You're supposed to use the installer image to partition the disk, create a configuration, then run nixos-install; instructions are at https://nixos.org/manual/n

You're supposed to use the installer image to partition the disk, create a configuration, then run nixos-install; instructions are at https://nixos.org/manual/nixos/stable/index.html#sec-installation https://nixos.org/manual/nixos/stable/index.html#sec-install.... It's not too bad.