these 18 derivations will be built:
  /nix/store/15ranx3mjn6rrd3dsnmsq51ispngffxv-unit-postgresql.service.drv
  /nix/store/59rbrmv3vsrlm7hiwc04v2v4v2i16gka-system-units.drv
  /nix/store/p0b5izv0zfv03vwrgl00l57liqjjqwil-etc.drv
  /nix/store/r4i2lv9dbf7m39ln7760xrb7v2p8rgqi-activate.drv
  /nix/store/7py0drky53km8889k8ppz5fchfw9pqn8-nixos-system-server-test.drv
  /nix/store/svb78m0ywk78vyr0va11g433nkv8qb14-unit-postgresql.service.drv
  /nix/store/m2sr27pksp3y8izcvhbzvinafw969zy7-system-units.drv
  /nix/store/bzqlra1nbv7b35lll7qd1xbqd1xq4655-etc.drv
  /nix/store/k2jjd6gy04g961psm4s5g1ybanrsw11n-nixos-system-server-test.drv
  /nix/store/jpzy7vx946ixj5ha3fdl4r09rnkp6y1g-unit-postgresql.service.drv
  /nix/store/jlqpa6lwxa0kss951akc10k5z7y6s0nl-system-units.drv
  /nix/store/si6lnlraimcw3v8ddr10ga5kl5hh2qmg-etc.drv
  /nix/store/6iv8avkhsyk2gipwhrplqq3pscrvp56d-nixos-system-server-test.drv
  /nix/store/5xpaa3mga3zhh19cxjg7iw78fiy6r7hi-closure-info.drv
  /nix/store/7apvwv7niak434vgy9b7l7z948j4ymjr-run-nixos-vm.drv
  /nix/store/3g94whn73hbk1f4x804rm01xh927ddgw-nixos-vm.drv
  /nix/store/s1abqmhmabphgfyhjikd0nln1d14kdhj-nixos-test-driver-pgroonga.drv
  /nix/store/qzy1362jfsjzyadk39jiq9zxk1ljxyb1-vm-test-run-pgroonga.drv
these 8 paths will be fetched (27.7 KiB download, 270.9 KiB unpacked):
  /nix/store/2i90005rbllpb9m89vrs52aigkj79w0j-activate
  /nix/store/mdcqr1fkkjh64zxki2j3362ms18rxr3w-activate
  /nix/store/03phwn92b5hn57q8pzlfm26gwlk65rpf-etc
  /nix/store/jcbyk44xs0fi8zhqp7r36fzavy4wy1m8-etc
  /nix/store/gbvr26ap56aypr1dywprpjixi1zar4c5-system-units
  /nix/store/l159mvf9bz2d08kmh95y2qmp84wfjlmh-system-units
  /nix/store/89vq5hmzh3a4144wzw5n5nilmia9dw97-unit-postgresql.service
  /nix/store/zh8xds2mpvb2960hj3i7lwj6ym69cpk3-unit-postgresql.service