

Thought I would mention Guix. I don’t know about using it as an OS but just the package manager is so nice to build reproducible software environments (although disclaimer I discovered this myself a few weeks ago). At least as close you can get without including proprietary hardware drivers. Building MPI applications on my laptop and moving them to an HPC cluster with full performance feels like magic.
From the Danish media: https://nyheder.tv2.dk/business/2025-03-14-usa-beder-danmark-om-hjaelp
There are a few additional points
Multiple European countries have gotten similar requests, not just Denmark
American egg policy requires washing the eggs while European policy prohibits this, making it highly inconvenient.
They would want assurance that America won’t suddenly put tariffs on the eggs.
If america were to pay upwards of 1€ per egg, maybe they’d have a deal.