A bunch of other excellent similar projects have been linked here, and here's mine - a general purpose tool that lets you put together flexible responses to fil

A bunch of other excellent similar projects have been linked here, and here's mine - a general purpose tool that lets you put together flexible responses to file system change: https://github.com/cortesi/modd https://github.com/cortesi/modd The use case here is deep and interesting, and I don't know of any tool that gets it 100% right. HN is often quick to grumble about reinventing the wheel, but where there is no clearly correct solution I think we should encourage experimentation. Modd is my opinionated take: it differs from other tools by trying to have a "proper" configuration language in which you can embed shell commands, by separating prep commands (that run and complete) and daemons (that run, but might need to be restarted on change), and by being completely agnostic about languages, test methodologies and other specificities of external tools.