these 13 derivations will be built:
  /nix/store/cwrnhdi1531d39gll0a29d5j7n4z304h-unit-postgresql.service.drv
  /nix/store/4wcr9jsp53dk5sb06q6c0gj1y8783vgr-postgresql-migrate.drv
  /nix/store/f7b2s389vwd6yvw1639nihsg6v141gmm-unit-postgresql-migrate.service.drv
  /nix/store/jr7zcj825xpzjkvq68ig86cxiy7lpq9g-system-units.drv
  /nix/store/7lmph6irklqzq0yj2p7davas9fx48d2w-etc.drv
  /nix/store/m2ccj8dz4r3x78p1107gs6hgggqd3ks4-activate.drv
  /nix/store/zy17lhqg0hq1xs04c7b1nx5adqbdf6i8-nixos-system-server-test.drv
  /nix/store/rr2qcrn37wnkbrg7z289nrsycxnwm5qg-nixos-system-server-test.drv
  /nix/store/grkhf6cz1dyf6fxdk197yxs40lwadm6y-closure-info.drv
  /nix/store/d362vyidkd24prmr6m6yaqmgb42mpd8g-run-nixos-vm.drv
  /nix/store/kcsasm2wra1lnjx5vn7pdpz2zkhvdbs1-nixos-vm.drv
  /nix/store/166j8hmy59x20sda7wrbk4z8pfm9rl2p-nixos-test-driver-amcheck-upgrade.drv
  /nix/store/z19rjlcllndbkvxprxgwsivddlxa5r0z-vm-test-run-amcheck-upgrade.drv