Strange. How do things like Nix work then? The nix builders are network isolated. Most (all?) Gentoo packages can also be built without network access. That see

Strange. How do things like Nix work then? The nix builders are network isolated. Most (all?) Gentoo packages can also be built without network access. That seems like it should cover a decent proportion of modern software. Instances where an air gapped build machine doesn't work are examples of developer laziness, not bothering to properly document dependencies.