these 22 derivations will be built:
  /nix/store/937ynpn2a30356klsd1h4k004arxlmib-unit-postgresql.service.drv
  /nix/store/p3qabga0fxwyg059xg8cqvkh87012v4b-system-units.drv
  /nix/store/4shyka0xn23rld57ggbbb2w1aj27gbkp-etc.drv
  /nix/store/n42mxdqzzcqfrxaddrr7jlcrzi9k4m4k-activate.drv
  /nix/store/bbg7bmzsbl7sd29pqmni16sliiq1vh8l-nixos-system-server-test.drv
  /nix/store/prd2jnyyrsxq4wvb4y2ds3dl674l4py7-unit-postgresql.service.drv
  /nix/store/fam0jaqm7ivd4b0ik9q9k5dw5zqb61bs-system-units.drv
  /nix/store/z2zkyl1xirpryd5dph2fphilqqwizs3l-etc.drv
  /nix/store/x4qy2lpk2bf3pvx0b3ay0zziwq87rv9g-activate.drv
  /nix/store/ihcn5p0fkkgvxhhihyk5xa5mgkx2kad9-nixos-system-server-test.drv
  /nix/store/ff58pa2qngpi8pyhqirjrx8ib4zx9474-unit-postgresql.service.drv
  /nix/store/7p7h6md5w75n0qmr75lascbimwzlmzl3-system-units.drv
  /nix/store/m7fyv06qk3z46r20mmb256i74v1xvbzr-etc.drv
  /nix/store/jspiyyq81k9fd21h0yhb44zwd32arwhp-activate.drv
  /nix/store/1455h8sh2hj7jdzm2j75z1ksxdmkvl4w-nixos-system-server-test.drv
  /nix/store/5b6j92m68cbbh9skxmiaz4lgsc6ylbf2-test-script.drv
  /nix/store/35dw5gmwdmjm3ii59vlyks6fjr1f1lg3-closure-info.drv
  /nix/store/nc3j1iwhyhvr5jsixjnc71i9i3vv5lz2-run-nixos-vm.drv
  /nix/store/zw9g03fb9gcgan0z3a9xhax76r25sh4w-nixos-vm.drv
  /nix/store/00f0xqajs0gf38128nrg1qymmgf9xm2l-driverConfiguration.json.drv
  /nix/store/k8iw4hccqia4wyyy2r10zssn9q0nxk7n-nixos-test-driver-pgroonga.drv
  /nix/store/3rgbc4yi0bk7hb1khyxscx7pr26v0j3w-vm-test-run-pgroonga.drv