these 4 derivations will be built:
  /nix/store/akar3prdvw016b2pkk2crz288dlc1q5w-system-units.drv
  /nix/store/0b1q5vvky62n2waa14blvif5z03y9l3p-etc.drv
  /nix/store/rp7ady7wk4qr5zafi4nqzgkzaaqd7qlr-activate.drv
  /nix/store/6rjnky3g1b3f21yxisn95skgaj7hxg9v-nixos-system-thought-26.11.19800101.70ce234.drv