To rebuild and switch to new build:
sudo nixos-rebuild switch --flake .#
We can build and test our nixos environment inside virtual machine.
nix build ./#nixosConfigurations.vm.config.system.build.vm
Start virtual machine with:
./result/bin/run-nixos-vm
To be able to connect via SSH, we have to forward port 2222 to 22:
QEMU_NET_OPTS="hostfwd=tcp::2222-:22" ./result/bin/run-nixos-vm
Now we can ssh to the vm:
ssh -p 2222 nixos@localhost