these 19 derivations will be built:
  /nix/store/g3zbqmbr0w7rbrd7z2wwng05rwz0mwr4-unit-postgresql.service.drv
  /nix/store/0zq04xq8g3rbmivllksad548yd35zih0-system-units.drv
  /nix/store/k217d2i32ldbxm3h0dqfpmqfvx7wyr9n-etc.drv
  /nix/store/388swlfwvpb8q809fsmjflf6jdq9izv4-activate.drv
  /nix/store/ndkh9lrgla6ajphwbmhr5lpwb4mb7lla-unit-postgresql.service.drv
  /nix/store/sl17ghsp0xyk2h2crfyqxm9k4pyva5z5-system-units.drv
  /nix/store/j5zn9wwsd353r6a5yz1i3z20xw7xvi2i-etc.drv
  /nix/store/lhg1rlldrbikf2l0r9gajhzijcqzzw5z-activate.drv
  /nix/store/cndv2wy5gf73wii30mfwf98vqw8if65r-nixos-system-server-test.drv
  /nix/store/7dlr7vwlzqnx9w4qw1i7snry14kmhsz2-unit-postgresql.service.drv
  /nix/store/5z6sl3pc4gm8zpnk67wf0h3kvj6fd1kl-system-units.drv
  /nix/store/mn8gd5lzmnqyawwpnrsfhhwfdv0hbcwg-etc.drv
  /nix/store/zlsw6qnbcwap9r5cxl9gzqmniimgzh5q-nixos-system-server-test.drv
  /nix/store/ydpmji6s9d94yqg8bsnggdr8vd3a503i-nixos-system-server-test.drv
  /nix/store/10djj5y49drm4jb3g5mynlcqq5yzy5dr-closure-info.drv
  /nix/store/b1al39z33v5vxkim8ir4cz01hqvl4q77-run-nixos-vm.drv
  /nix/store/5m0lni0cv63wr7nkrkfs41088gdwiygf-nixos-vm.drv
  /nix/store/0r312g5chxvcq5dji34yk8mcw55nihqx-nixos-test-driver-pgroonga.drv
  /nix/store/vpqhnmz6h0anpzq55fl5gxlch8wpf9j4-vm-test-run-pgroonga.drv
these 4 paths will be fetched (13.9 KiB download, 135.5 KiB unpacked):
  /nix/store/2qv3900sq9gkb41rfmlcplq1czcfybcj-activate
  /nix/store/www8360w84prlk4izz1jqfa6qsxxhc7q-etc
  /nix/store/b69p5y61gkar0d4xlg88yg05xpkx9vh7-system-units
  /nix/store/kdkkdmfxq4bjpbmwqby4by6aahl0798s-unit-postgresql.service