these 12 derivations will be built:
  /nix/store/4z271n52hzh111snnw2780jylwzsxbap-init-old.drv
  /nix/store/r8jikkfwkxfwnb5qkc2lgwkszakbpz79-unit-postgresql.service.drv
  /nix/store/8lwx2m40a1pdbz90r2k41wqp2rz9sm00-system-units.drv
  /nix/store/dgksjmbnrn708bqlj793ls47fb0x9n8r-etc.drv
  /nix/store/nnr7ymrxmg5m780amn3m3rkxa10wmr7c-activate.drv
  /nix/store/wn9glai1714cmczkj80gmzh5gp3ra6gv-nixos-system-server-test.drv
  /nix/store/f78d2r0ags30pn05yph7dma6fwipfdl6-closure-info.drv
  /nix/store/bgnf2yhaihmjmwly7kwh4v1cdk82s36c-run-nixos-vm.drv
  /nix/store/m0qfh0kad30r09c4n16fl8lsjpmzy3xa-drive.drv
  /nix/store/pc1mjq10z05ydpzz0s99prvi2iavgi07-nixos-vm.drv
  /nix/store/lg0ap7dvf4cg8z8jdrgh32j6vl4j714z-nixos-test-driver-pg-upgrade-start-guard.drv
  /nix/store/jq0cplc7wz4rc0djr5ijcld32plc1w0a-vm-test-run-pg-upgrade-start-guard.drv