `snapshot.auto-track="none()"`, to turn off automatically tracking files, and then `jj track` individual paths (with globs, of course), if you prefer that workflow.