[toyg]

> Including code in your code would always be a copyright violation.

Well, not quite - shipping code with your code would be, because that is direct distributing. But if I ship a script to download your GPL library from PYPI and just use it as it comes, the argument on whether my application is a "derivative" of yours, is not an easy one.

[regularfry]

It's potentially not an easy one in law, but it is one that the GPL is explicitly intended to capture. The only question is whether it has successfully done so (and that actually depends on the specifics of the usage, as I understand it).