these 20 derivations will be built:
  /nix/store/m8gqp8rapmhqngw9bmpp0bl84micldd4-unit-postgresql.service.drv
  /nix/store/zl06dpn4kbvq6snnl6186w1np9l04wb6-system-units.drv
  /nix/store/kdzm093xbfqzhmzw2cp627s91alzjbsj-etc.drv
  /nix/store/g4zs2l8s0jssvlpjbym0hz52515vmbl3-activate.drv
  /nix/store/askqwmx543lysnk2wjqcnwn2p4qdr2w5-unit-postgresql.service.drv
  /nix/store/gs7l2bydbiiln514c45adlsbp8xiq9rw-system-units.drv
  /nix/store/pzdhd3wmpq2afbnwxm8fvq57bh5r1hv2-etc.drv
  /nix/store/jfihsmzw1a59skh7bnsqy74248dvm6wd-activate.drv
  /nix/store/nmf52hvl8d7sl3wx7f611k9cdi3krq0c-nixos-system-server-test.drv
  /nix/store/dmmfn20d2dk9a5vjvs4v6azlqvnds4cr-unit-postgresql.service.drv
  /nix/store/cpq0z0dgzyzp7sjjzwjpmfyj2wax4ynv-system-units.drv
  /nix/store/73w8w2pklabqf3h1va7kqyw2022y2jvd-etc.drv
  /nix/store/b0yyvjkvfbhbvpn2i49mhah86qcf1jjr-activate.drv
  /nix/store/vfqifwg6dswn6apkxas90zkyx5k2g4i4-nixos-system-server-test.drv
  /nix/store/ng3sr7zrjircflq7byimac4fr53mn8bq-nixos-system-server-test.drv
  /nix/store/fg8i0d7d6zqw0ar99f52fj76jmkh3cqc-closure-info.drv
  /nix/store/j1py9hvndkx2m47zp8vjgld69gxd6mby-run-nixos-vm.drv
  /nix/store/vpnf3yynn8szxap8jw1hww39ph6g61dn-nixos-vm.drv
  /nix/store/jp1xl4cvpp37g27d4s0axwpmcj7s5wkb-nixos-test-driver-http.drv
  /nix/store/3zgxcxispl0w2nhk8mndykxff27ffdcy-vm-test-run-http.drv