Which is weird, seeing as the git license is GPL 2. I mean, I find it weird that one can build a product completely around a GPL project, and somehow not make

Which is weird, seeing as the git license is GPL 2. I mean, I find it weird that one can build a product completely around a GPL project, and somehow not make it GPL. The whole point of the GPL is to restrict derivatives. Yet, somehow this has been mutated to become "links to a library," as if the technical fact that the product links to some code over an API boundary is different, legally speaking, than calling it with arguments over a process boundary. The point of the GPL was supposed to be about derivative products, that is code that depends non-optionally on other code. Whether it depends on that code via linking, calling exec(), or sending HTTP requests, it shouldn't be legal to write a non-open-source application that depends on a GPL program to do anything useful.