these 13 derivations will be built:
  /nix/store/3hq0c2mb1951np1qvv4lmy4jdgp048g1-unit-postgresql.service.drv
  /nix/store/y9q25vgygg9h0h3mkjvhrfqzdqx9lxvc-postgresql-migrate.drv
  /nix/store/kdi6mf30ir7k7vl2slydma5x91imr6hb-unit-postgresql-migrate.service.drv
  /nix/store/2yl2v29a2wlzpyhca4klkijpif4lx7fi-system-units.drv
  /nix/store/9sjh3djp9aq81m0h5gqvj1p10c56dxqa-etc.drv
  /nix/store/98arlw7gji4dc32hg8rjgv3968qb7bhl-activate.drv
  /nix/store/qb0lryvli6hym92d1x3wyb1s2wq98f35-nixos-system-server-test.drv
  /nix/store/rs0l5kfc40hflid7dbvdnzr7grdgyxg5-nixos-system-server-test.drv
  /nix/store/z4yzmca3z2kqgn0r8vw64j864ds6ip69-closure-info.drv
  /nix/store/l3f84m1llbgyxkkc0rw43cq6bd26jqaa-run-nixos-vm.drv
  /nix/store/h13ghznxrq99wyv2ch2qvp5w608yijs7-nixos-vm.drv
  /nix/store/3652dg3kzxj11vl4r0zrbdgdaxbqdjsp-nixos-test-driver-amcheck-upgrade.drv
  /nix/store/h8wwa1082zggz747jg25yz6ncwd0giql-vm-test-run-amcheck-upgrade.drv