Copy config from the iso

Copy network config

Copy the network config from the minimal installer into the new NixOS install:

mkdir -p /mnt/etc/NetworkManager/system-connections
cp /etc/NetworkManager/system-connections/bootstrap-wifi.nmconnection \
   /mnt/etc/NetworkManager/system-connections/primary-wifi.nmconnection

Copy SSH pubkeys

Copy the SSH pubkeys from the minimal installer into the new NixOS system:

mkdir -p /mnt/etc/ssh/authorized_keys.d
cp /etc/ssh/authorized_keys.d/root /mnt/etc/ssh/authorized_keys.d/root