> (One could think of an even finer grained approach that would track changes in individual functions or classes and thus recompile even less than a file, but I

> (One could think of an even finer grained approach that would track changes in individual functions or classes and thus recompile even less than a file, but I’m not aware of practical implementations of such an approach in industrial languages, and altogether it doesn’t seem necessary.) Lucid Energize did it: https://www.youtube.com/watch?v=pQQTScuApWk https://www.youtube.com/watch?v=pQQTScuApWk Incomplete source code: https://archive.org/details/archiveteam-lucid-collection https://archive.org/details/archiveteam-lucid-collection