these 16 derivations will be built:
  /nix/store/plxq9js33x8aa0l8vzw30x7hvxlcn6z2-unit-postgresql.service.drv
  /nix/store/j8cw8gc56aqjwmfnd3v1w208ycn10mrs-system-units.drv
  /nix/store/17v9xpw4n91r55f71chgglbsimqd19ml-etc.drv
  /nix/store/1f9105mnq7s2vqrkiwxmavgh1bb6clzf-unit-postgresql.service.drv
  /nix/store/nncg13xrcrkc6n57faqp9lq3am3dz5da-unit-postgresql.service.drv
  /nix/store/5hsjirscxsjfig3jkx5vyf5cx35gmb5g-system-units.drv
  /nix/store/5v1nswgf3dvchz77iyh1am7gmk5f1abv-etc.drv
  /nix/store/8j82j95sb8gd8vdc3h3mmnmmf27pdkdw-nixos-system-server-test.drv
  /nix/store/di5ldvc8m12x98ggvsgra3n6mvkq91lz-system-units.drv
  /nix/store/7qpbs55y0l39a5ar03rnfbfw7y5g8azy-etc.drv
  /nix/store/p1mv3az7nsl4yn7shirz685fg3jc2y6a-nixos-system-server-test.drv
  /nix/store/99bl8m6flmh7m0vjbgjfiazwydfj9cac-nixos-system-server-test.drv
  /nix/store/isbahmdcd4w0wappbr39myznjwly72wz-run-nixos-vm.drv
  /nix/store/5i4l4jknif4h82nz2bchmgqwrdybaliw-nixos-vm.drv
  /nix/store/4g1bmv38x30vx777hh00mhjd7rh2z2c3-nixos-test-driver-pgroonga.drv
  /nix/store/4a8mnngj5dbbnx7s486qlgpkkqp6sb9x-vm-test-run-pgroonga.drv
these 16 paths will be fetched (135.8 KiB download, 920.5 KiB unpacked):
  /nix/store/0kc6swsixr6miz13dq0fsf0ma138cgmv-activate
  /nix/store/6fl6xqxc8m9wgrr42k2gl1ckh6wrv870-activate
  /nix/store/pqhxmrf7a9kcc2fnpb8b05182jya3cp3-activate
  /nix/store/v6i47scw2rcgzhlb4ykrkh2ygq6gn1ym-closure-info
  /nix/store/bvvacv84d9p2cq692xrvwsy9722lzscc-etc
  /nix/store/d0cvka7sbdrijrgijhjpkmhi9wpwby4d-etc
  /nix/store/lnffd8n24nh878895nz6819i02l6sygz-etc
  /nix/store/20yyq145nzh7187cz7qsanfwq2g51brq-nixos-system-server-test
  /nix/store/3cg93nr5l97y0a19ga6falg7jllprh2z-nixos-system-server-test
  /nix/store/b5bss4ciyw3mmlnv3cw7bdv6yln45lf2-nixos-system-server-test
  /nix/store/3vhs6nbvidycnd33y1l4mczq143nqpk3-system-units
  /nix/store/h0i9vs5sgbss9gjjyqv3dfrljal1kc8k-system-units
  /nix/store/znfhq1qpsl2v9ijs4idc8p14iw7syvw8-system-units
  /nix/store/0lrk5jys8ail7rgzvxmmav841zmkai9s-unit-postgresql.service
  /nix/store/j8big4za0y4x960pb0nmzk7jcnsfzq2q-unit-postgresql.service
  /nix/store/j8v8ns6bhsimcbhgfnlcq1dyksmqz7nk-unit-postgresql.service