I didn't know about entr as well but I'm using fswatch which is largely similar and portable as well, supporting not only Linux and BSD but also non-WSL Windows

I didn't know about entr as well but I'm using fswatch which is largely similar and portable as well, supporting not only Linux and BSD but also non-WSL Windows and Solaris too, and leveraging the Filesystem Event API on macOS. https://github.com/emcrisostomo/fswatch https://github.com/emcrisostomo/fswatch