these 16 derivations will be built:
  /nix/store/bjbgqz6rqfrrkq53hjjak05jczb1y306-pg-minor-upgrade.drv
  /nix/store/1lzcf4k4rhc4f0365dk5pxs4k7gfyzs1-pg-minor-upgrade-.service.drv
  /nix/store/nj595zqxrvw8gsqlany8nix9msw1m9x6-pg-minor-upgrade.drv
  /nix/store/4fylmafr2sq2gdw02k49xg4fs1ikzkp5-user-generators.drv
  /nix/store/aczq79sn7xq27l0h8dc90zvha02awqb8-user-units.drv
  /nix/store/i2dzi0ncnhlilaylinlxycca8qm4cnmn-system-generators.drv
  /nix/store/sxlkav04krgircsg1ykxiirnhfg94cqg-system-units.drv
  /nix/store/z5qdyqhfilbzpn2nbglknjzj4vq29h4f-system-shutdown.drv
  /nix/store/b0si97clachizf2wcxaapb580cr6vz78-etc.drv
  /nix/store/cqbysa0dnwckj6fil7k78xw6ddq2iviy-activate.drv
  /nix/store/lhg8f6zf8bfqkngm6y44v8vlnbk89dyd-nixos-system-server-test.drv
  /nix/store/d223gi27syc7f2ibz973babmb1hapzd1-closure-info.drv
  /nix/store/540h2lfyp77n46mjdjdzbq0wxca8xiwz-run-nixos-vm.drv
  /nix/store/axfa7lbdvpvjkhdsy8cxj66hqbryx0mp-nixos-vm.drv
  /nix/store/z0cwi8qrc6cp8qbc20w8phlkxdl0dww0-nixos-test-driver-postgres-minor-upgrade.drv
  /nix/store/4hfih8s17d5lf91xqh1wxkh1xai427m5-vm-test-run-postgres-minor-upgrade.drv