these 12 derivations will be built:
  /nix/store/qcspwphdr7f3cxfnmpc8kc08hi387k81-postgresql-migrate.drv
  /nix/store/bm8m8cd9iz7wz9hgksbcgd9d0dhlx7n3-unit-postgresql-migrate.service.drv
  /nix/store/xs4l0vn4aihgzd5nl1b08b7a9wnl2d71-system-units.drv
  /nix/store/kb2ffz4fwwh13q58fwyf0869745vfv93-etc.drv
  /nix/store/ilaq2jsajy1lqs7x6h128hg5rigcs6dk-activate.drv
  /nix/store/sz3h5ia1k2qdzy6cwy185vjrwk30z41r-nixos-system-server-test.drv
  /nix/store/rd38ihfqm3mk6jim0r441n475mr49ixm-nixos-system-server-test.drv
  /nix/store/k422ac1yvij3v60wwc9jfzza02a1lnsw-closure-info.drv
  /nix/store/6mw6nbhr4dnxxdzbq1rkxcmz61gl521s-run-nixos-vm.drv
  /nix/store/r7ahri7c6jsdn2hqy9wqgq4gdw18nhwr-nixos-vm.drv
  /nix/store/n71fdzjij91jr3372fk0d332czl7gf4p-nixos-test-driver-pgjwt.drv
  /nix/store/07czvjip061ycj9aqq3d2chdvx8c9iva-vm-test-run-pgjwt.drv