these 17 derivations will be built:
  /nix/store/7iplzbq4xpg1bsskj0d8f37h8ypb1hrc-unit-postgresql.service.drv
  /nix/store/4vms6qw7l2nmi6cngf5cy53lp653hah2-system-units.drv
  /nix/store/krisx2kfym2k96fzz632gazsfa57a50b-etc.drv
  /nix/store/f4xknx2b9jzi6h6yfrvw3gwx91isb4wn-nixos-system-server-test.drv
  /nix/store/lkhrz9y727x6iwxv396qg7mcicnkxp69-unit-postgresql.service.drv
  /nix/store/ad3zmc76k9s1pn5jszvm5adp34gnxd1j-system-units.drv
  /nix/store/p681aj336ah1p52n2ay73v6iw6xdy4hk-etc.drv
  /nix/store/4vxwfkgivmslx1b9nk0fn1z9p48xpprl-unit-postgresql.service.drv
  /nix/store/d36bc03cg4rw6nhwz48vrrx4g4qb4kdz-system-units.drv
  /nix/store/rgiy9ji026c72xvch3d3hycj43flm3wv-etc.drv
  /nix/store/qw105gczp6z0k6gsw4dday681f0gx7mp-nixos-system-server-test.drv
  /nix/store/lcbp3469xf8f8qi7fb2x2g8bv9iqrdxf-nixos-system-server-test.drv
  /nix/store/nizg6456isl8fps36gm7f9d6ivv4fllf-closure-info.drv
  /nix/store/2db6z01r03s1gyz5grkjjwc8hdb0an52-run-nixos-vm.drv
  /nix/store/rnnpfdplyk8big3yg3zvbx27mvzcwrxi-nixos-vm.drv
  /nix/store/9b44npgg1zfdw5dp8csglrq1rl6vd1cg-nixos-test-driver-pgroonga.drv
  /nix/store/0r9c1dhgj2zbxk7f1mczm6glwk43i3rx-vm-test-run-pgroonga.drv
these 12 paths will be fetched (41.6 KiB download, 406.7 KiB unpacked):
  /nix/store/7wqhgf6hgjf6zylfh7jss3ak7nrd1yxa-activate
  /nix/store/83b9zpbbqp6n3nv1f66bgy1bia9kw3hr-activate
  /nix/store/crsjkypwfz2d3b4gxfjk42411r01w28m-activate
  /nix/store/snvjhw72k71iysx7kg4q55ra6b3azm7z-etc
  /nix/store/snw85pq7fbs3j0hj1b2qivcxdzab5br9-etc
  /nix/store/vb3p1p8xrv0qs74grsw9q1803pdy44h2-etc
  /nix/store/34ryhyzn00wl9phh39rahy73wi1spm10-system-units
  /nix/store/x6aax3044gzf4jsi6alii8mkf6y4v0z0-system-units
  /nix/store/ypk7032wsvaabxd0cy4964fnxps7dnfm-system-units
  /nix/store/lvprcsm88irqpjrjm4p4j0kxys3xca56-unit-postgresql.service
  /nix/store/r2z81bxmkb5m7fv86cpw3dkkq0ff91b1-unit-postgresql.service
  /nix/store/xykwhqbrhwamr4j005nrhpyb09684a6l-unit-postgresql.service