building Nix...
building the system configuration...
warning: error: unable to download 'https://cache.nixos.org/9bx3zk8m0d1gkfbqfmfxxpaib4nlda22.narinfo': Couldn't resolve host name (6); retrying in 349 ms
warning: error: unable to download 'https://cache.nixos.org/9bx3zk8m0d1gkfbqfmfxxpaib4nlda22.narinfo': Couldn't resolve host name (6); retrying in 538 ms
warning: error: unable to download 'https://cache.nixos.org/9bx3zk8m0d1gkfbqfmfxxpaib4nlda22.narinfo': Couldn't resolve host name (6); retrying in 1344 ms
warning: error: unable to download 'https://cache.nixos.org/9bx3zk8m0d1gkfbqfmfxxpaib4nlda22.narinfo': Couldn't resolve host name (6); retrying in 2075 ms
error: unable to download 'https://cache.nixos.org/9bx3zk8m0d1gkfbqfmfxxpaib4nlda22.narinfo': Couldn't resolve host name (6)