It's going to be a headache if America and Europe can't share code and we see the balkanization of Linux and FOSS in general. Developers, many who work for free, will potentially have a whole lot of hoops to jump through to submit (or accept) code, and there's the potential for them to commit serious crimes without even realizing it.

Yes it's great for sovereignty, but I really hope it doesn't get to that point.

The thing about copyleft FOSS however is that the code is almost certainly available, can be vetted by any nation, and accepted into any digital sovereignty framework.

If what we were talking about here are proprietary (or "closable" non-copyleft) codebases atop proprietary protocols, then yes, we're doomed.